LUBRICANT FOR HOT-ROLLING TOOLS, AND METHOD FOR SURFACE TREATMENT OF MANDREL BAR FOR USE IN PRODUCING SEAMLESS PIPE BY HOT ROLLING

WIPO Patent Application WO/2011/099304

A1

A lubricant for hot-rolling tools which is prepared by dispersing and dissolving an oxide-type layer compound (such as potassium tetrasilicate mica, sodium tetrasilicate mica, vermiculite or bentonite), a boric acid compound (such as boric acid, potassium borate, or sodium borate), and graphite in water, wherein the content ratio of the oxide-type layer compound to the boric acid compound is 10:90 to 70:30 by mass, and the graphite content is 1.0 to 4.5%. In rolling with a mandrel mill, the lubricant is applied to the surface of a mandrel bar to form a lubricating film on the surface thereof. Thus, the lubricant exhibits excellent anti-seizure properties, while no lubricant residue remains on the inside surface of the resulting pipe.

JPH0987653	WATER-SOLUBLE CUTTING OIL SOLUTION FOR ALUMINUM HAVING DISCOLORATION PREVENTING CHARACTER AND ITS PRODUCTION
JPH07509517	[Title of the Invention] A concentrated lubricant containing a fatty amine and an aqueous lubricant solution, a method for producing the same, and an application thereof.

SAITOU KENICHI (JP)

PCT/JP2011/000789

August 18, 2011

February 14, 2011

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SUMITOMO METAL IND (JP)
SAITOU KENICHI (JP)

C10M173/02; B21B25/04; C10M125/02; C10M125/26; C10M125/30; C10N30/00; C10N30/06; C10N40/24

JPH08165489A	1996-06-25
JP2001234189A	2001-08-28
JPH11166188A	1999-06-22
JP2003313573A	2003-11-06
JPH05171165A	1993-07-09
JPS6416894A	1989-01-20
JP2004344923A	2004-12-09
JPH06262220A	1994-09-20
JP2001001016A	2001-01-09
JPH11226614A	1999-08-24
JPH0978080A	1997-03-25

See also references of EP 2537915A4

MORI, Michio et al. (JP)
Woods Michio (JP)

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