A powder enhanced friction stir riveting welding method and device
A technology of friction stirring and powder, which is applied in welding equipment, non-electric welding equipment, manufacturing tools, etc., can solve the problems of low connection strength of riveted joints, affecting the metallurgical bonding strength of joints, and large riveting forming force, so as to improve energy utilization efficiency , Reduce the size of the transmission mechanism, and the effect of small forming force
Active Publication Date: 2021-04-27
XI AN JIAOTONG UNIV
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Problems solved by technology
Riveting technology uses metal plastic deformation ability to achieve the purpose of connection by forming a mechanical lock between plates or between plates and rivets, but the connection strength of riveted joints is not high, the riveting forming force is large, the air tightness is poor, and the appearance quality is poor
The friction stir spot welding technology utilizes the friction stirring and extrusion effect between the stirring head and the metal material to form a metallurgical joint between the plasticized metal materials, but the traditional friction stir spot welding has keyhole defects
Although retraction friction stir spot welding can solve the keyhole problem, there are HOOK defects in retraction friction stir spot welding, which affect the metallurgical bonding strength of joints
Method used
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[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention.
[0053] refer to figure 2 , image 3 with Figure 4 , a powder enhanced fric...
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Abstract
The invention relates to a powder-enhanced friction stir riveting welding device, which includes a friction stir riveting welding main shaft, a C-shaped frame and a tooling table; The material mechanism; the friction stir riveting welding spindle is used to realize the rotational movement and feeding movement of the rivet and the feeding and mixing of the powder; the C-shaped frame is used to fix the friction stir riveting welding spindle and the workbench; the workbench is mainly composed of a load cell, The sensor pressure head, tooling mold and tooling pressure plate are used to clamp the workpiece to be riveted and to test the riveting force of the main shaft in real time. The invention can realize powder-enhanced friction stir riveting welding between the same or different lightweight plates at room temperature, and can obtain friction stir riveting joints with rivets without keyhole defects, good joint forming quality, and high connection strength. The forming force required for riveting welding is smaller than that of traditional riveting, and it has the advantages of higher efficiency, easy operation and lower energy consumption.
Description
technical field [0001] The invention belongs to the technical field of plate connection, and relates to a powder enhanced friction stir riveting welding method and device. Background technique [0002] With the continuous improvement of the comprehensive performance of mechanical equipment in the fields of aerospace, transportation, petrochemical and other fields, the continuous implementation of equipment lightweight and integration. The connection of lightweight plates of the same material, dissimilar materials, same thickness and different thickness has received extensive attention. At present, the technologies suitable for point connection of lightweight plates mainly include riveting and friction stir spot welding. Riveting technology uses metal plastic deformation ability to achieve the purpose of connection by forming a mechanical lock between plates or between plates and rivets, but the connection strength of riveted joints is not high, the riveting forming force is ...
Claims
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IPC IPC(8): B23K20/12B23P15/00
CPCB23K20/12B23P15/00B23K20/122B21J15/027B23K20/128B23K20/123B23K20/1255
Inventor 赵升吨张鹏王永飞李靖祥范淑琴
Owner XI AN JIAOTONG UNIV