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在火力发电厂中,阀门磨损造成漏泄,是一个严重问题。提高工件耐磨性,延长使用寿命成为一个重要的技术课题。抚顺发电厂在渗硼过程中,经过反复试验,于79年末发现Fe_3O_4在渗硼中,有增渗和稳定质量的效果,进而试验研究了Fe_30_4-KBF_4作渗硼催渗剂的配量及其渗硼工艺,取得满意效果。在此基础上,又对其机理作了探讨。于920℃×4h渗硼处理,其渗层厚度可达150～180微米,连续层厚可达80～100微米,渗层均匀,经过渗硼的排污阀门运行了二年零四个月,于82年4月20日解体检查,末发现有变形和磨损,仍可继续使用。经过渗硼处理的低
In thermal power plants, valve wear and tear caused by leakage, is a serious problem. Improve the wear resistance of the workpiece, to extend the service life has become an important technical issue. Fushun Power Plant in the boronizing process, after repeated tests, found in the end of 79 Fe3O4 in boronizing, infiltration and stability of the quality of the effect, and then tested the Fe_30_4-KBF_4 boronizing carburizing agent dosage and its Boronizing process, to obtain satisfactory results. On this basis, we discuss the mechanism. At 920 ℃ × 4h boronizing treatment, the infiltration layer thickness of up to 150 to 180 microns, continuous layer thickness of up to 80 to 100 microns, infiltration layer evenly, after boronizing the sewage valve operation for two years and four months at April 20, 82 disintegration inspection, found no deformation and wear, can continue to use. Boronizing treatment is low