B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
22/108, 22/185
B22C 9/02 (2006.01) B22C 9/06 (2006.01) B22C 9/12 (2006.01) B22D 25/02 (2006.01)
Patent
CA 1264918
METHOD AND MOLD FOR SAND CASTING VARYING THICKNESS ARTICLES ABSTRACT OF THE DISCLOSURE A permanent casting mold has its casting cavity coated with a sand liner of varying thickness. The liner is thicker where the cast article section is thinner and the liner is thinner where the cast article section is thicker so as to permit the thicker sections to cool faster while the thinner sections cool slower. The different thicknesses of the liner are correlated so that the respective sections of the article are sufficiently cooled at about the same time for removal of the article from the mold. The mold is a cope and drag-type flask mold whose casting cavity halves are oversized relative to the cast article. The said liner is formed therein by temporarily positioning a pattern within the permanent casting cavity halves and sand filling the space between the pattern and cavity wall. The exterior surface of the pattern corresponds to the cast surface of the article. Thus, the thicknesses of the different portions of the liner are determined by the amount that the corresponding portions of the casting cavity are oversized. A vacuum system opening into the casting cavity, when the cope and drag are closed together for casting, enables rapid filling of the sand-lined cavity with molten metal, wherein the entire casting process, including cooling of the cast article for removal, is performed rapidly.
535720
Ridout & Maybee Llp
Witt Raymond H.
LandOfFree
Method and mold for sand casting varying thickness articles 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 and mold for sand casting varying thickness articles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and mold for sand casting varying thickness articles will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1262625