Basalt fiber reinforced high-speed steel rail polishing grinding stone and preparation method thereof

A technology of basalt fiber and grinding stone, which is applied in the direction of grinding/polishing equipment, abrasive materials, grinding devices, etc. It can solve the problems of easy burning of rails, weak grinding ability, and poor self-sharpening, and achieves small wear and smooth grinding The effect of large amount and low grinding temperature

Active Publication Date: 2021-10-22
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the purpose of this invention is to provide a kind of basalt fiber reinforced high-speed rail grinding stone and its preparation method, to solve the problem of existing steel rail grinding stone There are problems such as poor self-sharpening, weak grinding ability, poor wear resistance, and easy to burn the rail

Method used

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  • Basalt fiber reinforced high-speed steel rail polishing grinding stone and preparation method thereof
  • Basalt fiber reinforced high-speed steel rail polishing grinding stone and preparation method thereof
  • Basalt fiber reinforced high-speed steel rail polishing grinding stone and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of basalt fiber reinforced high-speed steel rail grinding stone, its preparation method comprises the following steps:

[0023] 1. Basalt fibers (20 μm in diameter and 260 μm in length) were baked at 250°C for 12 hours, then soaked and etched with 40% NaOH solution for 1 hour, then dried at 80°C for 30 minutes, and finally dried at 80°C for 30 minutes. % silane coupling agent KH550 alcohol solution for 2 hours, and then dried at 80 ° C for 30 minutes to obtain modified basalt fiber.

[0024] 2. Weigh the millstone raw materials by weight: 100 parts of zirconium corundum, 100 parts of brown corundum, 6 parts of pyrite powder, 6 parts of cryolite, 6 parts of barite powder, 6 parts of calcium carbonate, 6 parts of copper powder, liquid 20 parts of epoxy resin, 20 parts of phenolic resin powder and 5 parts of modified basalt fiber.

[0025] 3. Use the vibration method to process the raw materials for 15 minutes, and then ball mill and mix the raw materials for 15 mi...

Embodiment 2

[0029] A kind of basalt fiber reinforced high-speed steel rail grinding stone, its preparation method comprises the following steps:

[0030] 1. Basalt fibers (10 μm in diameter and 40 μm in length) were baked at 200°C for 15 hours, then infiltrated and etched with 20% NaOH solution for 2 hours, then dried at 50°C for 60 minutes, and finally dried at 50°C for 60 minutes. % silane coupling agent KH550 alcohol solution for 1h, and then dried at 50°C for 60min to prepare modified basalt fiber.

[0031] 2. Weigh the millstone raw materials by weight: 80 parts of zirconium corundum, 80 parts of brown corundum, 4 parts of pyrite powder, 4 parts of cryolite, 4 parts of barite powder, 4 parts of calcium carbonate, 4 parts of copper powder, liquid 10 parts of epoxy resin, 10 parts of phenolic resin powder and 1 part of modified basalt fiber.

[0032] 3. Use the vibration method to process the raw materials for 10 minutes, and then ball mill and mix the raw materials for 30 minutes aft...

Embodiment 3

[0036] A kind of basalt fiber reinforced high-speed steel rail grinding stone, its preparation method comprises the following steps:

[0037] 1. Basalt fibers (25 μm in diameter and 325 μm in length) were baked at 500°C for 10 hours, then infiltrated and etched with NaOH solution with a mass fraction of 55% for 0.5 hours, then dried at 100°C for 20 minutes, and finally mixed with a mass fraction of Soak in 5% alcohol solution of silane coupling agent KH550 for 3 hours, then dry at 100°C for 20 minutes to prepare modified basalt fiber.

[0038] 2. Weigh the millstone raw materials by weight: 120 parts of zirconium corundum, 120 parts of brown corundum, 10 parts of pyrite powder, 10 parts of cryolite, 10 parts of barite powder, 10 parts of calcium carbonate, 10 parts of copper powder, liquid 25 parts of epoxy resin, 25 parts of phenolic resin powder and 10 parts of modified basalt fiber.

[0039] 3. Use the vibration method to process the raw materials for 50 minutes, and then ...

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Abstract

The invention discloses a basalt fiber reinforced high-speed steel rail polishing grinding stone and a preparation method thereof. The raw material of the grinding stone contains modified basalt fibers, and a modification method of the basalt fibers comprises the steps that the basalt fibers are subjected to high-temperature baking, then soaked and etched with a NaOH solution, dried after being soaked and etched, then soaked with an alcoholic solution containing a silane coupling agent KH550 and dried after being soaked. and drying after soaking. A millstone can be prepared by mixing, molding and sintering the raw materials of the millstone. The polishing grinding stone has the advantages of high strength, high toughness and strong exposure capability. The grinding amount of the grinding stone is large, the abrasion loss is small, the spark amount is large and even in the grinding process, the grinding temperature is low, the ground steel rail is good in surface quality, and the steel rail is not prone to being burnt.

Description

technical field [0001] The invention relates to the technical field of rail grinding stone manufacturing, in particular to a basalt fiber reinforced high-speed rail grinding stone and a preparation method thereof. Background technique [0002] Due to the dynamic effect of the train, the influence of the natural environment and the quality of the rail itself, the rail is often damaged, such as corrugation, fish scales, falling blocks, fat edges and scratches on the surface, which shortens the life of the rail. , Affect driving safety and stability and other issues. Rail grinding technology is an important rail repair and maintenance technology that has emerged at home and abroad in recent years. The rail surface is polished by grinding stones to eliminate surface defects and surface diseases, and restore the rail profile to the original design requirements, thereby slowing down the rail surface. The development of defects can improve the smoothness of the rail surface, which...

Claims

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Application Information

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IPC IPC(8): B24D3/28B24D3/34B24D18/00C03C25/68C03C25/40C03C25/16
CPCB24D3/28B24D3/34B24D18/0009C03C25/68C03C25/40C03C25/16
Inventor 樊小强刘长宝李浩朱旻昊
Owner SOUTHWEST JIAOTONG UNIV
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