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针对目前常用的小孔冲裁用细长凸模保护套制造方法存在的加工难、成本高、耐磨性不足等问题,研究了一种新型的细长凸模保护套制造方法。首先采用普通钢加工出保护套,然后通过纳米化学复合镀工艺提高保护套表面硬度和耐磨性。结果显示,通过该方法获得的镀层硬度和耐磨性与常用硬质合金高强度材料的性能相当;镀层表面能谱分析和形貌分析表明,纳米SiC粒子对增强镀层表面硬度和耐磨性具有重要作用;该方法工艺简单、成本较低,值得在工程实际中推广采用。
Aiming at the problems such as difficult processing, high cost and insufficient wear resistance, the manufacturing method of slender punch protective cover used in the punching of holes at present is studied. A new type of slender punch protective cover manufacturing method is studied. The first use of ordinary steel processing protective sleeve, and then through the nano-chemical composite plating process to improve the protective sleeve surface hardness and wear resistance. The results show that the hardness and wear resistance of the coating obtained by this method are comparable to those of the commonly used high strength cemented carbide materials. The surface energy spectrum analysis and morphology analysis of the coating show that the nano SiC particles have the potential to enhance the surface hardness and wear resistance of the coating An important role; the method is simple, low cost, it is worth promoting in engineering practice.