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Why does the aluminum profile extrusion machine change color during normal operation?

Why does the aluminum profile extrusion machine change color during normal operation?

Update Time:2023/1/16
When the aluminum profile extrusion machine is running normally, due to the oxidation reaction between the surface of the high temperature aluminum ingot and the oxygen in the air, some colors of the aluminum ingot will fade. This is a normal reaction, but the profile will not fade.
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