采用高频感应熔覆技术,在12Cr Mo V合金结构钢材质的锅炉管表面进行了采用热喷涂、水玻璃作为黏结剂冷预置涂层、高频感应同步送粉器直接将合金粉末送于锅炉管表面3种工艺方法制备Ni Cr Si B耐磨合金涂层实验研究,用SEM和能谱仪分析了...采用高频感应熔覆技术,在12Cr Mo V合金结构钢材质的锅炉管表面进行了采用热喷涂、水玻璃作为黏结剂冷预置涂层、高频感应同步送粉器直接将合金粉末送于锅炉管表面3种工艺方法制备Ni Cr Si B耐磨合金涂层实验研究,用SEM和能谱仪分析了基体与熔覆层界面和熔覆层间的微观组织及成分,开展了硬度测试实验.结果表明:在熔覆电流为830 A、熔覆频率为250 k Hz的条件下,热喷涂法得到的熔覆层与基体有明显的间隙;水玻璃作为黏结剂冷预置涂层法获得的熔覆层有夹渣且表面不平整;而同步送粉法得到的熔覆层表面平整,熔覆层和基体间有明显的锯齿状白亮带,表明熔覆层和基体形成良好的冶金结合,熔覆层平均硬度为310 HV,是基体硬度的2倍.可见同步送粉高频感应熔覆工艺相对于预涂层法高频感应熔覆具有环保、加工效率高、无空隙夹渣、圆柱面平整度高、低成本等明显优势。展开更多
In the course of the basic research on the ammonia-evaporation reaction of manganese monoxide （MnO）, hydroxyl manganese chloride （Mn2（OH）3Cl） was found. The solubility and phase diagrams of the hydroxyl manganes...In the course of the basic research on the ammonia-evaporation reaction of manganese monoxide （MnO）, hydroxyl manganese chloride （Mn2（OH）3Cl） was found. The solubility and phase diagrams of the hydroxyl manganese chloride were investigated. The aqueous thermostat and vibrating bed were used to determine the solubility of hydroxyl manganese chloride in water, ammonium chloride and manganese chloride system, and the phase diagrams of multicomponent system were drawn. The research results indicate that hydroxyl manganese chloride has been produced in laboratory and is in favor of the solid-liquid separation at high temperature.展开更多
文摘采用高频感应熔覆技术,在12Cr Mo V合金结构钢材质的锅炉管表面进行了采用热喷涂、水玻璃作为黏结剂冷预置涂层、高频感应同步送粉器直接将合金粉末送于锅炉管表面3种工艺方法制备Ni Cr Si B耐磨合金涂层实验研究,用SEM和能谱仪分析了基体与熔覆层界面和熔覆层间的微观组织及成分,开展了硬度测试实验.结果表明:在熔覆电流为830 A、熔覆频率为250 k Hz的条件下,热喷涂法得到的熔覆层与基体有明显的间隙;水玻璃作为黏结剂冷预置涂层法获得的熔覆层有夹渣且表面不平整;而同步送粉法得到的熔覆层表面平整,熔覆层和基体间有明显的锯齿状白亮带,表明熔覆层和基体形成良好的冶金结合,熔覆层平均硬度为310 HV,是基体硬度的2倍.可见同步送粉高频感应熔覆工艺相对于预涂层法高频感应熔覆具有环保、加工效率高、无空隙夹渣、圆柱面平整度高、低成本等明显优势。
基金Project (062702) supported by Innovation Funds of Institute of Process Engineering,Chinese Academy of Sciences
文摘In the course of the basic research on the ammonia-evaporation reaction of manganese monoxide （MnO）, hydroxyl manganese chloride （Mn2（OH）3Cl） was found. The solubility and phase diagrams of the hydroxyl manganese chloride were investigated. The aqueous thermostat and vibrating bed were used to determine the solubility of hydroxyl manganese chloride in water, ammonium chloride and manganese chloride system, and the phase diagrams of multicomponent system were drawn. The research results indicate that hydroxyl manganese chloride has been produced in laboratory and is in favor of the solid-liquid separation at high temperature.
