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我公司安装处是锅炉压力容器制造安装单位。为了保证锅炉压力容器的焊接质量,我们学习了双点击穿焊法。经过几年的实验,摸索出一套完整的工艺方法,现以16MnR板的焊接为例总结如下。一、工艺参数材质 16MnR 焊件形状及规格板状,12×300×250mm 坡口形式 V型60 ±5 坡口加工方法机械加工光洁度焊条型号及直径 J506.φ3.2～4mm 焊条烘干温度 380～400C×1h 焊接极性直流反接空载电压 75V～80V 工作电压 25V～32V 焊接电流一层90A,其余130～160A 焊接方法双点击穿焊法焊接层数 4层层温控制 80～100℃施焊现场温度零上10℃左右焊后保温方法自然缓冷焊前要求焊件按规定要求严格清理。二、操作方法把已经清理好的焊件(板状)平放在操作台角铁架上,焊件未端用φ4mm焊条头垫起。使焊件保持在4～6的坡度,这样使熔池既能得到渣的保护,又能减少焊缝夹渣产生的
My company is installed at the boiler pressure vessel manufacturing installation unit. In order to ensure the quality of the boiler pressure vessel welding, we studied the double-click wear welding method. After several years of experiments, to explore a complete set of process, now 16MnR plate welding as an example below is summarized. First, the process parameters Material 16MnR Weldment shape and size Plate, 12 × 300 × 250mm Bevel form V 60 ± 5 Bevel Processing methods Machining Finish Electrode Model and diameter J506.φ3.2 ~ 4mm Electrode drying temperature 380 ~ 400C × 1h Welding Polarity DC Reverse Load No-load Voltage 75V ~ 80V Working Voltage 25V ~ 32V Welding Current One 90A, others 130 ~ 160A Welding Method Double Click Wear Welding Layer 4 Layer Temperature Control 80 ~ 100 ℃ Soldering temperature on the spot about 10 ℃ after welding method of natural slow cooling before welding requirements of welding parts required strict clean-up. Second, the method of operation Have been cleaned good pieces (plate) flat on the operating desk angle iron frame, weldment end with φ4mm electrode head pad. So that the weldment to maintain the slope of 4 to 6, so that the molten pool can be slag protection, but also reduce the weld slag generated