Metal founding – Process – Shaping a forming surface
Patent
1989-04-14
1990-10-30
Lin, Kuang Y.
Metal founding
Process
Shaping a forming surface
164 35, B22C 904
Patent
active
049662201
ABSTRACT:
A method of casting utilizing an evaporable foam system with a hypereutectic aluminum silicon alloy. The molten alloy is introduced into a mold in contact with an evaporable foam pattern formed of polystyrene, or the like. The heat of the molten alloy will decompose and vaporize the pattern and the vapor will enter the interstices of the surrounding sand, while the molten alloy will fill the void caused by the vaporization of the pattern. By casting the molten alloy into contact with the evaporable foam material, a more uniform distribution of primary silicon is obtained in the cast alloy and the heat of crystallization caused by precipitation of silicon crystals on solidification of the alloy will temporarily slow the solidification rate of the alloy, thus increasing the time for elimination of pattern residue vapors from the molten alloy.
REFERENCES:
patent: 1947121 (1937-02-01), Bonsack
patent: 2357452 (1944-09-01), Bonsack
patent: 3092744 (1963-06-01), Stonebrook
patent: 3726672 (1973-04-01), Lindberg et al.
patent: 3861447 (1975-01-01), Hoado
patent: 3863706 (1975-02-01), Chandley
patent: 3881879 (1975-05-01), Singelton, Jr.
patent: 3900064 (1975-08-01), Chandley et al.
patent: 4112997 (1978-09-01), Chandley
patent: 4297976 (1981-11-01), Bruni
patent: 4340108 (1982-07-01), Chandley et al.
patent: 4603665 (1986-08-01), Hesterberg et al.
patent: 4616689 (1986-10-01), Denis
patent: 4711288 (1987-12-01), Harvey
Alloy Digest, Reynolds 390 and A390, Aug. 1971.
Alloy Digest, Aluminum 392.0, Sep. 1970.
Ward's Engine Update, "Top Engine Designers Laud Sleeveless Alloy Use", May 1982.
"Engineering Control For High Volume 390 Die Casting", Ward.
"Aluminum Alloy with High Silicon Content", Stonebrook.
"Evaporative Foam Casting Technology II Program", 1986.
Cleary Terrance M.
Donahue Raymond J.
Hesterberg William G.
Brunswick Corporation
Lin Kuang Y.
LandOfFree
Evaporable foam casting system utilizing a hypereutectic aluminu does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Evaporable foam casting system utilizing a hypereutectic aluminu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evaporable foam casting system utilizing a hypereutectic aluminu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-270482