CAJ | 학술논문

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0.45 mm ，外部直径为2.9 mm ，内部直径为2 mm。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。
운용폐합장비평형자공천사방법（CFUBMSIP）재미형배상령건제압모구성형부위적표면도상일층약2μm후도적석묵미정결구적저마찰계수、고내마성적고체자윤활Graphit‐ic도층，제압성형출재질위CuZn33동합금원주형미형배，기벽후0.45 mm ，외부직경위2.9 mm ，내부직경위2 mm。통과DEFORM연건모의령건적성형과정，분석성형과정중적금속류동규률。연구발현，소도도층능기도량호적자윤활효과，가감소유우성형령건적미형화대래적마찰효응，위미제압성형적연구제공료일충신적윤활사로。
By a closed‐field unbalanced magnetron sputter ion plating technique ,a low‐friction and highly wear‐resistant Graphit‐ic coating with the thickness of 2μm was applied on the forming section of a micro‐extrusion mold .A micro‐cup of CuZn33 brass al‐loy was then extruded ,with wall thickness of 0.45mm ,outside diameter of 2.9mm ,and internal diameter of 2mm .Also ,based on DEFORM software ,the micro‐extrusion process was simulated and the metal flow rules were analyzed .The results show that the self‐lubrication effect can be obtained by this coating ,and the friction effect along with the miniaturization of product was re‐duced .The study provides a new method for the study of micro‐extrusion lubrication .