Title: Method of producing ferrous sintered alloy of improved wear resistance

Abstract: A method of producing a ferrous alloy material having improved wear resistance comprising (1) mixing powders of a ferrous alloy, tungsten and optionally at least one element selected from the group consisting of C, Ni, Mn, Mo, Cr, and Cu, (2) sintering the mixture of powders of step (1) to form a sintered product, (3) infiltrating the sintered product of step (2) with molten copper or a copper alloy to produce an infiltrated sintered product and (4) cooling the infiltrated sintered product of step (3).

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Other info:

Inventors: Takahashi, Kentaro (Ohmiya, JP)
Urano, Shigeru (Ohmiya, JP)

Application Number: 771854
Filing Date: 1977-02-23
Publication_date: 1978-10-31
Assignee: Nippon Piston Ring Co., Ltd. (Tokyo, JP)
Primary Class(es): 419/27 428/567, 428/569
Other Classes:
US Patent Ref:

3414391	Dec, 1968	Brab	29/182.
3795961	Mar, 1974	Takahashi et al.	29/182.
3806325	Apr, 1974	Niimi et al.	29/182.
3827863	Aug, 1974	Takahashi et al.	29/182.
3856478	Dec, 1974	Iwata et al.	29/182.

Other Refs:
Primary Examiner: Padgett, Benjamin R.
Assistant Examiner: Barr, J. L.
Attorney: Sughrue, Rothwell, Mion, Zinn and Macpeak