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Grinding wheel special for rail grinding train and manufacturing method of grinding wheel

A technology for grinding trains and grinding wheels, which is applied in the direction of grinding/polishing equipment, grinding devices, manufacturing tools, etc., which can solve the problems of easily burned rails, weak grinding ability, poor self-sharpening, etc., so that it is not easy to block and grind Strong ability, effect of increasing porosity

Active Publication Date: 2018-12-11
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of poor self-sharpening, weak grinding ability, and easy to burn the rails existing in the existing domestically-made rail grinding wheels for trains, and to provide a high-strength, good self-sharpening, strong grinding ability, and cutting efficiency. Special grinding wheel for rail grinding train with high height and not easy to burn rail during grinding process and preparation method thereof

Method used

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  • Grinding wheel special for rail grinding train and manufacturing method of grinding wheel
  • Grinding wheel special for rail grinding train and manufacturing method of grinding wheel
  • Grinding wheel special for rail grinding train and manufacturing method of grinding wheel

Examples

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Comparison scheme
Effect test

Embodiment 1

[0043] The special grinding wheel for grinding rails in this embodiment comprises: in parts by weight, 25 parts of modified zirconium corundum, 55 parts of modified brown corundum, 9 parts of mixed resin, 3 parts of alumina hollow balls, 1.5 parts of pyrite powder, ice crystal 1 part of stone powder, 0.5 part of barium sulfate powder, 0.5 part of calcium carbonate powder, 0.5 part of graphite powder, 6 parts of copper powder and 8 parts of fiber reinforced material.

[0044] Wherein the mixed resin comprises 6 parts of polyimide resin powder and 3 parts of epoxy resin liquid.

[0045] The preparation method of the rail grinding train special emery wheel of the present embodiment comprises:

[0046] (1) Mixing

[0047] (11) Pyrite powder, cryolite powder, barium sulfate powder, calcium carbonate powder, graphite powder, copper powder and fiber reinforced material are ground and mixed at a ball-to-material ratio of 1:1 and a rotating speed of 380r / min to obtain a filler;

[00...

Embodiment 2

[0057] The special grinding wheel for grinding rails in this embodiment comprises: in parts by weight, 30 parts of modified zirconium corundum, 45 parts of modified brown corundum, 12 parts of mixed resin, 5 parts of alumina hollow balls, 5 parts of pyrite powder, ice crystal 2 parts of stone powder, 2 parts of barium sulfate powder, 2 parts of calcium carbonate powder, 2 parts of graphite powder, 3 parts of copper powder and 2 parts of fiber reinforced material.

[0058] Wherein the mixed resin comprises 8 parts of phenolic resin powder and 4 parts of water-soluble phenolic resin liquid.

[0059] The preparation method of the rail grinding train special emery wheel of the present embodiment comprises:

[0060] (1) Mixing

[0061] (11) Pyrite powder, cryolite powder, barium sulfate powder, calcium carbonate powder, graphite powder, copper powder and fiber reinforced material are ground and mixed at a ball-to-material ratio of 1:1 and a rotating speed of 400r / min to obtain a f...

Embodiment 3

[0071] The special grinding wheel for grinding rails in this embodiment comprises: in parts by weight, 30 parts of modified zirconium corundum, 35 parts of modified brown corundum, 9 parts of mixed resin, 3 parts of alumina hollow balls, 8 parts of pyrite powder, ice crystal 6 parts of stone powder, 3 parts of barium sulfate powder, 4 parts of calcium carbonate powder, 3 parts of graphite powder, 5 parts of copper powder and 4 parts of fiber reinforced material.

[0072] Wherein the mixed resin comprises 5.5 parts of polyimide resin powder and 3.5 parts of water-soluble phenolic resin liquid.

[0073] The preparation method of the rail grinding train special emery wheel of the present embodiment comprises:

[0074] (1) Mixing

[0075] (11) Pyrite powder, cryolite powder, barium sulfate powder, calcium carbonate powder, graphite powder, copper powder and fiber reinforced material are ground and mixed at a ball-to-material ratio of 1:1 and a rotating speed of 420r / min to obtain...

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Abstract

The invention discloses a grinding wheel special for a rail grinding train and a manufacturing method of the grinding wheel, and relates to the technical field of manufacturing of grinding wheels. Thegrinding wheel special for the rail grinding train comprises, by weight, 25-35 parts of modified zirconia alumina, 35-55 parts of modified brown fused alumina, 9-15 parts of mixed resin, 3-5 parts ofaluminum oxide hollow balls, 1.5-8 parts of pyrite powder, 1-6 parts of cryolite powder, 0.5-5 parts of barium sulfate powder, 0.5-4 parts of calcium carbonate powder, 0.5-4 parts of graphite powder,3-6 parts of copper powder and 1-8 parts of fiber-reinforced materials, wherein the modified zirconia alumina and the modified brown fused alumina are fused alumina zirconia and brown fused alumina which are dried after being soaked in a KH550 alcohol solution with the concentration of 3-10wt%. The grinding wheel special for the rail grinding train is high in strength, good in tenacity, good in self sharpness and high in grinding capacity; blockage is unlikely to occur in the grinding process; a steel rail is unlikely to be burnt in the polishing process; and the steel rail has good surface quality after being polished by the grinding wheel.

Description

technical field [0001] The invention relates to the technical field of grinding wheel manufacturing, in particular to a special grinding wheel for rail grinding trains and a preparation method thereof. Background technique [0002] Railway transportation is an important national infrastructure and the main artery of the national economy. As one of the key components of the railway system, the rail has been subjected to the dynamic action of the train and the natural environment for a long time, resulting in wear, damage, and fatigue of the rail head. These diseases will affect the function of the railway transportation system, resulting in the reduction of the life of the rail and the increase of maintenance workload and cost, and even directly affect the life of the track system and the safety and stability of the vehicle. The main measure of railway rail maintenance in the world at present is to adopt the rail grinding train to polish the rails. In rail grinding technolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00
CPCB24D18/0009
Inventor 樊小强章武林张鹏飞严涵李文朱旻昊
Owner SOUTHWEST JIAOTONG UNIV
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