Device and method for adjusting and correcting wagon wallboard welding deformation

Abstract

The invention relates to a device and a method for adjusting and correcting wagon wallboard welding deformation. The device comprises a high-frequency electro-magnetic induction type heater, a temperature control system, an adjusting and correcting device base, a longitudinal walking mechanism, an adjusting and correcting device lateral moving table, a cantilever compressing mechanism, a hydraulic control system, a workpiece support base and an adjusting and correcting device console. Therefore, the device and the method have the following advantages: 1, the temperature is rapidly increased in a workpiece heating process, the workpiece is uniformly heated, and oxidation and overoxidation of the surface of the workpiece are avoided to the greatest extent; 2, the heating process can be monitored and adjusted conveniently; 3, sufficient power is provided to adjust and correct the workpiece; and 4, universality of the adjusting and correcting device is guaranteed, and the adjusting and correcting efficiency is increased.

Description

[0001] technical field [0002] The invention relates to a straightening device and a straightening method thereof, in particular to a device and a straightening method for straightening welding deformation of a railway freight car wall plate used for the end plate and side plate of a railway freight car body. Background technique [0003] In the manufacturing process of the steel structure of the railway freight car body, in order to eliminate the welding deformation generated during the welding process of the thin plate and ensure that its flatness meets the technical requirements, it is difficult to effectively control the welding deformation of the thin plate workpiece using common welding techniques, so the industry often uses The method of adjustment and correction eliminates the welding deformation of the thin plate. [0004] At present, the adjustment methods commonly used by domestic railway wagon manufacturers include: strong mechanical adjustment and flame heating...

AI Technical Summary

Problems solved by technology

[0006] 1. The strength of the adjustment and straightening process: because the welding deformation of the thin plate structure is common after welding, and the deformation area is large, the stress of the thin plate after welding cannot be eliminated by itself. Flatness, and improper operation can easily cause damage to the surface of the plate. The flatness of the plate after local plastic deformation is still difficult to meet the technical requirements, and the appearance quality is poor. Improper operation will lead to greater internal stress of the workpiece, and adjustment and correction are difficult, time-consuming, and random. Big

[0007] 2. Heating non-uniformity of flame heating adjustment and straightening: the adjustment method of flame heating workpiece is difficult to effectively control the surface temperature of the workpiece during the heating process, and it is difficult to detect the surface temperature of the workpiece in real time, and the randomness of the heating process causes the heating part of the workpiece to be heated Uneven, easy to cause local overheating, so it is easy to cause local deformation to increase after flame heating and straightening

[0008] 3. The flame heating process is likely to cause serious oxidation on the surface of the workpiece: due to the use of flame heating, the heating rate is slow, and the workpiece is in contact with the flame for a long time, which can easily cause serious oxidation on the surface of the workpiece during the heating process

[0009] 4. The flame heating efficiency is low

The workpiece is heated by the flame method, because it is manually operated, so its heating efficiency is greatly affected by human individual differences, and the heating efficiency is relatively low

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