LUBRICANT FOR HOT PLASTIC WORKING

Japanese Patent JP2006188637

A

To obtain a lubricant having excellent formability and usability in hot plastic working, especially an aqueous lubricant having a high coefficient of friction during biting in hot rolling processing and a low coefficient of friction during plate threading and exhibiting lubricating effects such as slip prevention effect and seizing prevention effect even in high-pressure rolling.

The lubricant for hot plastic working comprises an expansive clay compound, a water-soluble glass and a nonionic water-soluble polymer in an aqueous medium containing water. The coefficient of friction of the lubricant has the maximum value at 200°C-500°C, the maximum value is ≥0.3 and the coefficient of friction at 800°C is <0.3. A (Na2O, Li2O)-(P2O5-B2O3)-based water-soluble glass is preferably used as the water-soluble glass and the amount of Na2O and/or Li2O is preferably 10-40% by mass calculated as oxide. The lubricant is further mixed with a solid lubricant.

YAMADA SEIJI
OTA SHUNICHI
MOCHIZUKI ATSUO

JP2005002929A

July 20, 2006

January 07, 2005

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TOPY IND

C10M173/02; C10M103/02; C10M103/06; C10M105/24; C10M125/28; C10M125/30; C10M129/16; C10M129/76; C10M145/04; C10M145/28; C10M145/30; C10M145/40; C10M149/06; C10M149/10; C10N10/02; C10N10/12; C10N20/00; C10N30/06; C10N30/08; C10N40/24

JPS52112057A	1977-09-20
JPH08311468A	1996-11-26
JPH0312498A	1991-01-21
JPH08165489A	1996-06-25
JPS5773089A	1982-05-07
JPH06234989A	1994-08-23
JPH06184586A	1994-07-05
JPH05271682A	1993-10-19

Yuji Iwahashi

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