Product Details
Hot-Press Boron Nitride BN nozzles for amorphous soft magnetic
alloy spray tapes and metal powders gas atomization
Boron nitride belongs to the hexagonal system. Its structure is
similar to graphite, and their properties are also similar.
Therefore, it is also called " white graphite". It has good heat
resistance, thermal stability, thermal conductivity, high
temperature dielectric strength, and is an ideal heat dessipating
material and high temperature insulatiing material. Mohs Hardness 2
can be processed into various shaped parts.
Performance
- Operating temperature: 1900℃ in vacuum, 2100℃ in the case of
nitrogen, argon and other inert gases, and 900℃ in the case of
oxidation resistance.
- It has extremely strong thermal shock resistance and can be cooled
rapidly for 15 minutes at 1000 degrees to room temperature for 100
times without cracking.
- It has good corrosion resistance, good chemical stability and small
thermal expansion coeffcient.
- Excellent electrical performance: excellent insulation at high
temperature, which will not significantly decease with the incerase
of temperature. The breakdown voltage is 3KV/MV, the low dielectric
loss is 2.5x10-4 at 108HZ, and the dielectric constant is 4, which
can penetrate microwave and infrared ray.
- With many metals, glass solution does not bod does not react.
The main products of Boron Nitride Ceramics
Hot pressing hexagonal boron nirtride ceramic and boron nitride
composite ceramic, includes:
- Insulation tubes, sleeve, and parts for vacuum furnace
- nozzles for amorphous soft magnetic alloy spray tapes and metal
powders gas atomization
- horizontal continuous casting separation rings/crystal tubes
- crucibles, composite ceramic molds
- TiB2/graphite composite ceramic cathodes for electrolytic aluminum
- graphite/BN ceramic composite evaporator boats for vacuum
evaporation and aluminum plating
- large and medium-sized vacuum hot pressing furnaces
- large size hot pressing molds, etc.
Boron Nitride Nozzle Basic Information & Materials
Typical Properties | BN-H | BN99 | BN-Ca | BN-A | BN-B | BN-C | BN-D | BN-E |
Composition | hBN>99% | hBN>99% | hBN>98.5% | hBN+AL+SI | hBN+AL+ZR | hBN+SIC | hBN+ZrO2 | hBN+ALN |
Binder | B2O3 | B2O3 | B2O3 | B2O3+Al2O3+SiO2 | B2O3+Al2O3 | B2O3 | B2O3+Al2O3 | B2O3+Al2O3 |
Color | White | White | White | White Graphite | White Graphite | Greyish-Green | White Graphite | Greyish-Green |
Typical Density (g/cm3) | 1.55~1.6 | 1.85~1.98 | 1.98~2.03 | 2.25~2.35 | 2.25~2.35 | 2.40~2.50 | 2.25~2.95 | 2.45~2.95 |
Thermal Properties |
Max. Using Temperature (°C) In Air In Inert In Vacuum | 900 2100 1900 | 900 2100 1900 | 900 2100 1900 | 1000 1750 1750 | 1000 1700 1700 | 1000 1700 1700 | 1000 1800 1800 | 1000 1800 1800 |
Thermal Expansion (RT·1000 °C ) (10-6/K) | 1.5 | 1.5 | 1.5 | 2 | 2 | 2.8 | 3.5 | 2.8 |
Thermal Conductivity (W/mk) | 15 | 35 | 35 | 30 | 30 | 40 | 30 | 85 |
Electrical and Mechanical Properties |
Electrical Resistiity (Ω/cm) | >1014 | >1014 | >1014 | >1013 | >1013 | >1012 | >1012 | >1013 |
Bending Strength (MPa) | 28 | 30 | 30 | 65 | 65 | 80 | 90 | 90 |
Compressive Strength(MPa) | 50 | 55 | 55 | 145 | 145 | 175 | 220 | 220 |
Typical Applications | high-temperature Vacuum | High-Temperature Vacuum | High-Temperature Vacuum | Powder Metallurgy | Powder Metallurgy | Powder Metallurgy | Metal Casting | Powder Metallurgy |
lnlustratior for High-Temperature Furnace | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Crucibles for Metal Evaporation | ✓ | ✓ | ✓ | | | | | ✓ |
Parts for Melting Metals or Glass | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Casting Mold for Metals or Alloys | | ✓ | ✓ | | ✓ | | | |
Support Parts for High-Temperature | | ✓ | ✓ | | | | | ✓ |
Pipes or Nozzles for Liquid Metal Handling | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Crucibles for Ceramic Sinter | ✓ | ✓ | ✓ | | ✓ | | | ✓ |
Company Profile
Henan ZG Industrial Products Co. Ltd. was founded by specialists of
leading industrial institutes in Zhengzhou city, China in 2007.
Our company manufactures, complex develops, supplies, introduces
and upgrades products from technical ceramics, heating elements and
graphite. We provide services for the manufacture, repair and
renovation of special high-temperature equipment as well. In
addition, our company provides services for R&D, analytical
research within our specialization.
We have established contacts with the world’s leading and domestic
manufacturers of ceramic and heating elements, leading industry
institutes and track all the latest trends in this field.
The introduction of ceramic and heating elements in production
requires a special study of each case, taking into account
technological and market nuances. The specialists of our company
have all the necessary experience for the most complete solution of
the customer’s problem and developing an optimal offer.
Among our customers are chemical, petrochemical, oil refining, oil
and gas, mining, mining and concentrating, paper, metallurgy,
power, electrical, electronic, glass and other industries.
We will be glad to answer all your questions.