Method of introducing liquid into small-diameter hole

Details Method of introducing liquid into small-diameter hole Method of introducing liquid into small-diameter hole

1991-04-25

1993-06-01

Morris, Theodore

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 26, 134 30, 134 31, 134 37, 427 96, 427 98, B08B 300

Patent

active

052155935

ABSTRACT:
A substrate having a small-diameter hole is taken from the air and placed in a boiling vapor and/or boiling liquid in a first treatment tank of a vessel having a boiling heater, whereupon the pressure of the air in the small-diameter hole exceeds atmospheric pressure by an amount equivalent to the partial pressure of the air in the hole. Accordingly, the air cannot remain in the hole but is instead expelled to the outside. As a result, the interior of the microhole is replaced entirely by the boiling vapor and/or boiling liquid. Next, without being brought into contact with the external air, the substrate is contacted with a non-boiling liquid inside a second treatment tank, thereby preventing external gas from flowing back into the small-diameter. The non-boiling liquid and the boiling vapor and/or boiling liquid are soluble in each other. As a result, the two are unified and introduced to the small-diameter hole in the form of a liquid.

REFERENCES:
patent: 3028267 (1962-04-01), Edhofer et al.
patent: 3229702 (1966-01-01), Murdoch, Jr.
patent: 3329528 (1967-07-01), Aldrich et al.
patent: 4155775 (1979-05-01), Alpaugh et al.
patent: 4486239 (1984-12-01), du Fresne
patent: 4781943 (1988-11-01), Toba et al.
patent: 5032427 (1991-07-01), Kukanskis et al.
patent: 5045353 (1991-09-01), Takeda et al.

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