304不锈钢的微弧等离子体放电抛光机理与试验研究

赵智渊; 贾祯; 刘旭; 麻高领; 李淑娟

doi:10.13433/j.cnki.1003-8728.20230191

304不锈钢的微弧等离子体放电抛光机理与试验研究

doi: 10.13433/j.cnki.1003-8728.20230191

赵智渊^1,,
贾祯¹,
刘旭¹,
麻高领²,
李淑娟^1, ,

1.
西安理工大学机械与精密仪器工程学院，西安　710048
2.
西安机电信息技术研究所，西安　710065

基金项目: 国家自然科学基金项目（51575442）与陕西省重点研发项目（2021GY-275）

详细信息

作者简介:
赵智渊（1966−），工程师，本科，研究方向为先进制造技术， 734230425@qq.com

通讯作者:
李淑娟，教授，博士生导师，shujuanli@xaut.edu.cn

中图分类号: TH16
计量
- 文章访问数: 105
- HTML全文浏览量: 128
- PDF下载量: 30
- 被引次数: 0
出版历程
- 收稿日期: 2021-12-06
- 刊出日期: 2023-06-25

Mechanism and Experimental Study on Micro-arc Plasma Discharge Polishing of 304 Stainless Steel

1.
School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, China
2.
Xi'an Institute of Electromechanical Information Technology, Xi'an 710065, China

摘要

摘要: 针对目前用于抛光不锈钢的方法普遍存在抛光质量差、抛光效率低以及环境污染严重的问题，本文以304不锈钢为加工对象，将电化学加工与放电加工相结合，提出了微弧等离子体放电抛光方法。基于电化学理论和流注理论对微弧等离子体放电抛光机理进行了研究。通过设计正交试验并采用田口分析法和方差分析法对试验结果进行了分析，找到了关于材料去除率和表面粗糙度的优化参数组合并进行了试验验证。结果表明，电源电压、抛光时间和电解液温度对材料去除率具有显著影响，抛光时间和电源电压对表面粗糙度具有显著影响。微弧等离子体放电抛光304不锈钢的材料去除率最大可以达到11.73 μm/min，表面粗糙度最小可以达到29.1 nm。
- 304不锈钢 /
- 等离子体 /
- 抛光机理 /
- 表面粗糙度
Abstract: For the poor polishing quality, low polishing efficiency and serious environmental pollution in polishing of stainless steel via current methods, the micro-arc plasma discharge polishing method in the polishing of 304 stainless steel was proposed by combining the electrochemical processing with electrical discharge machining. The mechanism in the micro-arc plasma discharge polishing was studied based on the electrochemical and streamer theories. By planning the orthogonal tests and analyzing the testing results with Taguchi analysis and ANOVA, the optimal parameters by considering the material removal rate and surface roughness was obtained and verified through the experimental results. The results show that the voltage, polishing time and electrolyte temperature have the significant effects on the material removal rate, and the polishing time and voltage have the significant effects on the surface roughness. The maximum material removal rate in the micro-arc plasma discharge polishing of 304 stainless steel can reach 11.73 μm/min, and the minimum surface roughness can reach 29.1 nm.
- 304 stainless steel /
- plasma /
- polishing mechanism /
- surface roughness

HTML全文

图 1 微弧等离子体放电抛光装置示意图与实物图

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图 2 微弧等离子体放电抛光过程示意图

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图 3 等离子体放电通道的产生过程^[12]

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图 4 微弧等离子体放电抛光304不锈钢

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图 5 MRR的均值主效应图

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图 6 S_a的均值主效应图

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图 7 304不锈钢抛光前、后实物照片、表面粗糙度、扫描电镜图以及EDS分析

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图 8 不同抛光方法的对比图^[15]

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表 1 试验因素及水平

因素	水平
因素	1	2	3	4	5
电源电压U/V	200	250	300	350	400
电解液浓度C/%	2	3	4	5	6
电解液温度T/℃	50	60	70	80	90
抛光时间t/min	0.5	2	5	10	20
注：电解液浓度即为电解液质量分数，下同。

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表 2 试验数据及结果

序号	U/V	C/%	T/℃	t/min	S_a/μm	MRR/(μm·min⁻¹)
1	200	2	50	0.5	0.143	10.07
2	200	3	60	2	0.072	7.57
3	200	4	70	5	0.060	4.88
4	200	5	80	10	0.056	3.78
5	200	6	90	20	0.059	2.90
6	250	2	60	5	0.043	4.37
7	250	3	70	10	0.045	3.78
8	250	4	80	20	0.057	3.03
9	250	5	90	0.5	0.149	6.72
10	250	6	50	2	0.080	5.89
11	300	2	70	20	0.039	2.44
12	300	3	80	0.5	0.129	6.73
13	300	4	90	2	0.076	5.04
14	300	5	50	5	0.043	5.88
15	300	6	60	10	0.032	2.52
16	350	2	80	2	0.075	2.31
17	350	3	90	5	0.083	2.02
18	350	4	50	10	0.035	2.69
19	350	5	60	20	0.041	1.64
20	350	6	70	0.5	0.137	5.04
21	400	2	90	10	0.085	0.56
22	400	3	50	20	0.042	0.51
23	400	4	60	0.5	0.140	5.04
24	400	5	70	2	0.114	2.10
25	400	6	80	5	0.125	1.51

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表 3 MRR的均值响应表

水平	电压U/V	浓度C/%	温度T/℃	时间t/min
1	5.840	3.950	5.008	6.720
2	4.758	4.122	4.228	4.582
3	4.522	4.136	3.648	3.732
4	2.740	4.024	3.472	2.666
5	1.944	3.572	3.448	2.104
Δ	3.896	0.564	1.560	4.616
排秩	2	4	3	1

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表 4 MRR的方差分析结果

因素	自由度	平方和	均方和	F值	P值	贡献率/%
电压	4	50.199	12.5496	22.57	0.000	38.49
浓度	4	1.060	0.2649	0.48	0.753	0.81
温度	4	8.839	2.2097	3.97	0.046	6.78
时间	4	65.878	16.4695	29.62	0.000	50.51
误差	8	4.448	0.5560			3.41
合计	24					100

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表 5 S_a的均值响应表

水平	电压U/V	浓度C/%	温度T/℃	时间t/min
1	0.07800	0.07700	0.06860	0.13960
2	0.07480	0.07420	0.06560	0.08340
3	0.06380	0.07360	0.07900	0.07080
4	0.07420	0.08060	0.08840	0.05060
5	0.10120	0.08660	0.09040	0.04760
Δ	0.03740	0.01300	0.02480	0.09200
排秩	2	4	3	1

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表 6 S_a的方差分析结果

因素	自由度	平方和	均方和	F值	P值	贡献率/%
电压	4	0.003819	0.000955	5.24	0.023	10.57
浓度	4	0.000574	0.000143	0.79	0.565	1.59
温度	4	0.002521	0.000630	3.46	0.064	6.98
时间	4	0.027748	0.006937	38.06	0.000	76.82
误差	8	0.001458	0.000182			4.04
合计	24					100

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表 7 试验验证条件及结果

U/V	C/%	T/℃	t/min	MRR/(μm·min⁻¹)	S_a/nm
200	4	50	0.5	11.73
300	4	60	20		29.1

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