论文部分内容阅读
在我厂的生产中,有不少紫铜与钢两种不同金属零件焊掳在一起的构件,经过几年实践,掌握了一些规律,介绍如下: 一、铜的可焊性紫铜的可焊性较差,对于厚度大、技术要求高的紫铜与钢的焊接就更加困难,主要原因是: 1.焊缝金属与母材不易熔合。原因是紫铜具有强烈的导热性。据一些资料指出,室温下紫铜的导热系数大约是钢的8倍,而在1000℃时大约为10倍,因此,如果采用与焊接低碳钢相同的焊接规范,则焊接区的热量不足,紫铜不能充分熔化,
In the production of our factory, there are a lot of copper and steel parts welded together two different metal parts, after several years of practice, mastered some of the rules, described as follows: First, the weldability of copper Weldability of copper Poor, for thick, high technical requirements of the copper and steel welding even more difficult, the main reason is: 1. Weld metal and base metal is not easy to fuse. The reason is that copper has a strong thermal conductivity. According to some sources, the thermal conductivity of copper at room temperature is about 8 times that of steel and about 10 times higher at 1000 ° C. Therefore, if the same welding code is used for welding mild steel, the heat in the welding area is insufficient and the copper Can not fully melt,