Back-penetrated and ultrasonic tool head supported friction stir welding device

An ultrasonic tool head and friction stir technology, applied in welding equipment, manufacturing tools, non-electric welding equipment, etc., can solve problems such as non-welding, holes, and reduce welding load, so as to achieve convenient operation, improve plastic fluidity, and reduce plasticity The effect of deformation resistance

Pending Publication Date: 2019-06-25
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the above problems, improve the utilization rate of ultrasonic energy and the effect of ultrasound on the root of the weld, and at the same time completely eliminate the possible unwelded defects at the root of the weld, the present invention provides a back penetrating and ultrasonic tool head supporting auxiliary The advanced friction stir welding device enables the stirring needle to penetrate the workpiece, and at the same time, the ultrasonic wave is directly applied from the back of the

Method used

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  • Back-penetrated and ultrasonic tool head supported friction stir welding device

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Example Embodiment

[0032] Example 1

[0033] A friction stir welding device with back penetration and support of an ultrasonic tool head, including a long needle stirring head 1, an ultrasonic tool head 7 with a hole groove and a supporting platform, an horn 6, a transducer 5, and an ultrasonic generator 4. Sliding platform with universal wheels 8.

[0034] The specific installation and use methods of the above devices are as follows:

[0035] Step 1. Installation and fixing of ultrasonic vibration applying device:

[0036] The ultrasonic tool head 7 with a hole and a support platform, the horn 6 and the transducer 5 are connected as a whole, and are fixed on a sliding platform 8 with universal wheels.

[0037] The transducer 5 and the ultrasonic generator 4 are connected by a wire. The ultrasonic generator 4 will convert the power frequency (50Hz) current into an oscillating current of the ultrasonic frequency (15-60kHz), and transmit it to the transducer 5 through the wire, and the ultrasonic The freq...

Example Embodiment

[0044] Example 2

[0045] A friction stir welding device with back penetration and support of an ultrasonic tool head, comprising: a long needle stirring head (1), an ultrasonic tool head (7) with a hole groove and a supporting platform, an horn (6), a changer The energy device (5), the ultrasonic generator (4), the ultrasonic tool head (7) with the hole and the supporting platform is a block structure (including a cylinder, a cone or a square), and the block structure is A hole is provided on the top, and the ultrasonic tool head (7) with the hole and the supporting platform is connected to the horn (6), the transducer (5) and the ultrasonic generator (4) in sequence, and the transducer ( 5) Set on the platform, the long-needle stirring head (1) can be inserted through the workpiece into the hole of the ultrasonic tool head (7), and connected to the friction stir welding machine, the hole and the supporting platform The ultrasonic tool head is in direct contact with the lower s...

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Abstract

The invention relates to a back-penetrated and ultrasonic tool head supported friction stir welding device. The device comprises a friction stir welding machine with a long needle stirring head, an ultrasonic tool head with a hole groove and a support platform, an amplitude change rod, a transducer and an ultrasonic generator. The ultrasonic tool head with the hole groove and the support platformis directly contacted with areas to be welded at the back parts of workpieces; the tool head provides a support effect, and directly applies ultrasonic energy into a plastic shearing layer around a stirring needle; and an ultrasonic softening effect is used for reducing the material plastic deformation resistance, improving the fluidity and influencing the material deformation behaviors to preventholes in joints. The long needle stirring head matched with the hole groove is adopted to penetrate through the back parts of the workpieces to thoroughly prevent non-welding defects of root parts. Through the mode, the ultrasonic energy utilization rate is increased, the plastic deformation and the fluidity of materials at the root parts of welding lines are improved, the formation of the root parts of the welding lines is improved, the gains of the welding lines are refined, and the mechanical performances and the critical welding speed of the joints and the production efficiency are improved.

Description

technical field [0001] The invention belongs to the field of friction stir welding, and in particular relates to a back penetration and ultrasonic tool head support-assisted friction stir welding device. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Friction stir welding is a new type of solid phase joining technology, which has the advantages of high joint quality, small welding deformation, green welding process, etc. It is widely used in the field of joining aluminum alloys, magnesium alloys and other materials. Friction stir welding mainly relies on the frictional heat between the stirring head and the workpiece and the plastic deformation heat of the material to so...

Claims

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Application Information

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IPC IPC(8): B23K20/12B23K20/26
Inventor 石磊武传松赵俊杰
Owner SHANDONG UNIV
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