Patent · US Active

Method for hardening the surfaces of work pieces made of stainless steel, and a molten salt bath for realizing the method

US8083866B2 · kind B2 · utility

1Cited by

4References

11Claims

0Family size

Assignee

Durferrit GmbH · DE

Inventors

Ulrich Baudis · Hanau, DE
Michael Merz · Grabs, CH

Key dates

Filing date	Oct 31, 2008
Grant date	Dec 27, 2011
Priority date	—
Expiry date	Mar 18, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21D2211/001
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A method for hardening the surfaces of work pieces made from stainless steel includes submerging the work pieces into a molten salt bath having the composition: potassium acetate 60-100 weight %; sodium acetate 0-100 weight %; metal salt 0-2 weight %, and are subjecting the work pieces to the molten salt bath for a period of 24 to 240 hours, during which the temperature of the molten salt bath is maintained less than 400° C.

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