Mark M Svilar

US Patent:

47690712, Sep 6, 1988

Filed:

Aug 21, 1987

Appl. No.:

7/088078

Inventors:

Erhard Klar - Beachwood OH
Mark Svilar - University Heights OH

Assignee:

SCM Metal Products, Inc - Cleveland OH

International Classification:

B22F 300

US Classification:

75246

Abstract:

There is provided a process for infiltrating a compacted ferrous powder metal body with copper or a copper alloy which process is characterized by presintering the ferrous metal body at a temperature of from about 1875. degree. F. to a temperature below the melting point of the infiltrant, and then in the same furnace, raising the temperature above the melting point of the copper or copper alloy infiltrant for a period sufficient to infiltrate the powder metal body. This process is more economical than the prior double run infiltration processes and provides excellent impact strengths and tensile strengths.

US Patent:

49216651, May 1, 1990

Filed:

Mar 11, 1988

Appl. No.:

7/166879

Inventors:

Erhard Klar - Beachwood OH
Mark Svilar - Orange Village OH
David F. Berry - Westlake OH

Assignee:

SCM Metal Products, Inc. - Cleveland OH

International Classification:

C22F 100

US Classification:

419 23

Abstract:

The present invention relates to porous powder metal (P/M) parts having improved dynamic properties such as impact and fatigue strength. These properties are achieved by the use of finer metal powders.

US Patent:

49767780, Dec 11, 1990

Filed:

Jun 23, 1988

Appl. No.:

7/210579

Inventors:

David F. Berry - Westlake OH
Erhard Klar - Beachwood OH
Mark Svilar - Orange OH

Assignee:

SCM Metal Products, Inc. - Cleveland OH

International Classification:

B22F 100

US Classification:

75254

Abstract:

The present invention relates to an infiltrated ferrous powder metal part containing certain additives, yielding a part having improved dimensional control during infiltration and uniform and predictable distribution of dynamic properties within a given group of commonly manufactured parts.

US Patent:

46067680, Aug 19, 1986

Filed:

Jul 15, 1985

Appl. No.:

6/755282

Inventors:

Mark Svilar - University Heights OH
Stephen Glancy - Akron OH
Erhard Klar - Beachwood OH

Assignee:

SCM Corporation - New York NY

International Classification:

B22F 300

US Classification:

75246

Abstract:

A copper infiltrated ferrous powder metal part infiltrated with copper or a copper alloy characterized as having after infiltration a residual uninfiltrated porosity of less than about 7 volume percent and a maximum pore size of the residual uninfiltrated porosity of less than about 125 micrometers, said porosity and pore size values being taken from a worst field of view in a functionally critical area of said metal part.

US Patent:

48613738, Aug 29, 1989

Filed:

Mar 8, 1988

Appl. No.:

7/165587

Inventors:

Erhard Klar - Beachwood OH
Mark Svilar - Orange Village OH
David F. Berry - Westlake OH

Assignee:

SCM Metal Products, Inc. - Cleveland OH

International Classification:

C22C 2914

US Classification:

75244

Abstract:

The present invention relates to an infiltrated ferrous powder metal part containing certain additives, yielding a radically improved unnotched impact strength without sacrificing tensile strength. Fatigue strength is also improved. In addition, improved dimensional control is obtained during infiltration. The microstructure is also improved, with smoothing or rounding of the formerly sharp angled copper filled pores. The invention also comprises the method of achieving these results.