Multi-layer forged and pressed stirring head for friction stir welding
A friction stir welding and stirring head technology, which is used in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problems of uneven depth direction of weld structure and increased flash, and achieve uniform depth direction and reduce forging. The effect of pressure, up and down flow is sufficient
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[0023] The present invention will be further described in detail below with reference to the drawings and specific embodiments of the specification.
[0024] Figure 1 to Figure 4 An embodiment of the multi-layer forging type stirring head for friction stir welding of the present invention is shown, which includes a clamping portion 1, a shoulder portion 2 and a stirring needle 3 connected in sequence, and a spiral is provided on the circumference of the stirring needle 3 The top surface of the groove 31 and the spiral groove 31 forms a forging surface 32. During welding, the clamping part 1 is used for clamping, the stirring pin 3 generates heat energy by rotating friction, and the shoulder part 2 is used to form forging. Compared with the traditional structure, the stirring head forms a multilayer spiral groove 31 on the peripheral side of the stirring needle 3, and the top surface of the spiral groove 31 forms a forging surface 32, which is brought about by the multilayer for...
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