Elimination of crack in deep-penetration laser welding

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South China Normal Univ, Guangzhou, China [1 ]
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Yingyong Jiguang | / 2卷 / 79-81期
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Cracks;
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摘要：
There exist two kinds of welding crack: root crack and longitudinal crack in deep-penetration laser welding. Making a groove to relief stress, preheating and after-heating are the effective measures to eliminate these cracks.
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