Friction stir welding method for reversely rotating stirring needle and shaft shoulder
A friction stir, welding method technology, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the asymmetry of joint performance, reduce the bearing capacity of welded structures, temperature field, joint structure and residual stress distribution asymmetry, etc. problems, to achieve the effect of improving mechanical properties, reducing asymmetry, and reducing torque effects
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[0014] Specific implementation manner one: such as Figure 1~3 As shown, a stirring pin and shaft shoulder described in this embodiment
[0015] The friction stir welding method of reverse rotation is realized according to the following steps:
[0016] Step 1. Place the first welded work piece 4 and the second welded work piece 5 butt on the same horizontal plane (ie, the first welded work piece 4 and the second welded work piece 5 are paired), and clamped in On the workbench; the first welded workpiece 4 and the second welded workpiece 5 are plates;
[0017] Step 2: The stirring needle 1 of the stirring head 3 rotates at 100-3000 rpm Penetrate into the part to be welded (ie the abutting surface of the first welded workpiece 4 and the second welded workpiece 5); the rotation direction of the shoulder 2 of the stirring head 3 is opposite to that of the stirring needle 1, and the shoulder of the stirring head 3 2 speed Speed with stirring needle 1 Same; the penetration speed of ...
Example Embodiment
[0020] Embodiment 2: In this embodiment, in step 2, the rotation speed of the stirring needle 1 It is 200~2500 rpm. The rotation speed of the shaft shoulder can be selected according to the specific conditions of the first welded workpiece 4 and the second welded workpiece 5 , In order to reduce the resistance of the stirring head downward and forward. The other steps are the same as in the first embodiment.
Example Embodiment
[0021] Specific embodiment three: in this embodiment, in step two, the penetration speed of the stirring head 3 is 2-4 mm / min. The penetration speed of the stirring head 3 can be selected according to the specific conditions of the first welded workpiece 4 and the second welded workpiece 5, so that the stirring head can easily penetrate into the welded workpiece. The other steps are the same as the first or second embodiment.
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