Method for leveling side-wall welding deformation of urban rail vehicle

A technology for welding deformation and urban rail vehicles, which is applied in the field of leveling, can solve the problems that aluminum alloy hollow extruded profiles cannot be leveled, and the leveler cannot be used, so as to avoid flammable and explosive equipment, and achieve remarkable leveling effects. Simple effects using the device

Active Publication Date: 2011-08-17
ZHUZHOU ELECTRIC LOCOMOTIVE CO
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 3. Mechanical leveling: The roller leveling machines currently on the market are only suitable for leveling plates, and cannot be leveled for aluminum alloy hollow extrusion profiles
The special gantry leveling machine can only be used to level a single flat side wall panel. After the aluminum alloy body is assembled and welded, the side wall panel is in an upright position, and the leveler cannot be used due to the influence of space and the position of the side wall panel.

Method used

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  • Method for leveling side-wall welding deformation of urban rail vehicle
  • Method for leveling side-wall welding deformation of urban rail vehicle

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Embodiment Construction

[0029] A method for welding deformation and leveling of side walls of urban rail vehicles, the steps of the method are as follows:

[0030] 1. Optional equipment: the welding machine is a MIG welding machine;

[0031] 2. Determine the position of the weld:

[0032] First use a flat ruler to measure the side wall panels, determine the deformation area, and clean and polish the area to be welded;

[0033] Mark the slotting line with tape measure, flat ruler and marker in the deformation area 50~100mm;

[0034] 3. Slotting

[0035] Use a straight grinder or a circular saw to groove the original weld. The groove shape is V-shaped, the groove depth is 2 / 3 of the original solution depth, and the V-shaped groove angle is 35-65°;

[0036] 4. Welding

[0037] The welding technical parameters are as follows:

[0038]

[0039]

[0040] 5. The welding operation and cold work are carried out at the same time. During the welding operation, two people work together. While the welder is performing the weld...

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Abstract

The invention relates to a method for leveling side-wall welding deformation of an urban rail vehicle, comprising the steps of: adopting a gas metal arc welding machine, determining the positions of weld joints, cleaning and polishing areas to be welded, grooving, welding, carrying out welding operation and cold working simultaneously, measuring, grinding and checking the weld joints, wherein thegroove is V-shaped, the depth of the groove is 2/3 of the penetration depth, and a V-shaped groove included angle is 35-65 degrees; and when a welding operator carries out welding operation, the coldworker uses a flat ruler to measure the deformation condition of side walls in the process of welding. In the method, the equipment is simple, safe and reliable, the operation is simple and convenient, the production efficiency is high, the production cost is saved, the economic benefit is high, and the comprehensive cost is reduced by 50% as compared with that of the flame leveling.

Description

Technical field [0001] The invention relates to a leveling method, in particular to a side wall leveling method of urban rail vehicles manufactured by using aluminum alloy hollow extruded profiles. Background technique [0002] At present, there are mainly three methods for the leveling of various deformations of structural parts: manual leveling, flame leveling (water and fire leveling) and mechanical leveling. These methods have the following shortcomings for the side wall leveling after assembly welding of the aluminum alloy car body: [0003] 1. Manual leveling is only suitable for the leveling of a small area of ​​partial convexity or incorrect parts of the aluminum alloy car body. The deformation of the side wall panel after welding belongs to a large-scale leveling. At the same time, the thickness of the side wall panel is 3mm, and the wall panel skin and weld cannot be hit with a hand hammer. If there is a partial recession, it cannot be adjusted back due to the closed ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/173
Inventor 梁涛段力李忠辉
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO
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