Patent · US Active

Process for carbonitriding metallic components

US10280500B2 · kind B2 · utility

0Cited by

2References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Jochen Schwarzer · Ludwigsburg, DE
Laszlo Hagymasi · Gerlingen, DE
Thomas Waldenmaier · Freiberg am Neckar, DE

Key dates

Filing date	Apr 6, 2011
Grant date	May 7, 2019
Priority date	—
Expiry date	Sep 15, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C8/30
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

In a process for carbonitriding metallic components (1), provision is made of at least one carburization phase (C1, C2), in which the metallic component (1) is carburized with a carbon-donating gas. In addition, provision is made of a nitriding phase (C1, C2, C3), which is assigned to the carburization phase (D1, D2) and precedes the carburization phase (D1, D2). Here, in the nitriding phase, the metallic component (1) is nitrided by means of a nitrogen-donating gas at least superficially at at least one surface region (4) of the metallic component (1). It is thereby possible to avoid an excessive concentration of carbon, and therefore component failure is prevented and it is possible to dispense with costly remachining steps, e.g. grinding.

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