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Improved Casting Appearance
Flow marks or cold
shot is caused by uneven cooling of the metal and how the molten metal flows
during the casting process. When
MetaLLife
is applied to dies for casting aluminum or especially magnesium, the
resultant textured surface causes a more turbulent flow which eliminates
common flow marks. By improving flow, MetaLLife allows a more even cooling
rate of the molten metal. The flow marks may show up even after the casting
is painted or plated.
Cracks and
broken out metal in the die steel, usually do not compromise the casting
integrity. They do, however, result in a higher cosmetic reject rate
and/or frequently require extensive rework of the casting or a higher reject
rate. By being able to close up these minor cracks and by buffering
the destructive effect of cavitation breakout,
MetaLLife
helps improve overall casting appearance.
Polishing the
MetaLLife,
while it helps reveal a higher level of compression, does remove the flow
effect benefit which some customers require to obtain acceptable castings.
Rejected Casting Surface - cracking
and breakout
Related Topics >
Eliminates Laminations |
