Extrusion & Post
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DSTDP extruder screw severe wear
Fenómeno do problema
After 200h of DSTDP extrusion, screw and barrel wear reaches 0.5mm
Análise das causas
Filler wears the screw greatly; screw material hardness insufficient, not nitrided; processing temperature on the high side causes DSTDP to adhere to the screw aggravating wear
Solução
1) Use nitrided screw or bimetallic screw SK-2 alloy; 2) lower processing temperature to reduce adhesive wear; 3) treat filler with coupling agent to reduce friction; 4) regularly check wear, replace in time when >0.3mm
Conclusão principal
Screw wear is caused by filler friction and adhesion; wear-resistant screw and temperature control are key
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