孙岩,潘明诗,王杰,陈燕.仿形组合磁极研磨增材制造复杂表面工艺研究[J].表面技术,2023,52(6):361-368.
SUN Yan,PAN Ming-shi,WANG Jie,CHEN Yan.Technology of Grinding Complex Surfaces Obtained by Additive Manufacturing with Profiling Combined Magnetic Pole[J].Surface Technology,2023,52(6):361-368 |
| 仿形组合磁极研磨增材制造复杂表面工艺研究 |
| Technology of Grinding Complex Surfaces Obtained by Additive Manufacturing with Profiling Combined Magnetic Pole |
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| DOI：10.16490/j.cnki.issn.1001-3660.2023.06.032 |
| 中文关键词: 增材制造 磁粒研磨 表面粗糙度 仿形组合磁极 |
| 英文关键词:additive manufacturing magnetic particle grinding surface roughness profiling combined magnetic pole |
| 基金项目:国家自然科学基金(51775258) |
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| Author | Institution |
| SUN Yan | University of Science and Technology Liaoning, Liaoning Anshan 114051, China |
| PAN Ming-shi | University of Science and Technology Liaoning, Liaoning Anshan 114051, China |
| WANG Jie | Yantai Port Co., Ltd., and General Terminal Branch, Shandong Yantai 264000, China |
| CHEN Yan | University of Science and Technology Liaoning, Liaoning Anshan 114051, China |
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| 中文摘要: |
| 目的 改善零件表面质量，延长零部件使用寿命。方法 应用Ansys Maxwell模拟仿真沿盘形磁极圆周开不同形状槽时磁极磁感应强度的分布。以钛合金(Ti6Al4V)材料增材制造的成形零件为例，基于磁粒研磨抛光技术，利用仿形组合开槽磁极对成形零件沟槽表面进行研磨抛光。结果 模拟结果表明，沿磁极圆周开均布矩形槽时，磁极的磁感应强度波峰值最大，波谷值最小，磁场强度梯度变化最大，最适合复杂工件表面的磁粒研磨。磁性磨粒粒径、磁极转速和研磨间隙等参数的设置都会影响研磨加工效果，经模拟和实验获得最佳工艺参数为磁性磨粒粒径180 μm、磁极转速1 000 r/min、研磨间隙2 mm。设置如上所述的加工工艺参数，成形零件沟槽表面粗糙度Ra由原始的10.70 μm降为0.52 μm，且其表面缺陷得到有效去除。结论 采用仿形组合开槽磁极应用磁粒研磨技术能够实现增材制造复杂零件表面的研磨抛光。 |
| 英文摘要: |
| In order to improve the surface quality of parts and prolong their service life, it is necessary to grind and polish the surface of parts. Magnetic abrasive finishing is a branch of the new surface polishing technology in the finishing technology. Magnetic abrasive particles are added between the magnetic pole and the workpiece. Under the action of the magnetic field, the magnetic abrasive particles are arranged along the magnetic line of force to form a magnetic abrasive brush, which is attached to the workpiece surface under the action of the magnetic force. When there is a relative movement between the magnetic pole and the workpiece, the magnetic abrasive particles scratch along the workpiece surface to grind and polish the workpiece surface. The magnetic abrasive particles are attached, rolled and separated on the workpiece surface, which is not limited by the surface shape. It has good processing flexibility, adaptability, and a wide range of applications. In this paper, ANSYS Maxwell was used to simulate the distribution of magnetic induction intensity of the magnetic pole. When slots of different shapes were opened along the circumference of the disc-shaped axial magnetic pole, and to simulate the change curve of magnetic induction intensity at the same position when slots with different shapes were opened. The simulation results showed that when rectangular slots were evenly distributed along the circumference of the magnetic pole, the peak value of the magnetic induction intensity wave was the largest, the trough value was the smallest, and the gradient change of magnetic induction intensity was the largest, which was the most suitable for magnetic particle grinding of complex workpiece surfaces. The results showed that the magnetic induction intensity at the joint surface and edge of the combined magnetic pole was a little bigger than that at the same part of the overall magnetic pole, which was more suitable for the grinding of the groove surfaces. The setting of parameters such as magnetic abrasive particle size, magnetic pole speed and grinding gap would affect the grinding effect. The optimal process parameters obtained through simulation and experiment were:magnetic abrasive particle size of 180 μ m, magnetic pole speed of 1000 r/min, and grinding gap of 2mm. Taking the formed parts made of titanium alloy (Ti6Al4V) as an example, based on the magnetic abrasive polishing technology, the profiling combined the slotted magnetic pole was used to grind and polish the groove surface of the formed parts. The processing parameters were set as described above, and the surface roughness of the groove surface of the formed part was changed from the original 10.70 μm to 0.52 μm. And the surface defects were effectively removed. Therefore, the use of profiling combined slotted magnetic poles and the application of magnetic abrasive finishing technology can realize the grinding and polishing of the surface of complex parts made of additive materials. |
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