一、铜对软钢焊缝金属的影响从事焊接工作的人,都知道为了防止自动焊丝生锈,在焊丝表面镀上一薄层铜。人们往往担心这会不会使焊缝金属的机械性能变坏?根据意大利罗马冶金实验中心的研究结果,认为焊丝中的含铜量不超过0.86％时,焊缝金属的抗拉强度并不降低,屈服和抗拉强度反而稍有增大,也 First, the impact of copper on the soft steel weld metal welding work engaged in people know that in order to prevent rusting automatic wire, wire coated with a thin layer of copper. People often worry that this will not deteriorate the mechanical properties of the weld metal? According to the results of the Rome Metallurgical Experiment Center in Italy, that the amount of copper in the wire does not exceed 0.86%, the tensile strength of the weld metal does not decrease Yield and tensile strength but slightly increased, but also