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SINTYRON Nitride Bonded Silicon Carbide Rising Tube

Nitride-bonded silicon carbide rising tubes are critical for high-performance industrial applications where extreme temperatures, thermal cycling, and corrosion resistance are required. Their durability and efficiency make them a preferred choice in demanding environments.

Email: sintyron@xtlceramic.com

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Nitride Bonded Silicon Carbide Rising Tube Description

Nitride-bonded silicon carbide (NBSC) rising tubes are specialized ceramic components used in high-temperature

and corrosive environments, particularly in industries like metallurgy, glass manufacturing, and chemical processing.

Here’s an overview of their key features and applications:

Data Sheet & Typical properties of silicon nitride material:

Item	Unit	Si3N4
Type	–	Gas pressure sintered
Density	g/cm3	3.22
Color	–	dark grey
Water Absorption	%	0
Young Modulus	Gpa	290
Vickers Hardness	Gpa	18 – 20
Compressive Strength	Mpa	2200
Flexural Strength	Mpa	650
Thermal Conductivity	W/m.K	25
Thermal Shock Resistance	Δ(°C)	450 – 650
Max. Working Temp.	°C	1200
Volume Resistivity	Ω ·cm	> 10^14
Dielectric Constant	–	8.20
Dielectric Strength	kV/mm	16

1. Composition & Structure

Silicon Carbide (SiC): Provides excellent thermal conductivity, high strength, and resistance to thermal shock and corrosion.

Nitride Bonding (Si₃N₄ or other nitride phases): Enhances mechanical properties and oxidation resistance by forming a strong ceramic bond between SiC grains.

2. Key Properties

High-Temperature Resistance: Can withstand temperatures up to 1500°C (2732°F) or higher.

Thermal Shock Resistance: Low thermal expansion and high thermal conductivity prevent cracking under rapid temperature changes.

Corrosion Resistance: Resists acids, alkalis, and molten metals/slag.

Mechanical Strength: High hardness and wear resistance.

Oxidation Resistance: Nitride bonding improves stability in oxidizing atmospheres.

Applications

Metal Melting & Casting: Used as riser tubes in foundries to feed molten metal into molds, reducing shrinkage defects.

Glass Industry: Employed in glass tank furnaces for handling molten glass.

Chemical Processing: Ideal for reactors, heat exchangers, and piping in corrosive environments.

Heat Treatment Furnaces: Used for radiant tubes and protective sheaths.

Advantages Over Other Materials

Outperforms traditional refractory materials like alumina or zirconia in thermal shock resistance.

Longer service life than oxide-bonded SiC due to nitride bonding’s stability.

More cost-effective than pure reaction-bonded silicon carbide (RBSC) for some applications.

Packing & Delivery

As a ceramic material, silicon nitride is quite fragile in a lot of cases. Our silicon nitride tube

are carefully handled to minimize damage during storage and transportation. Suitable

outer boxes and inner cushioning materials are used for Si3N4products, vacuum packing is

also engaged for some of the parts.

Company Profile

FAQ

Why us？
* Professional manufacturer since 1997.
* Strict quality control on production process and tolerance.
* Free samples available
* Customized production based on your drawing or specification
* On-time delivery and reliable support and service
* Inventory available for quick shipment
* We keep confidentiality of all the drawings and business information between us.

Are you a trading company or a manufacturer?
* We are a manufaturer.

Can you provide the free samples?
* Yes,we can offer free sample if we have it in stock,but the courier fee is to be collected.

Do you accept customized production based our specification?
* Yes,we offer OEM and ODM service. Just send us your drawing if you have it. If you don’t have a drawing, just tell us your idea,
we will work out the drawing for you.

What's the delivery time?
* 7 working days for standard products 30 days for customized products.

What is the MOQ?
* No limit to the quantity. We can offer the best proposal and solutions according to your condition.

What is the payment terms you accept?
* T/T,LC,Western Union,moneygram are acceptable.

How to deal with the faulty?
* Firstly, Our product are produced in strict quality control system and the defective rate will be less than 2%.
If there are problems with the product, we will provide free replacement.