Aluminum oxide ceramic solid rod, wear-resistant and high-temperature resistant industrial ceramic

Aluminum oxide ceramic tube and ceramic rod

Aluminum oxide ceramic (A203) is a highly wear-resistant precision ceramic material widely used in various industries. The main molding methods for alumina ceramic products include dry pressing, isostatic pressing, injection molding, and casting. Different product shapes, sizes, complex shapes, and precision require different molding methods. Aluminum oxide ceramic products that have undergone high-temperature sintering can only be processed using diamond grinding technology. The common purity of alumina ceramics is 90% -99.9%.

The uses of alumina ceramics

1 Aluminum oxide ceramics have excellent high-temperature properties and high mechanical strength, and are widely used in many industrial fields such as metallurgy, machinery, chemical industry, electronics, aviation, and national defense. Its main uses are as follows:

1. Aluminum oxide ceramics have properties such as high temperature resistance, corrosion resistance, and high strength, so they are used as sliding nozzles for pouring steel, crucibles and vessels for smelting rare and precious metals, special alloys, high-purity metals, and glass wire drawing; Various high-temperature furnaces, such as refractory materials, ceramics, and the lining (walls and pipes) of ironmaking blast furnaces; Physicochemical vessels, spark plugs, heat-resistant and antioxidant coatings. Low silicon sintered corundum bricks with SiO2 less than 0.5% are specialized furnace linings for carbon black, boron chemical, fertilizer, synthetic ammonia reaction furnaces, and vaporization furnaces;

2. At the same time, alumina ceramics have the characteristics of high hardness, good wear resistance, and high strength, and are used as components in various reaction vessels and pipelines, as well as chemical pumps in chemical systems; Produce mechanical components and various molds, such as wire drawing dies, pencil lead extrusion dies, and nozzles; Used as cutting tools, abrasive tools, bulletproof materials, human joints, sealing grinding rings, etc;

3. And it also has high temperature insulation, so it is used as a wire sleeve and protective tube for thermocouples. The insulation used in atomic reactors is still excellent, coupled with low loss and low dielectric constant. It is widely used in the electronics industry for solid integrated electric furnace substrate tube seats, shells, porcelain frames, thin windows, missile radar antenna protective covers, etc;

4. Aluminum oxide is an ionic crystal with a very stable structure. When used at high frequency, high voltage, and high temperature, its insulation performance is still excellent, coupled with low loss and low dielectric constant. It is widely used in the electronic industry for solid extruded circuit substrate sockets, casings, ceramic frames, micro glass windows, missile radar antenna protective covers, etc;

5. Aluminum oxide ceramic products have good airtightness and are tightly airtight even at high temperatures, making them widely used in electronics. For example, aluminum oxide ceramics are used to make various large electronic tube shells and dual inline packaging shells in solid microcircuits;

6. Aluminum oxide ceramic insulation materials are widely used in the walls and roofs of various high-temperature furnaces, which are both heat-resistant and insulated.

Physicochemical indexes of alumina solid rod:

source factories are complete in variety:

Machinery industry, electronics industry, electrical industry, chemical industry, medical industry, textile industry