What is the difference between alumina and silicon carbide with paper abrasive belt

Alumina. Silicon carbide is an abrasive, and paper sand with different abrasives can be selected according to your needs.

Alumina. It is a white solid that is insoluble in water, odorless, tasteless, extremely hard, and easy to absorb moisture but not moisture.

solution (burned, non-hygroscopic). Amphoteric oxides, soluble in inorganic acids and alkaline solutions, almost not.

Soluble in water and non-polar organic solvents; Relative density.

d204);Melting point 2050 . It is used as an analytical test.

Dehydration of organic solvents, adsorbents, organic reaction catalysts, abrasives, polishing agents, smelting.

Raw materials and refractory materials for aluminum.

Silicon carbide:Silicon carbide (SiC) is made with quartz sand.

Petroleum coke (or coal coke), wood chips (to produce green.

Silicon carbide needs to be added salt) and other raw materials are smelted at high temperature in a resistance furnace. The specific gravity is 2840 3320kg mm2. Its toughness is higher than that of green silicon carbide, and it is mostly used for processing tensile resistance.

Low-strength materials such as glass, ceramics, stone, refractories, cast iron, and non-ferrous metals.

Alumina: a white solid that is insoluble in water, odorless, tasteless, extremely hard, easy to absorb moisture without deliquescent (non-hygroscopic after burning). Amphoteric oxides, soluble in inorganic acids and alkaline solutions, almost insoluble in water and non-polar organic solvents; It is a compound with high hardness, with a melting point of 2054 and a boiling point of 2980, which is used as an analytical reagent, dehydration of organic solvents, adsorbents, organic reaction catalysts, abrasives, polishing agents, raw materials for smelting aluminum, and refractories.

Silicon carbide: Silicon carbide (SiC) is made of quartz sand, petroleum coke (or coal coke), wood chips (salt is added to the production of green silicon carbide) and other raw materials through a resistance furnace at high temperature. The specific gravity is 2840 3320kg mm2.

Its toughness is higher than that of green silicon carbide, and it is mostly used to process materials with low tensile strength, such as glass, ceramics, stone, refractories, cast iron and non-ferrous metals.

Features of alumina:

1. Good thermal stability, that is, when used at high temperatures, it can still maintain the same performance.

2. The chemical properties are stable, resistant to organic solvents, chlorides and strong acids and alkali solutions, and are not easy to be degraded by microorganisms.

3. It has great strength and can operate under a large pressure gradient without being compressed and creeped, so its mechanical properties are good.

4. Compared with polymer film, there will be no aging. As long as it is not damaged, it can be used for a long time.

Features of silicon carbide:

1. Silicon carbide has the characteristics of corrosion resistance, high temperature resistance, high strength, outstanding thermal conductivity and impact resistance.

1.Definition. Oxygen as aluminum: Alumina is an inorganic compound with the chemical formula Al2O3.

Pure Silicon Carbide: Silicon carbide is an inorganic compound with the chemical formula CSI.

2.Molar mass.

Alumina: The molar mass of alumina is g mol.

Silicon carbide: Silicon carbide has a molar mass of g mol.

3.Electrical conductivity.

Alumina: Alumina is an electrical insulator.

Silicon carbide: Silicon carbide is a type of semiconductor.

4.Appearance. Alumina: Alumina is a white crystalline powder.

Silicon carbide: Silicon carbide yellow to green crystals.

5.Melting point and boiling point.

Alumina: Alumina has a melting point of 2072 °C and a boiling point of 2977 °C.

Silicon Carbide: Silicon carbide has a melting point of 2,830°C and has no boiling point due to sublimation. Therefore, the melting point is actually the sublimation temperature of silicon carbide.

They are two completely different things.

Alumina, also known as aluminium oxide, formula 102, commonly known as "aluminium oxygen", is a white amorphous powder, insoluble in water, commonly known as bauxite.

Silicon carbide (SiC) is made by smelting at high temperature in a resistance furnace with raw materials such as quartz sand, petroleum coke (or coal coke), and wood chips (salt is required to produce green silicon carbide). Silicon carbide is also found in nature with a rare mineral, moissanite.

Silicon carbide is also known as moissanite. Among the contemporary non-oxide high-tech refractory raw materials such as C, N, and B, silicon carbide is the most widely used and economical one, which can be called gold steel sand or refractory sand.

At present, China's industrial silicon carbide is divided into black silicon carbide and green silicon carbide, both of which are hexagonal crystals, with a specific gravity of 2840 3320kg mm2.

Alumina is mainly used to polish the white body of wood, silicon carbide is mainly used to polish plates, and silicon carbide is mainly used to polish paint after coating.

Silicon carbide water-resistant sandpaperIt is mainly used for grinding and polishing machine tools, automobiles, ships, instruments, furniture, wood, plastic crafts and mechanical parts, especially for grinding and polishing precision instruments. Latex paper silicon carbide has superior soft properties, good hand feel, wear-resistant, and can be used both wet and dry. Mainly used for:

Fine machining and polishing of metal surfaces and non-metals.

Alumina water-resistant sandpaperUsing excellent electrostatic sand planting technology and special sand planting standards, this product has strong water resistance, can be soaked in water for a long time, it can be applied in a wet and dry environment The newly developed adhesive improves the wear resistance and softness of the sandpaper, high grinding efficiency, good finish and long service life.