Metal founding – Process – Shaping liquid metal against a forming surface
Reexamination Certificate
2006-09-26
2006-09-26
Kerns, Kevin (Department: 1725)
Metal founding
Process
Shaping liquid metal against a forming surface
C164S268000, C164S072000, C508S154000, C106S038240
Reexamination Certificate
active
07111665
ABSTRACT:
In a lubricant composition suitable for use in the manufacture of aluminum alloys comprising a lubricant base, the improvement wherein the lubricant composition further comprises: an effective amount of water, surfactant, and a high viscosity organic material having a low vapor pressure. It is believed that this mixture provides a method for uniformly distributing the surface oxide at the meniscus for casting applications and increasing meniscus stability. Uniform distribution of the oxide and increased stability at the meniscus reduces vertical fold formation that can lead to cracks in the aluminum ingot. In addition, the mixture promotes uniform heat transfer around the mold. Uniform heat transfer around the mold allows 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.
Hart Jim M.
Reynolds Brian C.
Richter Ray T.
Stewart Patricia A.
Alcon Inc.
Greenberg & Traurig, LLP
Hild, Jr. Harry A.
Kerns Kevin
Lin I.-H.
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-3553605