Optimization of Welding Parameters in CMT Welding of Al 5083

2021 ◽  
pp. 663-672
Author(s):  
S. Suryaprakash ◽  
S. Vishal ◽  
M. Sethu Raman ◽  
S. Rajendra Kumar ◽  
M. Umar ◽  
...  
Keyword(s):  
Welding Parameters ◽  
Cmt Welding

Cold Metal Transfer Welding of AA6061 to AA7075: Mechanical Properties and Corrosion

2019 ◽  
Vol 141 (3) ◽  
Author(s):  
Nilay Çömez ◽  
Hülya Durmuş
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Heat Input ◽  
Dissimilar Materials ◽  
Metal Transfer ◽  
Welding Parameters ◽  
Cold Metal Transfer ◽  
Cmt Welding ◽  
Mechanical Properties And Corrosion ◽  
Cold Metal

Cold metal transfer (CMT) welding provides many advantages for welding of dissimilar materials and thin sheets with its superior heat input control mechanism. In this study, AA6061 and AA7075 aluminum alloys were joined with CMT welding. The effect of welding parameters on hardness, tensile strength, and corrosion rate was investigated. The Tafel extrapolation method was carried out to determine the corrosion rates of AA6061 and AA7075 base metals and AA6061–AA7075 joints. Increasing heat input was found to be detrimental for both mechanical properties and corrosion resistance. The outcomes showed that CMT welding produces adequate joints of AA6061–AA7075 in terms of mechanical properties and corrosion resistance, favorably with welding parameters that provide low heat input.

Study on CMT Welding of Stainless Steel Railway Vehicle Body

2014 ◽  
Vol 936 ◽  
pp. 1769-1774
Author(s):  
Wen Quan Wang ◽  
Qing Liang Meng ◽  
Li Yuan Niu
Keyword(s):  
Stainless Steel ◽  
Orthogonal Experiment ◽  
Welding Process ◽  
Vehicle Body ◽  
Good Effect ◽  
Welding Parameters ◽  
Railway Vehicle ◽  
Cold Metal Transfer ◽  
Optical Micrograph ◽  
Cmt Welding

Abstract. Cold metal transfer (CMT) process is a modified inert gas metal welding process,which characterizes of low heat input and no spatter welding comparing with traditional GMAW process.In this paper,research of the CMT welding features of stainless steel sheet has been conducted.The effects of welding parameters including wire feed rate,welding speed and arc-length modification coefficient on mechanical properties and surface morphology were investigated.In addition,optical micrograph(OM) and scanning electron microscope(SEM) were used to analyze the weld microstructure,and microstructural characteristics were discussed as well.In the end,the optimum welding parameters which were used in real production and achieved good effect were obtained by means of orthogonal experiment.

scholarly journals Investigations on the Dissimilar Metal Joints Capability between Aluminum Alloy and Steel under CMT Welding

2018 ◽  
Vol 228 ◽  
pp. 04007 ◽  
Author(s):  
Chen Chen ◽  
Chenhao Gao ◽  
Yanfeng Xing
Keyword(s):  
Aluminum Alloy ◽  
Power Plants ◽  
Thin Sheet ◽  
Welding Current ◽  
Welding Parameters ◽  
Cold Metal Transfer ◽  
Welding Seam ◽  
Welding Joint ◽  
Cmt Welding ◽  
Warp Deformation

Sustainable lightweight vehicle design has becoming a key trend in the future. A new way to join aluminum alloys and steel sheet. Cold metal transfer (CMT) welding of thin sheet metal products. Determination of equilibrium wire-feed-speeds welding-speeds and arc length. Seam formation and microstructure of CMT were researched. Not only that, but optimum welding parameters were analyzed. Study of welding joint microstructure of compound layer on welding joint. Comparing the steel side of welding seam. The aluminum alloy siding grain size was larger. After tensile test, joint was fractured on the aluminum alloy side. Warp deformation occurred on aluminum side. Displacement of warp deformation became larger along with the increase of welding current. The results reviewed in this article indicate that the aluminum alloy fractured is more preferable to steel. CMT welding has found applications in automobile industries, defence sectors and power plants as a method of additive manufacturing.

scholarly journals Optimization of welding parameters in CMT welding of Al 5083 alloys using VIKOR optimization method

2020 ◽  
Vol 912 ◽  
pp. 032035
Author(s):  
A P Aravind ◽  
S Suryaprakash ◽  
S Vishal ◽  
M Sethuraman ◽  
T Deepan Bharathi Kannan ◽  
...  
Keyword(s):  
Optimization Method ◽  
Welding Parameters ◽  
Cmt Welding

scholarly journals CMT Welding of Titanium and Stainless Steel Using CuSi3 Electrode

2019 ◽  
Vol 67 (1) ◽  
pp. 147-153
Author(s):  
Nela Poláková ◽  
Petr Dostál
Keyword(s):  
Stainless Steel ◽  
Fusion Welding ◽  
Gas Absorption ◽  
Protective Atmosphere ◽  
Metallographic Analysis ◽  
Welding Parameters ◽  
Additional Material ◽  
Measurement Results ◽  
Cmt Welding

The article deals with the possibility of a tight permanent joint of X5CrNi 18–10 austenitic steel and UNS N50400 titanium. The nuclear and chemical industries are in particular interested in solving this problem. The joining by means of fusion welding has come up against unreliability due to the formation of brittle intermetallic compounds between titanium and iron. The article deals with joining of these two heterogeneous materials by an innovative CMT welding method. CuSi3 soldering electrode was chosen as the additional material. Protective atmosphere consisting of clean argon has been chosen due to the undesirable gas absorption by titanium at temperatures over 600 °C. The results will compare different welding parameters and their impact on the quality of the weld joint. The quality of the created welds will be verified on the basis of the tensile test and the results will be graphically visualized. The microhardness in the weld and its surroundings will be measured. The microhardness measurement results will be graphically displayed. The experimental results will be supplemented by macrostructure snapshots and metallographic analysis snapshots.

Effects of bottom plate in friction stir welding of AA6061-T6

2020 ◽  
Vol 118 (1) ◽  
pp. 108
Author(s):  
M.A. Vinayagamoorthi ◽  
M. Prince ◽  
S. Balasubramanian
Keyword(s):  
Mechanical Properties ◽  
Axial Load ◽  
Weld Zone ◽  
Welding Process ◽  
Bottom Plate ◽  
Welding Parameters ◽  
Nugget Zone ◽  
Friction Stir ◽  
Weld Joints ◽  
Fine Grain

The effects of 40 mm width bottom plates on the microstructural modifications and the mechanical properties of a 6 mm thick FSW AA6061-T6 joint have been investigated. The bottom plates are placed partially at the weld zone to absorb and dissipate heat during the welding process. An axial load of 5 to 7 kN, a rotational speed of 500 rpm, and a welding speed of 50 mm/min are employed as welding parameters. The size of the nugget zone (NZ) and heat-affected zone (HAZ) in the weld joints obtained from AISI 1040 steel bottom plate is more significant than that of weld joints obtained using copper bottom plate due to lower thermal conductivity of steel. Also, the weld joints obtained using copper bottom plate have fine grain microstructure due to the dynamic recrystallization. The friction stir welded joints obtained with copper bottom plate have exhibited higher ductility of 8.9% and higher tensile strength of 172 MPa as compared to the joints obtained using a steel bottom plate.

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