我厂碳钢模具零件淬火,一般形状简单及尺寸较大的,采用盐水-油双重淬火;形状复杂、尺寸较小的(<30毫米),选用碱浴分级淬火。普遍存在前者淬火变形大、易产生裂纹、操作复杂,后者淬硬层浅受零件截面限制,同时碱易飞溅,劳动条件差。在批林批孔运动的推动下,我厂热处理工人、技术人员遵照毛主席关于:“破除迷信, My factory carbon steel mold parts quenching, the general shape of simple and larger size, the use of brine - oil dual quenching; complex shape, size smaller (<30 mm), the choice of alkaline bath classification quenching. Prevalent in the former large quenching deformation, easy to produce cracks, complex operation, the hardened layer of the latter by shallow cross-section restrictions, while easy to splash alkali, poor working conditions. Driven by the pro-Lin Pok campaign, our factory heat treatment workers and technicians follow Chairman Mao’s statement: "To get rid of superstition,