Patent · US Active

Method for carburizing workpieces and its application

US8828150B2 · kind B2 · utility

1Cited by

3References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Lothar Foerster · Stuttgart, DE
Jochen Schwarzer · Ludwigsburg, DE
Thomas Waldenmaier · Freiberg am Neckar, DE

Key dates

Filing date	Sep 15, 2008
Grant date	Sep 9, 2014
Priority date	—
Expiry date	Sep 27, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/9038
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A method for carburizing workpieces made of steel, particularly workpieces having outer and inner surfaces, the workpiece being held at a temperature in the range of 850 to 1050° C. in an atmosphere containing a gaseous hydrocarbon. At least two different gaseous hydrocarbons are used and/or the workpiece is alternatingly held in the atmosphere containing the gaseous hydrocarbon during a carburizing pulse and in an atmosphere free of hydrocarbon during a diffusion phase. Also described is a use of the method.

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