METHOD AND DEVICE FOR JOINING HOT SLABS BY MEANS OF FRICTION WELDING

Abstract

A method for joining hot slabs, which can be fed in succession to at least one roll stand. Joining sides of the hot slabs facing each other are, by pendular friction welding and/or vibration friction welding, simultaneously integrally bonded to a single metal intermediate piece arranged between the joining sides, by oscillatingly moving the intermediate piece at least largely parallel to the joining sides, while the joining sides are pressed against the intermediate piece and are held stationary; or simultaneously integrally bonded to at least one separate metal intermediate piece each, the intermediate pieces being arranged between the joining sides, by pressing the intermediate pieces arranged in series between the joining sides and oscillatingly moving the intermediate pieces at least largely parallel to the joining sides and oppositely to each other, while the joining sides are pressed against the intermediate pieces and held stationary.

Claims

1-6. (canceled)

7. A method for joining hot slabs which are fed in succession to at least one roll stand, comprising the steps of: separating in advance a single metallic intermediate piece from one of the hot slabs or using an existing slab remnant as the single metallic intermediate piece; disposing the single metallic intermediate piece between mutually facing joining sides of the hot slabs; and moving the single metallic intermediate piece in an oscillating manner at least largely parallel to the joining sides while pressing the joining sides against the intermediate piece and holding the joining sides in a locationally fixed manner so that the mutually facing joining sides of the hot slabs are simultaneously joined in a materially integral manner to the single metallic intermediate piece by pendular friction welding and/or vibration friction welding.

8. A method for joining hot slabs which are fed in succession to at least one roll stand, comprising the steps of: disposing separate metallic intermediate pieces in series between mutually facing joining sides of the hot slabs; and simultaneously joining each of the joining faces to at least one of the separate metallic intermediate pieces in a materially integral manner by pressing the intermediate pieces disposed in series between the joining sides against one another and moving the intermediate pieces in a mutually counter-oscillating manner at least largely parallel to the joining sides while pressing the joining sides against the intermediate pieces and holding the joining sides in a locationally fixed manner so that the mutually facing joining sides of the hot slabs are simultaneously joined in a materially integral manner to the single metallic intermediate piece by pendular friction welding and/or vibration friction welding.

9. The method according to claim 8, including severing in advance at least one of the separate intermediate pieces from one of the hot slabs.

10. The method according to claim 8, including using an available residual hot slab as at least one of the separate intermediate pieces.

11. The method according to claim 7, including selecting a composition of the single intermediate piece so that the composition corresponds to a composition of the hot slabs or differs from the composition of at least one hot slab.

12. The method according to claim 8, including selecting a composition of at least one of the separate intermediate pieces so that the composition corresponds to a composition of the hot slabs or differs from the composition of at least one hot slab.

13. A device for joining hot slabs which are fed in succession to at least one roll stand, comprising: at least one holding installation for holding a first hot slab and a second hot slab so that joining sides of the hot slabs are disposed so as to face one another and be mutually spaced apart; and at least one oscillation installation for holding a single metallic intermediate piece between the joining sides, and for generating an oscillating movement of the intermediate piece in a manner at least largely parallel to the joining sides, wherein the intermediate piece is separated in advance from a hot slab or formed by a remnant of an existing slab, wherein the holding installation is configured to press the joining sides against the intermediate piece at least during the oscillating movement of the intermediate piece.

14. A device for joining hot slabs which are fed in succession to at least one roll stand, comprising: at least one holding installation for holding a first hot slab and a second hot slab so that joining sides of the hot slabs are disposed so as to face one another and be mutually spaced apart; and at least one oscillation installation for holding at least two separate metallic intermediate pieces in mutual physical contact and in series between the joining sides, and for generating counter-oscillating movements of the intermediate pieces in a manner at least largely parallel to the joining sides, wherein the holding installation is configured to press the joining sides against the intermediate pieces at least during the oscillating movements of the intermediate pieces.

Description

[0029] The invention will be explained in an exemplary manner hereunder with reference to the appended figures by means of preferred embodiments, wherein the features illustrated hereunder may constitute an advantageous or refining aspect of the invention in each case individually or in various technically expedient combinations of at least two of these features with one another. In the figures:

[0030] FIG. 1 shows a schematic illustration of an exemplary embodiment for a device according to the invention; and

[0031] FIG. 2 shows a schematic illustration of a further exemplary embodiment for a device according to the invention.

[0032] Identical components, or functionally equivalent components, respectively, are provided with the same reference signs in the figures. A repetition of the description of said components may be omitted.

[0033] FIG. 1 shows a schematic illustration of an exemplary embodiment for a device 1 according to the invention for joining hot slabs 2 and 3 which are able to be fed in succession to at least one roll stand (not shown).

[0034] The device 1 comprises a holding installation 4 for holding a first hot slab 2 and a second hot slab 3 such that joining sides 5 and 6 of the hot slabs 2 and 3 are disposed so as to face one another and be mutually spaced apart. To this end, the holding installation 4 comprises a dedicated holding unit 7 or 8, respectively, for each hot slab 2 or 3, respectively.

[0035] The device 1 furthermore comprises an oscillation installation 9 for holding a single metallic intermediate piece 10 between the joining sides 5 and 6, and for generating an oscillating movement of the intermediate piece 10 in a manner largely parallel or precisely parallel to the joining sides 5 and 6, said oscillating movement being indicated by the double arrow 11. The holding installation 4 at least during the oscillating movement of the intermediate piece 10 is conceived for pressing the joining sides 5 and 6 against the intermediate piece 10.

[0036] Prior thereto, the intermediate piece 10 may have been severed from one of the hot slabs 2 or 3, respectively. Alternatively, the intermediate piece 10 may be a residual hot slab piece already available. The composition of the intermediate piece can be selected in such a manner that the composition corresponds to a composition of the hot slabs 2 and 3, or differs from the composition of at least one hot slab 2 or 3, respectively.

[0037] FIG. 2 shows a schematic illustration of a further exemplary embodiment for a device 12 according to the invention for joining hot slabs 2 and 3 which are able to be fed in succession to at least one roll stand (not shown).

[0038] The device 12 differs from the exemplary embodiment shown in FIG. 1 in that the device 12 has an oscillation installation 17 for holding two separate metallic intermediate pieces 13 and 14 in mutual physical contact and in series between the joining sides 5 and 6, and for generating counter-oscillating movements of the intermediate pieces 13 and 14 in a manner largely parallel or precisely parallel to the joining sides 5 and 6, as is indicated by the arrow combinations 15 and 16. The vibration stresses on the holding installations 7 and 8 as well as on the oscillation installation 17 are canceled on account of the counter-oscillating movement. The holding installation 4 at least during the oscillating movements of the intermediate pieces 13 and 14 is conceived for pressing the joining sides 5 and 6 against the intermediate pieces 13 and 14.

LIST OF REFERENCE SIGNS

[0039] 1 Device [0040] 2 Hot slab [0041] 3 Hot slab [0042] 4 Holding installation [0043] Joining side of 2 [0044] 6 Joining side of 3 [0045] 7 Holding unit of 4 [0046] 8 Holding unit of 4 [0047] 9 Oscillation installation [0048] Intermediate piece [0049] 11 Double arrow (movement of 10) [0050] 12 Device [0051] 13 Intermediate piece [0052] 14 Intermediate piece [0053] Arrow combination (oscillating movement of 13) [0054] 16 Arrow combination (oscillating movement of 14) [0055] 17 Oscillation installation