| LIU Ya-fan,SHI Cheng-cheng,ZHAO Fei-fei,WANG Wen-yu,REN Zhi-qiang,QIN Zhi-yong,WANG Hong-qi,LU Ke-feng,FAN Shi-chong,YIN Feng-shi,ZHAO Yang.Research Status and Development Direction of Friction Stir Solid Phase Repair Technology[J],52(4):47-66, 137 |
| Research Status and Development Direction of Friction Stir Solid Phase Repair Technology |
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| DOI：10.16490/j.cnki.issn.1001-3660.2023.04.004 |
| KeyWord:defect repair friction stir welding friction stir spot welding friction stir additive process parameters mechanical property |
| Author | Institution |
| LIU Ya-fan |
College of Mechanical Engineering, Shandong University of Technology, Shandong Zibo , China |
| SHI Cheng-cheng |
College of Mechanical Engineering, Shandong University of Technology, Shandong Zibo , China |
| ZHAO Fei-fei |
Department of Electronic Engineering, Army Academy of Border and Coastal Defence, Xi'an , China |
| WANG Wen-yu |
a.National Key Laboratory for Remanufacturing, b.Armament Department of the Army Information Assurance Room, Army Academy of Armored Forces, Beijing , China |
| REN Zhi-qiang |
a.National Key Laboratory for Remanufacturing, b.Armament Department of the Army Information Assurance Room, Army Academy of Armored Forces, Beijing , China |
| QIN Zhi-yong |
a.National Key Laboratory for Remanufacturing, b.Armament Department of the Army Information Assurance Room, Army Academy of Armored Forces, Beijing , China |
| WANG Hong-qi |
College of Mechanical Engineering, Shandong University of Technology, Shandong Zibo , China |
| LU Ke-feng |
College of Mechanical Engineering, Shandong University of Technology, Shandong Zibo , China |
| FAN Shi-chong |
College of Mechanical Engineering, Shandong University of Technology, Shandong Zibo , China |
| YIN Feng-shi |
College of Mechanical Engineering, Shandong University of Technology, Shandong Zibo , China |
| ZHAO Yang |
a.National Key Laboratory for Remanufacturing, b.Armament Department of the Army Information Assurance Room, Army Academy of Armored Forces, Beijing , China |
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| Abstract: |
| For a large number of metal structural parts used in the manufacturing industry today, cracks, holes and grooves and other defects are inevitable in the production and use process, affecting the use of metal structural parts, and in serious cases even lead to structural scrap. Therefore, in order to ensure the reliability of the use of metal structural parts, the welding repair technology for defects in metal structural parts has practical engineering significance. Compared with traditional fusion welding, friction stir welding has the advantages of low heat input, small welding deformation, high welding efficiency, low welding temperature, small grain size and no obvious defects. In addition, its weld has excellent morphology and performance, so it has great potential for development in the field of metal material repair. However, friction stir welding can only be used to repair cracks, small grooves, so other defects and other types of defects are difficult to be repaired effectively. In view of the limitations of friction stir welding repair, friction stir spot welding repair and friction stir additive repair based on the principle of friction stir welding are introduced. Friction stir spot welding repair was mainly divided into refilled friction stir spot welding repair, filling friction stir welding repair and friction plug welding repair, mainly used for keyhole and other hole type defect repair. By controlling the process parameters such as tool speed, welding time and welding force, the grain size can be refined and the repaired joints with excellent mechanical properties can be obtained. However, it is also found that the refilled friction stir spot welding repair process is complex and the repair area is limited by the size of the welding tool. For filling friction stir welding repair and friction plug welding repair, suitable consumable welding tool materials need to be selected. The working principle, joint performance and strengthening methods of various kinds of friction stir spot welding repair are expounded, and the shortcomings of various processes are compared and analyzed. Friction stir additive repair is mainly divided into composite additive repair and additive friction stir deposition repair, mainly used for large area and large volume surface defect repair. Composite additive repair is a repair technology that combines cold spraying and friction stir processing, and has great potential for development in the field of repairing large defects on the surface of parts. Additive friction stir deposition repair is a combination of friction stir welding and raw material addition, using the heat generated by the friction of a high-speed rotating non-self-consuming deposition tool to deposit solid or metal powder raw materials, layer by layer, at a high deposition rate, so as to complete the repair. However, due to the poor bonding strength of the deposited material to the substrate for composite additive repair and additive friction stir deposition repair, the performance of the repaired area does not meet the requirements for industrial use, and further exploration and research is needed. The current research status of three stir friction solid phase repair technologies are summarized:friction stir welding repair, friction stir spot welding repair and friction stir additive repair, and the mechanism, properties and technological characteristics of various kinds of friction stir additive repair are discussed in detail, pointing out the repair area performance, current problems and development trends of the three technologies. |
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