Heat-resistant aluminum titanate ceramic riser tube /stalk tube for aluminum wheeling making plant

Product Detail

Aluminum titanate

 has higher melting point(1860?±10?),lower thermal expansion coefficient and excellent heat-shock resistance .Besides,the aluminum titanate don’t infiltrate with the metal melt(especially the non-ferrous metals) and glass melt.Therefore aluminum titanate can be widely used in the conditions of high-temperature resistance?heat-shock resistance and corrision resistance.

 

Low-pressure die casting is a process in which molten metal is transported from a holding furnace via a riser tube into a mould. Riser stalk is the critical part of the process. During traditional production, steel riser tube can not satisfy the requirements of continuous production and high quality, so aluminium titanate becomes ideal material of stalk tube due to its low thermal expansion coefficient, good thermal shock resistance and no wetting by molten metal.

 

The aluminum titanate riser tube is the key part of the low pressure aluminum casting machine,the features are as following:

1,Excellent thermal shock resistance

2,No infiltration with the non-ferrous metal

3,Excellent wear resistance

4,Low thermal-expansion coefficient

5,The service life of the aluminum titanate riser tube can reach 60 days , can enhance the production efficiency and reduce the cost.

Characteristics of riser tubes

Tech Data ---Aluminum titanate ceramic

 

Item	Riser tube
Al2O3%	50-55
TiO2%	40-45
Fe2O3%	=0.2
K2O+Na2O%	=0.02
Density (g/cm3)	>3.3
Heat  conductivity (W/m.k)	0.86-1.00
Flexural strength    (Mpa)	30-35
Porosity (%)	<8
Working temperature  (?)	<1400

 

Item	Standard	Unit
Density	3.2	g/cm3
Porosity	3.8	%
Bending strength	50	MPa
Thermal-expansion coefficient	1.17	10-6/?
Heat-shock resistance	Good

Specification of normal riser tubes:

OD(mm)	ID(mm)	Length(mm)
F78	F58	850
F100	F80	400
F120	F100	600,800
F130	F110	1063
F130	F100	750
F120	F70	1220
F120	F80	950
F100	F60	900
F114	F68	1100
F100	F60	970
F110	F63.5	900
F90	F61	850
F105	F75	1050
F120	F80	930