Processing Machinery
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PVC Rigid Sheet Welding
Problem Phenomenon
Chemical tank welded from PVC rigid sheets leaked
Cause Analysis
Improper welding process or sheet stress caused leakage at the weld; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solution
Welders operate with certification; weld inspection; stress relief of sheet blanking; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Key Takeaway
Tank welds are guaranteed by process and inspection; 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 in the future
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