Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1990-11-15
1993-02-23
Roy, Upendra
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148594, 148654, 72324, 72370, 761011, 76109, 294001, 29891, 37142R, C21D 800, C21D 810
Patent
active
051886804
ABSTRACT:
A method of making a tooth point and product wherein a tubular blank of alloy steel is heated, shaped at one end to provide a box section and shaped at the other end to provide a blade made up of two layers of steel forged together.
REFERENCES:
patent: 4577423 (1986-03-01), Hahn
Roads and Streets, Sep., 1958.
Hahn Frederick C.
Huiras James W.
Ulven Andrew H.
ESCO Corporation
Ip Sikyin
Roy Upendra
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