仿生条纹形磨辊磨损试验及耐磨机理分析

doi:10.13229/j.cnki.jdxbgxb20170955

Abstract

Abstract:

In order to improve the wear resistance of grinding roller, imitating the form of biological surface morphology in nature, we designed and machined the bionic stripe structure with different depths and different circumferential numbers on the surface of the roller. The wear test of the grinding roller was carried out according to the design scheme of orthogonal test. The results show that the bionic stripe structure can effectively improve the wear resistance of the roller. Both the stripe depth and the number of stripe circumferences influence the wear amount. Compared with the standard roller, the maximum wear resistance of the bionic grinding roller increases by 72.1%. Analysis of the wear resistance mechanism of bionic grinding roller suggests that, the stripe structure makes the grinding roller contact with the quartz sand more fully and evenly, and the slippery grinding probability of quartz sand reduces on the roller surface at the same time, thus the overall and local stress conditions of the grinding roller are optimized, which is an important reason to improve the wear resistance of the roller.

Key words: engineering bionics, wear resistance, wearing test, grinding roller, stripe shape

CLC Number:

TH69

XI Peng,CONG Qian,WANG Qing-bo,GUO Hua-xi. Wear test and anti-friction mechanism analysis of bionic stripe grinding roll[J].Journal of Jilin University(Engineering and Technology Edition), 2018, 48(6): 1787-1792.

Figures/Tables 7

Fig.1

Fig.2

Table 1

Testing program and result analysis"

因素序号	条纹深度H/mm	条纹个数N/个	y_总/g
1	0.6	60	5.78
2	0.6	70	7.105
3	0.6	80	5.68
4	0.8	60	4.26
5	0.8	70	6.925
6	0.8	80	10.145
7	1.0	60	2.67
8	1.0	70	3.675
9	1.0	80	7.04
10	0	0	9.57
$y - j 1$	6.19	4.24	$∑ i = 1 9 y i = 62.94$
$y - j 2$	7.11	5.90
$y - j 3$	4.46	7.62
$R j$	2.65	3.39
主次因素	N(条纹个数),H(条纹深度)
最优组合	H₃N₁

Table 1

Fig.3

Fig.4

Fig.5

Fig.6

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Wear test and anti-friction mechanism analysis of bionic stripe grinding roll

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