2.5D Cf /SiC复合材料微尺度磨削试验研究

doi:10.12068/j.issn.1005-3026.2024.08.010

摘要/Abstract

摘要：

为提高2.5D C_f/SiC复合材料在微磨削加工中的表面质量，使用500#金刚石磨粒、直径为0.9 mm的电镀微磨具对其进行3个因素5个水平的微磨削正交试验.通过极差与方差分析微磨削速度v_s、磨削深度a_p和进给速度v_w对磨削性能评价参数（磨削力、表面粗糙度、表面形貌）影响的主次顺序；通过不同水平下的试验结果分析磨削性能评价参数随工艺参数的变化规律.结果表明，磨削深度对磨削性能影响最大，进给速度影响最小；当增大磨削深度与进给速度时，表面粗糙度及磨削力逐渐增大，表面缺陷较多；当增大微磨削速度时，表面粗糙度及磨削力逐渐减小，表面形貌平整均匀，缺陷较少.

关键词: 2.5D C_f/SiC复合材料, 微磨削, 磨削力, 表面粗糙度, 表面形貌

Abstract:

In order to improve the surface quality of 2.5D C_f/SiC composites in micro?grinding， a three?factor and five?level micro?grinding orthogonal experiment was carried out with 500# diamond abrasive and 0.9 mm diameter electroplated micro?grinder. The influence of micro?grinding speed v_s， grinding depth a_p and feed speed v_w on the grinding performance evaluation parameters （grinding force， surface roughness and surface morphology） was analyzed by range and variance. The variation law of grinding performance evaluation parameters with process parameters was analyzed through the test results at different levels. The results showed that the grinding depth has the greatest influence on grinding performance， and the feed speed has the least influence. When the grinding depth and feed speed increase， the surface roughness and grinding force gradually increase， and there are more surface defects； when the micro?grinding speed is increased， the surface roughness and grinding force gradually decrease， the surface morphology is flat and uniform， and there are fewer defects.

Key words: 2.5D C_f/SiC composite, micro?grinding, grinding force, surface roughness, surface topography

中图分类号:

TH 161

李远峰, 温泉, 巩亚东, 唐本甲. 2.5D C_f/SiC复合材料微尺度磨削试验研究[J]. 东北大学学报（自然科学版）, 2024, 45(8): 1143-1149.

Yuan-feng LI, Quan WEN, Ya-dong GONG, Ben-jia TANG. Experimental Study on Micro-scale Grinding of 2.5D C_f/SiC Composites[J]. Journal of Northeastern University(Natural Science), 2024, 45(8): 1143-1149.

图/表 14

参考文献 15

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参数	数值
抗拉强度/MPa	280
抗弯强度/MPa	220
密度/(g·cm^-3)	2.0
纤维直径/μm	7
碳纤维体积分数/%	37

参数	数值
抗拉强度/MPa	280
抗弯强度/MPa	220
密度/(g·cm^-3)	2.0
纤维直径/μm	7
碳纤维体积分数/%	37

因素	水平
因素	1	2	3	4	5
v_s/(m·s^-1)	0.471	0.942	1.414	1.885	2.356
a_p/μm	3	6	9	12	15
v_w/(μm·s^-1)	20	70	120	170	220

因素	水平
因素	1	2	3	4	5
v_s/(m·s^-1)	0.471	0.942	1.414	1.885	2.356
a_p/μm	3	6	9	12	15
v_w/(μm·s^-1)	20	70	120	170	220

试验序号	v_s	a_p/μm	v_w	F_n/N	F_t/N	R_a/μm
试验序号	m·s^-1	a_p/μm	μm·s^-1	F_n/N	F_t/N	R_a/μm
1	0.471	3	20	0.420	0.327	1.014
2	0.471	6	70	0.598	0.425	1.316
3	0.471	9	120	0.818	0.561	1.729
4	0.471	12	170	0.985	0.675	2.091
5	0.471	15	220	1.231	0.830	2.613
6	0.942	3	70	0.458	0.341	1.056
7	0.942	6	120	0.604	0.433	1.323
8	0.942	9	170	0.796	0.582	1.810
9	0.942	12	220	0.889	0.632	1.962
10	0.942	15	20	1.026	0.703	2.183
11	1.414	3	120	0.503	0.355	1.125
12	1.414	6	170	0.618	0.441	1.367
13	1.414	9	220	0.788	0.560	1.742
14	1.414	12	20	0.806	0.568	1.761
15	1.414	15	70	0.931	0.654	2.024
16	1.885	3	170	0.486	0.348	1.079
17	1.885	6	220	0.524	0.377	1.165
18	1.885	9	20	0.716	0.511	1.585
19	1.885	12	70	0.801	0.559	1.736
20	1.885	15	120	0.928	0.663	2.051
21	2.356	3	220	0.438	0.315	0.971
22	2.356	6	20	0.481	0.334	1.034
23	2.356	9	70	0.695	0.498	1.542
24	2.356	12	120	0.808	0.575	1.784
25	2.356	15	170	0.912	0.647	2.005