Metallurgical apparatus – Having means for contacting a solid metalliferous material... – With heating means – e.g. – flame contact
Patent
1976-06-04
1977-10-25
Lake, Roy
Metallurgical apparatus
Having means for contacting a solid metalliferous material...
With heating means, e.g., flame contact
266131, 134105, 134154, C21D 162
Patent
active
040553337
ABSTRACT:
A novel apparatus for automatically heat treating ferrous work rapidly from austenite stage temperature through the martensite state and automatically slowly cooling the same thereafter to impart uniform hardness and other desired characteristics thereto, eliminating risk of warpage, cracking, distortion and variations therein. The invention includes a work holder within which the work is positioned during the automatic heat treating procedures, the work holder being provided with an upstanding vertical perforated wall such that, on positioning the work holder and work, after being preheated in a furnace, into the quenching medium, the work will be automatically quenched and cooled through the rapidly cooling initial and subsequent slow cooling time and temperature stages, achieving uniform transformation and hardness of work having varying forms and thicknesses to the martensitic transformation stage.
REFERENCES:
patent: 2374535 (1945-04-01), Gibson
patent: 2862843 (1958-12-01), Engelhard
patent: 2975083 (1961-03-01), Engelhard
patent: 3229967 (1966-01-01), Engelhard
patent: 3415694 (1968-12-01), Engelhard
Bell Paul A.
Lake Roy
Owego Heat Treat, Inc.
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