Friction stir spot welding method
A friction stir and spot welding technology, which is applied in the field of friction stir spot welding between metal materials, can solve the problems of excessive surface extrusion, reduce the workload of processing, and weld pressure into the pit depth, etc., to achieve increased heat production, The effect of improving productivity
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[0008] In the present invention, the upper and lower shaft shoulders and the upper and lower stirring heads are simultaneously rotated and pressurized by the upper and lower shaft shoulders and the stirring heads, so that the welded parts are welded under the action of mechanical friction heat to form high-quality welds. point.
[0009] like figure 1 As shown, 1 and 2 are parts to be welded, 3 is the upper shoulder, 4 is the upper stirring head, 5 is the lower shoulder, and 6 is the lower stirring head. Depend on figure 1 The equipment parameters shown in the schematic diagram of the double-sided friction stir spot welding welding process include: pressure F 1 , F 2 ; Rotation speed of shaft shoulder 3, 5 ω1; Rotation speed of stirring head 4, 6 ω2, and horizontal moving speed V; Stirring head 4, 6 and shaft shoulder 3, 5 up and down movement stroke S; Insertion depth h of stirring head 4, 6 , insertion speed v1, insertion residence time t, withdrawal speed v2 of the stirr...
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