Foundry mold or core compositions and method

Details Foundry mold or core compositions and method Foundry mold or core compositions and method

1976-03-24

1979-07-24

Hayes, Lorenzo B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106 3835, 106 388, 106 84, 164 43, 260 285AS, 260 4211, 260 4213, C08L 3104, B28B 734

Patent

active

041622383

ABSTRACT:
Compositions and method for producing foundry sand cores or molds of initial high strength but with essentially no strength after casting metals above 700.degree. C. which involves shaping and setting a composition containing foundry sand and a binder comprising sodium, potassium, or lithium silicate and sufficient amorphous silica so that the fraction of the total silica in the binder solution which is present as amorphous silica is from 2 to 75%, the amorphous silica having a particle size in the range from about 2 nanometers to 500 nanometers and the binder having a molar ratio of silica to alkali metal oxide ranging from 3.5:1 to 10.1.

REFERENCES:
patent: 2701902 (1955-02-01), Strachan
patent: 2842444 (1958-07-01), Emblem
patent: 2975494 (1961-03-01), Cooper
patent: 3492137 (1970-01-01), Iler
patent: 3642503 (1972-02-01), Beaney
patent: 3690822 (1972-09-01), Meyers
patent: 3712941 (1973-01-01), Myers
patent: 3752680 (1973-08-01), Moore
patent: 3920578 (1975-11-01), Yates

Affiliated with

Also associated with

Rating

Foundry mold or core compositions and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Foundry mold or core compositions and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Foundry mold or core compositions and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1287327