Method and apparatus for providing air vents or holes in casting

Details Method and apparatus for providing air vents or holes in casting Method and apparatus for providing air vents or holes in casting

1978-06-15

1980-04-01

Baldwin, Robert D.

Metal founding

Process

Shaping a forming surface

164234, 164410, 408 56, B22C 2300

Patent

active

041956826

ABSTRACT:
A method for forming at least one air vent or hole in a casting mold made of molding said and having a top flask with at least one blind hole originating at its parting plane with a bottom flask comprises the steps of pressurizing the mold cavity and drilling the air vent or hole into communication with the blind hole while drawing off the materials produced by drilling directly at the drilling point. An apparatus for performing the above-noted method includes, according to a preferred embodiment, a source of compressed gas having a pressure hood mountable over the inlet of the mold, and a drilling tool disposed within a suction hood which is placed in a sealing engagement with the top flask after the drilling tool has been properly aligned with the blind hole that is to form part of the air vent or hole.

REFERENCES:
patent: 3033298 (1962-05-01), Johnson
patent: 3227010 (1966-01-01), Daubner et al.

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