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Title:
METHOD FOR FORMING ROLLED THREAD
Document Type and Number:
Japanese Patent JP2009050899
Kind Code:
A
Abstract:

To provide a method for forming a rolled thread which can produce a screw having a small dent at a thread peak without depending on a special rotation number by using non-chlorine lubricant having good lubricity.

Rolling is carried out at the rotation number within 100 to 300 rpm by using the non chlorine lubricant including a basic oil A and basic calcium sulfonate B in an amount of more than 0 to less than 1.5 wt.%, or at the rotation number of equal to or more than 180 rpm by using the basic oil A and the basic calcium sulfonate B in an amount of 2.0 to 2.5 wt.%.


Inventors:
KATO ASAMI
ABE SATOSHI
HATTORI YASUHIRO
Application Number:
JP2007221012A
Publication Date:
March 12, 2009
Filing Date:
August 28, 2007
Export Citation:
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Assignee:
TOYOTA BOSHOKU CORP
YUSHIRO CHEM IND
International Classes:
B21H3/08; C10M101/02; C10M105/06; C10M107/02; C10M107/34; C10M107/50; C10M159/24; C10M169/04; C10N10/04; C10N30/00; C10N30/06; C10N40/00
Domestic Patent References:
JPS5742797A1982-03-10
JP2000073083A2000-03-07
JP2003213284A2003-07-30
JPS5742797A1982-03-10
JP2000073083A2000-03-07
JP2003213284A2003-07-30
JP2001225138A2001-08-21
JP2005290163A2005-10-20
Attorney, Agent or Firm:
Okada International Patent Office