Molding Process
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Circumferential cracks in welds
Problem Phenomenon
Circumferential cracks in hot-melt welds and low pressure bearing
Cause Analysis
The heating time is short and melting is insufficient; the pressure is large and the weld is thin
Solution
Extend the heating time, reduce the pressure to 0.15MPa, heat preservation, NDT testing
Key Takeaway
Circumferential cracks are a major hidden danger of welds
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