Method for impregnating a die-cast article with a sealant and an

Details Method for impregnating a die-cast article with a sealant and an Method for impregnating a die-cast article with a sealant and an

1983-12-20

1985-05-28

Lusignan, Michael R.

Coating processes

Vacuum utilized prior to or during coating

118 50, 427295, B05D 300, C23C 1308

Patent

active

045200459

ABSTRACT:
In a conventional method of impregnating die-cast articles, the sealing property is not excellent due to air being dragged into the sealant.
In the present invention, the dragging of air into the sealant is prevented by adjusting the pressure of the sealant storage vessel and the pressure of the impregnation vessel to substantially the same level and then flowing the sealant from the sealant storage vessel into the impregnation vessel. After impregnation, the sealant reenters the sealant storage vessel, and pressure is applied to the die-cast articles so as to remove excessive sealant from them.

REFERENCES:
patent: 4311735 (1982-01-01), Young
patent: 4384014 (1983-05-01), Young

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