Title: Lubricant composition for seamless steel pipe working
Application Number: 200480025327 Application Date: 2004.09.03
Publication Number: 1845982 Publication Date: 2006.10.11
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C10M171/02,C10M173/02,B21B25/04,C10M103/00,C10M103/06,C10M145/40,C10N10/02,C10N20/02,C10N30/00,C10N3
Applicant(s) Name: Sumitomo Metal Ind Address:
Inventor(s) Name: Iida Sumio, Tanaka Kazuo
Attorney & Agent: liu xinyu
Abstract:
     A lubricant composition for seamless steel pipe working that without detriment to non-carburization properties and surpassing lubricity for hard-to-work materials such as 13-chrome steel and stainless steel, comprehensively satisfies requirements for properties such as storage stability, transferability in apparatus piping, sprayability to lubrication sites and uniform adherence to high-temperature mandrel bar. There is provided a lubricant composition whose viscosity characteristics are represented by the approximate expression: Y=a·X wherein Y: viscosity (mPa·s), X: shear rate (s<-1>), and during stationary storage, a: 4,000 to 40,000 and b: -1.0 to -0.3; while 90 sec after shear termination, a: 1,000 to 20,000 and b: -1.0 to -0.15.
Time: 5
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