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蒸汽锤是我厂锻钢生产使用的主要设备之一。其砧座燕尾部金属在热状态下长期受交变冲击载荷作用,发生蠕变,加上反复受热和冷却,导致热疲劳破坏。轻者产生裂纹,严重时金属成块脱落,不能继续使用(图1)。对这种缺陷,以前采用手工电弧堆焊修复。由于堆焊金属量大(堆焊面积可达600×250×130mm),常常是3～4名焊工轮流施焊,劳动强度大,修复时间长。自改用埋弧堆焊工艺后,可提高工效5倍以上,工人劳动强度大大降低,先后修复了十几台砧座,使用情况良好。
Steam hammer is one of the main equipment used by our factory for forging steel production. Its anvil dovetail tail metal in the hot state long-term impact by alternating load, creep, coupled with repeated heating and cooling, leading to thermal fatigue damage. Light cracks, in severe cases the metal off into pieces, can not continue to use (Figure 1). For this defect, previously used manual arc surfacing repair. Due to the large amount of surfacing metal (surfacing area of up to 600 × 250 × 130mm), often 3 to 4 welders in turn welding, labor-intensive, long repair time. Submerged submerged arc surfacing process, can improve work efficiency more than 5 times, greatly reducing the labor intensity of workers, has repaired a dozen anvil, the use of good.