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粉末法渗硼是把工件埋入充满渗剂的箱或罐中加盖密封(或不密封),放入炉中加热即可。此法简单易行,不需特殊设备,易于推广。但由于存在处理温度高、时间长、渗层质量无法控制等问题,在工业上应用受到限制。最近,西德和日本在这方面又做了不少工作,在渗剂中引入了氟硼酸钾(KBF_4)或氟硼酸钠(NaBF_4),使渗入温度和时间明显降低,甚至在相变点 A_1以下的温度亦能产生明显的渗入作用。为了进一步搞清 KBF_4等渗剂成份的具体作用及粉末法渗硼机理,探讨不同钢种
Powder method boronizing is to fill the workpiece filled with permeation tank or tank stamped seal (or not sealed), can be placed in the furnace heating. This method is simple, without special equipment, easy to promote. However, due to the existence of processing temperature is high, a long time, the quality of the infiltration layer can not be controlled and other issues in the industrial application is limited. Recently, West Germany and Japan have done a lot of work in this area. By introducing potassium fluoborate (KBF_4) or sodium borofluoride (NaBF_4) in the permeating agent, the infiltration temperature and time are significantly reduced. Even at the phase transition point A_1 The following temperature can also produce significant infiltration. In order to further clarify the specific role of KBF_4 isotonizing agent composition and boronizing mechanism of powder, to explore different types of steel