Aqueous lubricant for plastic working of metal material and having superior gas clogging resistance and post-moisture absorption workability

Patent metadata

Field	Value
Publication number	US-10472585-B2
Application number	US-201414903785-A
Country	US
Kind code	B2
Filing date	Jun 27, 2014
Priority date	Jul 10, 2013
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A water-based lubricant for plastic working of a metallic material is obtained by adding to a water-based medium: (A) a polymer and/or a salt thereof containing a carboxylic acid or a derivative thereof as a constituent monomer; (B) an oxoacid of tungsten, of silicon, or of phosphorus, or a condensate thereof, and/or a salt thereof; (C) a hydroxide of an alkali metal; and (D) a lubricating component (D), and the solid content weight ratio (A)/[(A)+(B)+(C)+(D)] is 0.05 to 0.4.

First claim

The invention claimed is:

1. A water-based lubricant for plastic working of a metallic material, wherein the water-based lubricant is obtained by adding to a water-based medium:
(A) a polymer and/or a salt thereof containing a carboxylicacid or a derivative thereof as a constituent monomer;
(B) an oxoacid of tungsten, an oxoacid of silicon, or an oxoacid of phosphorus, or a condensate thereof, and/or a salt thereof;
(C) lithium hydroxide; and
(D) a lubricating component, and
wherein a solid content weight ratio (A)/[(A) (B)+(C)+(D)] is 0.05 to 0.4 and a molar ratio (B)/(C) of the component (B) and the component (C) is 0.3 to 2.7.

2. The water-based lubricant for plastic working of a metallic material according to claim 1 , wherein the water-based lubricant has pH of 7 to 12.

3. The water-based lubricant for plastic working of a metallic material according to claim 1 , wherein a solid content weight ratio (D)/[(A)+(B)+(C)+(D)] is 0.1 to 0.3.

4. The water-based lubricant for plastic working of a metallic material according to claim 1 , wherein the component (D) essentially comprises two components of: (a) a wax and (b) an acidic phosphoric ester-based extreme-pressure agent, and a solid content weight ratio (a)/(b) of the component (a) and the component (b) is 0.2 to 9.0.

5. The water-based lubricant for plastic working of a metallic material according to claim 4 , wherein the component (a) has an average particle size of 30 to 1000 nm.

6. The water-based lubricant for plastic working of a metallic material according to claim 4 , wherein the component (a) is a polyethylene wax with a melting point of 130 to 170° C.

7. The water-based lubricant for plastic working of a metallic material according to claim 4 , wherein the component (b) is a phosphoric ester having an ether linkage and/or a C1 to C20 alkyl group, the phosphoric ester being able to be dispersed and/or dissolved in an alkaline aqueous solution.

8. A method for producing a metallic material with a lubrication film, the method comprising:
bringing the water-based lubricant for plastic working of a metallic material according to claim 1 into contact with the metallic material, and
evaporating moisture to form the lubrication film on a surface of the metallic material.

9. A metallic material comprising, on a surface thereof, a lubrication film obtained from the water-based lubricant for plastic working of a metallic material according to claim 1 .

10. A method for producing a water-based lubricant for plastic working of a metallic material, the method comprising adding to a water-based medium: (A) a polymer and/or a salt thereof containing a carboxylic acid or a derivative thereof as a constituent monomer; (B) an oxoacid of tungsten, an oxoacid of silicon, or an oxoacid of phosphorus, or a condensate thereof, and/or a salt thereof; (C) lithium hvdroxidea hydroxide of an alkali metal: and (D) a lubricating component (D), wherein a solid content weight ratio (A)/[(A)+(B)+(C)+(D)] is 0.05 to 0.4, and a molar ratio (B)/(C) of the component (B) and the component (C) is 0.3 to 2.7.

11. The method according to claim 10 , wherein the water-based lubricant has pH of 7 to 12.

12. The method according to claim 10 , wherein the component (C) is a lithium hydroxide.

13. The method according to claim 10 , wherein a solid content weight ratio (D)/[(A)+(B)+(C)+(D)] is 0.1 to 0.3.

14. The method according to claim 10 , wherein the component (D) essentially comprises two components of: (a) a wax and (b) an acidic phosphoric ester-based extreme-pressure agent, and a solid content weight ratio (a)/(b) of the component (a) and the component (b) is 0.2 to 9.0.

15. The method according to claim 14 , wherein the component (a) has an average particle size of 30 to 1000 nm.

16. The method according to claim 14 , wherein the component (a) is a polyethylene wax with a melting point of 130 to 170° C.

17. The method according to claim 14 , wherein the component (b) is a phosphoric ester having an ether linkage and/or a C1 to C20 alkyl group, the phosphoric ester being able to be dispersed and/or dissolved in an alkaline aqueous solution.

Assignees

• Nihon Parkerizing

Inventors

• Mochizuki Masaru
• Kumagai Manabu
• Kobayashi Yuta

Classifications

• C10N2040/20

  Metal working · CPC title

• C10N2030/10

  Inhibition of oxidation, e.g. anti-oxidants · CPC title

• C10M2205/026

  Butene · CPC title

• C10N2030/64

  Environmental friendly compositions · CPC title

• C10N2030/02

  Pour-point; Viscosity index · CPC title