Liu Ning,Zhang Guixiang*,Chen Haoxin,et al.Parameter optimization of magnetic abrasive finishing 310S stainless steel based on response surface methodology[J].Plating & Finishing,2023,(6):77-83.[doi:10.3969/j.issn.1001-3849.2023.06.013]
基于响应曲面法的磁力研磨310S不锈钢参数优化
- Title:
- Parameter optimization of magnetic abrasive finishing 310S stainless steel based on response surface methodology
- Keywords:
- 310S stainless steel ; response surface methodology ; magnetic abrasive finishing ; surface quality
- 分类号:
- TH161
- 文献标志码:
- A
- 摘要:
- 采用磁力研磨光整加工技术( MAF )提高 310S 不锈钢工件的表面质量,探讨 3 种工艺参数对其表面粗糙度的影响规律。通过主轴改造后的 XK7136C 数控铣床作为加工平台,基于响应曲面方法,采用雾化快凝法制备的 Al 2 O 3 球形磁性磨料对 310S 不锈钢进行研磨实验研究。以磁力研磨后的表面粗糙度值( R a )为响应值,对实验过程中的主轴转速、进给速率和加工间隙进行优化,在主轴转速为 1720 r/min ,进给速度为 16 mm/min ,加工间隙为 1.8 mm 的条 件下恒定研磨 30 min ,工件的表面粗糙度值由初始的 0.350 μ m 下降至 0.039 μ m ,表面粗糙度模型预测值为 0.044 μ m ,实验实际值与预测值误差为 11.3 % 。残余压应力由初始的 - 289 MPa 增加至 - 391 MPa ,结果表明:磁力研磨后工件表面凹坑、毛刺和划痕均被去除,表面质量得到极大地改进。
- Abstract:
- : The surface quality of heat-resistant 310 stainless steel workpiece was improved by magnetic abrasive finishing ( MAF ) . The effects of three process parameters on the surface roughness were discussed. The XK7136C CNC milling machine after the spindle transformation was served as a processing platform. Based on the response surface methodology , the magnetic abrasive finishing of 310 stainless steel was carried out with Al 2 O 3 spherical magnetic abrasives which were prepared by gas atomization with rapid solidification. The surface roughness ( R a ) after MAF was selected as the response value , and the spindle speed , feed rate and machining gap during the experiments were optimized. Under the conditions of spindle speed 1720 r/min , feed rate 16 mm/min and machining clearance 1.8 mm , the workpiece was continuously finished for 30 min. Finally , the surface roughness of the workpiece decreased from 0.350 μ m to 0.039 μ m , and the predicted value of surface roughness model was 0.044 μ m. The error between the actual experiment value and the predicted value was 11.3 %. In addition , the residual compressive stress on the surface of the workpiece increased from - 289 MPa to - 391 MPa. The experimental results showed that the pits , burrs and scratches on the surface were removed after magnetic abrasive finishing. The surface of finished workpiece was very smooth and the surface quality had been improved well.
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备注/Memo
收稿日期: 2022-03-27 修回日期: 2022-05-30 作者简介: 刘宁( 1997 —),男,在读硕士生, email : 913768695@qq.com * 通信作者: 张桂香( 1964 —),女,博士,教授,研究方向:精密 / 超精密加工技术、特种加工工艺与装备及表面工程, email : zhanggx@sdut.edu.cn 基金项目: 国家自然科学基金资助项目( 51675316 )