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Resin grinding wheel for steel rail cutting and manufacturing method of resin grinding wheel

A technology for resin grinding wheels and rails, which is applied in the direction of bonded grinding wheels, manufacturing tools, abrasives, etc., can solve the problems of fast consumption of grinding edges, low removal efficiency of rail materials, high grinding heat, etc., to achieve improved bonding strength and Structural strength, improvement of self-sharpening and cutting efficiency, effects of improving toughness and structural strength

Inactive Publication Date: 2019-11-26
NO 2 GRIND WHEELS FACTORY & SHENZHEN UNION CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the corundum abrasive grinding wheel with resin bond is widely used in rail grinding trains. Because the resin bond has a weak holding force on the abrasive, the abrasive is easy to fall off, resulting in a short service life of the grinding wheel; The cutting edge consumes quickly and is easy to passivate, causing the grinding wheel to be not sharp enough in long-term use, resulting in high grinding heat, resulting in low removal efficiency of rail material, poor surface quality of rail grinding, and extremely prone to burn bluing

Method used

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  • Resin grinding wheel for steel rail cutting and manufacturing method of resin grinding wheel
  • Resin grinding wheel for steel rail cutting and manufacturing method of resin grinding wheel
  • Resin grinding wheel for steel rail cutting and manufacturing method of resin grinding wheel

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Experimental program
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Effect test

Embodiment 1

[0044] Embodiment 1: A resin grinding wheel for rail cutting, the formulation components and their contents are shown in Table 1 (1 part by weight=5kg). Wherein the phenolic resin powder is a thermoplastic phenolic resin, and the phenolic resin liquid is a thermosetting phenolic resin. The preparation method of the resin grinding wheel for rail cutting includes a mixing process and a forming process, and the mixing process includes the following steps:

[0045] A1. Mixing premix: take the material according to the formula, mix and stir single crystal corundum 24#, zirconium corundum 24# and silicon carbide 24# at the same time to form an abrasive, add phenolic resin liquid to the abrasive, mix evenly to form a premix mix;

[0046] A2. Mix coarse sand material: Potassium sulfate, high-purity pyrite powder and phenolic resin powder are mixed and stirred evenly to form a mixed powder, and the mixed material powder is mixed with the premix obtained in the A1 step, and mixed evenl...

Embodiment 2

[0052] Embodiment 2: A resin grinding wheel for rail cutting. The difference between this embodiment and Embodiment 1 lies in that the content of the formula components is different and the process parameters in the preparation method are different. The specific component contents of the formula of this embodiment are shown in Table 1, and the process parameters in the preparation method are shown in Table 3.

Embodiment 3

[0053] Embodiment 3: A resin grinding wheel for rail cutting. The difference between this embodiment and Embodiment 1 lies in that the content of the formula components is different and the process parameters in the preparation method are different. The specific component contents of the formula of this embodiment are shown in Table 1, and the process parameters in the preparation method are shown in Table 3.

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Abstract

The invention discloses a resin grinding wheel for steel rail cutting and a manufacturing method of the resin grinding wheel, and relates to the technical field of grinding wheel manufacturing and production. The formula includes the following components of, in parts by weight, 7 - 9 parts of monocrystalline fused alumina, 7 - 9 parts of fused zirconia alumina, 3.8 - 4.2 parts of silicon carbide,2.8 - 3.2 parts of a binding agent and 0.8 - 1.2 parts of potassium sulfate, wherein the binding agent comprises phenolic resin powder and phenolic resin liquid, and the weight part ratio of the phenolic resin powder to the phenolic resin liquid is 2 : 1 - 3 : 1. The manufacturing method of the resin grinding wheel for steel rail cutting comprises a material mixing process and a forming process, wherein the material mixing process comprises the following steps of A1, mixing and preparing a pre-mixing material; A2, mixing a coarse grinding material; and A3, screening the coarse grinding material; and the forming process comprises the following steps of B1, paving a forming material; B2, carrying out pressurizing and forming; and B3, carrying out drying and hardening. The resin grinding wheel for the steel rail cutting has the technical effects that the cutting efficiency is high, the resin grinding wheel is not easy to wear, so that the service life is long.

Description

technical field [0001] The invention relates to the technical field of manufacture and production of resin grinding wheels, in particular to a resin grinding wheel for rail cutting and a manufacturing method thereof. Background technique [0002] Resin grinding wheel is a grinding wheel made of resin, which has the characteristics of high strength, low heat resistance, good self-sharpening, easy production, short process cycle, etc. It is widely used in rough grinding, rough grinding, cutting and free grinding, such as grinding Steel ingots, deburring of castings, etc., often used as cutting discs, heavy-duty grinding wheels, polishing wheels, etc. Resin grinding wheels are widely used in mechanical metallurgy, construction, military industry, railway construction and other fields. They are mainly used for cutting and grinding general metal materials such as steel pipes, steel bars, and steel bars. [0003] Resin grinding wheels are generally divided into ordinary resin gri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D5/12B24D3/28B24D3/00B24D3/34B24D18/00
CPCB24D3/00B24D3/285B24D3/344B24D3/346B24D5/12B24D18/0009
Inventor 李凯韦球翁朝阳许涛
Owner NO 2 GRIND WHEELS FACTORY & SHENZHEN UNION CO
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