Boron nitride nozzles are high-performance nozzles, usually used for fluid dynamics research and spray experiments under special working conditions such as high temperature/high pressure, and are suitable for the following application areas:
Atomization Powder-Making Field
Water atomization, gas atomization, oil atomization, gas-water linkage atomization, and plasma atomization have developed successively and replaced the carbonyl method to become mainstream.
The key component of atomization powder-making is the nozzle, which largely determines the atomization rate (fine powder output rate), and then selects production efficiency and powder quality.
The industry continues to explore improvements in nozzles, such as changing the flow field of gas, melt, and liquid through design, improving the gas-liquid ratio, and controlling oxygen content.
The nozzle faces harsh working conditions such as erosion, wear, high temperature, and severe thermal shock. Its material determines the process stability and component life.
High-purity boron nitride ceramics have excellent high-temperature resistance, while composite boron nitride ceramics slightly sacrifice high-temperature resistance in exchange for improved capabilities in different directions such as corrosion resistance, wear resistance, and thermal shock resistance.
Composite boron nitride ceramic nozzles can minimize clogging and metal creep, thereby reducing the frequency of nozzle replacement. Due to the low friction coefficient of boron nitride (BN), the smooth surface finish and tighter tolerances provide predictable particle size distribution between batches. In addition, the extremely strong resistance to thermal shock allows boron nitride nozzles to be used without a lot of preheating.
3D printing field
The biggest difference between 3D printing and injection molding is that 3D printing does not require molds, which is more conducive to personalized and diversified production. Since there is no constraint and auxiliary role of the mold, its production process naturally depends more on the performance of the printing equipment and the powder raw materials.
The nozzle is a key component that determines the quality of the finished product. Only by selecting the nozzle according to the needs can a satisfactory effect be obtained-the simplest understanding is that if you pursue speed, you must give up precision and choose a large nozzle. If you pursue precision, you must give up speed and choose a small nozzle.
With the development of metal 3D printing technology, the benefits that boron nitride brings to metal atomization are becoming more and more relevant to these new 3D printing technologies.
For example, some 3D printing manufacturers are currently looking for ways to handle high-temperature molten metals – high temperatures can cause huge thermal stresses on mechanical parts, thus bringing new challenges to printer design; in addition, there are requirements such as non-adhesion and non-wetting of molten metals…
The high thermal shock resistance and low thermal expansion coefficient of boron nitride ceramics enable them to withstand high thermal gradients, and their high thermal conductivity helps the rapid solidification of metals after deposition.
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