Title:
LUBRICANT FOR INJECTION SLEEVE USED IN DIE CASTING
Document Type and Number:
Japanese Patent JP3604707
Kind Code:
B2
Abstract:
PURPOSE: To reduce the amt. of reaction gas generated on supplying a molten metal into an injection sleeve while maintaining lubricity not inferior to that of a conventional lubricant by adding a small amt. of a fine silicone powder to a powder mixture comprising a thermal insulating powder as the major component and a lubricating powder as the minor component.
CONSTITUTION: A thermal insulating powder prevents a molten metal supplied into an injection sleeve from getting into contact with the inner surface of the sleeve, examples being Al2O3, TiO2, SiO2, talc, and spinel. A lubricating powder improves the lubrication between the inner surface of the sleeve and the outer surface of a plunger chip and is used in an amt. of 16wt.% or lower of the total amt., and a self-lubricating powder such as stearic acid or a stearate can be used as the lubricating powder. A fine silicone power supplements the lubricity of the lubricating powder, pref. comprises spherical particles with particle sizes of 0.3-20μm, and is used in an amt. of 6wt.% or lower of the total amt.
Inventors:
Swappon Kumar Boju
Application Number:
JP21055193A
Publication Date:
December 22, 2004
Filing Date:
August 25, 1993
Export Citation:
Assignee:
Ahresty Co., Ltd.
International Classes:
C10M169/04; B22D17/20; C10N10/04; C10N10/08; C10N20/06; C10N40/20; C10N50/08; (IPC1-7): C10M169/04; B22D17/20
Domestic Patent References:
| JP4236300A | ||||
| JP6397693A |
Attorney, Agent or Firm:
Sadayuki Hosoi
Mitsuo Chonan
Ishiwatari Eibo
Mitsuo Chonan
Ishiwatari Eibo