Research on vertical welding process of arc welding robot

Abstract：The problem of weld formation in vertical welding is the difficulty of automatic welding technology of welding robot, which is easy to produce welding deformation, the welding seam is not fused, and the height is too high.In the welding process, to take effective measures to effectively solve the welding defects, weld forming and welding quality problems.In addition, the correct use of welding fixture also plays an important role in the welding deformation.Opposition of repeated tests to the weld, the welding parameters and welding torch position adjusting constantly, obtain a set of suitable welding process parameters to weld the end, for enterprises to use the automatic welding robot to provide reference and help. .IntroductionWelding is a very important work in industry.In the past, most of them adopt manual upward welding, but there are many disadvantages such as low production efficiency, slow welding speed, high welding cost and high welding strength.Therefore, the new type of automatic welding will become the inevitable trend of future technology development.In this paper, the problem of vertical welding process of arc welding robot is introduced.Through the study of thin vertical down welding welding process to simulate thin-walled pipe welding, using special fixture greatly reduces the problem of sheet metal welding deformation in the welding process, through repeated experiments finally draw a suitable set of vertical welding parameters to welding, welding automation for the enterprise is a vertical pipe connected with the welding reference. .Welding of sheetThe test specimens were selected by Q235B cold rolled steel plate with thickness of 1.5mm.Q235B steel plate is more representative in industrial application, and can be used to simulate the vertical longitudinal seam welding of thin-walled pipe.The chemical composition of the material and self inspection results are shown in Table 1.