Method of making a mold

Details Method of making a mold Method of making a mold

1976-05-21

1982-02-16

Hampilos, Gus T.

Metal founding

Process

Shaping a forming surface

164 23, 164 34, B22C 922, B22C 900

Patent

active

043155375

ABSTRACT:
An improved method is utilized to make a mold for a cast product having a plurality of spaced apart surfaces. Although the method could be used for forming molds for different products, the method is advantageously used to form a mold for a cast product having a plurality of airfoils disposed in a circular array. To form the mold, a plurality of airfoil pattern segments are placed in a circular array with surfaces of the segments abutting at joints which are free of material interconnecting the segments. A coating of liquid ceramic mold material is applied over the airfoil pattern segments. Since the joints between the airfoil pattern segments are free of interconnecting material, the liquid ceramic mold material can flow into the joints. After the ceramic mold material has been dried and the airfoil pattern segments disposed of, the ceramic mold material which entered the joints between the airfoil pattern segments forms a plurality of relatively thin projections from the main wall of the mold. These thin projections are broken away before the product is cast in the mold. During the application of the ceramic coating to the airfoil pattern segments, the relatively flexible wax airfoil pattern segments are advantageously supported by a relatively rigid annular pattern member which is disposed outwardly of the airfoil segments.

REFERENCES:
patent: 3669177 (1972-06-01), Ingalls et al.
patent: 3848654 (1974-11-01), Boyle et al.

Affiliated with

Also associated with

Rating

Method of making a 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 Method of making a mold, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making a mold will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-939590