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Zirconium-plated carbonized high-strength heat-dissipation rail cutting grinding wheel formula and process

A high-strength technology for cutting grinding wheels, which is applied in the direction of manufacturing tools, metal processing equipment, abrasives, etc., can solve the problems of reducing the service life of the grinding wheel, burning the grinding wheel, and oxidation at the incision, so as to improve the bonding strength, increase the breaking speed, and improve the self- sharp effect

Inactive Publication Date: 2021-01-01
金华市国泰砂轮研磨有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a formulation and process of a zirconium-coated carbonized high-strength heat-dissipating rail cutting grinding wheel, which can improve the breaking speed of the grinding wheel, improve the bonding strength between the internal particles of the grinding wheel, and at the same time improve the The advantages of self-sharpening, reducing heat generation, etc., solve the problem of high force during the cutting process, and the safety requirements for cutting rail grinding wheels are also higher than those of ordinary grinding wheels. The self-sharpening ability is poor, and a lot of heat is easy to be generated during the cutting process. If it cannot be dissipated in time, on the one hand, it will burn the grinding wheel and reduce the service life of the grinding wheel; on the other hand, it will burn the rail and cause oxidation at the cut

Method used

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Effect test

Embodiment 1

[0022] In a typical implementation of the present application, a zirconium-coated carbonized high-strength heat-dissipating rail cutting grinding wheel formula mainly includes the following components in weight percentage: 39.22% zirconium-coated white corundum, 19.61% calcined corundum, and 19.61% brown corundum. %, iron sulfide 2.35%, cryolite 4.71%, KEP 21.57%, carbon black 0.39%, resin 12.55%.

[0023] Further, in the above scheme, the zirconium-coated white corundum is a mixture of alumina, sodium oxide and silicon dioxide, the particle diameter is 0.4-1.2mm, and the high-temperature zirconium-coated white corundum is a high-temperature-treated white corundum abrasive. Intensive processing, after high temperature heating, a new type of abrasive is made after coating a layer of zirconia on the surface of the abrasive by a certain process. The product has a large specific surface area, strong hydrophilicity, uniform particle size, high purity, and strong adhesion. , high cu...

Embodiment 2

[0029] In order to overcome the deficiencies in the prior art, the present invention also provides a kind of zirconium-coated carbonized high-strength heat dissipation rail cutting grinding wheel technology, the concrete steps are as follows:

[0030] S1: Mix the raw materials of zirconium-plated white corundum, calcined corundum and brown corundum into a mixer for full mixing and uniformity, and add KEP2 ingredients during the mixing process to form a compound;

[0031] S2: Put the mixture into the ten-station molding machine / 14MPA, add two 5-mesh 400g glass fiber nets to the ten-station molding machine / 14MPA and press to form;

[0032] S3: Put the compressed mixture into the tunnel kiln for 24 hours to fully harden it.

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Abstract

The invention relates to the technical field of rail cutting, and discloses a zirconium-plated carbonized high-strength heat-dissipation rail cutting grinding wheel formula and process. The grinding wheel formula mainly comprises the following components in percentage by weight: 39.22% of zirconium-plated white corundum, 19.61% of calcined corundum, 19.61% of brown fused alumina, 2.35% of iron sulfide, 4.71% of cryolite, 21.57% of KEP, 0.39% of carbon black and 12.55% of resin. According to the problems, such as machine requirements of a high rotating speed, high power and large stress in theworking process of the grinding wheel, and high safety coefficient requirements on the grinding wheel, of an existing rail cutting grinding wheel, the formula is provided.

Description

technical field [0001] The invention relates to the technical field of rail cutting, in particular to a formula and process for a zirconium-coated carbonized high-strength heat-dissipating rail cutting grinding wheel. Background technique [0002] At present, the grinding wheel for rail cutting is mainly made of brown corundum as the main raw material, phenolic resin as the binder, and glass fiber mesh as the reinforcing material. It is formed by machine pressing and cured at high temperature. The force is high during the process, and the safety requirements for the rail cutting grinding wheel are higher than those of ordinary grinding wheels (requiring a higher fracture speed), so the forming pressure of the grinding wheel increases accordingly, and the tissue density also increases. In addition, brown corundum has high toughness and self-sharpening The ability is poor, and it is easy to generate a lot of heat during the cutting process. If the heat cannot be dissipated in ...

Claims

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Application Information

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IPC IPC(8): B24D18/00B24D3/02
CPCB24D18/0009B24D3/02
Inventor 李绍平
Owner 金华市国泰砂轮研磨有限公司
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