Method of heat treating metal using a washable synthetic quencha

Details Method of heat treating metal using a washable synthetic quencha Method of heat treating metal using a washable synthetic quencha

1986-10-06

1988-04-19

Sheehan, John P.

Metal treatment

Compositions

Heat treating

148 206, 148 28, 148 29, C21D 148

Patent

active

047387319

ABSTRACT:
A method of quenching metal components utilizing a water based quenching composition which includes a polyvinylpyrrolidone polymer of high molecular weight and in relatively high concentrations and thereafter power washing the parts to remove the polymeric film. Another preferred embodiment uses the same high molecular weight polyvinylpyrrolidone in combination with two rust inhibiting agents which greatly extend the time during which the quenchant film left on the quenched parts remains water soluable, while still providing an excellent approximation of the cooling curve characteristic of an oil quenchant.

REFERENCES:
patent: 3902929 (1975-09-01), Meszaros
patent: 4087290 (1978-05-01), Kopietz et al.

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