弯管磁粒研磨的差异化加工工艺试验研究

徐进文; 陈松; 胡菁华; 张磊; 杨欢; 陈燕

doi:10.13394/j.cnki.jgszz.2021.3005

弯管磁粒研磨的差异化加工工艺试验研究

doi: 10.13394/j.cnki.jgszz.2021.3005

徐进文¹,
陈松^1, ,,
胡菁华²,
张磊¹,
杨欢¹,
陈燕¹

1.
辽宁科技大学机械工程与自动化学院，辽宁鞍山 114501
2.
MCC中冶北方(大连)工程技术有限公司，辽宁大连 116000

基金项目: 国家自然科学基金（51775258）；辽宁省教育厅基金（2020FWDF07）

详细信息

通讯作者:
陈松，男，1976年生，副教授。主要研究方向：精密加工与特种加工。E-mail：paicchensong@126.com

中图分类号: TG58; TG73
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- 被引次数: 0
出版历程
- 收稿日期: 2021-09-30
- 修回日期: 2022-03-04
- 刊出日期: 2022-08-16

Experimental study on differential processing technology of magnetic particle grinding of elbow

1.
School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan 114501, Liaoning, China
2.
Northern (Dalian) Engineering & Technology Corporation, MCC, Dalian 116000, Liaoning, China

摘要

摘要: 根据弯管冲蚀破坏处的特点，提出一种新的差异化加工工艺。利用机械手的灵活性，在弯管加工过程中改变弯管内外侧的加工间隙，实现弯管内壁的差异化研磨，提高其表面质量。结果表明：在加工时间为75 min，弯管内外侧加工间隙均为2.0 mm时，弯管外弧的内表面粗糙度从0.70 μm下降到0.34 μm，弯管内弧的内表面粗糙度从0.82 μm下降到0.32 μm；在差异化研磨时，弯管外侧加工间隙为1.5 mm，内侧加工间隙保持为2.0 mm不变，弯管外弧的内表面粗糙度从0.70 μm下降到0.26 μm，弯管内弧的内表面粗糙度从0.82 μm下降到0.29 μm。差异化研磨可有效提高弯管的内表面质量。
- 磁粒研磨 /
- 表面粗糙度 /
- 弯管 /
- 加工间隙
Abstract: According to the characteristics of elbow erosion damage position, a new differential processing technology was proposed. Using the flexibility of the manipulator, the machining gap between the inner and the outer side of the elbow was changed in the process of elbow machining, so as to realize the differential grinding of the inner wall of the elbow and improve its surface quality. The results show that when the machining time is 75 min and the machining gap between the inner and the outer side of the elbow is 2.0 mm, the inner surface roughness of the outer arc of the elbow is reduced from 0.70 μm to 0.34 μm, and the inner surface roughness of the inner arc of the elbow is reduced from 0.82 μm to 0.32 μm. During differential grinding, the outer machining gap of the elbow is 1.5 mm, the inner machining gap remains unchanged at 2.0 mm, the inner surface roughness of the outer arc of the elbow is reduced from 0.70 μm to 0.26 μm, and the inner surface roughness of the inner arc of the elbow is reduced from 0.82 μm to 0.29 μm. Differential grinding can effectively improve the inner surface quality of the elbow.
- magnetic abrasive finishing /
- surface roughness /
- elbow /
- machining gap

HTML全文

图 1 弯管缺陷图

Figure 1. Elbow defect diagram

下载: 全尺寸图片幻灯片

图 2 弯管磁粒研磨原理

Figure 2. Magnetic particle grinding principle of bending tube

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图 3 磨粒受力分析

Figure 3. Force analysis of abrasive particles

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图 4 研磨轨迹示意图

Figure 4. Lapping trajectory diagram

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图 5 磁感应强度云图

Figure 5. Magnetic induction intensity nephogram

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图 6 磁感应强度曲线

Figure 6. Magnetic induction intensity curve

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图 7 磁粒研磨装置

Figure 7. Magnetic particle grinding device

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图 8 传统磁粒研磨加工示意图

Figure 8. Schematic diagram of traditional magnetic particle grinding

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图 9 弯管偏置加工中线后的加工示意图

Figure 9. Machining schematic diagram of elbow after offsetting the machining center line

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图 10 试验平台

Figure 10. Experimental platform

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图 11 不同加工间隙下的弯管内弧的内表面粗糙度

Figure 11. Inner surface roughness of inner arc of elbow under different machining gaps

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图 12 弯管内表面的粗糙度变化曲线

Figure 12. Roughness variation curve of inner surface of elbow

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图 13 间隙调节后弯管的内表面微观形貌

Figure 13. Micro morphology of inner surface of elbow after gap adjustment

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图 14 弯管加工前后的内表面宏观形貌

Figure 14. Inner surface macro view of elbow before and after grinding

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表 1 弯管加工试验参数

Table 1. Experimental parameters of elbow machining

参数	取值
磁性磨料基本颗粒尺寸 d₁ / μm	180
加工间隙 d₂ / mm	1.0，1.5，2.0，2.5，3.0
研磨液体积 V₁ / mL	5
磁极转速 n / (r·min⁻¹)	600
加工时间 t / min	50
进给速度 v_w / (mm·s⁻¹）	1

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