Method for increasing the surface hardness of loom components ex

Details Method for increasing the surface hardness of loom components ex Method for increasing the surface hardness of loom components ex

1995-08-21

1997-08-19

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

148239, 148230, 148318, 139192, 428667, C23C 826, C23C 838

Patent

active

056583940

ABSTRACT:
Loom components such as reed dents or weft brake lamellae that, during operation, are exposed to frictional abrasion by a moving weft thread, are made of cold rolled strip steel or of refined nitrided steels. The components are then exposed to a heat treatment at a temperature larger than 480.degree. C. for a duration of more than two hours, preferably up to 8 hours. A thermo-chemical treatment is performed simultaneously with the heat treatment to harden at least those surface areas of the components that in operation will be exposed to the frictional abrasion.

REFERENCES:
patent: 5226975 (1993-07-01), Denton
German Industrial Standard (DIN) Handbook No. 155 "Quality Standards for Steel and Iron No. 2", 1985, pp. 119 and 120, published by Beuthverlag GmbH Berlin and Cologne, Second Edition (DIN 17 224).

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