Patent · US Active

Method for producing a fracture-divided component, and component produced according to the method

US8956049B2 · kind B2 · utility

0Cited by

4References

23Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Clemens Luchner · Teupitz, DE
Marc Kronenberg · Munich, DE
Rolf Koring · Frechen, DE
Ralf Kowollik · Berlin, DE

Key dates

Filing date	Sep 4, 2012
Grant date	Feb 17, 2015
Priority date	—
Expiry date	Sep 4, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/216
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A method for producing a fracture-divided component, in particular a connecting rod, with an at least partially coated bore includes the steps of: providing an unfinished component; applying a coating of a bearing material to a bore surface; and working the coating, in order to compensate internal tensile stresses in the coating, before fracture division of the component. Alternatively, the method for producing a fracture-divided component, in particular a connecting rod, having an at least partially coated bore includes the steps of: providing an unfinished component; applying a coating of a bearing material to a bore surface before fracture division of the component; and forming a counter-hardness zone before the application of the coating in order to generate compressive stresses which oppose the internal tensile stresses of the coating.

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