高温高压阀门密封面堆焊焊条——堆547钼(原29号焊条),在推广使用过程中常被热电系统用来修复废旧阀门密封面。为使这项工作更好地开展,我们曾先后与包头第一热电厂、上海望亭发电厂、北京热电厂等单位做了一些试验。下面就来谈谈现场中遇到的一些问题和所要注意的事项。 High temperature and pressure valve sealing surface surfacing electrode - heap 547 molybdenum (the original No. 29 electrode), in the promotion of the use of thermoelectric system is often used to repair waste valve sealing surface. In order to make this work better, we have done some experiments with Baotou No.1 Thermal Power Plant, Shanghai Wangting Power Plant and Beijing Thermal Power Plant. Here to talk about some of the problems encountered in the scene and the matters needing attention.