Product brief description
silicon carbide sintering plates are a product of modern high-temperature technological advancements. Leveraging the power of materials science, they have established a sturdy, reliable, and efficient defense line for high-temperature processing in high-end manufacturing. They are not merely tools for simply supporting materials; rather, they serve as crucial technological carriers that enhance the overall level of sintering processes, achieve cost reduction and efficiency improvement, and facilitate a leap in quality. On the path of promoting the development of advanced ceramics and new material industries, they continue to play an irreplaceable core role.
Product Details Description
Silicon carbide load-bearing plate: the backbone and cornerstone of high-temperature kilns
In the high-temperature sintering process of high-end manufacturing fields such as ceramics, electronic components, and powder metallurgy, the sintering plate serves as a crucial support for carrying the green body, and its performance directly determines the product quality, production efficiency, and cost. Among them, silicon carbide sintering plates have become an indispensable core component in modern high-temperature industries, especially in precision ceramic sintering, due to their excellent comprehensive performance, and are known as the "steel backbone" within kilns.
I.Core Materials and Excellent Characteristics
Silicon carbide load-bearing plates are primarily made from high-purity silicon carbide, prepared through advanced processes such as recrystallization sintering or pressureless sintering. Silicon carbide itself is a super-strong ceramic material with extremely strong covalent bonds, which endows the load-bearing plates with a series of excellent properties that far surpass traditional refractory materials:
- 1. Ultimate high-temperature strength and load softening point: This is the most prominent advantage of silicon carbide load-bearing plates. They can maintain extremely high mechanical strength even at temperatures of 1600°C or higher, with a bending strength far higher than that of alumina materials. This enables them to bear heavy green bodies without deforming or collapsing, ensuring the geometric stability of the product during the sintering process. They are particularly suitable for electronic ceramics or structural ceramics with high sintering shrinkage rates and precise structures.
- 2. Excellent thermal conductivity**: The thermal conductivity of silicon carbide is more than ten times that of alumina. This characteristic means that during the heating and cooling process of the kiln, heat can be quickly and evenly transferred through the supporting plate to the fired product, effectively reducing temperature differences inside the kiln and avoiding problems such as cracking, deformation, or color difference in the product caused by uneven heating, thus significantly improving product consistency and yield.
- 3. Outstanding thermal shock resistance: Thanks to its high thermal conductivity and moderate thermal expansion coefficient, silicon carbide refractory board can easily cope with the tremendous thermal stress caused by rapid temperature rise and quenching in kilns. It is less prone to cracking due to drastic temperature changes, boasts a long service life, reduces the frequency of downtime for replacement during production, and enhances the efficiency of continuous production.
- 4. Extremely high corrosion resistance and chemical stability: At high temperatures, silicon carbide can resist the erosion of most acids, alkalis, molten metals, and salts. It is not prone to chemical reactions with the fired body or kiln atmosphere, thus avoiding contamination of the product and adhesion of the product to the plate surface, ensuring the purity and surface quality of the product.
II. Structural Design and Application Advantages
Modern silicon carbide load-bearing plates are not mere flat plates; their structural design is highly ingenious. These plates are typically designed with carefully arranged holes or slots. These structures are not only intended to reduce their own weight, but more importantly, to optimize airflow circulation within the kiln, ensuring that hot air can evenly cover every layer of products, further eliminating temperature dead zones.
In practical applications, these characteristics translate into the following significant advantages:
- Enhancing loading density**: Due to its high strength, silicon carbide plates can be made thinner or can support a greater weight at the same thickness, allowing for the placement of more products within a limited kiln volume, thereby increasing the output per operation.
- Energy saving and consumption reduction**: High thermal conductivity shortens the sintering cycle, accelerates the turnover rate of the kiln, and directly reduces the energy consumption per unit of product.
- Ensuring product quality**: A uniform thermal field and a stable support environment are prerequisites for producing high-performance and high-precision ceramic components such as MLCC, alumina ceramic substrates, and ceramic cleavers.
III. Application Fields and Prospects
Silicon carbide load-bearing plates have been widely used in:
- Electronic ceramics: multilayer ceramic capacitors (MLCC), alumina/aluminum nitride ceramic substrates, piezoelectric ceramics, etc.
- Structural ceramics: ceramic cutting tools, wear-resistant components, ceramic roller bars, etc.
- Powder metallurgy: high-temperature sintering of cemented carbides, magnetic materials, etc.
IV. Use and Maintenance
Despite its excellent performance, the silicon carbide refractory board is still essentially ceramic, possessing a certain degree of brittleness. Therefore, it needs to be handled with care and placed gently during transportation and kiln loading to avoid mechanical impact. As the number of uses increases, its strength will gradually decrease, requiring regular inspection and timely replacement to prevent significant losses caused by fractures during production.
EN
