Effect of different component active fluxes on surface tension of weld pool in stainless steel

doi:10.12073/j.hjxb.20190911001

	Effect of different component active fluxes on surface tension of weld pool in stainless steel
	Gu, Yufen; Bian, Chunhong; Li, Chunkai; Shi, Yu
刊名	Hanjie Xuebao/Transactions of the China Welding Institution
	2020-06-25
卷号	41 期号:6 页码:48-53
关键词	Calcium alloys Calcium fluoride Chemical activation Electric welding Flow velocity Fluorspar Gas welding Heat transfer Liquid metals Metals Oxide minerals Surface tension Titanium dioxide Welds 304 stainless steel Characteristic frequencies Heat transfer mechanism Oscillating frequencies Physical mechanism Real time measurements Surface tension gradient Welding conditions
ISSN号	0253360X
DOI	10.12073/j.hjxb.20190911001
英文摘要	Acquiring the basic data of the surface tension of molten metal under welding condition is of great significance for understanding the physical mechanism of weld process,such as metal flow behavior, heat transfer mechanism and defect formation.However, real-time measurement is very difficult. The oscillating frequency of weld pool in 304 stainless steel with single component (TiO2 ,CaF2 ) and two component (30%TiO2 + 70%CaF2 , 70%TiO2 + 30%CaF2) activating fluxes was measured by laser-vision method. According to the analytical model of the characteristic frequency and surface tension of the molten metal in a specific mode the surface tension of the molten metal was calculated. The influence of different components of the activating fluxes on the average surface tension of the molten metal is analyzed. Experimental results revealed that TiO2 activating flux can convert the surface tension gradient and change the flow direction of the molten metal. CaF2 activating flux can reduce the absolute value of surface tension and increase the flow velocity of the weld pool. The increase of penetration in two component activating flux is the result of the combination of the increase of the flow velocity of the weld pool and the change of surface tension temperature gradient. Copyright © 2020 Transactions of the China Welding Institution. All rights reserved.
语种	中文
出版者	Harbin Research Institute of Welding
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115022]
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	State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Gu, Yufen,Bian, Chunhong,Li, Chunkai,et al. Effect of different component active fluxes on surface tension of weld pool in stainless steel[J]. Hanjie Xuebao/Transactions of the China Welding Institution,2020,41(6):48-53.
APA	Gu, Yufen,Bian, Chunhong,Li, Chunkai,&Shi, Yu.(2020).Effect of different component active fluxes on surface tension of weld pool in stainless steel.Hanjie Xuebao/Transactions of the China Welding Institution,41(6),48-53.
MLA	Gu, Yufen,et al."Effect of different component active fluxes on surface tension of weld pool in stainless steel".Hanjie Xuebao/Transactions of the China Welding Institution 41.6(2020):48-53.