Metal treatment – Compositions – Heat treating
Patent
1987-08-03
1989-05-02
Brody, Christopher W.
Metal treatment
Compositions
Heat treating
148 12R, 148 12B, 148 121, C21D 800
Patent
active
048265420
ABSTRACT:
A method and apparatus for determining the critical temperature at which Bainite is formed from a low carbon steel, and for forming a steel material with a predetermined percentage of Bainite. The temperature of low carbon steel is raised to a temperature above the critical temperature at which Bainite is formed. The temperature is then raised to the critical temperature and maintained at that level until a predetermined percent of the steel microstructure has changed to Bainite.
A novel chain pump is disclosed for maintaining the steel at a selected temperature plateau.
REFERENCES:
patent: 3964938 (1976-06-01), Tolliver et al.
Making, Shaping & Treating of Steel, 9th ed., .COPYRGT.1971, pp. 607-609, 1086, 1089, 1091, 1100-1103.
Brody Christopher W.
Chandle Charles W.
U.S. Automation Co.
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