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PRODUCT>HEATING ELEMENT
 
  MoSi2 heater
   

classification name distinction criterion specification trading limits
Heating elements 1700  type Element operating temperature 1700℃ is acceptable
LeΦ
6-12W type/U type/L type/all kinds of heterotype / stripe shape
high temperature electric resistance furnace
1800  type Element operating temperature 1800℃ is acceptable
1800J type Element operating temperature≥1800℃
LeΦ
3-12W type

Special,high temperature and high-power electric resistance furnace

1800T type Element operating  temperature≤1800℃
LeΦ
3-12W type U type
Not oxidized special air high temperature electric resistance furnace
Thermocouple protecting tube standard type Element heat- resisting temperature≤1700℃ Producing all kinds of inside and outside  diameter according to customers’ need  Thermocouple whose temperature under 1500℃
High temperature Element heat- resisting temperature≤1800℃ Producing all kinds of inside and outside  diameter according to customers’ need Thermocouple whose temperature under 1700℃
cracker pipe Glass making kiln tube
Distinguish by simple pore diplopore
and porous pore
Length and aperture is optional Glass kiln
MoSi2 powder initial powder
Purity ±98% granularity0.4-4um
 
surface area7.8㎡/ cm
 
Modulate granularity according to customers’ demand
All kinds of spare parts of MoSi2
emery cloth, grinding wheel, other ceramics as well as additive 
Ceramic powder Purity ±90% Modulate granularity according to customers’ demand

Physics characters
Bulk density
Bending strength
Hardness
Apparent porosity
Drawing water rate
Thermal elongation rate
Fracture toughness
Compressive
Strength 
5.8g/ cm3
 
350MPa
12.0GPa
±2%
0
4%
4.5MPa.m1/2
650MPa

 

Chemical property
 
Ant-oxidation in high temperature atmosphere: When MoSi2 bar is used in the high temperature and oxidative atmosphere; it will form a compact SiO2 protecting film in its surface to prevent its continuing oxidized. When the temperature of element is over 1700℃,the SiO2 protecting film whose melting point is 1710℃ will be melted. Due to the surface tension, SiO2 agglomerate into drops and lose protection. The SiO2 protecting film is formed again when the element continues to be used under the oxidative atmosphere.
It must be pointed out is that the MoSi2 heating element can not be used in the temperature between 400℃ to 700 ℃ for long time. Otherwise, the element will be pulverized because of the low-temperature oxidation.
 
Main performance index
Atmosphere influence on the operating temperature of element
Atmosphere
The max element temperature(℃)
 
1700type
1800type
Air
1700
1800
N2 
1600
1700
He  Ar  Ne  Argon, Helium
1600
1700
Dry Hydrogen(dew point) -80℃
1150
1150
Wet Hydrogen(Dew point) -20℃
1450
1450
mixed gas(e . g . 10%CO2, 50%CO, 15% H2
1600
1700
mixed gas(e . g . 40%CO2 , 20%CO)
1400
1450
Cracked and partly burnt ammonia 
1400
1450
 
 

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