A welding device and method for deflashing friction stir welding
A technology of friction stir welding and welding equipment, which is applied to welding equipment, non-electric welding equipment, metal processing equipment, etc., can solve the problems of increased cost and longer production cycle, and achieve the goals of reducing labor intensity, improving mechanical properties, and reducing production cycle Effect
Active Publication Date: 2022-02-11
AEROSPACE ENG EQUIP SUZHOU CO LTD
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Problems solved by technology
[0003] However, in the process of friction stir welding, due to the obvious height difference between the two sides of the weld due to the welding material itself, or the excessive pressure of the shoulder of the stirring tool during the welding operation, the softened material will be lost when the stirring tool rotates at a high speed. Extruded from the shaft shoulder, obvious rough burrs and flashes are formed on both sides of the weld, making effective welding impossible or obvious cracks and defects appear after welding; and flashes and burrs need to be additionally removed after welding, making Longer production cycle and higher cost
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[0023] The implementation of the technical solution will be further described in detail below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0024] like Figure 1~5 One embodiment shown: a welding device for deflashing friction stir welding, including an end cover holder 2 and a retractable stirring tool 3, the end cover holder 2 is provided with a retractable knife handle 1, and the end cover holder 2 is equipped with a retractable handle 1, and the end The cover holder 2 is mounted on the outer end of the retractable knife handle 1; the retractable knife handle 1 is fixedly connected to the retractable stirring tool 3, and the front end of the end cover holder 2 is connected to the hot pressing body 4, and the retractable stirring tool The tool 3, the end cover holder 2 and the hot-press body 4 are...
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Abstract
The invention discloses a welding device and method for flash-removing friction stir welding, which comprises an end cover holder and a retractable stirring tool. A retractable knife handle is arranged inside the end cover holder, and the retractable knife handle is fixedly connected to the retractable tool Stirring tools, the front end of the end cover holder is connected to the heat-pressed body, the retraction stirring tool is arranged coaxially with the end cover holder and the heat-pressed body, and the retraction stirring tool is kept in clearance fit with the end cover holder and the heat-pressed body. The present invention is based on the conventional friction stir welding process, and the surrounding semi-arc hot-pressing surface is connected to the end cap holder outside the stirring tool and does not participate in the friction stirring process of the stirring tool, and the high-speed rotating stirring tool shaft shoulder presses down on the material to cause welding When obvious flash is formed on both sides of the seam, the surface of the sample is pressed and pressed through the half-arc body hot-pressing surface to discharge the flash; The open position of the front end of the hot-pressed body extends into the inner wall to clean up accumulated material, and continues to weld to realize continuous production.
Description
technical field [0001] The invention discloses a welding device and method for deflashing friction stir welding, and relates to the technical field of friction stir welding. Background technique [0002] Friction Stir Welding (FSW for short) is a solid-phase connection welding technology, invented by The Welding Institute (TWI for short) in 1991, mainly used in aluminum alloys, magnesium alloys, etc. Connection of non-ferrous metals. In the process of friction stir welding, a cylindrical stirring head with a shaft shoulder and a stirring needle is inserted into the workpiece to be welded. The friction between the stirring head and the material to be welded generates frictional heat, which makes the material thermally plasticized. When the stirring tool When moving forward along the surface to be welded, the thermoplastic material is transferred from the front of the stirring head to the rear, and the solid phase connection between the workpieces is realized under the action...
Claims
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IPC IPC(8): B23K20/12B23K20/26
CPCB23K20/122B23K20/26
Inventor 李文晓范美华杨国舜徐晓霞徐萌史明松胡霞
Owner AEROSPACE ENG EQUIP SUZHOU CO LTD