Method of passivating commercial grades of aluminum alloys for u

Details Method of passivating commercial grades of aluminum alloys for u Method of passivating commercial grades of aluminum alloys for u

1998-04-09

2000-04-04

Ryan, Patrick

Metal founding

Process

Shaping liquid metal against a forming surface

164 47, 164463, 164 551, 164 571, B22D 2700

Patent

active

060448970

ABSTRACT:
A process for increasing the productivity of aluminum castings from a hot chamber die casting machine, as well as a process for increasing the working life of an injection chamber for use in a hot chamber aluminum die casting machine, both of which involve the use of a passivated aluminum alloy in the machine. In the preferred embodiment, the process involves the use of an aluminum alloy which is passivated through the introduction of an amount of TiBr.sub.2, provided in amounts sufficient to retard corrosion of the steel of the hot chamber casting machine.

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ASM (Specialty Handbook), Al and Al alloys, Davis (ed.) Ohio, 1993, pp. 25-27.
American Society of Metals Committee on Die Casting, "Die Casting," pp. 285-286 (date unknown).

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