Processing Machinery
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PC/ABS stress cracking
Problem Phenomenon
Cracking along stress concentration during use.
Cause Analysis
High internal stress; contact with solvent media induces environmental stress cracking.; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based on experience alone; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solution
①Reduce internal stress; ②avoid incompatible media; ③annealing treatment; ④compatibility verification.; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
For stress cracking, check stress and media; the PC component is sensitive to solvents.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems later
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