A method of manufacturing a rail grinding wheel

A manufacturing method and grinding wheel technology, which is applied in the field of grinding wheel manufacturing, can solve problems such as grinding wheel breakage and glass fiber winding layer falling off

Inactive Publication Date: 2014-10-08
江苏新砺河磨具科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because there is usually a mold release agent on the outer circumference of the grinding wheel body, the glass fiber winding layer and the grinding wheel body cannot be bonded together, and the thermal expansion of the glass fiber winding layer and the grinding wheel body during grinding The cold shrinkage coefficient is different. Usually, in the second half of the service life of the grinding wheel, that is, after the grinding wheel has been ground for many days, the unconsumed glass fiber winding layer on the outer circumferential surface of the grinding wheel body will often fall off in part or in whole, that is, the grinding wheel is broken. possibility still exists

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for manufacturing a grinding wheel for rail grinding. The specification of the grinding wheel is 180×105×90 (D×T×Hmm) as an example. The manufacturing steps are as follows: (1) Firstly, the release agent on the outer peripheral surface of the grinding wheel body is removed, and the grinding wheel The main body is installed on the low speed shaft of the counter mill to make it rotate at a linear speed of 4m / s, and a Φ300mm cast iron wheel is installed on the high speed shaft of the counter mill to make it rotate at a linear speed of 6.5m / s. Cast iron shot blasting with a particle diameter of 0.85-1.18mm falls from above between the two wheels, and the cast iron shot blasting is forced to roll between the two wheels by the speed difference between the grinding wheel body and the cast iron wheel, squeezing the surface layer of the outer peripheral surface of the grinding wheel body The mold release agent adhered to the outer surface of the grinding wheel body when ...

Embodiment 2

[0021] A method for manufacturing a grinding wheel for rail grinding. The specification of the grinding wheel is 150×76×M20 (D×T×Hmm) as an example. The manufacturing steps are as follows: (1) Firstly, the release agent on the outer peripheral surface of the grinding wheel body is removed, and the grinding wheel The main body is installed on the low speed shaft of the counter mill to make it rotate at a linear speed of 4m / s, and a Φ300mm cast iron wheel is installed on the high speed shaft of the counter mill to make it rotate at a linear speed of 6.5m / s. Cast iron shot blasting with a particle diameter of 0.85-1.18mm falls from above between the two wheels, and the cast iron shot blasting is forced to roll between the two wheels by the speed difference between the grinding wheel body and the cast iron wheel, squeezing the surface layer of the outer peripheral surface of the grinding wheel body peel off, thereby grinding away the release agent adhered to the outer surface of th...

Embodiment 3

[0023]A method for manufacturing a grinding wheel for rail grinding. The specification of the grinding wheel is 260×90×152.4 (D×T×H mm) as an example. The manufacturing steps are as follows: (1) Firstly, the release agent on the outer peripheral surface of the grinding wheel body is removed, and the The grinding wheel body is installed on the low-speed shaft of the counter-mill to make it rotate at a linear speed of 4m / s, and a Φ300mm cast iron wheel is installed on the high-speed shaft of the counter-mill to make it rotate at a linear speed of 6.5m / s . Cast iron shot blasting with a particle diameter of 0.85-1.18mm falls from above between the two wheels, and the cast iron shot blasting is forced to roll between the two wheels by the speed difference between the grinding wheel body and the cast iron wheel, squeezing the surface layer of the outer peripheral surface of the grinding wheel body peel off, thereby grinding off the release agent adhered to the outer surface of the ...

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PUM

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Abstract

The invention discloses a manufacturing method of a steel rail grinding wheel; the grinding wheel body of a steel rail grinding wheel manufactured through the method in the invention is tightly combined with an alkali-free glass fiber intertwining layer; and the alkali-free glass fiber intertwining layer can have the protection effect for the grinding wheel body in the whole service life period of the grinding wheel. The strength of the grinding wheel manufactured through the method in the invention can achieve the level that the grinding wheel is not cracked through gyration checking at a speed of 1.8 times of national standard maximum operation speed.

Description

technical field [0001] The invention relates to a method for manufacturing a grinding wheel, in particular to a method for manufacturing a grinding wheel for rail grinding, and belongs to the technical field of grinding wheels. Background technique [0002] The rail grinding wheel is a special grinding wheel that uses the end face of the grinding wheel to grind the surface of the rail. Due to the instability of grinding conditions, in order to prevent the grinding wheel from being broken due to grinding impact, a winding layer is often added to the outer circumference of the grinding wheel. The usual winding layer is made of glass fiber impregnated with resin, which can enhance the strength of the grinding wheel body. The winding layer will be consumed as the thickness of the grinding wheel decreases, and the unconsumed winding layer still protects the grinding wheel body to be ground. However, because there is usually a mold release agent on the outer circumference of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D18/00
Inventor 仲怀民
Owner 江苏新砺河磨具科技有限公司
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