Method of prestressing the working surfaces of pressure chambers

Details Method of prestressing the working surfaces of pressure chambers Method of prestressing the working surfaces of pressure chambers

1980-10-27

1982-10-19

Crosby, Gene

Metal deforming

By shot-blasting

72 61, C21D 706

Patent

active

043543715

ABSTRACT:
A method of prestressing the working surface of pressure chambers or cylinders comprising the steps of first shot peening their working surfaces to form compressive residual stresses, and then applying fluid pressure at a predetermined magnitude to cause tensile stresses in the working surfaces. The magnitude of compressive residual stresses established on their outer working surfaces is made substantially equal to the tensile stress applied to these surfaces during the pressure phase of the process.

REFERENCES:
patent: 454592 (1891-06-01), Jackson
patent: 3485073 (1969-12-01), Burney
patent: 4034585 (1977-07-01), Straub
patent: 4214923 (1980-07-01), Price
patent: 4230426 (1980-10-01), Avery

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