Boron Nitride Composite BN Ceramic Nozzle For Powder Spray
BN | |||||||||
Chemical component | % | >99 | C795 | C786 | C610 | ||||
Density | g/cm3 | 2.15 | 95 | 92 | 62 | ||||
Richter hardness | HL | 450 | 3.68 | 3.63 | 2.7 | ||||
Flexural strength | Mpa | 95 | 0 | 0 | 0 | ||||
Thermal expansivity (25C-1200C) | 10-6/K | 1~2 | 2300 | 2000 | 550 | ||||
Thermal conductivity at 20C | W/mk | 35 | 17-25 | 14-23 | 3-5 | ||||
Max temperature | oxidizing | 900C | 6-8 | 6-8 | 6 | ||||
vacuum | 1600C | 15 | 15 | 17 | |||||
inert atmosphere | 1800C | >1014 | >1014 | >1014 | |||||
Resistivity at room temperature | Ω.cm | >10^14 | 1550 | 1500 | 1500 | ||||
Hardness | 9 | 9 | 9 | 8 | |||||
Refractoriness | 2030 | ||||||||
Boron nitride ceramics
Features:Good electrical insulation, thermal conductivity, excellent thermal shock resistance and chemical stability, good
moisture resistance to molten metal, slag and glass.
Boron nitride ceramic is resistant to acid and alkali corrosion, has strong electrical insulation, and has an
electrical breakdown strength of 3-4 times that of alumina. Boron nitride ceramics have excellent high
temperature resistance.
The use temperature is 1800 degrees under vacuum, and the use temperature is 2100 degrees under the
protection of atmosphere(nitrogen, argon and other inert gases). The boron nitride ceramic has a high
thermal conductivity, strong thermal shock resistance, and does not crack when quenched at 1500 degrees.
It is taken out of the furnace at a temperature of 1000 degrees for 20 minutes, and then blown and quenched
for hundreds of times without cracking. Boron nitride ceramics do not react and do not adhere to many metals, ceramics, rare
earths and other materials.
Application: high temperature electric furnace components (high temperature insulation sleeves, etc.), metal
evaporation crucibles, various devices for molten metal or glass, precious metal or special alloy casting mold
parts, high temperature support and other stressed components, molten metal transport pipes, nozzles ect.
Q: Are you trading company or manufacturer ?
A: We are factory. We had been engaged industrial ceramics for more than 20 years.The quality and service of the products are guaranteed.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 20-40 days if the goods are not in stock, it is according to the quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: 100%T/T before shipping, when the value of the goods is less than $10,000. If over, can be discussed. Accept the payment by Alibaba insurance order.
Q:Why choose us?
A: OEM and ODM are available. We had customized about 6000 kinds ceramics products for our customer all over the world.
Pre-sale service: Professional technical persons will choose suitable materials for you due to using environment about the ceramic parts.
The sale of services: If you need,we can provide the sample for you to go on testing,and also provide technical help and supports for you.
After-sales service: Accept any repair of the product, help to improve technology for customer. And also provide long-term technical help and support for you.
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