Processing Machinery
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POM seat belt buckle
Problem Phenomenon
Seat belt buckle POM parts break in crash tests
Cause Analysis
The buckle is subject to impact load, and ordinary grades have insufficient notched impact; during on-site troubleshooting, verify item by item according to this mechanism, and 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
Select high-impact grades; round the buckle structure; verify according to automotive crash standards; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Key Takeaway
Safety parts are selected and verified according to automotive impact standards; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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