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Laser welding assisted by a cold filler wire (LWCFW) and hybrid lasergas metal arc (HLGMA) welding were applied to execute the welding of 6.63-mm-thick high-strength steel (HSS) plates. The corresponding hardness distribution, tensile strength, and ...
A feasibility study was designed in order to study the effect of various laser welding process parameters (such as laser power levels and welding speeds) on weld quality. Three regression models were developed to find the best fit model that relates process parameters to the shear load of the weld.
A literature review on CO2 laser welding 372 absorption mainly taken place at the top of the key hole.Kurosaki, Y et al. have innovated CO2 laser welding method for overlapped welding of PFA polymer film sheet. The procedure feasibility was confirmed by the
A study on bead-on-plate welding of AA7075 using low power fiber laser 2067 grinding, polishing and etching processes. The etching process was very important in order to reveal the microstructure of AA7075. Kellers Reagent solution was used for the etching
In this study, a successive double sided laser beam welding process was used to join dissimilar aluminum alloys, AA2024-O and AA7075-T6 using a low power Yb-fiber laser
However, in laser welds, porosity can also result from laser keyhole instability and collapse during partial penetration high-power laser welding. [5] Laser welding is shielded using an inert gas shield, and if this shielding is not adequate (due to either too high or too low gas flow rate) then porosity can result.
26/1/2017· 2. Janasekaran S, Tan AW, Yusof F, Abdul Shukor M (2016) Feasibility study of low power fiber laser welding AA2024 and AA7075 alloys T-joint. 13. Kurakake Y, Farazila Y, Miyashita Y, Otsuka Y, Mutoh Y (2013) Effect of molten pool shape on tensile shear ...
High power CO 2 lasers are predominantly used for the welding of automotive components, such as gears and transmission components, which require circular and annular welds and in tailored blank applications. The majority of lasers have a power of 6kW or less. ...
Abstract: Dissimilar aluminum alloys, AA2024-0 and AA7075-T6 were laser welded on both sides in a T-joint configuration using a low power fiber laser. The effect of welding speed (9, 12, 15, 18 and 21 mm/s) on weldability was evaluated at laser power of 270W with ...
Of the available welding techniques, high power fiber laser welding has recently received much attention because of the significant advantages such as high energy density with low heat input, high degree of automation, high production rate, high beam quality and4
6/1/2011· In order to solve these issues, a low-cost laser-based vision system is developed in this study to achieve the weld quality inspection efficiently. In order to satisfy the demand for weld quality inspection in industrial environment, a Gigabit Ethernet (GigE) industrial ...
8/11/2016· In this study, a successive double sided laser beam welding process was used to join dissimilar aluminum alloys, AA2024-O and AA7075-T6 using a low power Yb-fiber laser in a T-joint configuration without additions of filler materials. The influence of welding speeds ...
Feasibility Study of Low Power Fiber Laser Welding AA2024 and AA7075 Alloys T-Joint Authors: Shamini Janasekaran, Ai Wen Tan, Farazila Yusof, Mohd Hamdi Abdul Shukor Abstract: Dissimilar aluminum alloys, AA2024-0 and AA7075-T6 were laser welded on both sides in a T-joint configuration using a low power fiber laser.
In this investigation, an attempt was made to study the effect of laser welding process by evaluating the metallurgical and mechanical properties of SA516 grade 70 high strength low alloy steel joints without any weld preheat treatment. The following conclusions
In this feasibility study, 99.999% artificial sapphire; a type of ceramic consists of Al2O3 was bonded using low power Ytterbium fiber laser to Inconel 600. An active filler alloy (Cusil ABA) ...
Research began with AA2198 and a feasibility study of laser beam welding. They also prepared riveted specimens made of AA2024 that underwent micromechanical and microstructural testing for comparison with the welded samples. ...
Stewart Williams is the Director of the Welding Engineering and Laser Processing Centre. Background Prior to commencing at Cranfield University Professor Williams was at BAE Systems Advanced Technology Centre for nearly 20 years.
The first 100-W-class diffraction-limited fiber laser was introduced by IPG in 2000 using its basic multifiber side- coupling technology (see Fig. 2). With its high brightness, this laser can be used in welding, sintering, and low-power brazing applications.
Cladding-pumping enables the use of high-power, low-cost, laser-diodes to pump the fibres. A cladding-pumped fibre has an inner core doped with the chosen rare earth element. The inner core is surrounded by an inner cladding with a lower refractive index, so
21/2/2020· In this study, a single-mode continuous-wave fibre laser was used in butt welding of Ti-6Al-4V to Inconel 718. Investigations including metallurgical and mechanical examinations were carried out by means of varying processing parameters, such as laser power
Abstract Joining ceramic to metal has become essential in many industries as the usage increased intensely. In this feasibility study, 99.999% artificial sapphire; a type of ceramic consists of Al 2 O 3 was bonded using low power Ytterbium fiber laser to Inconel 600. was bonded using low power Ytterbium fiber laser to Inconel 600.
1/7/2016· Study of Forging Process of Yttrium-Modified A356 Aluminum Alloy and Numerical Simulation by Thermo-Viscoplastic Finite Element Method p.177 Feasibility Study of Low Power Fiber Laser Welding AA2024 and AA7075 Alloys T p.182 Effect of Rolling ...
space [5, 8-11] compared with a laser module. A low cost system is developed in this paper to study the feasibility on the online measurement of 3 DOFs of the PWS in the butterfly-type laser module packaging process. 2. Mechanism of the Displacement
In 2011, Katayama et al. [21] performed a high power disc laser welding experiment on 304 stainless steel and A5052 aluminum using a new chamber for laser welding under vacuum achieved by using rotary pumps. Sound deep single pass weld of 73 mm in
MF120 is a simultaneous multi-fiber laser welding machine ideal to realize both laboratory welding tests or mass-production of small parts. It can be equipped up to 12 laser sources and it is available with different power sizes: 150, 300, 450 and 600 W. The air ...
1/7/2016· Dissimilar aluminum alloys, AA2024-0 and AA7075-T6 were laser welded on both sides in a T-joint configuration using a low power fiber laser. The effect of welding speed (9, 12, 15, 18 and 21 mm/s) on weldability was evaluated at laser power of 270W with argon ...
In this paper, we describe influence of heat input on HAZ liquation cracking in laser welded GH909 alloy. The results demonstrated that more cracks were produced using high laser power and welding speed. The presence of cracks greatly weakened the hot ductility ...
