铝型材焊接准备事项
添加时间：2017-10-10
铝型材料，1焊接特性：铝及铝合金具有导热性强而热容量大、熔点低和高温强度小等特点，焊接难度大，应采取一定的措施，才能保证焊接质量。2管件及焊丝的清理，焊丝及破口两侧范围内表面用丙酮清洗干净，用不锈钢丝刷刷去表面氧化膜，露出金属光泽，清理好的拉弧螺柱焊钉必须在2小时内焊接。3钨棒选用铈钨棒，氩气钝质不小于99.96，且含水量不应大于50mg/m3。Aluminum material, 1 welding characteristics: aluminum and aluminum alloy with thermal conductivity of strong and large thermal capacity, low melting point and high strength and small features, and welding difficulty is big, some measures should be taken, in order to ensure the welding quality. 2 fittings and welding wire cleaning, welding wire and break sides range surface with acetone to clean, with stainless steel wire brush to the surface oxide film, with metallic luster, clean nails drawn arc stud welding good must be welded in 2 hours. 3 tungsten use cerium tungsten rod, argon blunt matter of not less than 99.96, and the moisture content should not be greater than 50mg/m3.螺柱焊机
螺柱焊机技术的今后发展趋势主要是扩大应用范围、提高拉弧螺柱焊机焊接自动化水平和焊接设备的更新换代。其中硬件的发展是关键，即将晶闸管控制的焊接电源升级为逆变式焊接电源。目前逆变使用的开关元件有快速晶闸管和IGBT两种。前者的逆变频率较低，几kHZ，但输出功率较大;后者频率较高，十几kHZ，但输出功率较低。从电源的动特性、体积重量等方面考虑，IGBT应该是发展方向。
The future development trend of stud welding technology is mainly to expand the scope of application, improve the drawn arc stud welding machine welding automation level and welding equipment renewal. The hardware development is the key, the upcoming thyristor welding power supply control for inverter welding power supply upgrade. The switching element at present inverter with the use of fast switching thyristor and IGBT two. The inverter frequency of the former is lower, a few kHZ, but a larger output power; the latter frequency is higher, more than 10 kHZ, but with lower output power. Considering dynamic characteristics, size and weight of the power supply, the IGBT should be the direction of development.