Method of manufacturing shell cores and molds using a gassing ca

Details Method of manufacturing shell cores and molds using a gassing ca Method of manufacturing shell cores and molds using a gassing ca

1976-12-27

1978-03-21

Husar, Francis S.

Metal founding

Process

Shaping a forming surface

164410, B22C 912

Patent

active

040797732

ABSTRACT:
A "cold box" process is disclosed in which a "green strength" sand binder mass is removed from a pattern, and placed under a canopy for gassing. The binder-curing gas catalyst is then introduced into the void space between the sand mass and the canopy until it penetrates the exposed surfaces of the sand-binder mass effecting a cure. Control of depth of penetration of the gas catalyst, and therefore, control of the thickness of the shell cured, is achieved by control of pre- and post-gassing pressures. The residual pre-gassing interstitial inert gas (usually air) is utilized as the internal "cushion" which limits the penetration of the advancing catalyst gas.

REFERENCES:
patent: 3145438 (1964-08-01), Kottke et al.
patent: 3795726 (1974-03-01), Zifferer et al.
patent: 3888293 (1975-06-01), Laforet et al.

Affiliated with

Also associated with

Rating

Method of manufacturing shell cores and molds using a gassing ca does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of manufacturing shell cores and molds using a gassing ca, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing shell cores and molds using a gassing ca will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-566065