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ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

International Heat Transfer Conference 13
August, 13-18, 2006, Sydney, Australia

ANALYSIS OF TEMPERATURE DISTRIBUTION AND PLASTIC FLOW DURING SPOT FRICTION STIR WELDING

Get access (open in a dialog) DOI: 10.1615/IHTC13.p13.30
8 pages

要約

Friction Stir Welding (FSW) is a new metal-joining process, and a numerical simulation code to calculate optimal welding conditions is desired. In this paper, we analysed temperature distribution and plastic flow during spot friction stir welding (SFW) process using a particle method. Calculation results indicate that, for the case of a rotating tool without a pin, heat is generated near the shoulder of the rotating tool and the temperature distribution is almost circler pattern. Materials of metal plates are mixed below the rotating tool by the effect of movement of the rotating tool. Metals near the outside of the rotating tool protrude by the effect of plunging force of the rotating tool. When the rotating tool has a pin, almost all region below the rotating tool is high temperature and the mixing of two metal plates is strong by the effect of the pin. These calculation results are similar to experimental results. Mixing of metals is examined by changing parameter of the SFW process conditions. When the rotating speed is high, the mixing of two metal plates is strong. The effect of the tool moving-down speed is small. The relations among process conditions can be used to find the optimal welding conditions.