凸轮轴工作面点蚀坑冷焊再制造工艺与性能研究

doi:10.3976/j.issn.1002-4026.2022.05.006

Abstract

Abstract:

The working surface of a camshaft is easily worn during service, thus seriously affecting the normal operation of the machine. The pitting areas on the working surface of the camshaft were repaired using cold-welding equipment. A metallographic microscope was used to observe the microstructure of the repaired area, and the residual stress distribution and hardness distribution around the repaired areas were determined using an X-ray residual stress tester and a hardness tester, respectively. The results show that the repair welding spot is well combined with the matrix, the carbides precipitated from austenite are dispersed in the matrix structure, the position of the repair welding spot presents the minimum residual stress and the minimum hardness value, and the influence of the repair welding spot on the residual stress and hardness is maintained within around 4 mm of the repaired areas. The camshaft repaired via cold welding meets the service performance requirements.

Key words: cold-welding repair, camshaft, residual stress, hardness

CLC Number:

TG455

SUN Xiu-huai, YIN Zi-qiang, WANG Shou-ren, WANG Lei, WU Cheng-wu, ZHANG Jian-peng, LI Chong-yang. Investigation of cold-welding remanufacturing process and performance of camshaft working surface's pitting corrosion[J].Shandong Science, 2022, 35(5): 46-52.

Figures/Tables 12

Fig.1

Table 1

Fig.2

Table 2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

[1]	王争强, 李文戈, 杜旭, 等. 激光熔覆技术在轴类零件再制造过程中的应用现状[J]. 机械工程材料, 2020, 44(11): 35-40. DOI: 10.11973/jxgccl202011007. doi: 10.11973/jxgccl202011007
[2]	李方义, 李振, 王黎明, 等. 内燃机增材再制造修复技术综述[J]. 中国机械工程, 2019, 30(9): 1119-1127.
[3]	徐滨士, 董世运, 史佩京. 中国特色的再制造零件质量保证技术体系现状及展望[J]. 机械工程学报, 2013, 49(20): 84-90. DOI: 10.3901/JME.2013.20.084. doi: 10.3901/JME.2013.20.084
[4]	WANG H H, LI H J, SHI X H, et al. Repair of SiC coating on carbon/carbon composites by laser cladding technique[J]. Ceramics International, 2020, 46(11): 19537-19544. DOI: 10.1016/j.ceramint.2020.05.005. doi: 10.1016/j.ceramint.2020.05.005
[5]	ZHANG G Q, TONG X, WU G H, et al. Research on the post-weld heat treatment of TIG repair welded joint of sand-cast Mg-Y-RE-Zr alloy[J]. Materials Science and Engineering: A, 2021, 821: 141577. DOI: 10.1016/j.msea.2021.141577. doi: 10.1016/j.msea.2021.141577
[6]	耿仁贤. 热喷涂在内燃机曲轴修复中的应用[J]. 内燃机与配件, 2018(19): 48-49. DOI: 10.19475/j.cnki.issn1674-957x.2018.19.021. doi: 10.19475/j.cnki.issn1674-957x.2018.19.021
[7]	李方义, 戚小霞, 李燕乐, 等. 盾构机关键零部件再制造修复技术综述[J]. 中国机械工程, 2021, 32(7): 820-831. DOI: 10.3969/j.issn.1004-132X.2021.07.009. doi: 10.3969/j.issn.1004-132X.2021.07.009
[8]	HUANG L J, HUA X M, WU D S, et al. A study on the metallurgical and mechanical properties of a GMAW-welded Al-Mg alloy with different plate thicknesses[J]. Journal of Manufacturing Processes, 2019, 37: 438-445. DOI: 10.1016/j.jmapro.2018.12.017. doi: 10.1016/j.jmapro.2018.12.017
[9]	张津超, 石世宏, 龚燕琪, 等. 激光熔覆技术研究进展[J]. 表面技术, 2020, 49(10): 1-11. DOI: 10.16490/j.cnki.issn.1001-3660.2020.10.001. doi: 10.16490/j.cnki.issn.1001-3660.2020.10.001
[10]	秦小钦, 周新鹏, 王广, 等. 冷焊技术在齿轮轴上的修复应用[J]. 内燃机与配件, 2019(16): 156-157. DOI: 10.19475/j.cnki.issn1674-957x.2019.16.071. doi: 10.19475/j.cnki.issn1674-957x.2019.16.071
[11]	徐庆钟, 李方义, 丁韬, 等. HT250冷焊表面残余应力试验[J]. 焊接学报, 2012, 33(10): 33-36.
[12]	陈体磊, 张忠洁, 张志强, 等. 精密脉冲冷焊技术在航空修理中的应用研究[J]. 长沙航空职业技术学院学报, 2019, 19(4):74-77. DOI: 10.13829/j.cnki.issn.1671-9654.2019.04.013. doi: 10.13829/j.cnki.issn.1671-9654.2019.04.013

[1]	WANG Xue-liang, WANG Yong-jie, LIU Li-yan, WANG Rui-guo, ZHANG Chao-yang. Wear resistance of high-Cr cast-iron blade of shot blasting machine with investment casting [J]. Shandong Science, 2021, 34(5): 42-48.
[2]	HUANG Man-Man, JU Zi-Lai, JIANG Li-Kun. Carbon content dependent wear resistance of low-chromium alloy steel [J]. J4, 2013, 26(6): 31-34.

Investigation of cold-welding remanufacturing process and performance of camshaft working surface's pitting corrosion

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 12

References 12

Related Articles 2

Metrics

Comments

Recommended 0