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Resin abrasive cutting wheel and manufacturing method thereof

A technology for cutting grinding wheels and resins, used in bonding grinding wheels, manufacturing tools, metal processing equipment, etc., can solve the problems of increasing costs, complex processes, increasing production costs, etc., and achieves high cutting efficiency, improved cutting performance, and is not easy to block. Effect

Active Publication Date: 2012-02-08
NINGBO DAHUA GRINDING WHEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the performance of brown corundum itself, the pure brown corundum abrasive can no longer meet the requirements of the current processing technology.
If in order to improve the processing performance, add other abrasives such as white corundum to the brown corundum, although the cutting performance is improved, but the cost is increased; if the cutting performance is improved by calcination and surface treatment of brown corundum, it will inevitably lead to complicated processes , on the other hand increases the production cost

Method used

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  • Resin abrasive cutting wheel and manufacturing method thereof
  • Resin abrasive cutting wheel and manufacturing method thereof
  • Resin abrasive cutting wheel and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The resin cutting grinding wheel to be prepared in this embodiment is a flat grinding wheel, such as figure 1 shown.

[0040] First, weigh raw materials with a certain mass ratio for batching. The types of raw materials and their weight percentage ratios are respectively 62-70% of brown corundum, 4-10% of black silicon carbide, 18-20% of phenolic resin, and the rest are fillers. Hemihydrate gypsum powder. Wherein, a part of the phenolic resin is liquid, and the rest is powder, and the mass ratio of the two is 1:2. Black silicon carbide is also in powder form, and brown corundum is between 24 and 36 mesh in size. Brown corundum with mixed grain size is used, so that the finer abrasive grains can be filled into the coarser abrasive grains, the gap between the abrasive grains is reduced, the specific surface area of ​​the abrasive grains is increased, the resin bond bridge is short and thick, and the grinding wheel is effectively improved. strength and grinding efficien...

Embodiment 2

[0046] The resin cutting grinding wheel to be prepared in this embodiment is a cymbal type grinding wheel, such as figure 2 shown.

[0047] Similarly, batching is carried out first, and the types of raw materials and their weight percentages are respectively 65% ​​of brown corundum, 5% of black silicon carbide, 19% of phenolic resin, 10% of hemihydrate gypsum powder, and 1% of carbon black. In the phenolic resin, the mass ratio of the liquid phenolic resin to the powdered phenolic resin is 1:4.

[0048] Then, carry out the same mixing and sieving steps as in the first embodiment.

[0049] The forming steps for cymbal wheels are slightly different from those for parallel wheels. Similarly, for example, if three grinding wheels are formed at one time, three parts of molding materials are weighed first, and each part is just or slightly more than the weight required to manufacture one resin cutting grinding wheel. Also put half of the molding material in the forming mold and sp...

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Abstract

The invention provides a resin abrasive cutting wheel and a manufacturing method thereof, belonging to the field of grinding tools. The resin abrasive cutting wheel solves the problem that the traditional brown corundum resin grinding wheel has low cost but bad cutting performance. The resin abrasive cutting wheel comprises a grinding body and a reinforcing sheet which is arranged inside the grinding body to reinforce the rotation strength of the grinding body, wherein the grinding body comprises the following raw materials in proportions by weight: 62-70% of brown corundum, 4-10% of black silicon carbide, 18-20% of phenolic resin and the balance of packing. The invention also provides a manufacturing method of the resin abrasive cutting wheel. According to the manufacturing method, the cutting performance of the abrasive cutting wheel is increased by increasing a special proportion of black silicon carbide under the condition that the cost is not increased.

Description

technical field [0001] The invention belongs to the field of grinding tools, and relates to a resin cutting grinding wheel and a preparation method thereof. Background technique [0002] Resin cutting grinding wheel is a sheet grinding wheel that uses resin as a binder to bond loose abrasives and consolidate them into a certain shape. It is mainly used for cutting metal profiles such as round steel, flat steel, steel pipe, and channel steel. Price is an important factor affecting the market share of numerical cutting grinding wheels, so brown corundum abrasives with lower prices become the first choice for manufacturing numerical cutting grinding wheels. However, limited by the performance of brown corundum itself, the pure brown corundum abrasive can no longer meet the requirements of the current processing technology. If in order to improve processing performance, add other abrasives such as white corundum to brown corundum, although the cutting performance is improved, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/28B24D7/04B24D18/00
Inventor 李保国张和平俞建成
Owner NINGBO DAHUA GRINDING WHEEL
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