提高模具的耐磨性和寿命的方法之一是采用(?)膏进行硼化。它是保加利亚科学院研制的。本膏由两部分粉状组份和硬化剂组成,在使用前拌合。为获得硼化表面的最佳质量层,热处理前应进行小余量(R_t=2～4μm)抛光。硼化前表面须除油。操作过程如下:将膏层涂在零件的工作表面上,并在温度达100℃的空气中干燥。当零件置于一般箱式炉空气中加热时,应覆盖粉状石墨。当在盐浴或惰性介质炉中加热时,无需涂石墨。在许多情况下,零件可在充满铸铁屑的箱中加热。在等温保持时间(在扩散温度下)后,将零件的温度提高到该种钢的淬火温度,然后将零件从炉中取出,并与金属板猛烈撞击,膏层便从表面上脱落,再将零 One of the ways to improve the wear resistance and life of the mold is to use (?) Paste for boring. It is developed by the Bulgarian Academy of Sciences. The paste consists of two parts of powder components and hardener, mix before use. To obtain the best quality layer on the boride surface, a small margin (R_t = 2 ~ 4μm) should be polished before heat treatment. The surface before boring should be degreased. The procedure is as follows: The cream layer is applied to the part work surface and dried in air at a temperature of 100 ° C. When the parts are placed in the general box furnace heating air, should be covered with powdered graphite. Graphite is not required when heated in a salt bath or inert media furnace. In many cases, parts can be heated in a box filled with cast iron. After the isothermal holding time (at the diffusion temperature), the temperature of the part is raised to the quenching temperature of the steel, and then the part is taken out of the furnace and violently impacted with the metal plate, the layer of the paste is peeled off from the surface, zero