Reusable ceramic mold

Details Reusable ceramic mold Reusable ceramic mold

1989-01-19

1990-07-03

Seidel, Richard K.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 382, 164529, 164364, B22C 100

Patent

active

049388029

ABSTRACT:
A metal casting mold formed of a ceramic material. The mold is reusable and is formed of a crystalline ceramic whose coefficient of thermal expansion (in the range 0.degree. to 1000.degree. C.) is between about 0 and 15.times.10.sup.-7 /.degree.C./ The mold interior surface includes at least one projection extending towards the mold cavity. The projection is provided with a release (draft) angle of about 6.degree., tapering away from the base of the projection. Upon pouring, the molten metal surrounds at least a portion of the projection. Upon cooling within the mold, shrinkage of the metal casting against the tapered sides of the projection forces the casting along the projection, toward the latter's tapered end and away from the mold interior surface and thus partially out of the mold cavity. A method of making the ceramic mold of this invention is also disclosed.

REFERENCES:
patent: 2368718 (1945-02-01), Miller
patent: 3508601 (1970-04-01), McArdle
patent: 3598732 (1971-08-01), Foster et al.
patent: 3720397 (1973-03-01), Voegele
patent: 4008748 (1977-02-01), Gunnergaard
patent: 4244551 (1981-07-01), Terkelsen et al.
patent: 4411305 (1983-10-01), Beetle
patent: 4757857 (1988-07-01), Henkel

Affiliated with

Also associated with

Rating

Reusable ceramic mold does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1888499