Method and device for forming tubes

Details Method and device for forming tubes Method and device for forming tubes

1974-12-12

1976-04-20

Lanham, C. W.

Metal deforming

By deflecting successively-presented portions of work during...

With modification or control of temperature or work, tool or...

72342, 72370, 72418, B21D 3716, B21D 4102

Patent

active

039509761

ABSTRACT:
A mandrel mounted on a support and corresponding to the configuration of the tube to be formed is surrounded by an inductor placed at a distance which permits displacement and expansion of the tube on the mandrel under the action of pressure application means. The inductor carries a medium-frequency current which is maintained at a constant value during the forming operation in order to permit controlled annealing and plastic deformation of the tube.

REFERENCES:
patent: 2461323 (1949-02-01), Hille
patent: 3161756 (1964-12-01), Haverkamp
patent: 3354695 (1967-11-01), Szente
patent: 3360826 (1968-01-01), Lorang
patent: 3806301 (1974-04-01), Osterhagen
patent: 3834199 (1974-09-01), Rouyer

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