Hot Pressed Boron Nitride - application in metallurgy
Boron nitride ceramics are renowned advanced materials with unique properties. Specifically, they exhibit high thermal stability, resistance to thermal shock, excellent lubrication, and superior thermal insulation. Consequently, boron nitride ceramics serve important purposes in multiple metallurgical applications. These applications include continuous casting, metal welding and brazing, metal powder production, and use as refractory materials. Applying high-purity boron nitride to these processes enhances performance, lowers defects, and expands equipment lifetime.
Continuous Casting
In continuous casting, boron nitride ceramics commonly function as mold fluxes. Specifically, they enable smooth and efficient casting through exceptional lubrication. Moreover, they offer superior thermal insulation vital for maintaining molten metal temperature during casting. As a result, the high-purity boron nitride in mold fluxes significantly enhances the surface quality of the cast products. It reduces the occurrence of defects such as cracks and surface marks. Therefore, this reduction in defects improves the overall quality and reliability of the final product.
Metal Welding and Brazing
Boron nitride ceramics also find extensive use as effective anti-sticking agents and release agents in welding and brazing applications. Their role is to prevent the adhesion of molten metal to tools and equipment. This property facilitates easy removal of the metal after the process, reducing downtime and enhancing productivity.
Moreover, boron nitride ceramics boast high thermal conductivity, which aids in efficient heat dissipation during welding and brazing. This property is critical in preventing overheating and the potential damage it can cause to both the tools and the workpiece.
Refractory Materials
The exceptional thermal stability and resistance to thermal shock make boron nitride ceramics suitable as refractory materials. They are commonly employed in the lining of furnaces, crucibles, and refractory containers used in various high-temperature metallurgical processes such as smelting, alloy production, and heat treatment.
High-purity boron nitride ceramics can withstand extreme temperatures, ensuring prolonged service life and reliable performance even in harsh conditions. They contribute to the efficiency and safety of high-temperature operations, reducing maintenance costs and downtime.
Boron nitride ceramic material
Metal Powder Production
In metal powder production, boron nitride ceramics serve as mold release agents and lubricants. Their use allows for easy removal of the compacted metal powder from the molds, ensuring a smooth and efficient production process.
The low coefficient of friction of boron nitride ceramics prevents damage to the powder particles during ejection, preserving the quality and integrity of the metal powder. High-purity boron nitride further enhances this process, contributing to the production of high-quality metal powders.
High Purity Hot Pressed Boron Nitride
When it comes to boron nitride ceramics, high purity is of utmost importance, especially in metallurgical applications where impurities can have detrimental effects on the final product. Although the CVD made pyrolytic boron nitride (PBN) has extremely high purity, the applications are limited due to its boron nitride with a grade purity of 99.9%, and one such representative supplier is QS Advanced Materials with their TPBN product. It exhibits an exceptionally low content of CaO, which is crucial for handling high purity materials in metallurgical processes. The purity and quality of TPBN make it a preferred choice for critical metallurgical applications, ensuring the production of superior metal products with minimal impurities.
QSAM’s TPBN boron nitride rods
Conclusion
In conclusion, boron nitride ceramics play a critical part in various metallurgical applications due to unique traits enhancing production, lowering defects, and lengthening equipment lifespan. Specifically, properties such as high thermal stability and lubrication prove indispensable for industry efficiency and superior product quality.