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我所在制造海水淡化装置中,发现该装置由于要求耐腐蚀性强,而在该装置中,黄铜材料占整个装置所用材料的70％多。而且,黄铜件之间的焊接,黄铜件与钢件之间的焊接等的工作量很大。该装置对气密性,水密性以及焊接的机械强度等均有严格的要求。黄铜的焊接比钢的焊接困难,其主要的困难是在焊接中,铜合金中的锌容易蒸发(锌在906℃时开始蒸发),从而产生多气孔的焊缝,而黄铜在液态时易氧化,生成CuO,ZnO,其熔点高于黄铜的熔点,易于存留在焊缝中,破坏了焊缝的机械强度。
I am manufacturing a desalination plant and found that the unit is strong in terms of corrosion resistance, where the brass material accounts for more than 70% of the total plant material. Moreover, the work between the brass pieces welding, brass pieces and the welding between the pieces of steel and other heavy workload. The device has strict requirements on airtightness, watertightness, and mechanical strength of the weld. Brass welding is more difficult than steel welding. The main difficulty is that during welding, the zinc in the copper alloy evaporates easily (zinc starts to evaporate at 906 ° C), creating a multi-porosity weld. When the brass is in the liquid state Easily oxidized, generating CuO, ZnO, the melting point higher than the melting point of brass, tend to remain in the weld, breaking the mechanical strength of the weld.