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M-964冷冲模是南京微分电机厂生产的、用于冲裁洗衣机电机定子硅钢片(冲片)的模具,材料为Cr12钢。该模具装在普通冲床上工作,冲击力30t左右。工作过程中通常由于模具刃口磨损变圆,使冲片毛刺太多或尺寸超差,有时也有崩刃现象。因此,对该模具性能的一般要求是具有高的硬度和耐磨性,同时具有足够的强度和韧性。过去,该模具经普通淬火处理后使用,模具表面硬度HRC 58～60,一般冲裁一万次左右就需要翻修刃磨一次,使用寿命短,且装
M-964 Die is the production of differential motor factory in Nanjing, used for punching washing machine motor stator silicon steel (punch) mold, the material is Cr12 steel. The mold installed in the ordinary punch on the impact of about 30t. Work is usually due to mold edge wear and tear round, so too much or excessive punching burr size, and sometimes chipping phenomenon. Therefore, a general requirement for the performance of the mold is to have high hardness and wear resistance while having sufficient strength and toughness. In the past, the mold after the use of ordinary quenching, the mold surface hardness HRC 58 ~ 60, the general punching about ten thousand times the need to renovate sharpening, short life, and equipment