Ford Motor Company Limited

Indugas, Inc.

Claude Melvin Mack

Charles A Stickels

Klaus H Hemsath

Rodney G Whitbeck

Mark G Shapona

Ronald Scott Lucas

Eugene Joseph Cabadas

Gary Wayne Hagler

Arvind Chhotalal Thekdi

A thermal treating apparatus and process providing convection thermal transfer for elevated processing temperatures and chemical treatment. A recirculation plenum for passage of spent treatment fluid from and fresh treatment fluid to a treatment chamber may contain a thermal control source, a chemical control source, and a blower to provide predetermined programmable temperatures and chemical environments to articles in the treatment chamber. Decreasing cross sectional areas along the length of the treatment chamber cause introduction of fresh treatment fluid at different locations along the length of the treatment chamber to achieve desired uniform thermal and chemical treatment of articles along the length of the treatment chamber.

Thermal treating apparatus and process

A method of applying a surface coating to promote gas carburization of a highly alloyed steel. The method includes the step of coating the highly alloyed steel with a layer of iron or an iron alloy to form a coated steel before carburizing the coated steel in a conventional gas carburizing atmosphere.

Coating method of gas carburizing highly alloyed steels

An alloy steel composition is disclosed which has characteristics of (a) enhanced resistance to hardness degradation under high temperatures and/or enhanced resistance to sliding wear and contact fatigue under conditions of poor lubrication, (b) ease of softening for formability and machinability, and (c) ease of heat treating for hardening with austenitizing (or carburizing) at a temperature of 950.degree.-960.degree. C. and tempering at a temperature at or below 600.degree. C. The composition comprises essentially, by weight, carbon--0.15-0.30%, Mo--2.0-3.5%, V--0-0.45%, Cr--0-0.75%, Mn--0.25-0.50%, Si--0.15-0.35%, and remainder Fe.

Formable, temperature-resistant martensitic steel having enhanced

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Ypsilanti, MI, United States of America

Claude Melvin Mack