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Friction stitch welding experimental device

A technology of friction stitch welding and experimental equipment, which is applied in the direction of auxiliary equipment, welding equipment, welding equipment, etc., can solve problems such as the inability to complete the repair of cracks on submarine pipelines, and achieves a simple structure, excellent welding quality, and high welding efficiency. Effect

Inactive Publication Date: 2008-08-20
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY +1
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  • Application Information

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Problems solved by technology

However, this kind of friction welding can only complete simple tasks like stud connection, and cannot complete complex tasks such as the repair of broken submarine pipelines and cracks on offshore platforms.

Method used

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  • Friction stitch welding experimental device

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Depend on Figure 1A , Figure 1B , Figure 2A and Figure 2B Shown, a kind of friction stitch welding method, this method comprises the following steps: on the object to be welded 1, drill welding hole 11, use the stopper rod 2 that diameter is slightly smaller than welding hole 11 to rotate at high speed in welding hole 11, and axially apply The pressure P causes the contact surface between the stopper rod 2 and the welding hole 11 to be heated and melted, and undergoes a crystallization and metallurgical reaction to form a welding unit 3 , completing a series of overlapping welding units 3 to form a complete lap welding seam 4 .

[0019] The experimental device used to realize the friction stitch welding method is mainly composed of a base 5, a mobile slide table 6, a workpiece fixture 7, a beam 8, a friction spindle head 9 and a console 10, and is characterized in that: the base 5 is screwed with a beam 8. A friction spindle head 9 is also arranged on it, and a mo...

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Abstract

The invention discloses a friction stitch welding method and the experimental device. The friction stitch welding method is as follow: a stopper (2), which rotates at high speed and applies pressure in axial direction, is inserted into a pre-boring welding hole (11) of a body (1) to be welded; the contact interface of the welding hole (11) and the stopper (2) is hot-melted, and a welding unit is formed after the crystallization and metallurgy reaction of the interface; a series of welding units (3) are overlapped to form a complete weld joint. The friction stitch welding experimental device comprises a base (5), a shift slipway (6) arranged on the base, a workpiece fixture (7), a beam (8), and a friction main shaft head (9), and is controlled by a console (10). The experimental device can not only be used in plate welding and pipeline welding, but also used in underwater welding experiments after assembled with a matching flume (71). The friction stitch welding method and the experimental device have the advantages of simple method, easy operation, high reliability, excellent quality; simple equipment, low cost, simple use, maintenance and repair.

Description

technical field [0001] The invention relates to a welding method and its experimental device, in particular to a solid-state welding method capable of realizing connection and an experimental device for plate welding, pipeline welding and underwater welding using the method. Background technique [0002] There are many types of welding methods currently used to adapt to various connection conditions and welding of different materials. Friction welding is under the action of pressure, through the friction of the interface to be welded, the temperature of the interface and its vicinity will increase, the deformation resistance of the material will decrease, the plasticity will increase, and the oxide film on the interface will be broken. A solid-state welding method that realizes the connection through diffusion and recrystallization metallurgical reactions. Friction welding has outstanding advantages such as high joint quality, suitable for connection of dissimilar materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/12B23K20/26B23K37/053
Inventor 焦向东周灿丰陈家庆高辉栾国红季亚娟钱德重
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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