Method for enhancing the wear performance and life characteristi

Details Method for enhancing the wear performance and life characteristi Method for enhancing the wear performance and life characteristi

1991-11-27

1993-03-16

Jones, David

Metal deforming

By shot-blasting

188218R, C21D 906

Patent

active

051933756

ABSTRACT:
A method for enhancing the frictional wear properties, performance and life of a graphitic cast iron brake drum. The surfaces of the drum which are frictionally engaged by brake shoes, are cold worked by subjecting them to shot peening at an intensity level sufficient to induce surface and near surface residual stress, to thereby increase the resistance of said graphitic cast iron to scuffing and heat checking under conditions of dry sliding contact and frictional loading.

REFERENCES:
patent: 2077639 (1937-04-01), Minich
patent: 4167864 (1979-09-01), Taipale
patent: 4581913 (1986-04-01), Reed
F. L. Main, "Brake Drum Metallurgy", Aug. 1932, S.A.E. Journal vol. 31-No. 2 pp. 330-338.

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