Method of shaping sheet metal of inferior formability

Details Method of shaping sheet metal of inferior formability Method of shaping sheet metal of inferior formability

1975-07-11

1976-09-14

DiPalma, Victor A.

Metal working

Method of mechanical manufacture

Utilizing transitory attached element or associated separate...

291875, 29421R, 29DIG45, B23P 1700

Patent

active

039798151

ABSTRACT:
In regard to sheet metals of inferior formability as typified by titanium alloys, each end face of a blank is covered with a cover plate of a metal which surpasses the blank material in formability, and the covered blank is subjected to a usual shaping operation in which the steps of heating the blank and pressing the heated blank are cycled a plurality of times, so that the blank can be protected against contamination attributable to exposure of the hot blank to the atmosphere and hence saved from having a large margin in the thickness thereof. A lubricant layer is preferably formed between the blank and each cover plate for a further improvement on the formability.

REFERENCES:
patent: 3122423 (1964-02-01), Hessler
patent: 3135045 (1964-06-01), Schane
patent: 3263319 (1966-08-01), Tifft et al.
patent: 3373480 (1968-03-01), Fuchs, Jr.
patent: 3566661 (1971-03-01), McCafferty et al.

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