Hot stretch-wrap forming with resistance heating

Details Hot stretch-wrap forming with resistance heating Hot stretch-wrap forming with resistance heating

1975-10-20

1977-03-08

Reynolds, Bruce A.

Electric heating

Metal heating

With forging or shaping

72297, 72342, 219151, B21J 1308, H05B 326

Patent

active

040114295

ABSTRACT:
Stretch-wrap forming of titanium parts or the like by resistance heating the part and a steel forming element which is cast into a fused silica die insert. Heating is accomplished by an electrical circuit in which both the part and the element are connected in parallel. The part is stretch wrapped over the element while a low voltage, high amperage current is allowed to flow through both the part and the element.

REFERENCES:
patent: 1112779 (1914-10-01), Forsyth
patent: 1251578 (1918-01-01), Riecken
patent: 2905225 (1959-09-01), Lalli
patent: 2952767 (1960-09-01), Maloney
patent: 3021887 (1962-02-01), Maynard
patent: 3933020 (1976-01-01), Orr et al.

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