Foundry facing sand composition

Details Foundry facing sand composition Foundry facing sand composition

1974-04-10

1976-06-08

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 3824, 106 385R, 106 37, 164 33, 427134, B28B 736

Patent

active

039619672

ABSTRACT:
An improved foundry facing sand is disclosed. The foundry facing sand comprises silica sand admixed therewith, in percent by weight of the silica sand, from about 0.8 to about 2 percent of a cellulose binder, from about 2 to about 6 percent of foundry clay, from about 3.5 to about 7 percent water, from about 1 to about 2.2 percent core oil, from about 0.3 to about 0.5 percent of a release agent-lubricant, and from about 0 to about 20 percent silica flour. The use of such foundry facing sand in green sand molds improves the quality and finish of finished castings and also does not detrimentally affect the permeability of system sand.

REFERENCES:
patent: 2507082 (1950-05-01), Allison
patent: 2687966 (1954-08-01), Miner et al.
patent: 2828214 (1958-03-01), Myers et al.
patent: 3027265 (1962-03-01), Miericke
patent: 3535131 (1970-10-01), Meier
patent: 3723368 (1973-03-01), Brown et al.

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