RSiC High-Temperature Kiln Shelf for Alumina/High-Alumina Ceramics and Wear-Resistant Lining Bricks

RSiC Recrystallized Silicon Carbide Shelf Board: High-Temperature Kiln Board for Alumina/High-Alumina Ceramics and Wear-Resistant Lining Bricks

The sintering production of alumina ceramics, high-alumina ceramics and wear-resistant lining bricks imposes strict requirements on the high temperature resistance, deformation resistance and pollution prevention performance of kiln furniture. Traditional shelf boards are prone to cracking and deformation at high temperatures, as well as color penetration and sticking problems, leading to short service life and restricting product yield and production efficiency.RSiC recrystallized silicon carbide shelf boards are manufactured with binder-free high-purity silicon carbide recrystallization technology, capable of long-term stable service at 1500°C. Customizable alumina protective coatings are available, making them premium kiln furniture for stable production, quality improvement and cost reduction in high-temperature ceramic sintering processes.

Core Performance: Stable Service at 1500°C High Temperature

Featuring a dense and uniform structure with extremely low porosity, the shelf board shows no softening, creep or deformation under long-term working conditions at 1500°C, maintaining stable high-temperature structural strength. It supports multi-layer stacking and bearing of green bodies, effectively avoiding finished product defects such as warping, dimensional deviation and collapse. With excellent thermal shock resistance, it adapts to frequent temperature rises and falls in kilns, resisting cracking and edge chipping under alternating cold and heat conditions and greatly reducing damage and replacement frequency.

Benefiting from the high thermal conductivity, low thermal expansion and high hardness of silicon carbide, the board ensures uniform heating inside the kiln, consistent sintering density and unified appearance of ceramics and lining bricks. The substrate is resistant to acid and alkali corrosion and high-temperature oxidation, capable of resisting erosion from sintering flue gas and additives. It fundamentally eliminates defects such as yellowing and impurity contamination of finished products, meeting the production standards of high-end high-purity ceramics. Lightweight yet high-load-bearing, it enables high-density kiln loading, effectively improving kiln utilization rate and reducing sintering energy consumption.

Customizable Alumina Coating for Enhanced Anti-fouling and Anti-sticking Performance

To solve the industry pain points of sticking, color penetration and element contamination during ceramic sintering, the shelf board can be customized with high-purity alumina protective coatings. The coating adheres firmly to the substrate without peeling or failure at 1500°C, forming a dense protective layer. It completely isolates direct contact between the silicon carbide substrate and ceramic green bodies, preventing silicon element penetration and contamination and eliminating color penetration defects in high-purity alumina ceramics and precision high-alumina ceramics. Meanwhile, it improves the board’s corrosion resistance and anti-sticking performance, reducing demoulding loss and surface scratch defects of finished products, significantly extending the service life of kiln boards and supporting continuous mass production.

Core Application Scenarios

1. Alumina Ceramics

Suitable for sintering 95% and 99% high-purity alumina structural ceramics, electronic ceramics and wear-resistant accessories. The combination of 1500°C stable performance and customized alumina coating ensures finished products with high density, superior insulation and excellent wear resistance, meeting the mass production requirements of high-precision ceramics.

2. High-Alumina Ceramics

Ideal for sintering high-alumina refractory ceramics, special-shaped high-alumina components and high-temperature insulating ceramics. With outstanding high-temperature deformation resistance and high load-bearing capacity, it adapts to the firing of large-size and heavy-weight green bodies. Uniform heating promotes complete densification sintering, improving the finished products’ scouring resistance, compressive strength and high-temperature resistance.

3. Wear-Resistant Lining Bricks

Widely applied in the production of alumina and high-alumina wear-resistant lining bricks for mining, metallurgy, chemical and building material industries. Its high hardness, superior thermal shock resistance and high load-bearing performance adapt to large-scale stacked sintering. It effectively enhances the density and structural stability of lining bricks, improving their impact resistance and wear resistance to adapt to harsh industrial working conditions.

Product Advantages Summary

Featuring 1500°C high-temperature stability, thermal shock resistance and deformation resistance, uniform heating with high thermal conductivity, and corrosion resistance with high cleanliness, RSiC recrystallized silicon carbide shelf boards, upgraded with customizable alumina coatings, effectively solve common industry problems including ceramic sintering contamination, sticking, vulnerable kiln furniture and product dimensional deviation. They help enterprises achieve quality improvement, efficiency enhancement and cost reduction in the production of alumina ceramics, high-alumina ceramics and wear-resistant lining bricks.

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