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在一般机械、五金电器、建筑陶瓷工厂的Cr12型模具生产中,其用量较大,在工艺上往往经过锻造、退火、粗精加工、淬火、回火、磨削、线切割等工序.但模具的裂纹又往往在磨削或线切割过程中发现,到底热处理裂纹还是磨削或是其他裂纹呢?成为工厂工序间争议不休的问题.据国际生产技术协会预测到2000年,产品零件粗加工的75%和精加工的50%将由模具成型完成,模具生产成本占产品成本费的10—30%,且逐步提高,而模具的报废,往往在热处理方面占相当比例,对于研究分析其裂纹的产生,从而采取有效措施防止
In the general machinery, electrical hardware, building ceramics factory Cr12-type mold production, the larger the amount, the process is often forged, annealed, rough finishing, quenching, tempering, grinding, wire cutting and other processes. Of the cracks are often found in the grinding or wire cutting process, in the end heat treatment crack or grinding or other cracks? Become a controversial process between the factory issue. According to the International Association of Production Technology predicted that in 2000, the rough parts of the product 75% and finishing 50% will be completed by the mold forming, mold production costs account for 10-30% of the cost of the product, and gradually improve, and die scrap, heat treatment is often accounted for a considerable proportion of its research to analyze the occurrence of cracks , To take effective measures to prevent