Welding production method of bainite steel rails

A production method and bainite technology, applied in the direction of steel rails, welding equipment, welding equipment, etc., can solve problems such as cracking of welded joints and fatigue fractures

Inactive Publication Date: 2021-09-14
METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, due to the relatively high yield strength of bainitic rails, if the welded joints of the welded bainitic rails are straightened to make the straightness of the welded joints meet the requirements of the railway industry standard (railway industry standard TB/T1632.1 -2014), the abov...

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  • Welding production method of bainite steel rails
  • Welding production method of bainite steel rails
  • Welding production method of bainite steel rails

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with examples. Wherein the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer ” refer to directions towards or away from the geometric center of a particular part, respectively.

[0024] Such as figure 1 , figure 2 and image 3 As shown, the welding production method of the bainite rail provided by the present invention includes the following steps: processing the first bainite rail 1 and the second bainite rail 2, the first bainite rail 1 includes the opposite arrangement along the length direction The first mounting end 3 and the first welding end 4 of the second bainite rail 2 include a second mounting end 5 and a second welding end 6 oppositely arranged along the length direction; the first...

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Abstract

The invention discloses a welding production method of bainite steel rails. The welding production method comprises the following steps that the first bainite steel rail and the second bainite steel rail are machined; a first mounting end and a second mounting end abut against a mounting face parallel to the horizontal plane, and the end face of a first welding end and the end face of a second welding end are placed in an abutting mode; the first welding end is obliquely arranged upwards, and the inclination angle between the first welding end and the mounting face is an acute angle beta 1; the second welding end is obliquely arranged upwards, the inclination angle between the second welding end and the mounting face is an acute angle beta 2, and beta 2 is equal to beta 1; the end face of the first welding end and the end face of the second welding end are in butt joint and welded, and a welding connector is formed; and the cooled welding connector is subjected to tempering process treatment. According to the welding production method of the bainite steel rails, the straightness of the welding connector of the bainite steel rails, the structural stress of the welding connector of the bainite steel rails and the service life of the welded bainite steel rails are guaranteed, and the rail replacement overhaul cost is reduced.

Description

technical field [0001] The invention relates to the technical field of rail welding, and more specifically, relates to a welding production method for bainite rails. Background technique [0002] Bainitic rails have good wear resistance and anti-stripping properties. If bainitic rails are applied to railway rails, the service life of heavy-duty railway rails can be improved, and the cost of rail replacement and overhaul can be reduced. [0003] Railway rails require several rails to be welded together in sequence to make long rails that can be used. When the rails are welded, a weld joint is formed at the weld, and due to the influence of welding high temperature and deformation, a certain amount of deformation will occur at the weld joint, affecting its straightness. At present, due to the relatively high yield strength of bainitic rails, if the welded joints of the welded bainitic rails are straightened to make the straightness of the welded joints meet the requirements o...

Claims

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Application Information

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IPC IPC(8): B23K31/02B23K37/00C21D9/50
CPCB23K31/02B23K37/00C21D9/50B23K2101/26B23K2103/04
Inventor 高文会赵智聪涂占宽王东倪峥嵘代韬
Owner METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI
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