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我们造船行业切割钢材的工作量很大,一些老师傅在长期实践中摸索出了一套整修割嘴和维修风表故障的经验,现总结如下供参考。我们使用的割炬多数是等压式的。这些割嘴除中心割孔外,另有4、6、8个预热孔,材料为紫铜,一般是用模锻方法制成,中心孔内壁光洁度低,有明显的皱纹和毛点,因此风线不够理想。另外,割嘴在使用中会囚高温变形增大气体流动阻力,使流速小于混合气燃烧速度而产生回火现象;或因粘附
Our shipbuilding industry cutting the workload of a large steel, some teachers in the long-term practice to explore out a set of repair cutting tips and maintenance of wind turbine failure experience, are summarized below for reference. Most of the torches we use are isostrophic. These cutting mouth in addition to the center cut hole, and another 4,6,8 preheating hole, the material is copper, is generally used forging method, the center hole wall finish is low, there are obvious wrinkles and hair, so the wind Line is not ideal. In addition, the cutting tip will be used in the high temperature deformation will increase the gas flow resistance, the flow rate is less than the mixed gas combustion rate and tempering phenomenon; or due to adhesion