Study on Repairing Technologies and Repairing Experiment by Electro-Brush Plating of Camshaft

2018 International Conference on Advanced Electronic Materials, Computers and Materials Engineering

材料科学;无线电电子学;计算机科学

Wang, Hongyun^1 ; Chen, Senchang^1 ; Xiang, Ying^2

School of Automotive and Transport Engineering, Guangdong Polytechnic Normal University, Guangzhou, Guangdong

510665, China^1

Industrial Training Center, Guangdong Polytechnic Normal University, Guangzhou, Guangdong

510665, China^2

关键词: Bonding strength;    Coating surface morphologies;    Electro brush plating;    Plating solutions;    Repairing technologies;    Surface failure;    Surface hardness;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/439/2/022010/pdf
DOI  :  10.1088/1757-899X/439/2/022010

来源: IOP

【 摘 要 】

The surface failure of engine camshaft was introduced. The surface repairing technologies of failure camshaft such as thermal spraying, laser cladding and electro-brush plating were analyzed comparatively. The characteristics of the process of repairing camshaft by electro-brush plating technology were introduced. The effects of plating solutions of rapid nickel, Ni-Co, Ni-Wu and nano Al2O3/Ni on surface properties of camshaft coatings were experimentally studied. It is concluded that the electro-brush plating technology can be applied to repair failure camshafts due to simple equipment, fast repairing speed and high bonding strength between substrate and coatings. The surface morphology of the nano Al2O3/Ni coating is the most uniform and compact, and the hardness of the coating is higher than substrate's. The hardness of the rapid nickel coating is the highest, but the coating surface morphology is relatively coarse and uneven. Nano particles have a significant refining effect on coatings. Using nano Al2O3/Ni electro-brush plating technology to repair surface failure camshaft can improve surface hardness and make it remanufactured and utilized.