Stirring head for friction stir welding of special material and welding method
A technology of friction stirring and dissimilar materials, applied in welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problems of high replacement cost, wear and tear of stirring head, high cost of stirring head, etc., and achieve overall cost reduction, time efficiency improvement, No deterioration in welding quality
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[0018] A stirring head for friction stir welding of dissimilar materials, comprising a shoulder 1 and a stirring pin 2 arranged at the center of the bottom of the shoulder 1 and protruding downward. The material of the shoulder 1 is H13 steel, and the material of the stirring pin 2 is Tungsten-rhenium alloy.
[0019] The above stirring head is used for the welding of two dissimilar materials, wherein the upper layer metal 3 is AM60B magnesium alloy material, and the lower layer metal 4 is DC01 low carbon steel material, the specific steps are as follows figure 1 Shown:
[0020] In the first step, the softer AM60B magnesium alloy material is placed on the upper side, and the harder DC01 low-carbon steel material is placed on the bottom;
[0021] The second step: rotate the stirring head, use a higher pressing speed to make the stirring needle 2 part of the composite stirring head move inside the softer material, wherein the rotating speed of the stirring head is selected as 20...
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