Introduction Si3N4 silicon nitride stalk for low pressure die casting
Comparing with cast iron materials, silicon nitride riser tube for low pressure die casting has low heat conduction. Its super heat preservation can prevent the temperature reducing of aluminum solution in low pressure casting. We use the way of GPS to get high density, which makes it possible to keep high mechanical strength when temperature rises. It will reduce the risk of air leakage and damage if load and strength are weak. It is not easy to adhere aluminum, so it makes daily maintenance more convenient.
We provide reletive direction of use and solution of technology and design according to customers’ demands.
Characteristics Si3N4 silicon nitride stalk for low pressure die casting
Regular sizes:
Length mm | Outside diameter mm | Inside diameter mm | Flange OD mm | Flange Length mm |
473 | 61 | 49 | 106 | 10 |
950 | 80 | 60 | 115 | 25 |
1000 | 120 | 100 | 148 | 21 |
1000 | 100 | 80 | 120 | 21 |
630 | 119 | 99 | 180 | 30 |
750 | 116 | 96 | 163 | 15 |
800 | 170 | 150 | 197 | 20 |
1000 | 90 | 70 | 130 | 20 |
Technical Data Sheet of Si3N4 silicon nitride stalk for low pressure die casting
Item | Unit | F-200 | F-500 |
Bulk density | g/cm3 | 3.2 | 3.2 |
Water absorption | % | 0 | 0 |
Bending strength | Mpa | 750 | 800 |
Young modulus | Gpa | 280 | 290 |
Fracture toughness | Mpa.m1/2 | 6.5 | 7 |
Poisson’s ratio | – | 0.28 | 0.28 |
Vickers hardness | Gpa | 15 | 15 |
Coefficient of linear expansion | x10-6℃ | 3.4 | 3.5 |
Thermal conductivity | W/(m.k) | 26 | 50 |
Specific heat | J/(g.k) | 0.65 | 0.61 |
Volume resistivity | Ω.cm | >10^14 | >10^14 |
Heat shock resistance | ℃ | 800 | 900 |
Max operation temp. | ℃ | 1150 | 1150 |