Processing Machinery
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PBT resistance to halogenated hydrocarbon erosion
Fenómeno do problema
Cracking after contact with halogenated hydrocarbon solvents.
Análise das causas
PBT is susceptible to halogenated hydrocarbon erosion; stress and medium act together to accelerate cracking.; when troubleshooting on site, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solução
①Avoid contact with halogenated hydrocarbon media; ②conduct media compatibility verification; ③reduce internal stress; ④select chemical-resistant grades.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Conclusão principal
PBT media compatibility must be verified in advance; halogenated hydrocarbons are a clear risk medium.; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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