Title:
熱間粉体潤滑剤組成物および継目無管の製造方法
Document Type and Number:
Japanese Patent JP4614459
Kind Code:
B2
Abstract:
With a powdered lubricant composition by the invention, in addition to the blending of one of anhydrous, pentahydrate or decahydrate salt in sodium borate and one of sodium or calcium salt of fat acid, mixing calcium or lithium carbonate as an auxiliary lubricant can prevent sodium borate (Na 2 B 4 O 7 ), solidified as amorphous after a tube-making process, from moisture absorbance, drying and crystallization to thereby suppress the formation of Na 2 B 4 O 7 · 5H 2 O on inside surfaces of finished-product tubes, thus enabling to circumvent occurrence of the white scales. Concurrently, they provide good diffusivity toward the working surface of workpiece, thus enabling to prolong a life of the mandrel bar and to widely be adopted as the most suitable powdered lubricant for manufacturing seamless tubes by Mandrel Mill rolling.
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Inventors:
Kenichi Shinoki
Junsei Iida
Mori Shizuo
Atsushi Ito
Junsei Iida
Mori Shizuo
Atsushi Ito
Application Number:
JP2006545205A
Publication Date:
January 19, 2011
Filing Date:
November 22, 2005
Export Citation:
Assignee:
SUMITOMO METAL INDUSTRIES,LTD.
Palace Chemical Co., Ltd.
Palace Chemical Co., Ltd.
International Classes:
C10M169/04; B21B25/04; C10M103/00; C10M103/06; C10M105/24; C10M125/10; C10M129/40; C10N10/02; C10N10/04; C10N30/06; C10N40/24; C10N50/08
Domestic Patent References:
| JP2002338984A | 2002-11-27 | |||
| JP2002338985A | 2002-11-27 | |||
| JP2000226591A | 2000-08-15 | |||
| JPH0841474A | 1996-02-13 | |||
| JPH10130687A | 1998-05-19 |
Attorney, Agent or Firm:
Michio Mori