JP2014070277A5 - - Google Patents

Description

The invention according to claim 5, in which the surface roughness Ra of that has a 0.01~0.5μ m.

Furthermore, the invention according to claim 6 is a cutting wire made of the Co alloy thin wire according to any one of claims 1 to 5 , and when cutting an inorganic brittle material of a workpiece at an arbitrary cut surface,
The corrosive solution that corrodes and dissolves the workpiece by a corrosive etching phenomenon is interposed in the contact interface between the workpiece and the cutting wire, and the corrosive dissolution occurs only at the contact interface that contacts the cutting wire. An inorganic brittle material cutting method characterized by continuously cutting at a predetermined cutting speed and traveling speed while energizing and heating a cutting wire at a predetermined temperature.

[0016]
【Effect of the invention】
Co alloys having these compositions are excellent in cold workability compared to, for example, ordinary stainless steel wires, and can improve mechanical characteristics significantly by precipitation hardening after the processing, for example, several tens of μm. It is preferable that the diameter can be reduced to a fine wire of a certain level, and sufficient strength maintenance and corrosion resistance are provided, as well as energization characteristics suitable for the present invention. Therefore, according to the etching cut wire of the present invention using a Co alloy, the abrasive can be cut with a relatively loose tension without interposing abrasive grains at the cutting interface as in the prior art, Substantial cutting loss can be reduced.

Claims (6)

A cutting wire made of a thin metal wire for chemically fusing and cutting inorganic brittle materials by corrosive etching,
The metal wire is composed of a Co alloy containing Ni: 12.0 to 20.0%, Cr: 12.0 to 25.0%, and Co: 35 to 60% in terms of mass%, and the wire diameter is 0.00. Along with the high strength properties of less than 2mm and proof strength 1500-2200N / mm2,
Pitting corrosion potential (V'c10) based on JIS-G0577: 0.60 to 0.75 V, and an electrical resistivity of 80 to 110 μΩ · cm (provided in a room temperature environment) (Co alloy fine wire) Etching cut wire, characterized by comprising:   The wire for etching cut according to claim 1, wherein the electrical resistivity of the Co alloy fine wire is 95 to 105 µΩ · cm.   Co alloy fine wire is C: ≦ 0.30%, Si: ≦ 2.0%, Mn: ≦ 2.0%, Ni: 14.0-20.0%, Cr: 15.0-25 in mass%. 0.0%, Mo: 2.0 to 10.0%, Co: 40.0 to 55.0%, and the precipitation-hardening type Co alloy consisting of the remaining Fe and inevitable impurities. Item 3. An etching cut wire according to Item 1 or 2.   Co alloy fine wire is C: 0.08-0.20%, Si: ≦ 1.0%, Mn: ≦ 2.0%, Ni: 14.0-18.5%, Cr: 19. 0-25.0%, Mo: 4.0-8.0%, and Co: 40.0-55.0%, and Al: 0.1-4.0%, Ti: 0.10-2 0.5%, Nb: 0.01 to 1.0%, and W: 0.50 to 5.0%, and the precipitation-hardening type Co alloy composed of the remaining Fe and inevitable impurities. The wire for etching cut according to claim 1 or 3, wherein The surface roughness Ra is 0.01-0.5 micrometer, The wire for etching cuts in any one of Claims 1-4. In cutting wire made of Co alloy thin wire according to any one of claims 1 to 5, when cutting the frangible inorganic brittle material of the workpiece at an arbitrary cut surface,
  A corrosive solution that corrodes and dissolves the workpiece by a corrosion etching phenomenon is interposed at the contact interface between the workpiece and the cutting wire. A method for cutting an inorganic brittle material, characterized in that the cutting wire is continuously cut at a constant cutting speed and a traveling speed while being electrically heated to a predetermined temperature so as to occur only at the contact interface.