Superalloy Saw Blade

Abstract

A separating tool (1) including a tooth supporting body (2) and a plurality of teeth (3) being arranged at the tooth supporting body (2) serves to separate workpieces of steel, the workpieces having a high temperature. The tooth supporting body (2) is made of a superalloy (10).

Claims

1. A separating tool, comprising: a tooth supporting body, the tooth supporting body being made of a superalloy; and a plurality of teeth, the teeth being arranged at the tooth supporting body.

2. The separating tool of claim 1, wherein the superalloy is a nickel-based superalloy.

3. The separating tool of claim 1, wherein the teeth each include a tooth tip having a geometrically defined cutting edge.

4. The separating tool of claim 3, wherein the cutting edge includes a rake surface having a negative rake angle.

5. The separating tool of claim 3, wherein the tooth tip is coated with a hard material layer.

6. The separating tool of claim 1, wherein the separating tool is a saw band.

7. The separating tool of claim 3, wherein the teeth are each formed by a protrusion and an insert, the protrusion being arranged at the tooth supporting body and the insert being arranged at the protrusion, the insert forming the tooth tip and the cutting edge of the tooth.

8. The separating tool of claim 7, wherein the protrusion is made of the superalloy.

9. The separating tool of claim 7, wherein the insert is made of carbide.

10. The separating tool of claim 7, wherein the insert is connected to the protrusion by welding or high-temperature brazing or soldering.

11. The separating tool of claim 1, wherein the teeth each include a tooth tip being partly covered by cutting particles to form geometrically undefined cutting edges.

12. The separating tool of claim 11, wherein the cutting particles include cubic boron nitride (CBN), cutting ceramics, carbide or combinations thereof.

13. The separating tool of claim 1, further comprising: a carrier band section, the carrier band section being made of the superalloy; and an edge wire section, the edge wire section being connected to the carrier band section, the edge wire section forming tooth tips and cutting edges of the teeth.

14. A tooth supporting body for a separating tool which includes the tooth supporting body and a plurality of teeth being arranged at the tooth supporting body, wherein the tooth supporting body is made of a superalloy.

15. Use of a separating tool, dividing tool or chipping tool including a tooth supporting body being made of a superalloy and a plurality of teeth being arranged at the tooth supporting body as a high-temperature steel-separating tool for separating a blank for a workpiece made of steel with a temperature of at least 750° C.

16. The use of claim 15, wherein separating is realized during steel production.

17. Use of a chipping tool including a tooth supporting body being made of a superalloy and a plurality of teeth being arranged at the tooth supporting body as: an underwater workpiece separating tool for separating a workpiece underwater; or a tool for separating a workpiece with pure water as cooling lubricant.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In the following, the invention is further explained and described with respect to preferred exemplary embodiments illustrated in the drawings.

[0063] FIG. 1 illustrates a side view of a part of a first exemplary embodiment of the new band-shaped separating tool.

[0064] FIG. 2 illustrates a view of the separating tool according to FIG. 1 from above.

[0065] FIG. 3 illustrates a side view of a part of a second exemplary embodiment of the new band-shaped separating tool.

[0066] FIG. 4 illustrates a detailed view of a part of the separating tool according to FIG. 3.

[0067] FIG. 5 illustrates a side view of a part of a third exemplary embodiment of the new band-shaped separating tool.

[0068] FIG. 6 illustrates a side view of a part of a fourth exemplary embodiment of the new circular separating tool.

[0069] FIG. 7 illustrates the detail A from FIG. 6.

DETAILED DESCRIPTION

[0070] FIGS. 1 and 2 illustrate views of a section of a first exemplary embodiment of a new separating tool 1, which in this case is designed to be band-shaped. The section is indicated by respective truncation lines in the left and right part of the illustration of FIG. 1. Such a band-shaped separating tool 1 is often designated as saw band in the prior art.

[0071] The illustrations of these figures and the following figures are true to scale such that the geometric relations between the elements of the separating tool 1 can be derived from the figures.

[0072] The separating tool 1 includes a tooth supporting body 2 and a plurality of teeth 3 being arranged at the tooth supporting body 2. The teeth 3 may be designed to be completely or partly one piece with the tooth supporting body 2. In the present case, the teeth 3 are arranged in repeated groups of geometrically differently designed teeth 3 along the tooth supporting body 2. The teeth 3 are here arranged at the tooth supporting body 2 with a variable division (i.e. varying distances between them). However, the teeth 3 could also not be arranged according to the group technology and/or with a constant division (i.e. identical distances between them) at the tooth supporting body 2.

[0073] The teeth 3 each include a tooth tip 7 being arranged at the end of the respective tooth 3 opposite to the tooth supporting body 2. The teeth 3 are each formed by a protrusion 4 of the tooth supporting body 2 as well as an insert 5. The insert 5 is made of a material being harder than the material of the protrusions 4 and of the tooth supporting body 2 of the separating tool 1.

[0074] Preferably, the material of the insert 5 is carbide (hard metal). However, this could also be a different material. The inserts 5 are fixedly connected to the respective associated protrusion 4, especially by brazing, soldering or welding.

[0075] The cutting edge 6 of the tooth 3 is formed at the insert 5. In the present case, this is a cutting edge 6 being geometrically defined. The cutting edge 6 includes a rake surface 8 having a negative rake angle. The sense of direction of band movement 9 of the separating tool 1 here goes from left to right. However, the rake angle could also be positive or 0°.

[0076] The new separating tool 1 has a special material composition which achieves that it is possible to separate workpieces of steel having a high temperature safely, efficiently and environmentally friendly by the separating tool 1. Another possible application if they use of the separating tool 1 for separating a workpiece underwater or as a tool for separating a workpiece with pure water as cooling lubricant.

[0077] For this purpose, the tooth supporting body 2 is made of a superalloy 10. The protrusions 4 are also made of the superalloy 10. The tooth supporting body 2 may be additionally coated with a heat insulation layer 11 and/or a hard material layer 12. The layers 11, 12 are not present in the embodiment of the separating tool 1 according to FIGS. 1 and 2 such that they do not include the reference numerals 11 and 12. It is referred to the following drawings in which the layers 11, 12 are partly present.

[0078] In the present example, the superalloy 10 is a nickel-based superalloy 13. However, it could also be a different superalloy 10.

[0079] FIGS. 3 and 4 illustrate another exemplary embodiment of the new separating tool 1 which does not fall under the wording of the independent claims. Once again, this is a separating tool 1 including an elongated band-shaped tooth supporting body 2.

[0080] In contrast to the embodiment of the separating tool 1 according to FIGS. 1, 2, the teeth 3 each include a tooth tip 7 being partly covered by cutting particles 14 to form a plurality of geometrically undefined cutting edges 6. The teeth 3 are arranged along the tooth supporting body 2 with a constant division (i.e. identical distances between them). In this embodiment of the separating tool 1, the tooth supporting body 2 is not made of the superalloy 10, but it is coated with a heat insulation layer 11. However, it would also be possible that the tooth supporting body 2 was additionally made of the superalloy 10 and/or was coated with a hard material layer 12. FIG. 5 illustrates another exemplary embodiment of the new separating tool 1 which does not fall under the wording of the independent claims. In this case, the separating tool 1 is a bimetal saw band including a carrier band section 15 and an edge wire section 16 being connected thereto.

[0081] The edge wire section 16 forms the tooth tips 7 and the cutting edges 6 of the teeth 3. The rest of the originally continuously band-shaped edge wire section 6 has been removed by milling.

[0082] The carrier band section 15 is coated with the hard material layer 12. In this case, the carrier band section 15 is not made of the superalloy 10. However, it could be made of the superalloy 10 and/or coated with a heat insulation layer 11.

[0083] FIGS. 6 and 7 illustrate views of another exemplary embodiment of the separating tool 1. In this case, the separating tool 1 is designed as a circular saw blade.

[0084] The teeth 3 are arranged at the tooth supporting body 2 according to the group technology and with a variable tooth division (i.e. varying distances between them). Protrusions 4 are formed at the tooth supporting body 2. Inserts 5 are fixedly connected to the protrusions 4. The rake surfaces 8 have a negative rake angle. The tooth supporting body 2 is made of the superalloy 10. The tooth tips 7 and another part of the protrusions 4 our coated with the hard material layer 12.

[0085] It is to be noted that the above-described different material designs of the embodiments concerning the superalloy 10, the heat insulation layer 11 and the hard material layer 12 can also be applied to the geometries of the other embodiments.