锻压技术

毛刺高度不增加而提高无机绝缘涂层硅钢片冲裁次数的研究

英文标题：Study on the improvement of times on silicon steel sheet coated by inorganic insulation without increasing burr height

作者：李志江陈琛范希营

单位：江苏省徐州技师学院江苏师范大学

关键词：硅钢板绝缘层冲裁统计磨损润滑

分类号：TG386

出版年,卷(期):页码：2015,40(12):92-97

摘要：

冲裁涂覆无机绝缘涂层的硅钢片时，在毛刺高度符合要求的前提下，增加冲裁次数是企业的研究重难点。基于生产过程中冲裁次数与毛刺高度的密切关系，通过对厚度0.5 mm、直径Ф5 mm表面涂覆无机绝缘层的硅钢片，使用模具间隙0.025 mm、工作零件材料为Cr12MoV的模具进行冲裁实验，将实验数据进行统计分析，拟合出一定条件下冲裁次数与毛刺高度的数学模型。然后对有、无润滑两种情况冲裁后凸模、凹模和产品断面磨损情况的分析，得到在满足毛刺高度不增加的前提下，使用机油和丁黄蜡混合润滑的方法来提高冲裁次数，企业通过生产实践证明效果良好。

Increasing the number of blanking is an important but difficult technique for enterprises during research while silicon steel sheet coated by inorganic insulation is blanked and burr height meets the requirements. Based on the close relationship of blanking number with burr height, the blanking experiments of the silicon steel sheet Φ5 mm×0.5 mm with inorganic insulation coating was carried out by the die with clearance 0.025 mm and material Cr12MoV, and the mathematical model dealing with the number of blanking and burr height was fit under certain condition by statistical analysis on experimental data. Then by analyzing abrasion of punch, die and workpiece section that lubricated or not lubricated, the amount of blanking times was improved by mixing lubrication of engine oil with beeswax under the condition of burr height unchanged. It was proved that the practical effect is good.

基金项目：

江苏省徐州科技计划项目（XC13A016）

作者简介：李志江（1973-）男，学士，副教授通讯作者：陈琛（1981-）男，硕士，讲师

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