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Heavy-load grinding wheel and preparation method thereof

A heavy-duty grinding wheel and sintered corundum technology, which is applied in the field of abrasive tools, can solve the problems of small grinding ratio, poor toughness, and weak impact resistance, so as to increase the cutting ratio, improve the bonding force and toughness, and improve the impact resistance. effect of ability

Inactive Publication Date: 2013-06-12
泰州苏蒙砂轮有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention mainly aims at the practical problems of poor toughness, weak impact resistance and small grinding ratio of the heavy-duty grinding wheel in the prior art, and achieves The purpose of improving the toughness of heavy-duty grinding wheels, reducing cutting heat and increasing cutting ratio

Method used

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  • Heavy-load grinding wheel and preparation method thereof

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with embodiment.

[0035] The components of the heavy-duty grinding wheel are measured by percentage as follows: 30% to 40% of sintered corundum, 20% to 35% of zirconium corundum, 5% to 15% of brown corundum, 0.5% to 2% of coupling agent, and 8% to phenolic resin powder 10%, elastic polyvinyl chloride powder 1%-2%, cryolite powder 3%-10%, light calcium carbonate powder 3%-8%, impregnated chopped glass fiber 4%-6%. In the present invention, the particle size numbers of the granular materials of each component are different, sintered corundum F14~F16, zirconium corundum F8~F10, brown corundum F16~F20, phenolic resin powder F200~F220, elastic polyvinyl chloride powder F550~F600, cryolite powder F380-F400, light calcium carbonate micropowder F380-F400, the length of the dipped chopped glass fiber is 4mm-6mm. The coupling agent is any one of isopropyl titanate, tetrabutyl titanate or isopropyl trihydroxyac...

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Abstract

The invention discloses a heavy-load grinding wheel. The heavy-load grinding wheel comprises the following components in percentage by weight: sintered corundum, fused alumina zirconia, brown fused alumina, a coupler, phenol-formaldehyde resin powder, elastic polyvinyl chloride powder, cryolite powder, light calcium carbonate micro powder and impregnation chopped glass fibers and is prepared by a hot pressing molding process. The elastic polyvinyl chloride resin powder is mixed in a grinding material, so that the tenacity and the shock absorbing effect of the grinding wheel are improved, and the probability of sheet blasting is greatly reduced. On the other hand, elastic polyvinyl chloride has excellent flame resistance, so that burning of grinding heat to phenol-formaldehyde resin is reduced, the bonding ability of the phenol-formaldehyde resin to the grinding material is improved, and the grinding ratio of the grinding wheel is improved. The coupler is used for modifying the surface of the phenol-formaldehyde resin, so that the interface bonding force between the organic resin and the inorganic grinding material is stronger, and the rotation strength of the grinding wheel is improved. Furthermore, due to the adoption of the impregnation chopped glass fibers, the dissolving ability of the phenol-formaldehyde resin is favorably enhanced, and the rotation strength of the grinding wheel is further improved.

Description

technical field [0001] The invention relates to an abrasive abrasive tool, in particular to a heavy-duty grinding wheel for grinding the surface of a billet and a preparation method thereof. Background technique [0002] Steel billets are crude steel products, and their surface layer is relatively rough, and some even have defects such as burrs. Before billets are used for rolling profiles, they are usually surface ground with heavy-duty grinding wheels to improve the quality of profile rolling. The heavy-duty grinding wheel in the prior art belongs to the conventional resin grinding wheel, which is characterized by low price, but soft structure, poor toughness and weak impact resistance. Grinding under conventional process conditions, that is, the outer contour line speed of the heavy-duty grinding wheel is 80m / s, and a force of about 10,000N is applied. When the heavy-duty grinding wheel touches the billet, it is easy to burst the edge because it cannot withstand the impa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/28B24D3/34B24D18/00
Inventor 严光华孔德轮严亮严飞
Owner 泰州苏蒙砂轮有限公司
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