Anti-Seizure Agent for Hot Steel Working

• US 20090297717A1
• Filed: 03/27/2006
• Published: 12/03/2009
• Est. Priority Date: 03/31/2005
• Status: Active Grant

• Current Assignee: Nippon Steel Corporation
• Original Assignee: Nippon Steel & Sumitomo Metal Corporation (Nippon Steel Corporation)
• Inventors: Onozawa, Teruo, Imoto, Yoshimi, Hori, Hirofumi, Nakanishi, Tetsuya
• Granted Patent: US 8,263,534 B2
• Time in Patent Office: Days
• US Class Current: 427/372.2
• CPC Class Codes: B21B 45/02 for lubricating, cooling, or cleaning in particular in combination with forging or pressing devices B21B15/005, control of flatness or profile using lubricating or cooling B21B37/44
• CPC Class Codes: C10M 173/02 not containing mineral or fatty oils
• CPC Class Codes: C10M 2201/02 Water
• CPC Class Codes: C10M 2201/05 Metals; Alloys
• CPC Class Codes: C10M 2201/062 Oxides; Hydroxides; Carbonates or bicarbonates
• CPC Class Codes: C10M 2201/0623 used as base material
• CPC Class Codes: C10M 2201/087 Boron oxides, acids or salts
• CPC Class Codes: C10M 2201/1033 used as base material
• CPC Class Codes: C10M 2201/105 Silica
• CPC Class Codes: C10M 2201/12 Glass
• CPC Class Codes: C10M 2201/123 used as base material
• CPC Class Codes: C10M 2209/084 Acrylate; Methacrylate
• CPC Class Codes: C10M 2209/108 etherified
• CPC Class Codes: C10M 2219/042 Sulfate esters
• CPC Class Codes: C10M 2219/044 Sulfonic acids, Derivatives thereof, e.g. neutral salts
• CPC Class Codes: C10M 2221/00 Organic macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
• CPC Class Codes: C10N 2010/14 Group 7
• CPC Class Codes: C10N 2010/16 Groups 8, 9, or 10
• CPC Class Codes: C10N 2020/06 Particles of special shape or size
• CPC Class Codes: C10N 2040/24 without essential removal of material , e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
• CPC Class Codes: C10N 2040/241 : Manufacturing joint-less pipes
• CPC Class Codes: C10N 2040/242 : Hot working
• CPC Class Codes: C10N 2040/243 : Cold working
• CPC Class Codes: C10N 2050/02 : dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating

Abstract

An anti-seizure agent for hot steel working that exhibits excellent wettability and surface film-adherability comprises: an inorganic component (first component); sodium hydroxide (second component); water-soluble resins and/or water-soluble surfactants (third component); and water. With the mass of the sum of the first component, the second component, and the third component as 100 mass %, the anti-seizure agent contains: 96.5 mass % or more and 99.98 mass % or less of the first component; 0.01 mass % or more and 2.0 mass % or less of the second component; and 0.01 mass % or more and 1.5 mass % or less of the third component, and the inorganic component is one or more selected from a group consisting of Al₂O₃, SiO₂, CaO, B₂O₃, K₂O, and Na₂O. A coating layer formed after application solidly adheres to the steel and does not come off in the environment of both cold and hot working.

Claims

1. An anti-seizure agent for hot steel working comprising:

an inorganic component as a first component;

sodium hydroxide as a second component;

water-soluble resins and/or water-soluble surfactants as a third component; and

water,

wherein, to the mass of the sum of said first component, said second component, and said third component as 100 mass %, said anti-seizure agent contains;

96.5 mass % or more and 99.98 mass % or less of said first component;

0.01 mass % or more and 2.0 mass % or less of said second component; and

0.01 mass % or more and 1.5 mass % or less of said third component, and

said inorganic component is one or more selected from a group consisting of Al₂O₃, SiO₂, CaO, B₂O₃, K₂O, and Na₂O.

2. An anti-seizure agent for hot steel working according to claim 1, wherein, to the total mass of said inorganic component as 100 mass %, said inorganic component contains:

30 mass % or more and 70 mass % or less of Al₂O₃, 35 mass % or more and 80 mass % or less of SiO₂, 0 mass % or more and 1.0 mass % or less of CaO, 0.05 mass % or more and 2.0 mass % or less of B₂O₃, 0 mass % or more and 0.5 mass % or less of K₂O, and 0.02 mass % or more and 1.0 mass % or less of Na₂O.

3. An anti-seizure agent for hot steel working according to claim 1.

wherein said inorganic component consists of a ceramic base material and an inorganic binder,

said inorganic binder is fine powder of frit.

4. An anti-seizure agent for hot steel working according to claim 1, wherein, as a fourth component, metallic cobalt and/or metallic nickel are further included, content thereof is 0.1˜

10 mass % to the total mass of said inorganic component as 100 mass %.

5. An anti-seizure agent for hot steel working according to claim 1, wherein fine powder of a cobalt compound and/or a nickel compound is further included as a fifth component, content thereof is 0.01˜

1 mass % to the total mass of said inorganic component as 100 mass %.

6. A method for hot steel working comprising the steps of:

coating the anti-seizure agent described in claim 1 at room temperature on a surface of a material to be processed;

drying said anti-seizure agent being coated and forming a coating layer on the surface of said material to be processed; and

carrying out hot working by use of said material said coating layer is formed thereon.

7. A method for manufacturing seamless steel pipes comprising the steps of:

coating an anti-seizure agent described in claim 1 at room temperature on a surface of a material to be processed;

drying said anti-seizure agent being coated and forming a coating layer on the surface of said material to be processed; and

carrying out piercing-rolling by use of said material said coating layer is formed thereon.