Compound sealing device for ends of thin-wall stainless steel pipe and sealing method
A stainless steel tube and composite sealing technology, which is applied in the direction of tubular objects, applications, non-electric welding equipment, etc., can solve problems such as poor torsion resistance, and achieve the effect of improving work efficiency and fast clamping speed
Inactive Publication Date: 2015-12-09
姜海
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Problems solved by technology
[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a thin-walled stainless steel pipe end composite sealing device and sealing method, which does not use an internal tensioning device to connect the thin-walled stainless steel pipe and the aluminum alloy rod, and rotate and stir The thin-walled stainless steel tube and aluminum alloy rod are welded by the head, which overcomes the shortcoming of the poor torsion resistance of the thin-walled stainless steel tube
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[0028] Such as Figure 1 to Figure 4 As shown, a compound sealing device for a thin-walled stainless steel pipe 1 end of the present invention includes a roller frame group 7 for supporting an aluminum alloy rod 6, one end of the aluminum alloy rod 6 is installed on a three-jaw chuck 17, and the The other end of the aluminum alloy rod 6 is inserted into the thin-walled stainless steel tube 1. The aluminum alloy rod 6 and the thin-walled stainless steel tube 1 are interference fit. One end of the thin-walled stainless steel tube 1 is installed in the rotating cylinder 10 through the thin-walled clamp 9. A stirring needle 2 is installed above the welding seam 4 of the alloy rod 6 and the thin-walled stainless steel pipe 1, the stirring needle 2 is connected with the stirring head 3, the stirring head 3 is installed on the rotating wall, and the rotating arm 8 is a telescopic arm, The rotating arm 8 is fixedly connected with the rotating cylinder 10, a part of the rotating cylind...
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The invention discloses a compound sealing device for the ends of a thin-wall stainless steel pipe and a sealing method. The compound sealing device comprises a roller frame group for supporting an aluminum alloy rod, wherein one end of the aluminum alloy rod is arranged on a three-jaw chuck, and the other end of the aluminum alloy rod is inserted to the thin-wall stainless steel pipe; the aluminum alloy rod is in interference fit with the thin-wall stainless steel pipe; a stirring pin is arranged above the fit part of the aluminum alloy rod and the thin-wall stainless steel pipe; a rotating arm is fixedly connected with a rotating cylinder; one part of the rotating cylinder is located in a bearing arranged in a fixed cylinder, and the fixed cylinder is fixed through a support frame; and the outer wall of the rotating cylinder is provided with a plurality of circles of gear teeth meshed with a gear, the gear is connected with a motor through a gear shaft, and the motor is arranged on a mobile device. The thin-wall stainless steel pipe expands through being heated in oil bath, the aluminum alloy rod with the temperature lower than the room temperature is inserted to the thin-wall stainless steel pipe, and no internal expanding devices are used; and the compound sealing device has universality in the welding of thin-wall pipe fittings made of other materials.
Description
technical field [0001] The invention relates to a thin-walled stainless steel pipe end composite sealing device and a sealing method, belonging to the field of metal material processing. Background technique [0002] Friction Stir Welding (FSW for short) is a patented welding technology invented by The Welding Institute in 1991. In addition to the advantages of ordinary friction welding technology, friction stir welding can also connect various joint forms and different welding positions. Friction stir welding technology has been successfully applied in aviation, aerospace, ships, trains, electric power and heavy weapons. However, there are still some problems in the welding of thin-walled pipes. [0003] When the pipe wall becomes smaller, the difficulty of welding becomes greater. Patent (201410729971.X) proposes the use of tungsten inert gas shielded welding to solve the connection problem of small-diameter thin-walled stainless steel pipes; patent (201010524846.7) prop...
Claims
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IPC IPC(8): B23K20/12B23K20/24B23K20/227B23K101/06B23K103/20
CPCB23K20/1245B23K20/125B23K20/2275B23K20/24
Inventor 姜海
Owner 姜海