[China Aluminum Industry Network] 1. Strengthen the control of the quality of ingots;
2, in the material box reasonably placed profiles, try to avoid mutual friction;
3, improve the quality of mold repair, the mold periodically nitrided and strictly enforce the nitriding process;
4. Handle with care in production, try to avoid arbitrarily dragging or turning profiles;
5. Use soft felt to separate the profiles from the auxiliary tools to minimize the contact damage between the profiles and the auxiliary tools.
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