29-07-2015, 06:16 PM
hello CAN YOU HELP ME WITH ANSYS APDL FRICTION STEER WELDING???
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friction stir welding ppt pdf
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hello CAN YOU HELP ME WITH ANSYS APDL FRICTION STEER WELDING???
05-04-2017, 02:19 PM
Friction stir welding (FSW) is a solid state bonding process that uses a non-consumable tool to join two work pieces that face without melting the workpiece material. The heat is generated by friction between the rotating tool and the workpiece material, which leads to a smoothed region near the FSW tool. While the tool is traversed along the joining line, it mechanically intermixes the two pieces of metal, and forges the hot and smoothed metal by the mechanical pressure, which is applied by the tool, as do the joining of the clay, or mass. It is mainly used in forged or extruded aluminum and particularly for structures which require a very high weld resistance. It was invented and tested experimentally at the Welding Institute (TWI) in the United Kingdom in December 1991. TWI held patents on the process, the first being the most descriptive.
Operating principle
A rotating cylindrical tool with a profiled probe is fed into a stop link between two clamped workpieces, until the rim, which has a larger diameter than the pin, touches the surface of the workpieces. The probe is slightly shorter than the required weld depth, with the tool shoulder on the work surface. After a short residence time, the tool moves forward along the attachment line to the pre-set welding speed.
Heat of friction is generated between the wear-resistant tool and the workpieces. This heat, together with that generated by the mechanical mixing process and the adiabatic heat inside the material, cause the agitated materials to melt without melting. As the tool moves forward, a special profile in the probe forces plastified material from the front face to the rear, where high forces assist in a forged weld consolidation. This process of the tool passing through the welding line in a plasticized tubular metal tube results in a severe deformation of the solid state which involves a dynamic recrystallization of the base material.
Operating principle
A rotating cylindrical tool with a profiled probe is fed into a stop link between two clamped workpieces, until the rim, which has a larger diameter than the pin, touches the surface of the workpieces. The probe is slightly shorter than the required weld depth, with the tool shoulder on the work surface. After a short residence time, the tool moves forward along the attachment line to the pre-set welding speed.
Heat of friction is generated between the wear-resistant tool and the workpieces. This heat, together with that generated by the mechanical mixing process and the adiabatic heat inside the material, cause the agitated materials to melt without melting. As the tool moves forward, a special profile in the probe forces plastified material from the front face to the rear, where high forces assist in a forged weld consolidation. This process of the tool passing through the welding line in a plasticized tubular metal tube results in a severe deformation of the solid state which involves a dynamic recrystallization of the base material.
It can be understood in the following video:
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