3 焊缝开裂原因与控制 焊缝开裂是门窗质量中比较隐蔽、最易被人忽略的问题之一,一旦发生又往往直接影响产品质量信誉,有可能给用户造成意外伤害或损失的质量故障,作为生产企业更应该高度警觉和重视。3.1 门窗焊缝开裂主要原因:3.1.1 焊缝本身存在隐裂现象。主要是两焊接截 3 The cause of cracking in welds and the control of cracking in welds are one of the hidden and easily overlooked issues in the quality of doors and windows. Once they occur, they often directly affect the reputation of product quality, and may cause unexpected damage or loss of quality to users. As a production company, it should be highly vigilant and valued. 3.1 The main reasons for the cracking of welds in doors and windows: 3.1.1 There is a crack phenomenon in the weld itself. The main two welding cut