Silicon nitride ceramic stopper pipe

Silicon nitride ceramic has high density and abrasion resistance, it is most suitable material used for low pressure die casting.

 

The stopper pipe has the most favorable properties of protectiveness, impermeability and excellent precision. The life time of the 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.

 

Features

1. Low energy consumption

We use submergible heating element and heat source is in the centre of aluminum solution .So we have great heat-transfer performance which can save more energy consumption than traditional heating methods..

 

2. Low raw material loss ,improve the quality of die casting parts

Heat source in the centre of aluminum solution can fully ensure it heated evenly. Aluminum solution at the top of the kiln will not be oxidated because of overheated. As thus, the loss of aluminum will be lower, the quality of aluminum casting parts will be better, at the same time, the damage due to residue of aluminum dregs in the kiln wall will be reduced.

 

3. long life time

Excellent corrosion resistance, the best mechanical strength and excellent thermal shock resistance, these characteristics extend the lifespan.

 

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 .