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Bainite welding rod dedicated for repairing rail and assembled frog

A technology of bainite and steel rails, which is applied in welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of inconvenient construction and repair on site, increase cost, etc., achieve excellent hardness, increase crack resistance, improve The effect of the transition factor

Inactive Publication Date: 2006-09-06
XIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this electrode is that it needs to be preheated during welding repair, and it needs to be processed after welding, which not only increases the cost, but also brings great inconvenience to on-site construction and repair.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The welding core of this embodiment is HO8Mn welding wire, and the ratio of each component of the coating is: marble 37%, fluorite 15%, quartz 10%, titanium dioxide 4%, rare earth ferrosilicon 5%, titanium ferrosilicon 5%, ferromanganese 10%, ferrosilicon 4%, ferrochromium 4%, ferromolybdenum 2%, metal nickel 2%, boron iron 2%, the water glass binder added in the coating is 30% based on the dry powder formula of the coating . Electrode baking process: 300~350℃, 2~3 hours.

Embodiment 2

[0023] The welding core of this embodiment is HO8Mn2SiA welding wire, and the ratio of each component of the coating is: marble 40%, fluorite 17%, quartz 8%, titanium dioxide 6%, rare earth ferrosilicon 5%, titanium ferrosilicon 5.7%, ferromanganese 8%, 3% ferrosilicon, 3% ferrochromium, 2% ferromolybdenum, 2% metallic nickel, 0.3% ferrovanadium, the water glass binder added to the coating is 20% based on the dry powder formula of the coating . Electrode baking process: 300~350℃, 2~3 hours.

Embodiment 3

[0025] The welding core of this embodiment is HO8MnA welding wire, and the ratio of each component of the coating is: marble 45%, fluorite 10%, quartz 5%, titanium dioxide 8%, rare earth ferrosilicon 8%, titanium ferrosilicon 3.8%, ferromanganese 6%, 5% ferrosilicon, 4% ferrochromium, 3% ferromolybdenum, 2% nickel metal, 1% ferroboron, 0.2% ferrovanadium, the water glass binder added in the coating is based on the dry powder formula of the coating The benchmark counts as 10%. Electrode baking process: 300~350℃, 2~3 hours.

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Abstract

The invention relates to a special bainite weld rod for repairing railway steel rail and assembled frog crossing which is formed by a weld core and a shield, wherein, the weld core is H08A, H08Mn, H08MnA, H08Mn2SiA, or H08Mn2MoA solder wire, and the shield comprises: marble in 30-50%, fluorite in 10-20%, silicon in 5-20%, titanium dioxide in 1-10%, rare-earth ferrosilicon in 2-10%, ferrotitanium in 3-20%, ferromanganese in 5-20%, ferrosilicon in 1-5%, chromium iron in 1-8%, ferro-molybdenum in 0.1-5%, metal nickel in 0.1-5% and soluble glass adhesive in 10-30%. The inventive weld rod has better welding property and application property which can improve the repairing welding, the tenacity and the compactness of repairing layer, increase the crack resistance of welding fusing coat, attain the impact resistance, and prolong the service life of steel rail and frog crossing. And it can be welded without preheating.

Description

1. Technical field [0001] The invention belongs to the technical field of welding electrodes, in particular to a special bainitic electrode for repairing railway rails and combined frogs. The welding rod can be directly repaired by welding, and the strength, toughness, hardness and wear resistance of the repaired layer are better than or close to the repaired steel rail and frog core rail. 2. Background technology [0002] In order to meet the needs of my country's railway speed-up development, in recent years, the traditional railway rails and high-manganese steel frogs used in some sections have been replaced with high-performance, long-life bainite rails and bainite composite ruts. cross. Although bainite rails and bainite composite frogs are better in wear resistance, impact resistance, compression resistance, and bending resistance than traditional railway rails and high-manganese steel frogs, and have a longer service life, but in Under the repeated impact, pressure, ...

Claims

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Application Information

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IPC IPC(8): B23K35/365C22C38/40C22C38/58C22C38/54
Inventor 栾道成王正云
Owner XIHUA UNIV
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