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Angle grinding sheet and preparation method thereof

An angle grinding disc and rough grinding technology, used in grinding/polishing equipment, abrasives, grinding devices, etc., can solve problems such as easy to drop blocks, and achieve the effect of not easy to drop blocks, good balance, and uniform grinding wheel wear.

Pending Publication Date: 2022-02-11
NINGBO DAHUA GRINDING WHEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the use of the angle grinding disc, when the abrasive grains are blunt, due to the partial fragmentation of the abrasive grain itself or the fracture of the bond, the abrasive grains fall off from the angle grinding disc partially or completely, and the abrasive on the working surface of the angle grinding disc constantly appears new cutting edge, or constantly reveal new sharp abrasive grains, so that the abrasive tool can maintain the cutting performance for a certain period of time, but the non-grinding surface of the current angle grinding disc is easy to fall off when grinding the workpiece, and its overall physical properties need to be further improved

Method used

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  • Angle grinding sheet and preparation method thereof
  • Angle grinding sheet and preparation method thereof
  • Angle grinding sheet and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] S1. Weigh and mix the coarse material and the fine material according to the following mass percentages for subsequent use, then sieve the coarse material through a 14-mesh sieve, and sieve the fine material through a 40-mesh sieve;

[0040] Coarse material: 8% cryolite, 6% phenolic resin solution, 12% phenolic resin powder, 20% brown corundum with particle size F22, 30% brown corundum with particle size F24, 24% white corundum with particle size F30;

[0041] Fine material: 3% cryolite, 5% epoxy resin, 10% phenolic resin solution, 25% phenolic resin powder, 20% brown corundum with particle size F60, and 37% white corundum with particle size F60.

[0042] S2. Preheat the mold to 45°C, put the mixed fine material raw materials into the abrasive tool, and flatten it to obtain a fine material non-grinding surface layer; the thickness of the fine material non-grinding surface layer accounts for 1 / of the total thickness of the angle grinding disc 4.

[0043] S3. Put a laye...

Embodiment 2

[0049] S1. Weigh and mix the coarse material and the fine material according to the following mass percentages for subsequent use, then sieve the coarse material through a 18-mesh sieve, and sieve the fine material through a 60-mesh sieve;

[0050] Coarse material: 3% cryolite, 5% phenolic resin solution, 10% phenolic resin powder, 15% brown corundum with particle size F22, 40% brown corundum with particle size F24, 27% white corundum with particle size F30;

[0051] Fine material: 1% cryolite, 2% epoxy resin, 3% phenolic resin liquid, 10% phenolic resin powder, 21% white corundum with particle size F100, 63% brown corundum with particle size F100.

[0052] S2. Preheat the mold to 40°C, put the mixed fine material raw materials into the grinding tool, and flatten it to obtain a fine material non-grinding surface layer; the thickness of the fine material non-grinding surface layer accounts for 1 / of the total thickness of the angle grinding disc 6.

[0053] S3. Put a layer of ...

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Abstract

The invention belongs to the technical field of grinding tool materials, and particularly relates to an angle grinding sheet and a preparation method thereof. Through the five-layer structural design of a rough grinding surface layer, a mesh layer, a coarse material layer, a mesh layer and a fine material non-grinding surface layer, and meanwhile, through optimization of the rough grinding surface layer, the coarse material layer and the components of the coarse material layer, the final angle grinding sheet is excellent in grinding performance, and sharp and durable; and a grinding wheel is even in abrasion and good in balance when a workpiece is ground, chipping is not prone to occurring, and in the actual use process, the hand of a person is not numbed during operation, and the safety is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of abrasive materials, and in particular relates to an angle grinding disc and a preparation method thereof. Background technique [0002] Angle grinder is a kind of resin abrasive tool with special fiber fabric as reinforcement material. Angle grinding discs have high tensile strength, impact resistance and bending strength. Angle grinding discs are widely used in grinding and rust removal of various metal and non-metal materials, which are fast and economical. Most of the grinding tools are artificial grinding tools made of abrasives and bonding agents, and natural grinding tools are also directly processed into natural ore rocks. In addition to being widely used in machinery manufacturing and other metal processing industries, abrasive tools are also used in the processing of non-metallic materials such as grain processing, paper industry, ceramics, glass, stone, plastic, rubber, and wood. [0003] Duri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D5/14B24D3/28B24D3/34B24D18/00
CPCB24D5/14B24D3/285B24D3/28B24D3/344B24D18/0009
Inventor 刘钟唐吉輝张桂芝
Owner NINGBO DAHUA GRINDING WHEEL
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