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我厂电渣重熔冶炼高强度合金钢所用底水箱导电板为长1500mm、宽1200mm、厚22mm的紫铜板。在冶炼过程中常常被电弧击伤,出现直径大约100mm,深度不一的凹坑。通过手工电弧焊修复,装配后进行50MPa水压试验,均未出现渗漏现象,重新投入使用效果良好。其修复时补焊工艺如下: (1)用扁铲和手砂轮将缺陷处的钢与紫铜混合金属清除干净,直至露出纯净母材。 (2)选用φ5mm的T107焊条,焊前在200～250℃烘干、保温1～2h,随用随取。 (3)采用焦炭炉进行预热,将铜板水平
I plant electroslag remelting smelting high strength alloy steel tank used for the end of the long conductive plate length 1500mm, width 1200mm, thickness 22mm copper plate. In the smelting process are often arc wound, appeared about 100mm in diameter, the depth of different pit. By manual arc welding repair, assembly 50MPa hydrostatic test, no leakage occurred, re-put into use with good results. Repair repair welding process is as follows: (1) with a flat shovel and hand wheel to defects at the steel and copper mixed metal clean until exposed pure base metal. (2) Selection of φ5mm T107 electrode, before welding at 200 ~ 250 ℃ drying, insulation 1 ~ 2h, with the use of take. (3) preheating with coke oven, the level of copper