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铝锌镁合金是一种高强度的铝合金,一些汽车零件多用这种合金,如化油器,油泵及速率表等。这些零件在使用一定时间后,即发生磨损或破裂,需焊补修复。铝锌镁合金是一种最难焊接的铝合金,主要表现在,焊接时不易控制熔化温度,容易造成烧穿或塌陷,有时由于焊接工艺不当而产生气孔或夹渣,从而导致渗漏。焊接纯铝及铝合金时,往往采用有不同要求的铝焊药,通过其化学反应或物理溶解
Aluminum-zinc-magnesium alloy is a kind of high-strength aluminum alloy. Some automobile parts use this kind of alloy, such as carburetor, oil pump and speed meter. After the use of these parts for a certain period of time, wear or tear occurs, the need to repair welding repair. Al-Zn-Mg alloy is one of the most difficult to weld aluminum alloy, mainly in the welding temperature is not easy to control, easy to burn or collapse, and sometimes due to improper welding process resulting porosity or slag, resulting in leakage. When welding pure aluminum and aluminum alloy, often have different requirements of aluminum welding agent, through its chemical reaction or physical dissolution