Boron nitride in the aluminum industry
Release agents in aluminum casting and lubricants in aluminum extrusion. Aluminum casting involves high temperatures and high reactivity. Molten aluminum is typically processed at approximately 650–800 °C. In extrusion, on the other hand, temperatures of approximately 400–550 °C act on the aluminum billet, accompanied by very high extrusion forces.
A major challenge for the aluminum industry—one that Henze BNP’s hexagonal boron nitride products are well-equipped to meet! Hexagonal boron nitride is a high-performance material offering a unique combination of thermal stability, chemical resistance, and excellent sliding properties.
Typical applications:
- Chemically inert process partner for aluminum alloys
- Protective and separating layers on casting tools, casting channels, or molds
- Coating of a die, press disc, or aluminum billet
- Electrostatic dry lubrication
Our Boron Nitride Recommendations
HeBoCoat ® PL-W 250
HeBoCoat ® SL-E 200
HeBoFill ® extrusion Pro
HeBoCoat ® Wax Sticks
Advantages of Boron Nitride in the Aluminum Industry
- Preventing buildup
- Ensuring dimensionally accurate molding and the highest surface quality
- Extended service life by minimizing reactions and wear
- Reduced maintenance requirements, improved process stability, and cost efficiency
- Erhalt einer hohen Gussqualität und Legierungsreinheit
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Frequently Asked Questions
Why are the requirements for tools and processing aids in the aluminum industry so extreme?
As a material, aluminum is light, versatile and extremely economical, which is why it is valued in many industries. However, in its liquid or plastic state, the metal places extremely high demands on the equipment, tools and process aids used. In order to meet the ever-increasing quality requirements in aluminum casting and forming, high-temperature-resistant materials are needed that can withstand these harsh conditions permanently and reliably.
How do boron nitride coatings improve aluminium casting?
When in contact with molten aluminium, it is essential that the refractory materials used are coated with a completely reliable coating. Our liquid HeBoCoat® coatings possess precisely the combination of properties required to meet these high quality standards on a long-term basis. For example, they provide channel materials with the necessary release properties, reduce wear on the equipment and make cleaning after casting considerably easier, which makes the overall process significantly more efficient.