ARC welding method for bonding steel with aluminum

doi:10.1007/s11465-009-0033-x

Front Mech Eng Chin

2009, Vol. 4

Issue (2) : 134-146 https://doi.org/10.1007/s11465-009-0033-x

RESEARCH ARTICLE

ARC welding method for bonding steel with aluminum

Zhenyang LU, Pengfei HUANG(

), Wenning GAO, Yan LI, Hanpeng ZHANG, Shuyan YIN

College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China

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Abstract

When welding steel with aluminum, the appearance of intermetallic compounds of Fe and Al will decrease tenacity and increase rigidity, which leads to bad joint performance. A new type of low energy input (LEI) welding technology is introduced which can be used to weld steel with aluminum. Using the technology, brazing was located on the steel side and arc fusion welding on the aluminum side. The less heat input reduces the thickness of intermetallic compounds to 3-4 μm. Tensile strength tests prove that the joint breaks at the heat-affected zone and the strength is higher than 70% of the aluminum’s. Thus, the method can lead to a good performance joint.

Keywords joining of steel and aluminum low energy input welding arc welding fusion welding – brazing

Corresponding Author(s): HUANG Pengfei,Email:huangpf@bjut.edu.cn

Issue Date: 05 June 2009

Cite this article:

Pengfei HUANG,Wenning GAO,Yan LI, et al. ARC welding method for bonding steel with aluminum[J]. Front Mech Eng Chin, 2009, 4(2): 134-146.

URL:

https://academic.hep.com.cn/fme/EN/10.1007/s11465-009-0033-x
https://academic.hep.com.cn/fme/EN/Y2009/V4/I2/134

Fig.1 Fe-Al phase diagram

Tab.1 Physical performance of Fe-Al intermetallics

Fig.2 Block-diagram of LEI arc welding system

Fig.3 Relationship between the wire feeding direction and the welding state

Fig.4 Movement curves of the welding wire. (a) Motion curve; (b) velocity curve

Fig.5 Waveform control project of LEI welding in a short circuiting period

Fig.6 Waveform control method in LEI welding during the arcing period

Fig.7 Waveform control method of LEI welding

Fig.8 Drop transfer of LEI welding

Fig.9 Current and voltage waveforms

Fig.10 　　　　　　　　　
Traditional short-circuit transfer

Fig.11 　　　　　　　　　
Push-pull short-circuit transfer

Fig.12 Force of different short-circuit transfer forms

Fig.13 Schematic diagram of LEI welding

Fig.14 Wave forms of the current and voltage

Fig.15 Weld appearance of Fe-Al welding

Fig.16 Cross section of the weld joint

Fig.17 Photos of interface between galvanized steel and weld metal

Fig.18 Element scan photo of interface between galvanized steel and weld metal

Fig.19 Energy spectrum of interface between galvanized steel and weld metal

Fig.20 Atom percent of the interface between the galvanized steel and the weld metal with different elements

Fig.21 Weld sample of tensile strength test

Fig.22 Tensile strength test of weld joint

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