Metal founding – Process – Shaping liquid metal against a forming surface
Reexamination Certificate
2006-12-05
2006-12-05
Kerns, Kevin (Department: 1725)
Metal founding
Process
Shaping liquid metal against a forming surface
C164S268000, C164S072000, C508S154000, C106S038240
Reexamination Certificate
active
07143812
ABSTRACT:
In a lubricant composition suitable for use in the manufacture of aluminum alloys comprising lubricant base selected from the group consisting of solid lubricants, liquid lubricants, grease lubricants, emulsion lubricants, and dispersion lubricants, the improvement wherein the lubricant composition further comprises: an effective amount of water and surfactant or water and a compound comprising phosphates, borates, fluorides, and silicates. It is believed that mixing oil with water and surfactant or one of these compounds provides a method for uniformly distributing the surface oxide at the meniscus for casting applications, thereby reducing vertical fold formation that lead to cracks in aluminum ingots. In addition, the mixture promotes uniform heat transfer around the mold allowing the solidifying aluminum alloy to stay in contact with the mold longer and form stronger ingot shells. A process for continuous or semi-continuous casting of aluminum alloys via the use of this lubricant composition is also disclosed.
REFERENCES:
patent: 4336147 (1982-06-01), Stayner
patent: 4775418 (1988-10-01), Laemmle et al.
patent: 6269862 (2001-08-01), Richards et al.
patent: 6334978 (2002-01-01), DeYoung et al.
patent: 6412164 (2002-07-01), DeYoung et al.
patent: 6725904 (2004-04-01), Desrosiers et al.
patent: 2000015419 (2000-01-01), None
Anglin James R.
Bahaychick John
Ferrazzoli Thomas A.
Stewart Patricia A.
Wieserman Larry F.
Alcoa Inc.
Greenberg & Traurig, LLP
Hild, Jr. Harry A.
Kerns Kevin
Lin Ing-Hour
LandOfFree
Lubricant for improved surface quality of cast aluminum and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lubricant for improved surface quality of cast aluminum and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lubricant for improved surface quality of cast aluminum and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3720482