Method and device for the production of casting molds out of san

Details Method and device for the production of casting molds out of san Method and device for the production of casting molds out of san

1977-11-28

1980-01-08

Baldwin, Robert D.

Metal founding

Process

Shaping a forming surface

164 40, 164160, 164200, 164 38, 164195, B22D 1522

Patent

active

041823958

ABSTRACT:
Casting molds from binder-containing molding sand manufactured by improved vacuum injection, achieved by employing an injection grate with injection slots of a minimum width of at least 50 mm, a filterless connection between the mold container, the vacuum container and a vacuum container having a volume at least 20 times the volume of the mold container, evacuation of the vacuum container by a liquid seal pump and a venturi pipe effect in the sand chamber prior to injection of the sand.

REFERENCES:
patent: 1524922 (1925-05-01), Formaneck
patent: 2079802 (1937-05-01), Hauk
patent: 2511089 (1950-06-01), Zahner
patent: 2642206 (1953-06-01), Reed
patent: 2933785 (1960-04-01), Hansberg
patent: 3260285 (1966-07-01), Vogt
patent: 3290733 (1966-12-01), Miller
patent: 3556196 (1971-01-01), Buhler
patent: 3807483 (1974-04-01), Buhler
patent: 4016994 (1977-04-01), Wurster

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