Heavy-load resin grinding wheel for billet grinding and manufacturing method thereof

A resin grinding wheel and manufacturing method technology, applied in grinding devices, manufacturing tools, grinding/polishing equipment, etc., can solve the problems of brittle failure of abrasive grains and the overall brittle failure of grinding wheels, so as to reduce brittle failure, prevent cracks, reduce grinding The effect of cutting ratio improvement

Active Publication Date: 2019-05-17
昆山鑫轮超硬磨具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the technical problems of brittle damage of abrasive particles and overall brittle damage of the grinding wheel existing in the prior art when grinding a billet under heavy load, provide a heavy-duty grinding wheel for billet grinding. Resin grinding wheel and manufacturing method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This embodiment provides a method for manufacturing a heavy-duty resin grinding wheel (model specification / D x T x H / mm is 200x 20x 76) for billet grinding, the steps are as follows:

[0022] Add 1.5 parts by weight of wetting agent to 45 parts by weight of abrasive grains and stir thoroughly until the wetting agent fully infiltrates the abrasive grains, then add 0.5 parts by weight of coating material powder and stir thoroughly so that the coating material powder is fully wrapped on the surface of the abrasive grains, and the obtained Coated abrasive grains; wherein: the coating material is polyvinyl butyral powder (with a particle size of 325 U.S. mesh), and the modulus of elasticity of the coating material is 20000kgf / сm 2 ; The abrasive grains are a mixture of zirconium corundum powder (the particle size is 5#) and brown corundum powder (the particle size is 60#) with a mass ratio of 40:5, and the wetting agent is furfural and polyamide with a mass ratio of 2:1 Mixt...

Embodiment 2

[0028] This embodiment provides a method for manufacturing a heavy-duty resin grinding wheel (model specification / D x T x H / mm is 200x 20x 76) for billet grinding, the steps are as follows:

[0029] Add 2 parts by weight of wetting agent to 55 parts by weight of abrasive grains and stir thoroughly until the wetting agent fully infiltrates the abrasive grains, then add 3 parts by weight of coating material powder and stir thoroughly so that the coating material powder is fully wrapped on the surface of the abrasive grains, and the obtained Coated abrasive grains; wherein: the coating material is polyvinyl butyral powder (with a particle size of 400 U.S. mesh), and the modulus of elasticity of the coating material is 22000kgf / сm 2 The abrasive grains are a mixture of zirconium corundum powder (30# in particle size) and brown corundum powder (150# in particle size) with a mass ratio of 45:10, and the wetting agent is furfural and polyamide with a mass ratio of 5:1. Mixtures of di...

Embodiment 3

[0035] This embodiment provides a method for manufacturing a heavy-duty resin grinding wheel (model specification / D x T x H / mm is 200x 20x 76) for billet grinding, the steps are as follows:

[0036] Add 1.8 parts by weight of wetting agent to 50 parts by weight of abrasive grains and stir fully until the wetting agent fully infiltrates the abrasive grains, then add 1.75 parts by weight of coating material powder and stir thoroughly so that the coating material powder is fully wrapped on the surface of the abrasive grains, and the obtained Coated abrasive grains; wherein: the coating material is polyvinyl butyral powder (with a particle size of 400 U.S. mesh), and the modulus of elasticity of the coating material is 22000kgf / сm 2 ; The abrasive grains are a mixture of zirconium corundum powder (particle size is 20#) and brown corundum powder (particle size is 100#) with a mass ratio of 45:10, and the wetting agent is furfural and polyamide with a mass ratio of 3:1 Mixtures of d...

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Abstract

The invention relates to a heavy-load resin grinding wheel for billet grinding and a manufacturing method thereof. The manufacturing method comprises the steps that a coating material is used for forming a coating film on the abrasive particle surfaces, and coated abrasive particles are obtained; the coated abrasive particles and a binding agent are mixed, and a molding material is obtained; hot pressing is carried out on the molding material to obtain a grinding wheel blank; heat treatment is carried out on the grinding wheel blank, and the heavy-load resin grinding wheel for billet grindingis manufactured; and the elastic modulus of the coating material is at least 12% lower than the elastic modulus of the binding agent, wherein the coating material comprises polyvinyl butyral powder, the polyvinyl butyral powder accounts for more than 65% of the mass fraction of the coating material, and the binding agent is a mixture of thermosetting resin powder, pyrite powder, cryolite powder, lime powder and the binding agent. By means of the method, the impact load generated in the grinding wheel grinding process is weakened, damage of impact force generated during grinding to the abrasiveparticles can be effectively reduced, brittle failures in the using process of the grinding wheel are effectively reduced, and the grinding ratio of the grinding wheel is improved.

Description

technical field [0001] The invention relates to a heavy-duty resin grinding wheel for steel billet grinding and a manufacturing method thereof, belonging to the technical field of abrasive tool manufacturing. Background technique [0002] During the hot-rolling billet operation in the steel rolling mill, various defects such as oxide layer often appear on the surface of the billet. At this time, it is necessary to use a heavy-duty grinding wheel to perform strong grinding on the billet surface to remove the surface defects. In order to improve the grinding efficiency, the speed of the grinding wheel needs to be as high as 80m / s or more during the grinding process, and the grinding wheel needs to exert a lot of pressure on the billet. At this time, the grinding wheel will be accompanied by a strong impact load. [0003] Usually, after the grinding wheel used for billet grinding is used for a short period of time, there will be a large number of broken abrasive grains and pits...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/28B24D18/00
Inventor 刘一来邓希庆刘太戈
Owner 昆山鑫轮超硬磨具有限公司
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