Melting and Transfer Behaviours of Filler Wire Acted by a Laser Heat Source

	Melting and Transfer Behaviours of Filler Wire Acted by a Laser Heat Source
	Su, G.-X.2; Shi, Y.1,2; Zhu, M.1,2; Zhang, G.1
刊名	Lasers in Engineering
	2022
卷号	52 期号:1 页码:17-36
关键词	Fillers High power lasers High speed cameras Laser beams Laser cladding Melting Semiconductor lasers Wire Deposition layers E501t-1 low alloy steel filler wire Filler wire High power diode laser Liquid bridge Low-alloy steel Melting mechanism Q235 carbon steels Transfer behavior Transfer modes
ISSN号	0898-1507
英文摘要	Laser cladding with filler wire is a cost-competitive approach over powder- based feeding systems; however, the practical application of it in the industry has been limited seriously because of the complicated interaction between the laser and the wire. Single clad deposition of E501T-1 low alloy steel filler wire was made on 4 mm thick Q235 carbon steel substrate using a large-sized spot high power diode laser (HPDL) laser. The typical position relationships of the laser beam and the filler wire were calibrated by mathematical calculation firstly. Then the process maps indicating the melting mechanics of filler wire and the stable cladding process at different cladding conditions were developed. Lastly, based on the high speed camera system, the relationships between the melting and transfer behaviours of filler wire and the formation of deposition layer were revealed. The results showed that there were two typical melting mechanisms of filler wire. And the transfer behaviours of liquid metal could be decomposed into large droplet transfer, liquid-bridge transfer, and spreading transfer mode. The stable cladding process and well-formed deposition layer could be obtained while liquid metal was transferred into the molten pool with a liquid-bridge. Comparing with other laser-wire positions, the laser energy and filler wire interacted with each other more sufficiently and the liquid bridge transfer mode could be formed in a larger process window while the filler wire was partially covered by the laser beam. The most ideal distance between the laser beam and filler wire was zero. © 2022 Old City Publishing. All rights reserved.
语种	英语
出版者	Old City Publishing
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158433]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.State Key Laboratory of Advanced Processing and Recycling Non-ferrous Metals, Lanzhou University of Technology, 287# Langongping Road, Qilihe District, Gansu Province, Lanzhou; 730050, China 2.School of Materials Science and Engineering, Lanzhou University of Technology, 287# Langongping Road, Qilihe District, Gansu Province, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Su, G.-X.,Shi, Y.,Zhu, M.,et al. Melting and Transfer Behaviours of Filler Wire Acted by a Laser Heat Source[J]. Lasers in Engineering,2022,52(1):17-36.
APA	Su, G.-X.,Shi, Y.,Zhu, M.,&Zhang, G..(2022).Melting and Transfer Behaviours of Filler Wire Acted by a Laser Heat Source.Lasers in Engineering,52(1),17-36.
MLA	Su, G.-X.,et al."Melting and Transfer Behaviours of Filler Wire Acted by a Laser Heat Source".Lasers in Engineering 52.1(2022):17-36.