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Heating correction method of welded structure

A welding structure and position technology, which is applied in welding equipment, auxiliary welding equipment, welding/cutting auxiliary equipment, etc., can solve the problems of over-burning of the base metal and long correction work time, so as to solve post-weld deformation and shorten correction work time , The effect of solving the problem of welding deformation

Active Publication Date: 2019-02-15
CRRC DALIAN CO LTD
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Problems solved by technology

[0005] The invention provides a heating and straightening method for welded structures, which solves the problems that the existing repeated heating and straightening tends to cause overburning of the base metal and the long working time for straightening

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  • Heating correction method of welded structure
  • Heating correction method of welded structure

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] In the description of the specification of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "left", "right", "longitudinal", "middle", etc. is based on the orientation or positional relationship shown in the drawings, only It is for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must...

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Abstract

The invention provides a heating correction method of a welded structure. The heating correction method of the welded structure comprises the steps that the part generating bending deformation in thewelded structure is subjected to a first heating correction treatment process, so that the bending deflection of the welded structure is less than or equal to a preset threshold; and after the first heating correction treatment process is completed, the part generating distortion deformation in the welded structure is subjected to a second heating correction treatment process, the second heating correction treatment process refers to heating correction through a gradually-wide flame, and the flame width, corresponding to the side with small distortion deformation in the welded structure, of the gradually-wide flame is less than the flame width, corresponding to the side with large distortion deformation in the welded structure, of the gradually-wide flame. According to the heating correction method of the welded structure, the problems that as for existing repeated heating correction, base materials are prone to overburning, and the correction working time is long are solved.

Description

technical field [0001] The invention relates to the technical field of rectification, in particular to a heating rectification method for a welded structure. Background technique [0002] The center beam assembly weldment of the locomotive underframe is a key welded part of the underframe load-bearing structure, and plays a key role in the overall load-carrying of the locomotive. The welding size, welding quality and straightness of the weldment of the middle beam assembly of the underframe are the key to manufacturing and also an important aspect of process control. The overall size and straightness of beam group weldments not only affect the overall bearing capacity of the locomotive, but also determine the assembly of the locomotive chassis and the installation of various equipment in the chassis machinery room. The middle beam of the locomotive is a box-shaped beam structure, and the thickness of the upper and lower cover plates of the box-shaped beam is inconsistent. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D3/00B21D37/16B23K37/00
CPCB21D3/00B21D37/16B23K37/00
Inventor 宋协鹏王明山张卓乔岩陶佳刘峰
Owner CRRC DALIAN CO LTD
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