Alumina ceramics have long been known for their remarkable properties, such as high hardness, excellent thermal stability, and resistance to wear and corrosion. Among the various alumina ceramic products, the Industrial Alumina Ceramic 2-Hole Tube stands out as a critical component in many industrial applications. These tubes are widely used in high-temperature environments, particularly for housing thermocouples and other electrical instrumentation. Their unique properties make them ideal for demanding tasks in industries such as metallurgy, aerospace, and energy production.

Our Alumina Ceramic 2-Hole Tubes stand out for their exceptional mechanical strength, ensuring longevity and resistance to external forces. Whether in high-impact environments or extreme conditions, these tubes remain robust and steadfast, guaranteeing the utmost safety for your metal wires.

2‑hole alumina ceramic tubes are manufactured from high‑purity alumina (99.3%–99.7%) as the core raw material through precision forming and high‑temperature sintering processes. Featuring open ends and excellent verticality, they can withstand an extreme temperature of up to 1800°C and meet international standards including SGS and DIN series.

The industrial research team focuses on four aspects: material modification, process optimization, structural innovation and surface strengthening. It has developed a mature technical system to improve thermal shock resistance, effectively solving the reliability challenges of alumina ceramics under high-temperature service conditions.

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After the powder is formed, a biscuit with good shape is obtained, and then the biscuit is heated at a certain temperature. The biscuit undergoes volume shrinkage and finally becomes a compact sintered body. This process is called sintering. The driving force of alumina ceramic green body sintering is mainly the change of powder surface energy, that is, the surface energy of powder decreases, the surface area decreases, and the ceramic densifies. In the process of ceramic sintering densification, material transfer can be carried out through solid phase diffusion, including surface diffusion, grain boundary diffusion, lattice diffusion, etc. Normal pressure sintering is generally used in industry.

After the powder is formed, a biscuit with good shape is obtained, and then the biscuit is heated at a certain temperature. The biscuit undergoes volume shrinkage and finally becomes a compact sintered body. This process is called sintering. The driving force of alumina ceramic green body sintering is mainly the change of powder surface energy, that is, the surface energy of powder decreases, the surface area decreases, and the ceramic densifies. In the process of ceramic sintering densification, material transfer can be carried out through solid phase diffusion, including surface diffusion, grain boundary diffusion, lattice diffusion, etc. Normal pressure sintering is generally used in industry.