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, which can solve the problems of unusable leveling machines and aluminum alloy hollow extrusion profiles that cannot be leveled, so as to avoid flammable and explosive equipment, remarkable leveling effect and saving The effect of production costs

Active Publication Date: 2013-04-03
ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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  • 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.

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

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Embodiment Construction

[0029] A method for leveling the welding deformation of the side wall of an urban rail vehicle, the steps of the method are as follows:

[0030] 1. Selected equipment: the welding machine is a gas metal shielded welding machine;

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

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

[0033] Use a tape measure, a ruler and a marker to mark the slotting line in the deformed area of ​​50-100 mm;

[0034] 3. Grooving

[0035] Groove the original weld seam with a straight grinder or a circular saw, the groove shape is V-shaped, the groove depth is 2 / 3 of the original solution depth, and the included angle of the V-shaped groove is 35-65°;

[0036] 4. Welding

[0037] Welding technical parameters are as follows:

[0038]

[0039] 5. The welding operation and the cold work are carried out at the same time. During the welding operation, two people wo...

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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 an urban rail vehicle made of aluminum alloy hollow extruded profiles. Background technique [0002] At present, there are three main methods for leveling various deformations of structural parts: manual leveling, flame leveling (water and fire leveling) and mechanical leveling. These methods have the following disadvantages for the leveling of the side wall panels after the aluminum alloy car body is assembled and welded: [0003] 1. Manual leveling is only suitable for the leveling of small-scale local protrusions or improper accessories for aluminum alloy car bodies. The deformation of the side wall panel after welding belongs to large-scale leveling. At the same time, the thickness of the side wall panel skin is 3 mm, and the wall panel skin and weld seam cannot be hit hard with a hand hammer. If there is a local concave, it cannot be returned due to the c...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B23K9/173
Inventor梁涛段力李忠辉
OwnerZHUZHOU ELECTRIC LOCOMOTIVE CO LTD