Method of eliminating shrinkage porosity defects in the formatio

Details Method of eliminating shrinkage porosity defects in the formatio Method of eliminating shrinkage porosity defects in the formatio

1992-07-29

1993-08-10

Rosenbaum, Mark

Metal founding

Process

Shaping liquid metal against a forming surface

164365, B22D 1500

Patent

active

052340465

ABSTRACT:
A method of eliminating solidification shrinkage porosity defects in cast metal articles includes disposing an expanded polystyrene chill (36) within a preformed mold cavity (26) and thereafter introducing molten metal into the cavity (26) and vaporizing the chill member (36), whereby the heat of vaporization rapidly cools a localized region of the molten metal adjacent the chill member and accelerates solidification thereof enabling remote still-molten metal to feed solidification shrinkage in this region and prevent the formation of porosity defects that would otherwise result.

REFERENCES:
patent: 2294170 (1942-08-01), Francis et al.
patent: 2750641 (1956-06-01), Raible
patent: 3204303 (1965-09-01), Chandley
patent: 4690196 (1987-09-01), Vernay
patent: 4691754 (1987-09-01), Trumbauer et al.
patent: 4706732 (1987-11-01), Ruhlandt et al.
patent: 4742863 (1988-05-01), Witt

Affiliated with

Also associated with

Rating

Method of eliminating shrinkage porosity defects in the formatio 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 eliminating shrinkage porosity defects in the formatio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of eliminating shrinkage porosity defects in the formatio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1719450