交变磁场对高硬熔覆层成型质量的影响

doi:10.11896/j.issn.1005-023X.2018.06.010

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Abstract The addition of auxiliary alternating magnetic field is effective for improving the forming quality of high hardness cladding layer by laser cladding. A kind of simple mechanical sine wave electromagnetic field generator with adjustable frequency and amplitude modulation was designed. In the process of laser cladding, a class of sinusoidal alternating magnetic field was applied. By changing the magnetic field strength and frequency, single channel and multi-channel high hardness cladding layer were prepared on the Q235A surface. Based on the detection of macro and micro measurement of cladding layer. The effects of alternating magnetic field on the geometric characteristics, dilution rate and microstructure of the cladding layer were studied. Research results showed that when the magnetic field frequency and amplitude changed, the width fluctuation range of cladding layer was very narrow, and the average remained unchanged. The height and the contact angle of the cladding layer would decrease with the increase of the magnetic field intensity. The dilution rate was not affected by the parameters variation of the magnetic field. In the magnetic field, the hole in cladding layer would migrate to the surface of the cladding layer, the microstructure of cladding layer was more uniform and compact.

Key words： laser cladding alternating magnetic field high hardness clad layer geometrical characteristic microstructure

Published: 25 March 2018

CLC number:

TG174

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	Articles by authors
	ZHENG Lijuan
	FU Yuming
	ZONG Lei
	QI Tong

Cite this article:

ZHENG Lijuan,FU Yuming,ZONG Lei, et al. Effect of Alternating Magnetic Field on the Forming Quality of High Hardness Clad Layer[J]. Materials Reports, 2018, 32(6): 905-908.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.06.010 OR http://www.mater-rep.com/EN/Y2018/V32/I6/905

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