WIRE NETTING SYSTEM

Abstract

A wire netting device, in particular safety net device, includes at least two mutually engaging net elements, at least one net element of which is produced from at least one single wire, a wire bundle, a wire strand, a wire rope and/or another longitudinal element with at least one wire that is made at least partially of a high-tensile steel, the wire comprises at least one corrosion protection, in particular a corrosion protection layer and a portion of the wire (12a-g), in particular at least a portion of a wire mesh implemented of the wire, with the corrosion protection, in particular the corrosion protection layer, in a test run by an alternating climate test has a corrosion resistance of more than 1,680 hours, preferably more than 2,016 hours, advantageously more than 2,520 hours, preferentially more than 3,024 hours and particularly preferably more than 3,528 hours.

Claims

1. A wire netting device with at least two mutually engaging net elements, at least one net element of which is produced from at least one single wire, a wire bundle, a wire strand, a wire rope and/or another longitudinal element each of which having at least one wire that is made at least partially of a high-tensile steel, wherein the wire comprises at least one corrosion protection, in particular a corrosion protection layer, wherein at least a portion of the wire, in particular at least a portion of a wire mesh implemented of the wire, with the corrosion protection, in particular the corrosion protection layer, in a test run by an alternating climate test has a corrosion resistance of more than 1,680 hours, preferably more than 2,016 hours, advantageously more than 2,520 hours, preferentially more than 3,024 hours and particularly preferably more than 3,528 hours.

2. The wire netting device according to claim 1, wherein at least a portion of the wire, in particular at least a portion of a wire mesh implemented of the wire, with the corrosion protection, in particular the corrosion protection layer, in a test run by an alternating climate test has a corrosion resistance that is higher than a corrosion resistance of a further wire, having a same circumference, in particular a same cross section and/or preferably a same diameter, as the wire, and having a zinc coating, said zinc coating having a mass per unit area that is at least 115 g/m.sup.2 and preferably maximally 215 g/m.sup.2.

3. A wire netting device with at least two mutually engaging net elements, at least one net element of which is produced from at least one single wire, a wire bundle, a wire strand, a wire rope and/or another longitudinal element each of which having at least one wire that is made at least partially of a high-tensile steel, wherein the wire comprises at least one corrosion protection, in particular a corrosion protection layer, wherein at least a portion of the wire, in particular at least a portion of a wire mesh implemented of the wire, in an exposition test, in particular in a highly corrosive environment, shows within a defined time interval a corrosion that is substantially smaller, in particular a lower number and/or a smaller total area of corroded places on a wire surface of the at least a portion, than a portion, in particular a portion that has undergone the same exposition test at the same time and preferably has an at least substantially identical shape, of a further wire having a same length, a same circumference, in particular a same cross section and/or preferably a same diameter, and having a zinc coating, said zinc coating having a mass per unit area of at least 115 g/m.sup.2 and preferably maximally 215 g/m.sup.2.

4. The wire netting device according to claim 1, wherein the corrosion protection comprises at least one corrosion protection layer, with a mass per unit area of the corrosion protection layer of at least 215 g/m.sup.2.

5. The wire netting device according to claim 1, wherein the corrosion protection comprises at least one corrosion protection layer that is embodied as a zinc-aluminum coating, in particular with an aluminum fraction of approximately 5%.

6. The wire netting device according to claim 5, wherein the zinc-aluminum coating comprises at least one additive, different than aluminum and/or zinc, preferably magnesium, which in particular comprises at least 0.5% of the corrosion protection layer.

7. The wire netting device according to claim 1, wherein the corrosion protection is implemented at least partly integrally with the wire.

8. The wire netting device according to claim 1, wherein the corrosion protection, in particular the corrosion protection layer, comprises at least one coating which is to a large extent embodied of an at least partially organic and/or at least partially inorganic carbon compound, preferably graphene.

9. The wire netting device according to claim 1, wherein at least a portion of the wire comprises a corrosion protection, in particular a corrosion protection layer, which in at least one test run survives without damages, in particular without breaking, an at least M-fold back-and-forth bending of the wire around at least one bending cylinder that has a diameter of maximally 8d, by at least 90 respectively, in opposite directions, wherein M can be determined, if applicable by rounding-down, to be C*R.sup.0.5*d.sup.0.5, and wherein d is a diameter of the wire in mm, R is a tensile strength of the wire given in N mm.sup.2 and C is a factor of at least 750 N.sup.0.5 mm.sup.0.5.

10. The wire netting device according to claim 1, wherein at least a portion of the wire comprises a corrosion protection, in particular a corrosion protection layer, which in at least one test run, in particular further test run, survives without damages, in particular without breaking, an N-fold twisting of the wire, wherein N can be determined, if applicable by rounding-down, to be B*R.sup.0.5*d.sup.0.5, and wherein d is a diameter of the wire in mm, R is a tensile strength of the wire in given in N mm.sup.2 and B is a factor of at least 960 N.sup.0.5 mm.sup.0.5.

11. The wire netting device according to claim 1, wherein at least a portion of the wire comprises a corrosion protection, in particular a corrosion protection layer, which in at least one test run, in particular additional further test run, survives without damages, in particular without breaking, a winding of the wire around a winding mandrel, whose diameter at least substantially corresponds to a diameter of the wire.

12. A wire net, preferably for a securing against rockfall, with a wire netting device according to claim 1, with a plurality, in particular a plurality exceeding two, of mutually engaging net elements, which are at least partly implemented in a helical shape.

13. A wire net, preferably for a securing against rockfall, with a wire netting device according to claim 1, with a plurality, in particular a plurality exceeding two, of mutually engaging net elements, which are embodied to be at least partly closed in themselves, preferably closed in themselves in a ring shape.

14. A method for a production of a wire net, in which the wire net is produced from wire netting devices with at least two mutually engaging net elements, wherein the net elements are produced from at least one single wire, a wire bundle, a wire strand, a wire rope and/or another longitudinal element each of which having at least one wire that is made at least partially of a high-tensile steel with a tensile strength of at least 800 N mm.sup.2, wherein the wire comprises at least one corrosion protection, wherein the net element presents a shape of a flat-pressed helix with a sequence of alternating legs and bending regions, the bending regions connecting respectively two legs and the legs including a bending angle in the bending region, wherein in at least one method step the wire implemented of the high-tensile steel is bent into the helices, and wherein in at least one method step the wire net is braided from the helices, wherein a suitability of a wire for a manufacturing of the wire net is determined previously to a production of the completed wire net by a determination, in at least one method step, of a suitable wire for the wire net with a high corrosion resistance by means of an alternating climate test on a portion of a wire mesh that is implemented of the wire with the corrosion protection, said determination being implemented in such a way that the portion of the wire mesh presents in the alternating climate test a corrosion resistance of more than 1,680 hours, preferably more than 2,016 hours, advantageously more than 2,520 hours, preferentially more than 3,024 hours and particularly preferably more than 3,528 hours, wherein the alternating climate test is a corrosion resistance test of the corrosion protection following the specifications given by VDA (German Association of the Automotive Industry) in their Recommendation VDA 233-102, and wherein a wire that has shown sufficient corrosion resistance in this alternating climate test is chosen for the manufacturing process.

15. (canceled)

16. A method for a production of a wire netting device according to claim 1, wherein, to form a net element, the wire is bent with a bending radius that is in each work step greater than 5 mm and wherein, to form the net element, the wire is bent with a bending speed that is less than 360 degrees/sec, and/or that during a coating of the wire, a coating temperature remains in each work step below 440 C.

17-18. (canceled)

19. The method according to claim 16, wherein heat acting onto the wire during a coating of the wire is used for augmenting a strength, in particular a tensile strength, of the wire.

20. A test device for testing a corrosion resistance of at least one test piece of a wire of a wire netting device according to claim 3 by an exposition test, the test device comprising at least one holding unit for holding at least one test piece of the wire and/or of at least one reference wire, wherein test pieces positioned in the holding unit are alignable parallel to one another, and/or are arranged in such a way that the test pieces realize at least substantially identical impact surfaces for at least one corrosive environment condition.

21. (canceled)

22. A wire mesh with a plurality of mutually engaging net elements, which are produced from at least one single wire, a wire bundle, a wire strand, a wire rope and/or another longitudinal element each of which having least one wire that is made at least partially of a high-tensile steel having a tensile strength of at least 800 N mm.sup.2, wherein the wire comprises at least one corrosion protection, wherein the net element presents a shape of a flat-pressed helix with a sequence of alternating legs and bending regions, the bending regions connecting respectively two legs, and the legs including a bending angle in the bending region, wherein at least a portion of a wire mesh implemented of the wire with the corrosion protection, in an alternating climate test has a corrosion resistance of more than 1,680 hours, preferably more than 2,016 hours, advantageously more than 2,520 hours, preferentially more than 3,024 hours and particularly preferably more than 3,528 hours, wherein the alternating climate test is a corrosion resistance test of the corrosion protection following the specifications given by VDA (German Association of the Automotive Industry) in their Recommendation VDA 233-102, obtained by the method for a production of a wire net according to claim 16.

Description

DRAWINGS

[0043] Further advantages will become apparent from the following description of the drawings. The drawings show seven exemplary embodiments of the invention. The drawings, the description and the claims contain a plurality of features in combination. Someone skilled in the art will purposefully also consider the features individually and will find further expedient combinations.

[0044] It is shown in:

[0045] FIG. 1 a schematic view of a portion of a wire net with a wire netting device,

[0046] FIG. 2 a sectional view of a wire of the wire netting device with a corrosion protection, and a sectional view of a further wire with a corrosion protection,

[0047] FIG. 3 a schematic view of a bending unit,

[0048] FIG. 4 a schematic view of a twisting unit,

[0049] FIG. 5 a schematic view of a winding unit,

[0050] FIG. 6 a schematic perspective view of a test chamber with a test device,

[0051] FIG. 7 a schematic perspective view of a holding unit of the test device,

[0052] FIG. 8 a temporal flow chart of an alternating climate test in the test chamber,

[0053] FIG. 9 a temperature curve and a relative-humidity curve during a sub-cycle of the alternating climate test,

[0054] FIG. 10 a temperature curve and a relative-humidity curve during a further sub-cycle of the alternating climate test,

[0055] FIG. 11 a temperature curve and a relative-humidity curve during an additional further sub-cycle of the alternating climate test,

[0056] FIG. 12 a flow chart of a method,

[0057] FIG. 13 a temperature-time diagram,

[0058] FIG. 14 a concentration-time diagram,

[0059] FIG. 15 a concentration-time diagram,

[0060] FIG. 16 a sectional view of a wire with an alternative corrosion protection,

[0061] FIG. 17 a sectional view of a wire with a further alternative corrosion protection,

[0062] FIG. 18 a sectional view of a wire with a second further alternative corrosion protection,

[0063] FIG. 19 a sectional view of a wire with a third further alternative corrosion protection,

[0064] FIG. 20 a sectional view of a wire with a fourth further alternative corrosion protection, and

[0065] FIG. 21 a schematic view of a portion of a further wire net with the wire netting device.

DESCRIPTION OF THE ALTERNATIVE EMBODIMENTS

[0066] FIG. 1 shows a schematic view of a portion of a wire net 44a with a wire netting device. The wire net 44a is embodied as a safety net for a safeguarding from rockfall. The wire netting device is embodied as a safety net device. The wire netting device comprises a plurality of net elements 10a. The wire net 44a comprises a plurality of more than two mutually engaging net elements 10a. The net elements 10a respectively engage one into the other one. The net elements 10a are braided with one another. The net elements 10a form a wire mesh 18a. The net elements 10a are implemented to be helix-shaped. The net elements 10a are embodied as helices 58a. The net element 10a has a main extension direction 60a. By a main extension direction of an object is herein in particular a direction to be understood which extends parallel to a longest edge of a smallest geometrical rectangular cuboid just still enclosing the object completely. The main extension directions 60a of the net elements 10a are aligned in parallel to one another. The net element 10a has a shape of a flat-pressed helix. The net element 10a comprises a sequence of alternating legs 62a, 64a. The net element 10a comprises bending regions 66a. A bending region 66a connects two legs 62a, 64a. Mutually engaging net elements 10a are in contact with one another in a spread state in a proximity 68a of the bending regions 66a, preferably in the bending regions 66a. The legs 62a, 64a span a bending angle 70a. The legs 62a, 64a have a bending radius 46a. The bending radius 46a of different bending regions 66a of a net element 10a and/or of different net elements 10a is constant. The net element 10a comprises a single wire that is implemented of a wire 12a. Alternatively the net element 10a may comprise a wire bundle with the wire 12a, a wire strand with the wire 12a, a wire rope with the wire 12a and/or another longitudinal element with the wire 12a.

[0067] FIG. 2 shows a cross section 22a of the wire 12a that is implemented perpendicularly to an extension direction 72a of the wire 12a. The wire 12a has a circumference 20a, The wire 12a has a diameter 24a. In the exemplary embodiment shown in FIG. 2, the diameter 24a of the wire 12a is 4 mm. The wire 12a has a wire surface 26a. The wire 12a comprises a wire core 76a. The wire 12a comprises a corrosion protection 14a. The wire 12a comprises a coating 30a. The corrosion protection 14a is embodied as a coating 30a. The coating 30a is implemented as a corrosion protection layer 16a. Apart from the coating 30a, the wire 12a is implemented of a high-tensile steel 74a. The wire core 76a is implemented of a high-tensile steel 74a. In the exemplary embodiment shown in FIG. 2, the corrosion protection layer 16a has a mass per unit area of at least 300 g/m.sup.2. The corrosion protection layer 16a completely encompasses the wire core 76a in a circumferential direction. The corrosion protection layer 16a has a constant layer thickness 84a. The corrosion protection layer 16a is realized as a zinc coating 80a. The corrosion protection layer 16a is connected with the wire core 76a via substance-to-substance bond. By connected via substance-to-substance bond is in particular to be understood that the mass particles are held together by atomic or molecular forces like, for example, with soldering, welding, gluing, zincking, galvanizing and/or vulcanizing.

[0068] FIG. 3 shows a schematic representation of a bending unit 86a for carrying out a reverse bend test of a wire 12a. The bending unit 86a comprises clamping jaws 88a, 90a, which are configured for a clamping-in of a test piece 92a of a wire 12a.

[0069] The test piece 92a is preferably a portion of the wire 12a and/or of the wire mesh 18a of the wire netting device. In the case shown it is a test piece 92a of the wire 12a. The bending unit 86a comprises a bending lever 94a, which is supported in such a way that it is pivotable back and forth. The bending lever 94a comprises drivers 96a, 98a for the test piece 92a of the wire 12a. The bending unit 86a comprises a bending cylinder 32a which the test piece 92a of the wire 12a is bent around in the reverse bend test. The bending unit 86a comprises a further bending cylinder 100a, which is implemented identically to the bending cylinder 32a. The further bending cylinder 100a is arranged opposite the bending cylinder 32a. In the reverse bend test the bending lever 94a bends the test piece 92a of the wire 12a by at least 90 alternatingly around the bending cylinder 32a and the further bending cylinder 100a. To test a load capacity and/or a flexibility of the coating 30a, in particular of the corrosion protection layer 16a, the reverse bend test is usually executed until the coating 30a, in particular the corrosion protection layer 16a, of the test piece 92a of the wire 12a is damaged, in particular breaks, bursts, tears and/or comes off. The coating 30a, in particular the corrosion protection layer 16a, of the wire 12a survives without damages at least M-fold back-and-forth bending of the wire 12a by at least 90 in opposite directions 36a, 38a around the bending cylinders 32a, 100a. The bending cylinders 32a, 100a have a diameter 34a of maximally 8d, wherein d is the diameter 24a of the wire 12a given in millimeters. The value M can be determined, if applicable with rounding-down, to be C*R.sup.0.5*d.sup.0.5. R constitutes a tensile strength of the wire 12a given in N*mm.sup.2. In the exemplary embodiment shown the tensile strength of the wire 12a is 1570 N*mm.sup.2. C constitutes a constant factor. In the exemplary embodiment shown C is 750 N.sup.0.5*mm.sup.0.5.

[0070] FIG. 4 shows a schematic representation of a twisting unit 102a for carrying out a twisting test of a wire 12a, The twisting unit 102a comprises a basic unit 112a, The twisting unit 102a comprises a twisting lever 104a, which is supported in such a way that it is rotatable around an axis 106a. The twisting unit 102a is convertible into the bending unit 86a and vice versa. When converting the bending unit 86a and/or the twisting unit 102a, the bending lever 94a and the twisting lever 104a are exchanged. The twisting unit 102a comprises clamping jaws 88a, 90a, which are configured for a clamping-in of a test piece 92a of a wire 12a in the basic unit 112a. The test piece 92a is preferably embodied as a portion of the wire 12a and/or of the wire mesh 18a of the wire netting device. In the case shown it is a test piece 92a of the wire 12a. The twisting lever 104a comprises clamping jaws 108a, 110a, which are configured for a clamping-in of a test piece 92a of a wire 12a in the twisting lever 104a. The twisting lever 104a is configured to twist the test piece 92a by means of a rotation of the twisting lever 104a around the axis 106a. In a rotation of the twisting lever 104a the basic unit 112a remains rotation-free. In the twisting test the twisting lever 104a twists the test piece 92a of the wire 12a by a multiple of 360 around an axis 106a that is parallel to a longitudinal extension of the test piece 92a. To test a load capacity and/or a flexibility of the coating 30a, the twisting test is usually executed until the coating 30a, in particular the corrosion protection layer 16a, of the test piece 92a of the wire 12a is damaged, in particular breaks, bursts, tears and/or comes off. The coating 30a, in particular the corrosion protection layer 16a, of the wire 12a survives without damages at least N-fold twisting of the wire 12a. The value N can be determined, if applicable with rounding-down, to be B*R.sup.0.5*d.sup.0.5. B constitutes a constant factor. In the exemplary embodiment shown, B is 960 N.sup.0.5*mm.sup.0.5.

[0071] FIG. 5 shows a schematic representation of a winding unit 114a for carrying out a winding test of a wire 12a. The winding unit 114a comprises a winding mandrel 40a. The winding mandrel 40a is configured to provide a winding surface 116a for a winding-up of a wire 12a. The winding mandrel 40a has a diameter 42a. The diameter 42a is an outer diameter 118a of the winding mandrel 40a and at least substantially corresponds to a diameter 24a of the wire 12a, It is conceivable that the winding mandrel 40a is implemented of a portion of the wire 12a, in particular a portion of the wire 12a that is not bent. In a winding test the wire 12a is wound at least once, preferably spiral-like, around the winding mandrel 40a by 360 degrees. The corrosion protection 14a, in particular the corrosion protection layer 16a, survives a winding of the wire 12a around the winding mandrel 40a without damages.

[0072] FIG. 6 shows a test device for a testing of a corrosion resistance of at least one test piece 92a of the wire 12a and/or of a test piece 92a of the wire net 44a. The test device comprises a test chamber 120a. The test chamber 120a is embodied as a box which is closed off on all sides. The test chamber 120a comprises an opening 124a that can be closed by a flap 122a. The opening 124a is configured for moving test pieces 92a into the test chamber 120a and/or out of the test chamber 120a. The test chamber 120a is configured to realize a test environment for an alternating climate test, for a salt spray fog test and/or for a sulfur dioxide test and/or to carry out an alternating climate test, a salt spray fog test and/or a sulfur dioxide test. The test device comprises a control and/or regulation unit 134a. By a control and/or regulation unit is in particular a unit with at least one controlling electronics component to be understood. By a controlling electronics component is in particular a unit to be understood that comprises a processor unit 136a and a memory unit 138a as well as an operation program stored in the memory unit 138a. The control and/or regulation unit 134a is at least configured for a controlling of the alternating climate test, the salt spray fog test and/or the sulfur dioxide test. The test device comprises a distributer unit 126a. The distributer unit 126a is arranged in an interior 130a of the test chamber 120a. The distributer unit 126a is configured to produce and/or distribute a salt spray fog in the test chamber 120a. Alternatively the distributer unit 126a is configured to generate a sulfur dioxide concentration for a sulfur dioxide test in the test chamber 120a and/or to distribute sulfur dioxide in the test chamber 120a. Alternatively or additionally the distributer unit 126a is configured to regulate, in particular to increase, to reduce and/or to keep constant a relative humidity in the interior 130a of the test chamber 120a. The distributer unit 126a comprises an infeed and/or outfeed conduit 132a. By way of the infeed and/or outfeed conduit 132a, a salt solution for a generation of the salt spray fog and/or a sulfur dioxide solution and/or a sulfur dioxide gas can be conveyed to the distributer unit 126a and/or to the test chamber 120a and/or away from the distributer unit 126a and/or the test chamber 120a. The distributer unit 126a is controllable and/or regulatable by means of the control and/or regulation unit 134a. The test device comprises a heating and/or cooling unit 128a. The heating and/or cooling unit 128a is configured for a tempering of the interior 130a of the test chamber 120a. The heating and/or cooling unit 128a is configured for a controlled heating and/or cooling of the interior 130a of the test chamber 120a, The heating and/or cooling unit 128a is arranged at least partially in the interior 130a of the test chamber 120a. The heating and/or cooling unit 128a is arranged at least partially inside a wall 140a of the test chamber 120a. The heating and/or cooling unit 128a is controllable and/or regulatable by means of the control and/or regulation unit 134a,

[0073] The test device comprises a holding unit 54a (cf, FIG. 7). The holding unit 54a is configured for a holding of at least one test piece 92a of the wire 12a and/or of the wire mesh 18a that is implemented of the wire 12a. The holding unit 54a is configured for a holding of a reference wire 56a and/or of a reference wire mesh. Test pieces 92a which are positioned in the holding unit 54a are alignable parallel to one another. Test pieces 92a which are positioned in the holding unit 54a are arranged in such a way that the test pieces 92a provide at least substantially identical impact surfaces for corrosive environment conditions in the test chamber 120a. The holding unit 54a is implemented of a corrosion-resistant material, for example a synthetic material. The holding unit 54a comprises receptacles 150a for receiving test pieces 92a and/or reference wires 56a. The test pieces 92a and/or reference wires 56a are clickable into the receptacles 150a. The test device comprises a mounting unit 142a. The mounting unit 142a is configured for a positioning of the holding unit 54a in the test chamber 120a, in particular in accordance with the requirements of the standard DIN EN ISO 9227:2006. The mounting unit 142a retains the holding unit 54a at an angle 144a of 20 relative to the vertical. The test device comprises a corrosion measuring unit 146a. The corrosion measuring unit 146a is configured to measure a progress and/or status of corrosion. The corrosion measuring unit 146a determines the status and/or progress of corrosion by an optical method, in particular by means of a camera 148a of the corrosion measuring unit 146a.

[0074] The wire 12a, in particular the wire mesh 18a implemented of the wire 12a, with the corrosion protection 14a, in particular the corrosion protection layer 16a, presents in a test run by an alternating climate test a corrosion resistance of more than 1,680 hours. The wire 12a, in particular the wire mesh 18a implemented of the wire 12a, with the corrosion protection 14a, in particular the corrosion protection layer 16a, further presents, in the test run by the alternating climate test, a corrosion resistance that is greater than a corrosion resistance of a further wire 78a.

[0075] The further wire 78a is implemented as a reference wire 56a. The further wire 78a has a circumference 20a that is at least substantially identical to the circumference 20a of the wire 12a. The further wire 78a has a cross section 22a that is at least substantially identical to the cross section 22a of the wire 12a. The further wire 78a has a diameter 24a that is at least substantially identical to the diameter 24a of the wire 12a. The further wire 78a comprises a wire surface 82a. The further wire 78a comprises a zinc coating 80a. The zinc coating 80a has a mass per unit area of at least 115 g/m.sup.2. The zinc coating 80a has a mass per unit area of maximally 215 g/m.sup.2. The further wire 78a meets at least the requirements for a class B wire according to the standard DIN EN 10264-2:2012-03. A wire mesh formed at least substantially identical to the wire mesh 18a can be produced from the further wire 78a.

[0076] FIG. 8 shows a temporal flow chart of the alternating climate test. The alternating climate test comprises a test cycle 256a. The test cycle 256a is divided into test sub-cycles. The sub-cycles comprise a cycle A 238a, a cycle B 240a and a cycle C 242a. The time sequence of the sub-cycles in the test cycle 256a is illustrated in FIG. 8 by a time axis 254a. The duration of one sub-cycle is one day. The duration of the test cycle 256a is one week.

[0077] FIGS. 9, 10 and 11 show temperature curves 246a of the test chamber temperature 48a as well as relative humidity curves 244a of the relative air humidity of the test chamber 120a during the cycle A 238a (FIG. 10), cycle B 240a (FIG. 11) and cycle C 242a (FIG. 9). The test chamber temperature 48a is plotted on ordinates 196a on the lefthand sides of the diagrams. The relative air humidity is plotted on further ordinates 248a on the righthand sides of the diagrams. Abscissae 198a show a time given in hours.

[0078] The cycle A 238a (cf. FIG. 10) starts with a three-hour salt spray phase 250a. During the salt spray phase 250a the test chamber 120a is filled with a salt spray fog by means of the distributer unit 126a. During the salt spray phase 250a the test chamber temperature 48a is 35 C. Following the salt spray phase 250a the test chamber temperature 48a is raised from 35 C. to 50 C. within two hours and is maintained at this value for further 15 hours. Then the test chamber temperature 48a sinks to 35 C. within four hours. After the salt spray phase 250a, the relative air humidity is reduced from 100% to 50% within six hours and then increases step-wise to 95% within eight hours. The relative air humidity keeps the value of 95% until the cycle A 238a ends after further five hours.

[0079] The cycle B 240a (cf. FIG. 11) starts with a three-hour decrease of the test chamber temperature 48a from 35 C. to 25 C. and is maintained at this value for further three hours. Then the test chamber temperature 48a increases to 50 C. within five hours. After further nine hours at this value, the test chamber temperature 48a sinks to 35 C. within four hours, until the end of cycle B 240a. The relative air humidity decreases at the beginning from 95% to 70% within three hours and keeps this value for ten hours. After that, the relative air humidity increases step-wise to 95% during six hours. The relative air humidity stays at the value of 95% until the cycle B 240a ends after further five hours.

[0080] The cycle C 242a (cf. FIG. 9) starts with a four-hour decrease of the test chamber temperature 48a from 35 C. to 15 C. and is held at this value for further five hours. During these five hours the test chamber temperature 48a is below freezing point.

[0081] The test chamber 120a is in a freezing phase 252a. Following the freezing phase 252a, the test chamber temperature 48a is raised to 50 C. within five hours. After further six hours at this value, the test chamber temperature 48a decreases to 35 C. within four hours, until the end of the cycle 242a, The relative air humidity decreases at the beginning, starting from 95%. In the freezing phase 252a the relative air humidity is very low. When the freezing phase 252a has ended and the test chamber temperature 48a has risen above freezing point, the relative air humidity stays at 70% for three hours. Then the relative air humidity increases step-wise to 95% during five hours. The relative air humidity stays at the value of 95% for further five hours, until the cycle 242a ends.

[0082] The wire 12a, in particular the wire mesh 18a implemented of the wire 12a, with the corrosion protection 14a, in particular the corrosion protection layer 16a, in a test run by a salt spray fog test has a corrosion resistance of more than 500 hours. Moreover, the wire 12a, in particular the wire mesh 18a that is implemented of the wire 12a, with the corrosion protection 14a, in particular the corrosion protection layer 16a, in the test run by the salt spray fog test has a corrosion resistance that is higher than a corrosion resistance of a further wire 78a.

[0083] Furthermore, the wire 12a with the corrosion protection 14a, in particular the wire mesh 18a implemented of the wire 12a, with the corrosion protection 14a, in particular the corrosion protection layer 16a, in an additional test run by a sulfur dioxide test has a corrosion resistance of more than 500 hours. The wire 12a, in particular a wire mesh 18a that is implemented of the wire 12a, with the corrosion protection 14a, in particular the corrosion protection layer 16a, in the additional test run by the sulfur dioxide test has a corrosion resistance that is higher than a corrosion resistance of the further wire 78a.

[0084] The wire 12a, in particular the wire mesh 18a implemented of the wire 12a, with the corrosion protection 14a, in particular the corrosion protection layer 16a, presents in an exposition test, within a defined time interval, substantially less corrosion than the further wire 78a subjected to the same exposition test at the same time. It is possible to estimate the corrosion, in particular the corrosion intensity, of a wire 12a, 78a on the basis of a number and/or a total area of corroded places on a wire surface 26a, 82a of a wire 12a, 78a. In the exposition test, test pieces 92a of wires 12a and/or of wire meshes 18a are positioned, in particular exposed, in at least one mounting position, preferably at least two mounting positions differing from one another, in particular a vertical mounting position and/or a horizontal mounting position and/or an inclined mounting position.

[0085] FIG. 12 shows a flow chart for methods for a production of a wire netting device and/or of a wire net 44a, for an identification of a suitable wire 12a and/or for a test method for testing a corrosion resistance. In at least one method step 152a the wire is produced from the high-tensile steel 74a. In at least one method step 154a the wire 12a is coated with the coating 30a. In at least one method step 156a the wire 12a is coated, in the coating process, at a coating temperature which remains below 430 C. in every work step. In at least one method step 158a a heat acting onto the wire 12a during the coating of the wire 12a is used to generate an increase of the tensile strength of the wire 12a.

[0086] In at least one method step 160a a wire 12a having a corrosion protection 14a and/or a corrosion protection layer 16a is selected for a testing of its corrosion resistance. In at least one method step 176a a selection of the wire 12a for a testing of its corrosion resistance is made dependent on a test of the corrosion protection layer 16a by way of a winding test. Wires 12a with corrosion protection layers 16a which fail the winding test are discarded. In at least one method step 180a a selection of the wire 12a for a testing of its corrosion resistance is made dependent on a test of the corrosion protection layer 16a by way of a twisting test. Wires 12a with corrosion protection layers 16a which fail the twisting test are discarded. In at least one method step 182a a selection of the wire 12a for the testing of its corrosion resistance is made dependent on a test of the corrosion protection layer 16a by way of a reverse bend test. Wires 12a with corrosion protection layers 16a that fail in the reverse bend test are discarded.

[0087] In at least one method step 178a a suitable wire 12a is identified for the wire netting device and/or for the wire net 44a having a high corrosion resistance. Herein the corrosion resistance of a test piece 92a of the wire 12a and/or of the wire mesh 18a is determined in at least one method step 236a by means of the alternating climate test, in at least one method step 164a by means of the salt spray fog test, in at least one method step 162a by means of the sulfur dioxide test and/or in at least one method step 166a by means of the exposition test.

[0088] In at least one method step 172a a test chamber temperature 48a is varied during the salt spray fog test (cf. FIG. 13). In the temperature-time diagram 194a given in FIG. 13 two temperature profiles 200a, 202a are shown. The temperature is here plotted on the ordinate 196a and the time is plotted on the abscissa 198a. A temperature profile 200a shows a sine-shaped course. A further temperature profile 202a shows a stepped-pyramid course. In at least one method step 174a a salt concentration 50a is varied during the salt spray fog test (cf. FIG. 14). In the concentration-time diagram 204a given in FIG. 14 two concentration profiles 206a, 208a are shown. The concentration is here plotted on the ordinate 196a and the time is plotted on the abscissa 198a. A concentration profile 206a shows a sine-shaped course. A further concentration profile 208a shows a stepped-pyramid course.

[0089] In at least one method step 168a a test chamber temperature 48a is varied during the sulfur dioxide test (cf. FIG. 13). In at least one method step 170a a sulfur dioxide concentration 52a is varied during the sulfur dioxide test (cf, FIG. 15). In the concentration-time diagram 210a given in FIG. 15 two concentration profiles 214a, 216a are shown. The concentration is herein plotted on the ordinate 196a and the time is plotted on the abscissa 198a. A concentration profile 214a shows a sine-shaped course. A further concentration profile 216a shows a stepped-pyramid course.

[0090] In at least one method step 184a a wire net 44a is produced from wire netting devices. In at least one method step 186a a wire 12a implemented of a high-tensile steel 74a is bent into helices 58a and/or into net elements 10a which are closed in themselves in a ring-shaped manner (cf. FIG. 21). To form a net element 10a, the wire 12a is bent in at least one method step 188a with a bending radius 46a that is in every work step greater than 5 mm. To form a net element 10a, the wire 12a is bent with a bending speed that is below 360 degrees per second in at least one method step 190a. In at least one method step 192a at least one wire net 44a is braided from the helices 58a and/or the net elements 10a that are closed in themselves.

[0091] Six further exemplary embodiments of the invention are shown in FIGS. 16 to 21. The following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, wherein regarding structural components given the same denomination, in particular regarding structural components having the same reference numerals, principally the drawings and/or the description of the other exemplary embodiments, in particular of FIGS. 1 to 15, may be referred to. In order to distinguish between the exemplary embodiments, the letter a has been added to the reference numerals of the exemplary embodiment of FIGS. 1 to 15. In the exemplary embodiments of FIGS. 16 to 21 the letter a has been substituted by the letters b to g.

[0092] FIG. 16 shows a cross section 22b of a wire 12b of a wire netting device, which cross section 22b is implemented perpendicularly to an extension direction 72b of the wire 12b. The wire 12b comprises a wire core 76b. The wire 12b comprises a corrosion protection 14b. The wire 12b comprises a coating 30b. The corrosion protection 14b is embodied as a coating 30b. The coating 30b is embodied as a corrosion protection layer 16b. Apart from the coating 30b, the wire 12b is implemented of a high-tensile steel 74b. The wire core 76b is implemented of a high-tensile steel 74b. The corrosion protection layer 16b completely encompasses the wire core 76b in a circumferential direction. The corrosion protection layer 16b has a constant layer thickness 84b. The corrosion protection layer 16b is embodied as a zinc-aluminum coating 28b. The zinc-aluminum coating 28b comprises an aluminum fraction of approximately 5%. The corrosion protection layer 16b is connected with the wire core 76b by substance-to-substance bond.

[0093] FIG. 17 shows a cross section 22c of a wire 12c of a wire netting device, which cross section 22c is implemented perpendicularly to an extension direction 72c of the wire 12c. The wire 12c comprises a wire core 76c. The wire 12c comprises a corrosion protection 14c. The wire 12c comprises a coating 30c. The corrosion protection 14c is embodied as a coating 30c. The coating 30c is embodied as a corrosion protection layer 16c. Apart from the coating 30c, the wire 12c is implemented of a high-tensile steel 74c. The wire core 76c is implemented of a high-tensile steel 74c. The corrosion protection layer 16c completely encompasses the wire core 76c in a circumferential direction. The corrosion protection layer 16c has a constant layer thickness 84c. The corrosion protection layer 16c is embodied as a zinc-aluminum coating 28c. The zinc-aluminum coating 28c comprises an aluminum fraction of approximately 5%. The zinc-aluminum coating 28c comprises at least one additive that is different from aluminum and/or from zinc. The additive is realized as magnesium. The additive comprises at least 0.5% of the corrosion protection layer 16c. The corrosion protection layer 16c is connected with the wire core 76c by substance-to-substance bond.

[0094] FIG. 18 shows a cross section 22d of a wire 12d of a wire netting device, which cross section 22d is implemented perpendicularly to an extension direction 72d of the wire 12d. The wire 12d comprises a wire core 76d. The wire 12d comprises a corrosion protection 14d. The corrosion protection 14d is embodied integrally with the wire 12d. The wire 12d is implemented of a high-tensile steel 74d. The corrosion protection 14d is implemented of a high-tensile steel 74d. The wire 12d is implemented of a stainless steel 218d and/or a stain-resistant steel 220d. The corrosion protection 14d is implemented of a stainless steel 218d and/or a stain-resistant steel 220d. The wire core 76d is embodied of a high-tensile steel 74d.

[0095] FIG. 19 shows a cross section 22e of a wire 12e of a wire netting device, which cross section 22e is implemented perpendicularly to an extension direction 72e of the wire 12e, The wire 12e comprises a wire core 76e. The wire 12e comprises a corrosion protection 14e. The wire 12e comprises a coating 30e. The corrosion protection 14e is implemented as a coating 30e, The coating 30e is implemented as a corrosion protection layer 16e. Apart from the coating 30e, the wire 12e is implemented of a high-tensile steel 74e. The wire core 76e is implemented of a high-tensile steel 74e. The corrosion protection layer 16e completely encompasses the wire core 76e in a circumferential direction. The corrosion protection layer 16e has a constant layer thickness 84e. The corrosion protection layer 16e is to a large extent embodied of an at least partly organic and/or at least partly inorganic carbon compound. The corrosion protection layer 16e is embodied at least partially as a synthetic coating 222e. The corrosion protection layer 16e is implemented at least partly of a graphene coating 224e, The corrosion protection layer 16e is connected with the wire core 76e by substance-to-substance bond.

[0096] FIG. 20 shows a cross section 22f of a wire 12f of a wire netting device, which cross section 22f is implemented perpendicularly to an extension direction 72f of the wire 12f. The wire 12f comprises a wire core 76f. The wire 12f comprises a corrosion protection 14f. The wire 12f comprises a plurality of coatings 30f, 226f. The wire 12f comprises two coatings 30f, 226f, wherein one coating 30f is embodied as an inner coating 228f and another coating 226f is embodied as an outer coating 230f. The inner coating 228f and the outer coating 230f are implemented of at least substantially different coating materials. The outer coating 230f completely encompasses the inner coating 228f at least in a circumferential direction. The corrosion protection 14f is embodied as a plurality of coatings 30f, 226f. The coatings 30f, 226f are embodied as two corrosion protection layers 16f. Apart from the coatings 30f, 226f, the wire 12f is implemented of a high-tensile steel 74f. The wire core 76f is implemented of a high-tensile steel 74f. The corrosion protection layers 16f completely encompass the wire core 76f in a circumferential direction. The corrosion protection layers 16f have constant layer thicknesses 84f, 232f. The corrosion protection layers 16f may have different and/or identical layer thicknesses 84f, 232f. The inner coating 228f is connected with the wire core 76f by substance-to-substance bond. The outer coating 230f is connected with the inner coating 228f by substance-to-substance bond.

[0097] FIG. 17 shows a wire net 44g. The wire net 44g is implemented as a safety net for a safeguarding against rockfall. The wire net 44g comprises a wire netting device. The wire netting device comprises a plurality exceeding two of mutually engaging net elements 10g. The net elements 10g are implemented of a high-tensile steel 74g. The net elements 10g are implemented in such a way that they are closed in themselves in a ring-shaped manner. The wire net 44g is embodied as a ring net 212g. The net elements 10g are embodied as ring elements 234g of the ring net 212g.

REFERENCE NUMERALS

[0098] 10 net element

[0099] 12 wire

[0100] 14 corrosion protection

[0101] 16 corrosion protection layer

[0102] 18 wire netting

[0103] 20 circumference

[0104] 22 cross section

[0105] 24 diameter

[0106] 26 wire surface

[0107] 28 zinc-aluminum coating

[0108] 30 coating

[0109] 32 bending cylinder

[0110] 34 diameter

[0111] 36 direction

[0112] 38 direction

[0113] 40 winding mandrel

[0114] 42 diameter

[0115] 44 wire net

[0116] 46 bending radius

[0117] 48 test chamber temperature

[0118] 50 salt concentration

[0119] 52 sulfur dioxide concentration

[0120] 54 holding unit

[0121] 56 reference wire

[0122] 58 helix

[0123] 60 main extension direction

[0124] 62 leg

[0125] 64 leg

[0126] 66 bending region

[0127] 68 proximity

[0128] 70 bending angle

[0129] 72 extension direction

[0130] 74 high-tensile steel

[0131] 76 wire core

[0132] 78 further wire

[0133] 80 zinc coating

[0134] 82 wire surface

[0135] 84 layer thickness

[0136] 86 bending unit

[0137] 88 clamping jaw

[0138] 90 clamping jaw

[0139] 92 test piece

[0140] 94 bending lever

[0141] 96 driver

[0142] 98 driver

[0143] 100 bending cylinder

[0144] 102 twisting unit

[0145] 104 twisting lever

[0146] 106 axis

[0147] 108 clamping jaw

[0148] 110 clamping jaw

[0149] 112 basic unit

[0150] 114 winding unit

[0151] 116 winding surface

[0152] 118 outer diameter

[0153] 120 test chamber

[0154] 122 flap

[0155] 124 opening

[0156] 126 distributer unit

[0157] 128 heating and/or cooling unit

[0158] 130 interior

[0159] 132 infeed and/or outfeed conduit

[0160] 134 control and/or regulation unit

[0161] 136 processor unit

[0162] 138 memory unit

[0163] 140 wall

[0164] 142 mounting unit

[0165] 144 angle

[0166] 146 corrosion measuring unit

[0167] 148 camera

[0168] 150 receptacle

[0169] 152 method step

[0170] 154 method step

[0171] 156 method step

[0172] 158 method step

[0173] 160 method step

[0174] 162 method step

[0175] 164 method step

[0176] 166 method step

[0177] 168 method step

[0178] 170 method step

[0179] 172 method step

[0180] 174 method step

[0181] 176 method step

[0182] 178 method step

[0183] 180 method step

[0184] 182 method step

[0185] 184 method step

[0186] 186 method step

[0187] 188 method step

[0188] 190 method step

[0189] 192 method step

[0190] 194 temperature-time diagram

[0191] 196 ordinate

[0192] 198 abscissa

[0193] 200 temperature profile

[0194] 202 further temperature profile

[0195] 204 concentration-time diagram

[0196] 206 concentration profile

[0197] 208 further concentration profile

[0198] 210 concentration-time diagram

[0199] 212 ring net

[0200] 214 concentration profile

[0201] 216 further concentration profile

[0202] 218 stainless steel

[0203] 220 stain-resistant steel

[0204] 222 synthetic coating

[0205] 224 graphene coating

[0206] 226 coating

[0207] 228 inner coating

[0208] 230 outer coating

[0209] 232 layer thickness

[0210] 234 ring element

[0211] 238 cycle A

[0212] 240 cycle B

[0213] 242 cycle C

[0214] 244 relative humidity curve

[0215] 246 temperature curve

[0216] 248 further ordinate

[0217] 250 salt spray phase

[0218] 252 freezing phase

[0219] 254 time axis

[0220] 256 test cycle