Saw wire and cutting apparatus

Patent metadata

Field	Value
Publication number	US-10723042-B2
Application number	US-201815905376-A
Country	US
Kind code	B2
Filing date	Feb 26, 2018
Priority date	Mar 30, 2017
Publication date	Jul 28, 2020
Grant date	Jul 28, 2020

Abstract

A saw wire includes a metal wire containing rhenium-tungsten alloy. A rhenium content of the metal wire is at least 0.1 wt % and at most 10 wt % with respect to a total weight of rhenium and tungsten, an elastic modulus of the metal wire is at least 350 GPa and at most 450 GPa, a tensile strength of the metal wire is at least 3500 MPa, and a diameter of the metal wire is at most 60 μm.

First claim

What is claimed is:

1. A saw wire comprising:
a metal wire containing rhenium-tungsten alloy, wherein:
a rhenium content of the metal wire is at least 0.1 wt % and at most 10 wt % with respect to a total weight of rhenium and tungsten,
an elastic modulus of the metal wire is at least 350 GPa and at most 450 GPa,
a tensile strength of the metal wire is at least 3500 MPa, and
a diameter of the metal wire is at most 60 μm.

2. The saw wire according to claim 1 ,
wherein the diameter of the metal wire is 10 μm or more.

3. The saw wire according to claim 1 ,
wherein the tensile strength of the metal wire is at most 5000 MPa.

4. The saw wire according to claim 1 ,
wherein the diameter of the metal wire is uniform.

5. A cutting apparatus comprising the saw wire according to claim 1 .

6. The cutting apparatus according to claim 5 , further comprising:
a tension releasing device that releases tension exerted on the saw wire.

7. A saw wire comprising:
a metal wire containing potassium-doped tungsten, wherein:
a potassium content of the metal wire is at least 0.005 wt % and at most 0.010 wt % with respect to a total weight of potassium and tungsten,
an elastic modulus of the metal wire is at least 350 GPa and at most 450 GPa,
a tensile strength of the metal wire is at least 3500 MPa, and
a diameter of the metal wire is at most 60 μm.

8. The saw wire according to claim 7 ,
wherein the diameter of the metal wire is 10 μm or more.

9. The saw wire according to claim 7 ,
wherein the tensile strength of the metal wire is at most 5000 MPa.

10. The saw wire according to claim 7 ,
wherein the diameter of the metal wire is uniform.

11. A cutting apparatus comprising the saw wire according to claim 7 .

12. The cutting apparatus according to claim 11 , further comprising:
a tension releasing device that releases tension exerted on the saw wire.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Kanazawa Tomohiro
• Shibata Tetsuji
• Sugita Kazushige
• Gouda Hiroshi
• Kohyama Naoki

Classifications

• B23D61/18

  Sawing tools of special type, e.g. wire saw strands, saw blades or saw wire equipped with diamonds or other abrasive particles in selected individual positions {(cut-off wheels of bonded abrasive or with inserted abrasive blocks B24D5/12)} · CPC title

• B23D61/185 Primary

  Saw wires; Saw cables; Twisted saw strips · CPC title

• B23D65/00

  Making tools for sawing machines or sawing devices for use in cutting any kind of material · CPC title

• B28D5/042 Primary

  by cutting with blades or wires mounted in a reciprocating frame · CPC title

• B28D5/045 Primary

  by cutting with wires or closed-loop blades (B28D5/042 takes precedence) · CPC title