不同送料工艺对液压支架激光熔覆再制造的影响

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Abstract Hydraulic support is an important equipment in fully mechanized coal mining system. Due to the complexity and particularity of the environment, it poses a serious threat to the service life and performance of hydraulic support. In order to improve the wear resistance of hydraulic support column, laser cladding technology is used to repair and strengthen the column surface. In this paper, single layer and multi-layer cladding coatings were prepared on the surface of hydraulic support column by coaxial powder feeding, side shaft powder feeding and wire cladding three feeding process. The mechanical properties of cladding layer with different feeding processes were analyzed. It is found that the order of surface hardness of samples is: coaxial powder feeding sample is larger than side shaft powder feeding sample, and larger than wire cladding sample, and the coating hardness obtained by coaxial powder feeding, side shaft powder feeding and wire cladding is 2.3 times, 2.2 times and 2.1 times of the substrate respectively. The stainless steel cladding layer with excellent properties can be obtained on the surface of column 27SiMn Steel by means of coaxial powder feeding, side axis powder feeding and wire cladding technology. Through the analysis and research of the cladding layer under three different feeding processes, it is found that the comprehensive performance of laser cladding of wire is better than that of powder laser cladding under the same processing parameters. In addition, the utilization rate of laser cladding is higher when repairing large-scale load-bearing equipment.

Key words： laser cladding coaxial powder feeding wire cladding mechanical properties

Published: 09 December 2021

CLC number:

TG178

About author:: Peng Cao, senior engineer of Xi'an Intelligent Remanufacturing Research Institute Co., Ltd. From September 2002 to July 2009, he obtained bachelor's degree and master's degree in material forming and control engineering from Chang'an University. After graduation, he engaged in welding and heat treatment of steel castings and laser cladding process research. A total of 15 national invention patents and utility model patents have been applied, of which 7 are authorized. At present, the research work mainly focuses on the laser cladding technology in the remanufacturing field and the technical development and industrial application of the metal wire.
Beibei Jia, engineer of Xi'an Intelligent Remanufactu-ring Research Institute Co., Ltd. From September 2014 to June 2017, he obtained bachelor's degree and master's degree in advanced materials and preparation technology of Lanzhou University of technology. His research interests focus on the advanced metals with national research priority, and the fundamental theory & application about the advanced processing laser cladding and microstructure & property control. He has published more than 10 journal papers and applied 5 national invention patents.

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	CAO Peng
	LEI Gaofeng
	SU Chengming
	SHU Linsen
	SHI Shuting
	JIA Beibei
	TIAN Weihong

Cite this article:

CAO Peng,LEI Gaofeng,SU Chengming, et al. Influence of Different Feeding Process on Laser Cladding Remanufacturing of Hydraulic Support[J]. Materials Reports, 2021, 35(z2): 424-427.

URL:

http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2021/V35/Iz2/424

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