MILES AXLE Translation. Region: Russian Federation –
Source: Peter the Great St Petersburg Polytechnic University – Peter the Great St Petersburg Polytechnic University –
The staff of the research laboratory “Laser and Additive Technologies” of the Institute of Mechanical Engineering, Materials and Transport of SPbPU successfully completed research work under a contract with the company “Engineering Construction Service”. The specialists analyzed and compared residual deformations of welded joints with different welding methods.
Scientists conducted research on a robotic technological complex for hybrid laser-arc welding. They evaluated different types of welding: laser, hybrid laser-arc, laser with filler wire of samples made of steel grade St3 with a thickness of 10 mm, as well as one-sided and two-sided – manual arc and mechanized semi-automatic in active gases and mixtures.
The main thing in the project is to demonstrate the capabilities of university laboratories in developing innovative technologies for enterprises in the real sector of the economy based on the accumulated experience of the Polytechnic University. Such interaction accelerates the professional development of young scientists and helps to increase the technological sovereignty of the country, – noted the director of the IMMiT Anatoly Popovich.
The specialists conducted a metallographic study of samples obtained using different welding methods and made a comparative analysis of residual deformations using 3D scanning. It turned out that less deformation occurs with hybrid laser-arc welding, and most of all with one-sided manual arc welding.
We have experimentally confirmed the advantages of laser and hybrid laser-arc welding over traditional arc processes. The productivity of the welding process has increased ninefold. The consumption of shielding gas has decreased by 7-9 times, welding wire – by 25-35 times, power consumption – by 2-9 times. Welding deformations have decreased by four times. In other words, using laser welding technologies, it is possible to obtain joints with smaller deformations while reducing the cost of the welding process by 7-10 times, – said Mikhail Kuznetsov, Head of the Research Laboratory “LiAT” of IMMiT.
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Please note; This information is raw content directly from the information source. It is accurate to what the source is stating and does not reflect the position of MIL-OSI or its clients.