Method of heat treating metal parts using a washable synthetic q

Details Method of heat treating metal parts using a washable synthetic q Method of heat treating metal parts using a washable synthetic q

1987-06-02

1989-05-02

Sheehan, John P.

Metal treatment

Compositions

Heat treating

148 206, 148 28, 148 29, C21D 148

Patent

active

048265454

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 soluble, while still providing an excellent approximation of the cooling curve characteristic of an oil quenchant.

REFERENCES:
patent: 3022205 (1962-02-01), Chase et al.
patent: 3902929 (1975-09-01), Meszaros
patent: 4087290 (1978-05-01), Kopietz et al.

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