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A kind of automatic welding method of rail vehicle

An automatic welding and rail vehicle technology, applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of low manual welding efficiency, increased rework and repair workload, poor fusion of weld seams, etc., and achieve the goal of getting rid of welder skills The effect of relying on and solving defects

Active Publication Date: 2022-07-26
CRRC QINGDAO SIFANG CO LTD
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Problems solved by technology

The existing reinforcing plate is a 12mm thick 7-series aluminum alloy plate. The inventor found that since the lap welding seam between the circumference of the reinforcing plate and the edge beam of the chassis is converted from flat welding to vertical welding, and the welding position is overhead welding, the welder The skill requirements are high, and the angle of the welding torch needs to be adjusted continuously during the welding process. It is difficult to continuously form the weld seam at one time, and the interruption of welding will inevitably lead to welding arc closing, and the position of welding arc closing is also the place where welding defects are concentrated. , it will lead to defects such as poor fusion of welds and slag inclusions
However, it is difficult to weld the reinforcing plate and the oblong hole of the side beam of the chassis, and the manual welding efficiency is low
[0004] The above factors lead to a low qualified rate of first-time flaw detection of the weld seam of the reinforcement plate, and the workload of rework and repair increases, which restricts production efficiency, welding quality and construction stability

Method used

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  • A kind of automatic welding method of rail vehicle
  • A kind of automatic welding method of rail vehicle
  • A kind of automatic welding method of rail vehicle

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[0032] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0033] It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the invention clearly dictates otherwise, the singular is intended to include the plural as well, and it is also to be understood that when the terms "comprising" and / or "including" are used in this specification, Indicate the presence of features, steps, operations, devices, components and / or combinations thereof;

[0034] For the convenience of description, if the words "up", "down", "left" and "right" appear in the prese...

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Abstract

The invention discloses an automatic welding method for rail vehicles, comprising the following steps: tracking and positioning the welding seam to determine the starting position of the welding seam; welding a reinforcing plate and a side beam of an underframe, and during the welding process, reinforcing Single-layer and single-pass welding is adopted at the lap joint between the plate and the edge beam of the chassis, and multi-layer and multi-pass welding is adopted for the groove welding of the reinforcing plate and the edge beam of the chassis.

Description

technical field [0001] The invention belongs to the technical field of rail vehicle reinforcement plate welding, and in particular relates to an automatic welding method for rail vehicles. Background technique [0002] The statements herein merely provide background related to the present invention and do not necessarily constitute prior art. [0003] At present, manual welding is used for the welding of the reinforcement plate of the EMU vehicle and the side beam of the underframe. The existing reinforcing plate is a 12mm thick 7-series aluminum alloy plate. The inventor found that because the lap welding seam between the reinforcing plate peripheral and the edge beam of the chassis is flat welding and vertical welding, and the welding position is overhead welding, it is difficult for the welding workers. The skill requirements are high, and the angle of the welding torch needs to be adjusted continuously during the welding process. It is difficult to continuously form the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/235B23K9/02B23K9/32
CPCB23K9/235B23K9/02B23K9/32
Inventor 徐祗尚李越邢艳双方喜风张风东刘建孙国超
Owner CRRC QINGDAO SIFANG CO LTD
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