Bobbin-FSW can realize the synchronous welding of the upper and lower surfaces of the work piece. It can avoid the traditional problem of lack of penetration in the process of FSW, and solve the welding problem of cavity profile.
◆Reducing the requirements for the rigidity of the equipment
◆Reducing the welding tooling requirements
◆Saving labor and material resources
◆Avoiding the root defect of FSW welding seam
◆The workpieces are heated evenly
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