Vacuum bonded dry sand cores

Details Vacuum bonded dry sand cores Vacuum bonded dry sand cores

B - Operations, Transporting

22

C

22/159

B22C 13/12 (2006.01) B22C 9/03 (2006.01) B22C 9/10 (2006.01) B29C 33/38 (2006.01)

Patent

CA 1050727

VACUUM BONDED DRY SAND CORES ABSTRACT OF THE DISCLOSURE A method for preparing sand cored parts is disclosed which is applicable to certain types of molding techniques where the mold cavity is at least slightly porous, such as shell molding, green sand molding, and most importantly, the cavityless method of molding. An impervious ply of highly formable con- sumable material, such as polyethylene plastic, is inserted or injected by blow molding to form an envelope conforming to the shape of the core box cavity. Unbonded sand is injected into the interior of the plastic ply to totally fill the same while being vibrated; the plastic envelope is then evacuated of air and sealed off to form a discrete package. The sand core, so packaged, is then removed from the core box and positioned within a molding cavity such as the cavity that might be formed in a consumable foam pattern or assembly whereby the complete cycle of casting may be carried out.

221452

Affiliated with

Also associated with

Rating

Vacuum bonded dry sand cores does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vacuum bonded dry sand cores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum bonded dry sand cores will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-966315