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Analysis and improvement of common welding quality defects (fifth issue)

Author: admin Published Date: 2018/4/16 concern Views: QR code sharing

Crater

1. Phenomenon The surface depression is formed during the welding arc, and is often accompanied by defects such as shrinkage holes and cracks.

2.Cause analysis

The arc is closed when the weld pool is not full in the welding receiving arc

Stop welding

Welders underestimate arcing

The arc stop time is inaccurate.

3. Prevention measures

⑴Extend the arc closing time.

⑵ Take correct arc closing method.

4. Governance measures

⑴Strengthen the operation skills of welders

Master various arc closing, arc stopping and welding operation methods of joints

⑵Strengthen welder responsibility

(3) Grinding and repair welding of arc craters that have been formed.


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