Bridgman furnace with the maximum temperature of 1500℃. It is designed for the directional solidification of Polycrystalline Ingots up to 25mm diameter. The heating module & cooling fan with adjustable speed is beneficial to create a large temperature gradient at the interface of the molten / crystalline state. An automatic crucible retrieving system enables the most convenient way for sample loading/unloading. The optional crucible rotation stage can be added at additional cost for single crystal ingot growth.
Bridgman furnace uses:
The equipment is a single crystal superalloy directional solidification equipment integrating high-temperature alloy smelting, pouring, mold shell double-zone heat preservation, and directional solidification. The equipment is mainly based on experimental research, taking into account small-scale industrial demonstration research;
1.2 The single crystal preparation technology used is the seed crystal method and the crystal selection method; the directional solidification technology used is the high-speed solidification method (HRS) and the liquid metal cooling method (LMC);
Technical parameters:
| Main Features | ● The single-heating zones heating module and two cooling fans with adjustable speed can adjust the temperature gradient of the melt / crystal interface at furnace exit
● Φ25mm alumina sample table with temperature test, which can accurately display the temperature at the bottom of the crucible and measure the temperature distribution in the furnace chamber. ● Electric lifting sample table is convenient for customers to load / retrieve sample |
| Power Requirements | ● Voltage: AC380V three-phase
● Power: 9.5KW |
| Working Temperature | ● Max. working temperature: 1500 ℃
● Continuous heating temperature: 1450 ℃ ● Heating element: silicon molybdenum rod |
| Furnace Tube & Flange | ● Corundum tube: size φ40 x 1200 mm L
● Equipped with a set of stainless steel sealing flanges to ensure single crystal growth under vacuum or inert atmosphere |
| Sample Stage | ● Alumina sample table: Φ25 * 25mmH
● An S-type thermocouple is embedded in the bottom of the sample stage, which can measure the temperature of the sample in real time |
| Heating Zones | One heating zone, the total length of the heating zone is 240mm |
| Temperature Control System | ● Use PID to adjust the temperature, can set 30 segments of heating and cooling program
● With over-temperature and broken thermocouple protection ● Temperature accuracy: +/- 2℃. ● S-type thermocouple |
| Cooling Fan | The speed adjustable cooling fans are installed at the bottom exit of the furnace |
| Furnace Travel Distance & Speed | ● As the furnace heater moves upward, the sample is moving downward relative to the furnace heater.
● The maximum travel distance of the furnace heater is 200 mm. ● Travel speed: 0.03-3 mm/hr |