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HS-CODE
76-
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Detailed Description
Boron nitride coating for ferrous metal casting has been used for many years. As we all know, BN has the performance of the
larger contact angle θ in the range of metal melting temperature, thus it is particular outstanding for aluminum, magnesium,
zinc, copper and their alloys of nonwetting property. These coatings have the characteristic of exhibiting nonwetting/non-
stick properties with these molten metals and their drosses/slags.
According to the latest technology, researched with the professional institutions of Chemical and Physics, a thick layer of
boron nitride coating could be innovate or manufactured,such desire which thick layer coating used in non-ferrous metals
casting could be easily achieved.
By brushing and drying frequently, matchs with the using of additives A or B, the coating thickness can reach 5mm accompany
with high-strength, non cracks and non-reaction with the molten metal.
This “shell” coated on refractory ceramic surface results with a long-lasting boron nitride layer, such that recoating is
unnecessary for periods of time up to several months as compared to days or even hours with standard boron nitride coatings.
Advantage:
1. Non-reaction with the molten metal, smaller free energy of additives, replacement reaction with molten metal would not
happen, which is the key factor of service life longer .
2. Thick and thicker coatings can be achieved.It ideally resolves the pop-off” from moisture or microcracking or thermal
expansion differences with the substrate, No-mud-cracking. Coating thickness can reach 5mm. The surface still is smooth after
polishing slightly,an erosion-resistant nonwetting layer would occur on the surface.
The same also applies to the substrates of metals
3. Super-fine compositions, larger surface area , stronger adhesion.
4. Choose among of components A or B,it will be more suitable for drying and preheating substrate.
5. Water-base coating, treat easily.
6. Brushing, rolling, dipping, spraying any process can be applied
7. Harmful ingredients free, safety and environmental protection
Applications:
1. Applied to ceramic substrate
Coated on the workpieces which contact with high-temperature liquid such as aluminum, magnesium, zinc casting, to prevent the
substrate reacted, corroded, and heat shock resistance ,to prevent the corundum phase brought into, thereby reducing the
slags, improving the flow rate of the metal.
◇Launder, ladle, skimmer, control pin, spout,, hot top rings and transition rings.
◇Degasser and filter units,distributor,translation boards, nozzle, casting platform
◇Float, casting tip, rotor,, thermocouple protection tube.
◇Heater protective tube, the crucibles, evaporation boats, and other porous ceramics and graphite matrix
2. Applied to metal substrate
◇To prevent reacting and corroding with high temperature metal, facilitate the mold releasing and lubrication
◇A variety of casting or founding models, extrusion models
◇Press and forging model and powder metallurgy
◇Model releaseing of ceramics and glass industry
Products types:
A: BN White®
B: BN Blue®
C: BN Whi
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