炉底加热管爆管原因分析
Reason Analysis for Explosive of Heating Tube at Furnace Bottom
马海平
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作者单位：（青海桥头铝电股份有限公司，青海 西宁 810100）
中文关键字：裂纹； 分析； 焊缝热影响区； 应力
英文关键字：crack; analysis; weld heat affected zone; stress
中文摘要：青海桥头铝电股份有限公司发电分公司二厂2#炉炉底加热管更换运行2天后，发现其距管座200 mm的焊缝热影响区即管座坡口加工的拐角处有裂纹产生，并造成泄漏。通过产生裂纹原因的分析，提出了几点今后更换同类管道应该注意的事项。
英文摘要：The fourth heating tube at furnace bottom in No. 2 furnace in Qinghai Qiaotou aluminum electricity Ltd was cracked after replacement and run of two days later. The crack was found at the corner that located at the machined groove of the tube socket, 200 mm away from the weld heat affected zone. In this paper the cause of initiated crack was analyzed. Furthermore, some notices in the replacement of the same pipes were given.