Pulsed Arc Welding Applied to Robotized Joining of Thin Car-Body Steel Sheets

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ABSTRACT

The paper presents the potential of robotized welding applied for thin steel sheets using variable parameters of arc (different welding programs: Standard, Pulse, Twin Pulse, and Speed Pulse). Trial welded joints were made for sheets 0.8 to 1.25 mm thick and relevant welding parameters were selected for them during the first stage of examinations. The properties of welded joints were determined with non-destructive and destructive testing. In turn, visual inspection allowed to evaluate the shape and dimensional conformities of joints and to detect superficial imperfections. In order to improve detection accuracy, penetration testing was used for confirmation purposes. Tensile strength testing was also made to determine mechanical properties of the weld and the heat-affected zone. Metallographic examinations were used for sheets of all thickness values and for all welding programs to verify that the structure of joints was correct. All examinations and tests made on trial joints enabled to find how pulsing arc welding affects quality and strength properties of welds as compared with standard method.

1. Kruczyński M.: Robotized welding process, Mechanical engineering and design, no 1-2/2011, (in polish).

2. Kruczyński M.: Kawasaki, Friendly robotic, friendly welding, Welding of construction materials, no 3/2009, (in polish).

3. Pilarczyk J.: Handbook of Welding Technology, vo.l II, WNT, Warszawa 2005, (in polish)

4. User guide S SpeedPulse, LORCH Schweißtechnik GmbH, 2008, (in polish).

5. Jastrzębski A., Tasak E., Influence of pulsation of the MIG arc on the structure of aluminium alloys welds, Welding Technology Review, no. 7-8, 2009, (in polish).

6. Lange A.: MIG/MAG welding, educational materials of the project “Improving the competitiveness of the automotive industry through staff training”, Wrocław 2008, (in polish).

7. Mizerski J.: MAG and MiG Gas-shielded welding methods, Handbook for welders and welding supervision personnel, REA, Warszawa 2005, (in polish).

8. Kiszka A., Technological properties of low-energy welding methods ColdArc, CMT, AC Pulse and Cold Process, Welding Departments and Institutes symposium ”Modern Applications of welding technology”, Byczyna 2012, (in polish).

9. Klimpel A., Janicki D., Cyroń M., Pulse arc GTA automatic welding process of thin austenitic AISI 321 steel, Welding Technology Review, no. 2-3, 2006, (in polish).

Advances in Materials Science

The Journal of Gdansk University of Technology

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