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High carbon steel rail and high manganese steel frog welding technology

A welding process, high-carbon steel technology, applied in the direction of welding equipment, welding equipment, auxiliary welding equipment, etc., to achieve the effect of flexible and convenient operation, less investment in welding equipment and tooling, and less investment in factory construction

Inactive Publication Date: 2003-09-17
唐山铁路道岔厂 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Shanhaiguan Bridge Factory, Yanshan University, Tianjin University, and Dalian Railway Institute have also done a lot of research work on the secondary flash butt welding method with a medium layer, but so far, it is still in the basic research stage

Method used

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  • High carbon steel rail and high manganese steel frog welding technology
  • High carbon steel rail and high manganese steel frog welding technology

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Experimental program
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Effect test

Embodiment

[0035] Using the method of manual arc welding, using the welding consumables shown in Table 1, using figure 1The welding process shown in , the high manganese steel short rail (length 600mm) and high carbon steel rail (length 600mm) standard parts were welded in batches. The static bending test and fatigue test were carried out by the Product Quality Supervision and Inspection Center of the Ministry of Railways, the mechanical properties of the welded joints were tested, and the metallographic structure analysis of the welded joints was carried out. The test results are shown in Table 2-Table 5. The above test results all meet and exceed the technical index requirements of relevant domestic and foreign standards, especially the static bending and fatigue test data are very close and stable, and the fractured parts are not in the welded joints. According to the metallographic analysis results, there is no carbide precipitation and hardened structure in the heat-affected zone. ...

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Abstract

A technology for welding high-C steel rail and high-Mn steel switch fork of railway includes such steps as build-up welding of Cr-Ni-Mo alloy transition layer on the steel rail, build-up welding of Mn-Cr-Ni alloy transition layer on the switch fork and solid dissolving, matching their U-shaped bevel joint surfaces, and manual arc welding. Its advantages are high welding quality and stability and low cost.

Description

[0001] Field: [0002] The invention relates to a high-manganese steel and high-carbon steel welding process, which is mainly used for welding high-manganese steel rails and high-manganese steel frogs, and is also suitable for welding or repairing high-manganese steel and high-carbon steel components. Background technique: [0003] Through on-the-spot investigation and research, and through the international online science and technology novelty search, the technical background of the present invention and the current domestic and foreign situation are as follows: [0004] Due to the great difference in chemical composition, physical properties and mechanical properties of the two materials used for welding high manganese steel frogs and high carbon steel rails, their weldability is extremely poor. When high carbon steel is welded, it is easy to produce hardened structure, and the welding stress is large, which will lead to the generation of cold cracks. When high manganese s...

Claims

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Application Information

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IPC IPC(8): B23K31/00B23K37/00
Inventor 郭面焕谷玉忠邵德春张普庆刘连斌郭兴臣
Owner 唐山铁路道岔厂
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