An external sound field type titanium alloy manual welding device and welding method

Abstract

The invention discloses an external sound field type titanium-alloy manual welding device which is characterized in that an ultrasonic vibration body consisting of an ultrasonic transducer and an ultrasonic amplitude transformer is sleeved on a ceramic nozzle at the front part of a TIG (tungsten inert gas) welding torch through a central hole, and the TIG welding torch, the ultrasonic transducer and the ultrasonic amplitude transformer are in a coaxial line so as to increase the radiation area. The welding torch is provided with a welding switch, an ultrasonic switch and a fine-tuning mechanism, and the opening and closing of an air relay in an ultrasonic generator can be controlled through triggering the ultrasonic switch, thereby eliminating the high-frequency interference in the process of TIG arc-striking. A welding method comprises the following steps of: firstly enabling a tungsten electrode of the welding torch to be coincident with the axes of the ultrasonic transducer and the ultrasonic amplitude transformer; starting a TIG welding machine, triggering a button of the welding switch, and carrying out arc-striking according to a conventional TIG welding method; and handholding and operating the welding torch, adjusting the angles of the welding torch and a workpiece, and implementing an operation of welding according to the welding position, thereby realizing the ultrasonic TIG compound welding of titanium alloys. The device and method disclosed by the invention are strong in adaptability, not limited by the sizes of workpieces, suitable for all-position welding, and strong in practicability, and have a good improvement effect on the attachment joints of titanium alloys and other materials.

Description

Technical field [0001] The invention belongs to the technical field of arc welding of titanium alloys, in particular to an external sound field type titanium alloy manual welding device and a welding method with simple equipment and convenient operation. Background technique [0002] As we all know, titanium alloy is a lightweight, high-strength, and corrosion-resistant alloy material. It is used in many fields in aerospace and people’s daily life, and it is more and more widely used. In the application of many structural parts, it is bound to encounter titanium The connection problem between alloys or between titanium alloy and other materials. At present, the connection methods involved include diffusion welding, friction welding, explosive welding, TIG welding, laser welding, electron beam welding, brazing, etc. The shortcomings are complicated and the connection effect difference. [0003] The vibration generated by the ultrasonic vibration can make the static characteristics ...

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Problems solved by technology

[0002] As we all know, titanium alloy, as a light-weight, high-strength, corrosion-resistant alloy material, is used in many fields in aerospace and people's daily life, and it is more and more widely used. In the application of many structural parts, titanium is bound to be encountered. The connection between alloys or between titanium alloys and other materials. At present, the connection methods involved include diffusion welding, friction welding, explosive welding, TIG welding, laser welding, electron beam welding, brazing, etc. The disadvantages are that the operation is complicated and the connection effect is low. Difference

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