SILICON NITRIDE LIFT TUBE

Featured Product from Zhuhai Cersol Technology Co., Ltd.

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Characteristic

 

  1. High temperature resistance, corrosion resistance, no infiltration with nonferrous metal melt such as aluminum melt.
  2. Excellent thermal conductivity, strong thermal shock resistance and no cracking.
  3. Oxidation resistance and long service life
  4. It can becustomizedaccording to customer requirements and specifications

 

Product Parameter

 

Property

Parameter

Density(g/cm3)

?3.2g/cm3

Apparent Porosity(%)

?0.3%

Rockwell Hardness(HRA)

?93

Maximum Operating Temperature in air(?)

1400

Maximum Operating Temperature in protective atmosphere(?)

1800

Flexure Strength(MPa)

986(20?)?485(1400?)


Specific Heat Capacity?J/g ·K?

0.71

Poisson's Ratio (20?)

0.290

Thermal Conductivity?W/(m·K)?

28.8


Thermal Diffusivity(300?)/(cm2/s)

0.690

Electrical Resistivity(Ω·m)

1.4x105(20?)?4x108(1050?)

 

The lift tube in low pressure casting is one of the key components of low pressure casting machine. During die casting, aluminum melt (temperature 700 ~ 900 ?) is pressed and sent from the lift tube to the mold cavity every 3 ~ 5 minutes. Steel lift tube is used in traditional manufacturing technique. Due to its poor thermal shock resistance, poor corrosion resistance, short service life and frequent replacement, it can not meet the requirements of continuous and high-quality production. Silicon nitride lift tube has become an ideal material for the preparation of lift tube because of its low thermal expansion, good thermal shock resistance and non aluminum adhesion.