Processing Machinery
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DSTDP internal black specks carbonization
Problem Phenomenon
DSTDP product interior shows 0.1-0.5mm black specks, carbonized matter
Cause Analysis
DSTDP heated for a long time in barrel dead corner zones and carbonized; carbon buildup at the screw head; raw material impurities
Solution
1) Lower processing temperature to reduce carbonization; 2) regularly clean screw and barrel; 3) filter raw material to remove impurities
Key Takeaway
Black specks are caused by thermal carbonization and carbon buildup; temperature reduction and regular cleaning are key
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