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Silicon Nitride Ceramic Stopper Pipe

Silicon Nitride Ceramic Stopper Pipe Introduction Featuring high density and abrasion resistance, fine silicon nitride ceramic is suitable material used for low pressure die casting. silicon nitride (Si3N4) sealing pipe/stopper pipe has the most favorable properties of protectiveness,...

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Silicon Nitride Ceramic Stopper Pipe Introduction

Featuring high density and abrasion resistance, fine silicon nitride ceramic is suitable material used for low pressure die casting. silicon nitride (Si3N4) sealing pipe/stopper pipe has the most favorable properties of protectiveness, impermeability and excellent precision. 
The life time of silicon nitride (Si3N4) sealing pipe/stopper pipe can be used for many years if keeping regular maintenance. Otherwise, incorrect operation and less attention to a maintenance will reduce the life time. 

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Charcteristics of silicon nitride riser tube

Item

Material

Unit

Silicon Nitride

Bulk density

g/cm3

3.2

Water absorption

%

0

Flexural strength

MPa

750

Young's Modulus of Elasticity

Gpa

280

Fracture Toughness

MPa・m 1/2

6.5

Poisson's Ratio

_

0.28

Vickers Hardness

Gpa

13

Coefficient of Linear Thermal Expansion

×10-6/℃

3.4

Thermal Conductivity

W/(m・k)

30

Specific Heat

J/(g・k)

0.65

Main Feature
1.Corrosion resistance 
Outstanding corrosion resistance to molten aluminum alloys and flux contamination free. 
2.Oxidation resistance 
Oxidation rarely accurs at operating temperature(up to 800 C), which allows hi-cera to maintain stable performance for a long service life. 
3.Thermal shock resistance 
Superior thermal shock resistance allows hi-cera protection tubes to be inserted in molten aluminum directly with simple preheating. 
4.Mechanical strength 
The highest strength among ceramics allows a thin wall thickness. 
5.Wear resistance 
Excellent wear resistance gives degassing rotor shafts a long service life at a high speed revolution. 
6.Acid resistance 
Exceptional acid resistance against acids such as hydrochloric acid and sulfuric acid permits removal of sticking matter on the surface with such acids.

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FAQ

Q: Are you trading company or manufacturer ?
A: We are manufacturer in Yixing, China. Welcome to visit our factory!
Q: Do you provide samples ? Is it free or extra ?
A: Yes, we could offer the sample but it is not free.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock or it is 20-30 days if the goods are not in stock, it is according to quantity.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance, balance before shippment. If you have other questions, please feel free to contact us as below.


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