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Polycrystalline corundum

Polycrystalline corundum is based on black corundum, adding new elements in the production process, optimizing the main crystal image of black corundum, its color is brown-black, with high hardness, strong toughness, and good self-sharpness. Polycrystalline corundum retains the advantages of black corundum with good self-sharpness, high sharpness, less heat generation, and high surface finish, which greatly improves the durability of black corundum.

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Polycrystalline corundum

Polycrystalline corundum is based on black corundum, adding new elements in the production process, optimizing the main crystal image of black corundum, its color is brown-black, with high hardness, strong toughness, and good self-sharpness.
Polycrystalline corundum retains the advantages of black corundum with good self-sharpness, high sharpness, less heat generation, and high surface finish, which greatly improves the durability of black corundum.

1.2 Polycrystalline corundum indicator

Polycrystalline corundum is a new type of abrasive developed by the Yeda team for many years, and the particle size composition implements national standards and can also be customized according to customer needs

Chemical indicators

name

Particle size range

Typical chemical composition

Al2O3（%）

Fe2O3（%）

SiO2（%）

TiO2（%）

Polycrystalline corundum

F10-220

Physical metrics

Color: brownish black
Hardness: Vickers hardness 2100 KG/mm2
Crystal: Tricrystalline square system
True Specific Gravity: 3.6g/cm3

Polycrystalline corundum advantages

2.1 Performance improvements

1. Good durability

Polycrystalline corundum is more than 30% more durable than the original black corundum

2. Good hydrophilicity

The particle surface of polycrystalline corundum has higher hydrophilicity than black corundum abrasive, and the binding strength of resin is stronger.

3. Good self-sharpness

The polycrystalline microstructure of polycrystalline corundum determines that it has good self-sharpness

4. Good heat dissipation

The polycrystalline microcrystalline grinding mechanism of polycrystalline corundum determines that it has good heat dissipation performance.

5. Good value for money

The price of polycrystalline corundum is lower than that of first-class brown corundum, but the performance is basically the same as that of first-class brown corundum, so it has a higher cost performance.

Polycrystalline corundum uses

3.1 Make resin abrasives

Manufacture of resin abrasives

The use of polycrystalline corundum and other abrasives composite to make resin abrasives, can effectively improve the sharpness and durability of the abrasives.

3.2 Manufacture of coated abrasives

Manufacture of coated abrasives

Polycrystalline corundum or composite

other abrasives are used to make abrasive cloths,

sandpaper, sponge blocks, etc.

3.3 Make fiber abrasives

Make fibers

Use polycrystalline corundum or composite

other abrasives to make nylon wheels, cleaning cloth,

drawing wheels and other fiber abrasives

Polycrystalline corundum quote

name	specification	wrap	Ex-factory tax included Unit price (yuan / ton)
Polycrystalline corundum	F24-36	Neutral pouch/ton bag	3500
	F46-60		3600
	F70-80		3500
	F90-100		3600