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The contact-tube distance in gas-shielded metal-arc welding - How does it work?
被引：0
作者：
Aichele, G.
机构：
来源：
Schweissen und Schneiden/Welding and Cutting
|
2002年
/
54卷
/
02期
关键词：
Coated wire electrodes - Electric contacts - Electric currents - Electric resistance - Electric shielding - Voltage measurement;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Contact-tube distance is the dimension between the bottom edge of the contact tube and the melting workpiece surface. When this distance becomes too great, the electrical resistance in the wire-electrode stick-out rises, consequently reducing the welding current and the penetration depth. Trouble also occurs when one moves the contact tube too close to the weld pool. To stop the occurrence of such problems, a close look should be taken on the relationship between the contact-tube distance and the wire-electrode stick-out.
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页码：80 / 83
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