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Silicon Nitride Rings And Rods

Silicon Nitride Rings and Rods introduction Featuring high density and abrasion resistance, fine silicon nitride ceramic is suitable material used for low pressure die casting. silicon nitride sealing pipe/stopper pipe has the most favorable properties of protectiveness, impermeability and...

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Product Details

Silicon Nitride Rings and Rods introduction 

Featuring high density and abrasion resistance, fine silicon nitride ceramic is suitable material used for low pressure die casting. silicon nitride sealing pipe/stopper pipe has the most favorable properties of protectiveness, impermeability and excellent precision. 
The life time of silicon nitride 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.  

Charcteristics of  Silicon Nitride Rings 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

Volume   Resistivity

Ω・cm

>1014

Heat Shock   Resistance

800

Maximum   Available Temperature

1200

Main Features: 
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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Quality control

1. Checking raw material before producing.

2. Checking one by one before the assebling

3. Checking one by one during the production

4. Have the random inspection before the delivery 

Packaging

We ensure to offer safe package and fast delivery for all our customers.

1.for big size cylinders : plastic pallet.

2.for small size cylinders :polywood case with inner foam. 

Shipping

1.By sea / By air / By courier (DHL, UPS, TNT, FEDEX, EMS express are available ).

2.As customized requirements.


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