微细铣削不锈钢310S表面完整性试验研究

发布时间：2018-05-27 12:11

本文选题：表面完整性 + 表面粗糙度　；参考：《表面技术》2017年07期

【摘要】：目的揭示微细铣削下的切削深度ap、进给量f、切削速度v对不锈钢310S表面完整性的影响规律,为优化不锈钢310S的切削工艺提供参考。方法基于响应曲面方法,采用涂层硬质合金微直径铣刀,对不锈钢310S进行了铣削加工试验,对表面粗糙度、表面形貌和显微硬度的数据和信息进行采集并分析,进行多元非线性回归,建立了表面粗糙度Ra与切削参数之间的映射关系,对多元回归方程进行了显著性检验。结果得到切削参数ap、v、f显著度分别为0.099、0.620、0.011。基于曲面响应法的试验数据及数学模型,直观地绘制了ap、v、f对表面粗糙度Ra、表面形貌和显微硬度的影响规律图。结论在一定的切削加工参数范围内,进给量f对微细铣削不锈钢310S表面粗糙度Ra的影响最显著,其次是切削深度ap,切削速度v的影响最小。表面留有摆线状加工痕迹,顺铣侧的残留物分布多于逆铣侧。切削深度ap对310S试件表层显微硬度的影响最显著,其次是切削速度v。减小进给量f是降低不锈钢310S表面粗糙度的有效加工方法。
[Abstract]:Aim to reveal the influence of cutting depth, feed rate and cutting speed on the surface integrity of stainless steel 310s under micro-milling, and to provide a reference for optimizing the cutting process of stainless steel 310s. Methods based on the response surface method, the milling experiments of stainless steel 310s were carried out by using coated cemented carbide micro-diameter milling cutter. The data and information of surface roughness, surface morphology and microhardness were collected and analyzed. The mapping relationship between surface roughness Ra and cutting parameters was established by multivariate nonlinear regression, and the significance of multivariate regression equation was tested. The results showed that the saliency of the cutting parameter APGV was 0. 09 0. 620 and 0. 011, respectively. Based on the experimental data and mathematical model of the surface response method, the effects of apapvfon on the surface roughness, surface morphology and microhardness are drawn directly and intuitively. Conclusion in a certain range of cutting parameters, feed rate f has the most significant effect on surface roughness Ra of 310S stainless steel, followed by cutting depth apand cutting speed v. The surface has cycloidal machining marks, and the distribution of residues in the milling side is more than that in the reverse milling side. The effect of cutting depth AP on the surface microhardness of 310s specimen is the most significant, followed by cutting speed v. Reducing feed f is an effective machining method for reducing surface roughness of stainless steel 310s.
【作者单位】：北京建筑大学机电与车辆工程学院;城市轨道交通车辆服役性能保障北京市重点实验室;
【基金】：北京市教育委员会科技计划面上项目(KM201510016008) 北京市优秀人才培养资助(2014000020124G056)~~
【分类号】：TG54

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