Sand molding apparatus with means for recirculating catalyst

Details Sand molding apparatus with means for recirculating catalyst Sand molding apparatus with means for recirculating catalyst

1976-05-17

1977-12-27

Baldwin, Robert D.

Metal founding

Control means responsive to or actuated by means sensing or...

Responsive to thermal condition

164 12, 164157, 164160, B22C 912

Patent

active

040649261

ABSTRACT:
Particulate material, hereinafter called sand, is used in a sand article, such as a mold article, for foundry purposes such as a green sand mold and sand core consisting of sand and a binder and is hardened in a molding box by sucking a catalyst gas from a catalyst gas source through the molding box and the sand article. The molding box is continuously exposed to the action of a reduced pressure source and normally evacuated to the atmosphere. When the pressure has been reduced to a predetermined pressure less than atmospheric pressure, the catalyst gas is briefly supplied to the molding box under slight increase of the absolute pressure, whereupon the molding box is evacuated to the catalyst gas source until the pressure therein is reduced to the predetermined pressure to recycle the unused catalyst gas leaving the molding box to the catalyst gas source.

REFERENCES:
patent: 3919162 (1975-11-01), Austin

Affiliated with

Also associated with

Rating

Sand molding apparatus with means for recirculating catalyst does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sand molding apparatus with means for recirculating catalyst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sand molding apparatus with means for recirculating catalyst will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1033962