Processing Machinery
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MP Internal Black Specks Carbonization
Problem Phenomenon
0.1-0.5mm black specks of carbonized material appear inside MP products
Cause Analysis
MP heated for a long time in dead zones of the barrel and carbonized; carbon deposits on the screw head; impurities in raw material
Solution
1) Lower processing temperature to reduce carbonization; 2) Regularly clean the screw and barrel; 3) Filter raw material to remove impurities
Key Takeaway
Black specks are caused by thermal carbonization and carbon deposits; lowering temperature and regular cleaning are key
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