Electric fused corundum furnace for corundum smelting
Industrial use:
Corundum is widely used in metallurgy, machinery, chemical,
electronics, aviation and defense and other industrial fields.
1. The use of corundum high temperature resistance, corrosion
resistance, high strength and other properties, used as a sliding
gate for pouring steel, smelting rare metals, special alloys, high
purity metals, glass wire drawing, making laser glass and vessels;
Manufacture of various high-temperature furnaces, such as
refractory materials, ceramics, linings (walls and pipes) of
ironmaking blast furnaces; For physical and chemical utensils,
spark plugs, heat resistant and oxidation resistant coating; In
addition, low silicon sintered corundum bricks with SiO2 < 0.5%
are special linings for carbon black, boron chemical industry,
fertilizer, synthetic ammonia reactors and vaporizers.
2. The use of its high hardness, good wear resistance, high
strength characteristics, in the chemical system, used as a variety
of reaction vessels and pipelines, chemical pump components; For
mechanical parts, various molds, such as wire drawing die,
extrusion pencil core die mouth, etc.; For cutting tools,
abrasives, bulletproof materials, human joints, sealing grinding
rings, etc.; For advanced grinding materials, made of grinding
wheel, grinding disc, sandpaper and grinding powder, can also be
used as instrument bearings; The abraded tools are suitable for
grinding all kinds of metals with higher hardness and tensile
strength, such as carbon steel, alloy steel, calcined cast iron,
hard bronze, etc. Corundum powder can be used as high-grade
polishing powder, or laser and infrared ray window material.
3. Corundum is an ionic crystal with a stable structure. Used at
high frequency, high pressure and high temperature, its insulation
is still good, coupled with little loss, dielectric constant is not
large, in the electronics industry is widely used in solid
synthetic circuit plate tube base, shell, porcelain frame, glass
window, missile radar antenna protective cover and so on.
4. Corundum products have good air tightness, even at high
temperature is tight and airtight, so it is widely used in electric
vacuum, such as the use of corundum to make a variety of large
vacuum tube shells, solid microcircuits in the dual in-line package
shell.
5. As corundum insulation materials, such as corundum light brick,
corundum hollow ball and fiber products, widely used in various
high temperature furnace wall and furnace top, both high
temperature resistance and heat preservation.
6. Transparent corundum products can be made of lamp tubes and
microwave fairing.
