Method of treating metal working dies

Details Method of treating metal working dies Method of treating metal working dies

1997-07-07

1998-12-29

Wyszomierski, George

Metal treatment

Process of modifying or maintaining internal physical...

Treating consolidated metal powder, per se

761071, 427435, B23P 1524

Patent

active

058535063

ABSTRACT:
A method of treating metal working dies by the steps of: forming a metal working die part to be constituted of consolidated particulate material with a porosity in the range of 0.01-0.5%; immersing the part in a lubricant that is flowable under the working conditions of use for the die part, the lubricant being contained within a pressure chamber; raising the pressure within the chamber to 3,500 psi and the temperature of the lubricant to about 100.degree. C. for a period of time sufficient to allow the lubricant to migrate and be trapped within the micro pores of the part with a positive internal pressure; and placing into use the treated cold working die part so that such die part is subjected to shear, such use being without the need for burn in and redressing.

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patent: 4204031 (1980-05-01), Takemura et al.
patent: 5292022 (1994-03-01), Blanco
patent: 5368757 (1994-11-01), King

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