Patent · US Active

Method of surface densification of a powder metal component

US7987569B2 · kind B2 · utility

1Cited by

15References

20Claims

0Family size

Assignee

GKN Sinter Metals, LLC · DE

Inventors

Terry M. Cadle · Wauwatosa, US
Joel H. Mandel · Hartford, US
Donald J. Phillips · Menomonee Falls, US

Key dates

Filing date	Oct 22, 2007
Grant date	Aug 2, 2011
Priority date	—
Expiry date	Feb 24, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/479
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A high performance main bearing cap has particular surfaces densified for improved fatigue crack resistance. The surfaces densified are the bolted face inside of a perimetral margin and outside of bolt head interface areas around the main bolt holes, the surfaces of the main bolt holes and the side bolt hole threads. Preferred methods of densification are single needle programmable pattern peening of the bolted face peened area, over-burnishing of the bolt holes, and forming the threads rather than cutting them for the side bolt threads.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.