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我厂承接了为某单位焊接厚度为16mm紫铜板的焊接任务,为了圆满完成焊接工作,我们对紫铜进行如下分析:认为虽然紫铜具有良好的导热性、液态流动性等优点,但在焊接过程中还存在以下不足:一是紫铜的导热和热容量大,焊接时需要较大的热输入量,这样采用一般的焊接方法很难满足焊接要求;二是紫铜在焊接时,往往会因焊接受热不均匀而导致产尘收缩裂纹。同时在焊缝中也极易产生气孔等焊接缺陷。为此,我们决定采用埋弧自动焊方法,选用单面焊双面成型工艺焊接。因为埋弧自动焊的线能量大,熔
I plant to undertake a unit welding thickness of 16mm copper plate welding tasks, in order to successfully complete the welding work, we conducted the following analysis of copper: Although copper has good thermal conductivity, liquidity and other advantages, but in the welding process There are also the following deficiencies: First, copper thermal conductivity and heat capacity, welding requires greater heat input, so using the general welding method is difficult to meet the welding requirements; Second, copper welding, welding often due to uneven heating Lead to dust shrinkage cracks. At the same time in the weld is also very easy to produce holes and other welding defects. To this end, we decided to use submerged arc welding method, the selection of single-sided welding double-sided molding process welding. Submerged arc welding because the line of energy, melting