A hole-filling glue for adjusting the unbalance amount of the grinding wheel of rail milling and grinding vehicles and its application method

A technology for rail milling and grinding vehicles and balance weights, which is applied in the direction of grinding devices, grinding/polishing equipment, and parts of grinding machine tools, and can solve the problems of easily broken grinding wheels, small weight loss range, and heavy quality, and achieve a solution Static balance adjustment problem, overcome the effect of easy falling off

Active Publication Date: 2022-06-28
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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  • A hole-filling glue for adjusting the unbalance amount of the grinding wheel of rail milling and grinding vehicles and its application method

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Experimental program
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Embodiment approach

[0026] The performance of three different pore-filling resin proportioning schemes are now tested. The three different pore-filling glue resin proportioning schemes are shown in Table 1. The proportions of resin, curing agent and catalyst remain unchanged. The mechanical properties of different proportions of pore-filling glue are shown in Table 2, and the performance test results of different proportions of pore-filling glue are shown in Table 3.

[0027] Table 1 The ratio of different resin 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 different proportions of filling glue

[0030]

[0031] Table 3 The performance test results of different proportions of filling glue

[0032] Curing time (h) Fluidity(mm) Curing temperature(℃) Bonding strength (MPa) ...

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Abstract

The invention discloses a hole-filling glue for adjusting the unbalance amount of a grinding wheel of a rail milling and grinding vehicle and a method for using the hole-filling glue. (5.8% ~ 8.7%) by mixing the proportion. After curing, the tensile modulus of the potting glue is 1.5GPa, the shear modulus is 0.8GPa, the tensile strength is 24.5MPa, and the elongation at break is 8.0%. It is suitable for ceramic bonding with large outer diameter, heavy mass and no matrix. Grinding wheels for rail milling and grinding vehicles. The hole-filling glue for adjusting the unbalance amount of the grinding wheel of the rail milling and grinding vehicle provided by the invention can overcome the problems that the cement is easy to fall off, the appearance of the grinding wheel is affected by the heavy-duty drilling, and the grinding wheel is easily broken, and the problem of the static balance adjustment of the grinding wheel of the rail milling and grinding vehicle is solved.

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 of the grinding wheel of a rail milling and grinding car and a method for using the same. Background technique [0002] As the carrier of train operation, the surface of the rail will produce various diseases under the action of long-term alternating loads. The deteriorated wheel-rail relationship will seriously affect the safety and stability of the train operation and restrict the economy of railway transportation. benefit. Therefore, it is necessary to repair the damaged rail regularly to improve the contact relationship between the wheel and rail to a normal state. Rail milling and grinding car is an important equipment for on-line repair of rails today, and the market demand is large. The grinding wheel for rail milling and grinding car is a kind of grinding wheel specially used for grinding railway rails. ...

Claims

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Application Information

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Patent Type & Authority Patents(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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