Steel rail milling and grinding vehicle grinding wheel unbalance amount adjusting hole filling glue and using method thereof

A technology for rail milling and grinding vehicles and balancing weights, which is applied in the direction of grinding devices, grinding machine parts, grinding/polishing equipment, etc., and can solve the problems of easily broken grinding wheels, small weight loss range, and large outer diameter of grinding wheels. Achieve the effect of solving the problem of static balance adjustment and overcoming the problem of easy falling off

Active Publication Date: 2021-05-07
CHINA RAILWAY LONGCHANG MATERIALS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the case where the grinding wheel of the rail milling and grinding vehicle is a vitrified bond grinding wheel, since this grinding wheel has no matrix and the porosity of the grinding part is relatively large, but the outer diameter of the grinding wheel is large and the weight is heavy, if the weight is balanced by drilling holes, it will affect The appearance of the grinding wheel and the range of weight loss is small. If the weight loss is too much, the strength of the grinding wheel will be reduced, resulting in the grinding wheel being easily broken

Method used

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  • Steel rail milling and grinding vehicle grinding wheel unbalance amount adjusting hole filling glue and using method thereof

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Embodiment approach

[0026] The performance test of three different hole-filling glue resin ratio schemes is now carried out. The three different hole-filling glue resin ratio schemes are shown in Table 1. The ratio of resin, curing agent, and catalyst remains unchanged. The mechanical properties of hole-filling glue with different proportions are shown in Table 2, and the performance test results of hole-filling glue with different proportions are shown in Table 3.

[0027] Table 1 Resin ratio of different schemes

[0028] Proportion (%) Novolac resin liquid epoxy resin solid epoxy resin Option One 12.6 11.5 75.9 Option II 15.1 11.7 73.2 third solution 20.0 12.1 67.9

[0029] Table 2 Mechanical properties of hole-filling glue with different proportions

[0030]

[0031] Table 3 Performance test results of different proportions of hole-filling glue

[0032] Curing time (h) Fluidity (mm) Curing temperature (°C) Bond strength (MPa) ...

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Abstract

The invention discloses steel rail milling and grinding vehicle grinding wheel unbalance amount adjusting hole filling glue and using method thereof. The hole filling glue is formed by mixing mixed resin, a curing agent and a catalyst according to the proportion of (81.5%-82.9%): (9.8%-11.3%): (5.8%-8.7%). The tensile modulus of the cured hole filling glue is 1.5GPa, the shear modulus is 0.8GPa, the tensile strength is 24.5MPa, the elongation at break is 8.0%, and the hole filling glue is suitable for the ceramic bond steel rail milling and grinding vehicle grinding wheel which is large in outer diameter, heavy in mass and free of a base body. The steel rail milling and grinding vehicle grinding wheel unbalance amount adjusting hole filling glue can solve the problems that daub is prone to falling off, the appearance of a grinding wheel is influenced by de-weight drilling, and the grinding wheel is prone to breaking, and solves the problem of static balance adjustment of the grinding wheel of a steel rail milling and grinding vehicle.

Description

technical field [0001] The invention belongs to the field of grinding wheel processing, and in particular relates to a hole-filling glue for adjusting the unbalance amount of a grinding wheel of a rail milling and grinding vehicle and a use method thereof. Background technique [0002] As the carrier of train operation, rails will have various diseases on their surface under long-term alternating loads. The deteriorated wheel-rail relationship will seriously affect the safety and stability of train operation, restricting the economy of railway transportation. benefit. Therefore, it is necessary to repair the damaged rail regularly to improve the wheel-rail contact relationship to a normal state. Rail milling and grinding vehicles are important equipment for on-line repair of rails, and the market demand is large. The grinding wheel for rail milling and grinding vehicles is a special grinding wheel for grinding railway rails. Its performance directly determines the effect of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D18/00B24B41/04
CPCB24D18/0009B24D18/009B24B41/042
Inventor 熊好羽庾正伟付英志曹佐权王世海张越
Owner CHINA RAILWAY LONGCHANG MATERIALS
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