我厂通过技术革新,对回动轴轴颈采用CO_2气体保护半自动堆焊,代替手工电弧堆焊。实践证明,具有以下优点:1.效率高。堆焊一根回动轴两端的轴颈,只需40分钟。2.堆焊层是以轴线为中心的同心圆组成,可避免焊接变形,便于掌握焊层的厚度,提高堆焊质量,减少了焊后的机械加工量。3.成本较低,并解决了焊条缺乏的困 I plant through technological innovation, the rotary shaft journal CO_2 gas semi-automatic welding, instead of manual arc surfacing. Practice has proved that, with the following advantages: 1. High efficiency. Surfacing a welding shaft at both ends of the shaft, just 40 minutes. 2. Surfacing layer is composed of axis-centered concentric circles, to avoid welding deformation, easy to grasp the thickness of the weld layer, improve the quality of surfacing, reducing the amount of machining after welding. 3. The cost is lower, and solves the shortage of electrodes