Metal working apparatus and methods of piercing

Details Metal working apparatus and methods of piercing Metal working apparatus and methods of piercing

1970-05-11

1976-06-15

Larson, Lowell A.

Metal deforming

By use of roller or roller-like tool-element

With tool inside hollow work

72370, 75122, 75171, B21B 1710

Patent

active

039628973

ABSTRACT:
A method and apparatus are provided for piercing metal members at high temperatures, particularly members containing slag inclusions, by the steps of urging said member, over a piercer point by rolling whereby said point passes through and forms an axial opening in the ingot, said point being formed of an alloy comprising 0.015% to 2% Carbon, about 5% to 65% Cobalt, about 15% to 35% Chromium and up to about 30% iron.

REFERENCES:
patent: 1903952 (1933-04-01), Wissler
patent: 2126750 (1938-08-01), De Golyer
patent: 2197098 (1940-04-01), Davis et al.
patent: 2263020 (1941-11-01), Trantin
patent: 2799003 (1957-07-01), Nowak
patent: 3237441 (1966-03-01), Eberle
P. 846, The Making, Shaping and Treating of Steel (1964).
P. 1388, Van Nostrand's Scientific Encyclopedia (1947).

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