Lubricant material for assisting machining process, lubricant sheet for assisting machining process, and machining method using the same

Patent metadata

Field	Value
Publication number	US-11214748-B2
Application number	US-201816607265-A
Country	US
Kind code	B2
Filing date	Apr 20, 2018
Priority date	Apr 25, 2017
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

A lubricant material for assisting machining process comprising fullerene.

First claim

The invention claimed is:

1. A lubricant sheet for assisting machining process comprising
the sheet being at least partially provided by a layer made of a lubricant material for assisting machining process, the lubricant material for assisting machining process comprising:
a fullerene;
a high molecular weight compound (A) having a weight average molecular weight of 5×10 4 or larger and 1×10 6 or smaller;
a medium molecular weight compound (B) having a weight average molecular weight of 1×10 3 or larger and 2×10 4 or smaller; and
a carbon (C), other than the fullerene, having an average particle size of 100 to 1000 μm.

2. The lubricant sheet for assisting machining process according to claim 1 , wherein
the fullerene comprises C 60 .

3. The lubricant sheet for assisting machining process according to claim 1 , wherein
the high molecular weight compound (A) comprises a thermoplastic resin having the weight average molecular weight of 5×10 4 or larger and 1×10 6 or smaller, and
the medium molecular weight compound (B) comprises a thermoplastic resin having the weight average molecular weight of 1×10 3 or larger and 2×10 4 or smaller.

4. The lubricant sheet for assisting machining process according to claim 1 , wherein
the high molecular weight compound (A) comprises a water-soluble thermoplastic resin and/or a water-insoluble thermoplastic resin, wherein
the water-soluble thermoplastic resin comprises one or more selected from the group consisting of polyalkylene oxide, polyalkylene glycol, an ester compound of polyalkylene glycol, an ether compound of polyalkylene glycol, water-soluble urethane, a polyether-based water-soluble resin, water-soluble polyester, sodium poly(meth)acrylate, polyacrylamide, polyvinylpyrrolidone, polyvinyl alcohol, an ether compound of cellulose, an ester compound of cellulose, and modified polyamide, and
the water-insoluble thermoplastic resin comprises one or more selected from the group consisting of a urethane-based polymer, an acrylic-based polymer, a vinyl acetate-based polymer, a vinyl chloride-based polymer, a polyester-based polymer, a polyolefin-based polymer, a polystyrene-based resin, and copolymers thereof.

5. The lubricant sheet for assisting machining process according to claim 1 , wherein
the medium molecular weight compound (B) comprises a water-soluble thermoplastic resin and/or a water-insoluble thermoplastic resin, wherein
the water-soluble thermoplastic resin comprises one or more selected from the group consisting of polyalkylene glycol, a monoether compound of polyalkylene oxide, a monostearate compound of polyalkylene oxide, and a polyalkylene oxide compound.

6. The lubricant sheet for assisting machining process according to claim 1 , wherein
a content of the fullerene is 0.1 to 30 parts by mass based on 100 parts by mass in total of the fullerene, the high molecular weight compound (A), the medium molecular weight compound (B), and the carbon (C).

7. The lubricant sheet for assisting machining process according to claim 1 , the sheet being at least partially provided with an adhesive layer.

8. The lubricant sheet for assisting machining process according to claim 7 , wherein
the adhesive layer comprises an acrylic-based polymer.

9. The lubricant sheet for assisting machining process according to claim 1 , wherein
a thickness of the layer made of the lubricant material for assisting machining process is 0.1 to 20 mm.

10. A machining method comprising
a machining step of machining a workpiece material with a machining tool while bringing the lubricant sheet for assisting machining process according to claim 1 into contact with the machining tool and/or a to-be-processed portion of the workpiece material.

11. The machining method according to claim 10 , wherein
in the machining step, a through-hole is formed by machining.

12. The machining method according to claim 10 , wherein
the workpiece material is one or more selected from the group consisting of titanium alloy, aluminum alloy, superalloy, stainless steel, carbon fiber-reinforced plastic, aramide fiber-reinforced plastic, and composite materials comprising these.

Assignees

• Mitsubishi Gas Chemical Co

Inventors

• Horie Shigeru
• Matsuyama Yousuke
• Nakamura Kazuhiro
• Ishikura Kenji

Classifications

• B23B35/00 Primary

  Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods · CPC title

• C10M2207/127

  polycarboxylic · CPC title

• B23B2222/80

  Stainless steel · CPC title

• C10M2217/003

  used as base material · CPC title

• C10M2209/109

  esterified · CPC title