Silicon Nitride Heater Protection Tube

Good casting will be depend on temperature control. For optimum pouring temperature of molten metal, heater will be used for steady temperature. Silicon nitride heater protection tube will not only protect the heater also make rapid and uniform heating of molten metal during casting. Usually immersion heater will be used in non-ferrous metallurgy due to the corrosion resistance, fast heat conductivity of silicon nitride. Silicon nitride heater protection tube can be used in electricity or gas heating, the efficiency is higher and service life is long.

 

Features

1.Resistance to thermal shock

2.Resistance to corrosion

3.Low- wettability

4.Low heat conduction

5.High strength,long life

 

Applications

The silicon nitride heater protection tube is applied in Low-pressure die casting, silicon nitride heater protection tube can protect the heaters to avoid any corrosion in non-ferrous metal industry and make the heating evenly and rapidly.

 

Silicon Nitride Ceramic Properties

Item	Unit	Si3N4
Bulk density	g/cm3	3.2
Water absorption	%	0
Bending strength	Mpa	750
Young modulus	Gpa	280
Fracture toughness	Mpa.m1/2	6.5
Poisson’s ratio	—	0.28
Vickers hardness	Gpa	15
Coefficient of linear expansion	x10-6℃	3.4
Thermal conductivity	W/(m.k)	26
Specific heat	J/(g.k)	0.65
Volume resistivity	Ω.cm	>10^14
Heat shock resistance	℃	800
Max operation temp.	℃	1150

 

Size:We could made different sizes according to different drawings .