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运用闭合场非平衡磁控溅射方法 (CFUBMSIP)在微型杯状零件挤压模具成形部位的表面镀上一层约2μm厚度的石墨微晶结构的低摩擦系数、高耐磨性的固体自润滑Graphit-ic涂层,挤压成形出材质为CuZn33铜合金圆柱形微型杯,其壁厚0.45mm,外部直径为2.9mm,内部直径为2mm。通过DEFORM软件模拟零件的成形过程,分析成形过程中的金属流动规律。研究发现,所镀涂层能起到良好的自润滑效果,可减小由于成形零件的微型化带来的摩擦效应,为微挤压成形的研究提供了一种新的润滑思路。
The closed-field unbalance magnetron sputtering method (CFUBMSIP) is used to coat the surface of the extrusion part of the miniature cup-shaped parts with a layer of graphite microcrystalline structure with a thickness of about 2 μm, which has low friction coefficient and high wear resistance. Graphit-ic coating was extruded into a CuZn33 copper alloy cylindrical microcup with a wall thickness of 0.45 mm, an outer diameter of 2.9 mm and an inner diameter of 2 mm. Through DEFORM simulation of parts forming process, analysis of metal flow in the forming process. The study found that the coating can play a good self-lubricating effect, can reduce the friction due to miniaturization of forming parts, providing a new lubrication method for micro-extrusion research.