Process for improving the surfaces of roller bodies and balls

Details Process for improving the surfaces of roller bodies and balls Process for improving the surfaces of roller bodies and balls

1976-10-14

1978-08-22

Smith, Ronald H.

Metal treatment

Compositions

Heat treating

148 615Z, 308241, 427290, 427327, 427334, 427417, C23F 710

Patent

active

041086899

ABSTRACT:
The surfaces of antifriction elements and other steel surfaces in mutual sliding contact are improved by first degreasing the surfaces in a mild alkaline aqueous degreasing bath at a pH of about 7 to 10, by then rinsing with cold water, by browning the surfaces in a saturated aqueous solution of a selected salt material at temperatures of from 128.degree. to 135.degree. C.

REFERENCES:
patent: 2217586 (1940-10-01), Zapf
patent: 3507677 (1970-04-01), Maynard
patent: 3515599 (1970-06-01), Connelly
patent: 3562023 (1971-02-01), Courier
patent: 3664886 (1972-05-01), Pederson
German Industrial Standard (DIN 50 938), Dec. 1973.

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