在工程和工业中,常会有不同零件需焊接,有时厚度会相差悬殊(几～几十倍),被焊厚度相差悬殊,由于受热和散热条件差异很大,造成两个被焊件的热状态不一致,往往是厚件加热不足,薄件过热烧穿,无法形成表面平滑的气密性好的焊缝。因此,不等厚度材料的焊接比较困难,厚度相差越大,越难焊接。 In engineering and industry, often there are different parts to be welded, and sometimes the thickness will vary greatly (a few to several times), the welding thickness difference, due to large differences in heat and cooling conditions, resulting in the two welded pieces of the thermal state Inconsistent, often thick pieces of heating inadequate, thin pieces of overheating burn, can not form a smooth surface of the gas tight welds. Therefore, ranging from the thickness of the material welding is more difficult, the greater the difference between the thickness of the more difficult welding.