Alumina ceramic valve core

Alumina ceramic valve cores and precision ceramic sleeves, as high-performance industrial components, are widely used in various fields due to their unique material properties. The following is a detailed introduction to their comprehensive product characteristics and applications:

Material Characteristics

1. Ultra-high hardness and wear resistance: Alumina ceramic valve cores have a Rockwell hardness of HRC90 (second only to diamond), and their wear resistance is dozens of times that of metal valve plates. This significantly extends their service life under high-pressure and high-wear conditions. Precision ceramic sleeves use 99% high-purity alumina, with a Mohs hardness of 9 and a compressive strength of 2000 MPa. Their wear resistance is 266 times that of manganese steel.

2. Corrosion resistance and high-temperature resistance: They exhibit strong resistance to strong acids, strong bases (except hydrofluoric acid), and molten metals, with a temperature resistance range of up to 1600℃ (1800℃ for short periods), making them suitable for extreme environments such as those found in the chemical and metallurgical industries. For example, in the transportation of concentrated hydrochloric acid, the lifespan of alumina ceramic pipes can be 12 times that of metal pipes.

3. Electrical and thermal properties: They have a volume resistivity of 10¹⁴ Ω·cm, making them suitable for electrical insulation; a thermal conductivity of 27.5 W/(m·K), and a thermal expansion coefficient that matches silicon wafers, ensuring the stability of precision equipment such as 5G base stations.

Product Applications

1. Industrial Valve Field: Alumina ceramic valve cores are used in high-pressure valves to solve the problems of wear and corrosion of metal valve components.

2. Precision Machinery and Electronics: Ceramic sleeves are used in mechanical seals and electronic component packaging, such as ceramic resistors and fiber optic connectors.

3. Medical and New Energy: High-biocompatibility alumina ceramics are used in medical injection devices, artificial joints, and electrode supports for new energy batteries.

Supports custom specifications.