近来,许多地区将磁石置炉火上直火煅烧醋淬。此法在实践中我们认为:一是污染药物,二是火候难以达到所需程度,三是损耗较大。因此,我们试用Rx_3-75-9型箱式加热电阻炉升温煅烧醋淬,其结果较为理想。具体操作方法: Recently, in many areas, magnets are placed on a fire and burnt with vinegar and quenched. In practice, we believe that: First, it is to contaminate drugs; second, it is difficult to achieve the required level of heat, and third, the loss is greater. Therefore, we try Rx_3-75-9 box heating resistance furnace heating calcined vinegar quenching, the result is more ideal. Specific operation method: