Method of preventing distortion of a heated workpiece during coo

Details Method of preventing distortion of a heated workpiece during coo Method of preventing distortion of a heated workpiece during coo

1983-03-07

1984-04-24

Skiff, Peter K.

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

266117, 269 481, C21D 908

Patent

active

044446047

ABSTRACT:
A method is provided for preventing distortion of a heated cylindrical metal workpiece during cooling. The method includes heating the workpiece and then placing a fixture substantially at room temperature in the workpiece. The fixture has a plurality of axially-spaced holder plates with shoe members slidably mounted at spaced locations on the plates. A plurality of tapered pin assemblies are used to secure each shoe member in fixed position initially so as to define the desired cold shape of the workpiece. The workpiece is then cooled with the fixture in place. After cooling of the workpiece, the tapered pin assemblies are partially withdrawn from tapered holes in the shoe members and holder plates so as to permit removal of the fixture from the workpiece.

REFERENCES:
patent: 3649036 (1972-03-01), Harz
patent: 3932238 (1976-01-01), Safford
patent: 4240616 (1980-12-01), Takahashi et al.
patent: 4387845 (1983-06-01), Mefferd

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