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- What is the main purpose of a single crystal growth furnace
- What are the application industries of AMB precision brazing furnace
- What are the characteristics of tungsten and tungsten alloy sintering furnaces
- What is the purpose of the degreasing sintering integrated furnace
- What are the high-temperature characteristics of ultra-high temperature sintering furnaces
- Suzhou Meiteng Furnace Industry Co., Ltd
- Tel: 13606236737 (Manager Li)
- Wechat: szamc1997
- Address: No. 2 Fuli Road, Xinzhuang Town, Changshu City
What are the high-temperature characteristics of ultra-high temperature sintering furnaces
source：www.yatongjixie.cn | publish time：2025年08月06日1. Accessibility and sustainability of extreme high temperatures
Ultra wide temperature range: The temperature of conventional high-temperature furnaces is mostly between 1200-1600 ℃, while ultra-high temperature sintering furnaces can stably reach 1800-3000 ℃ (such as graphite heating furnaces that can reach 2800 ℃, tungsten molybdenum heating furnaces that can reach over 3000 ℃), which can meet the sintering needs of special materials (such as ceramic matrix composites, refractory metals, synthetic diamonds, etc.).
Long term high temperature maintenance capability: It can work continuously for several hours to tens of hours at extreme high temperatures (such as sintering ceramic coatings on aircraft engine blades at 1800 ℃ for 5-10 hours), and the temperature fluctuation inside the furnace is minimal (usually ≤± 5 ℃), ensuring that the material fully reacts or densifies at high temperatures.
2. Temperature uniformity and stability at high temperatures
High precision temperature field distribution: By optimizing the layout of heating elements (such as annular heating elements, multi zone independent temperature control) and furnace chamber structure design (such as heat shielding layers, flow guiding devices), the temperature uniformity of the effective temperature zone (i.e. material placement area) inside the furnace can still be guaranteed to be ≤ ± 3-10 ℃ under high temperature conditions (such as 2000 ℃), avoiding uneven sintering of materials due to local temperature differences (such as ceramic body cracking and performance differences).
Anti interference and rapid reheating capability: When the furnace door is opened, materials enter and exit, or external environmental fluctuations occur, the furnace body can quickly compensate for heat loss through an intelligent temperature control system (such as PID regulation), restore the set high temperature in a short time, and reduce the impact of temperature fluctuations on materials (especially suitable for materials sensitive to sintering processes, such as single crystal materials).
3. Controllability of Atmosphere in High Temperature Environments
Adapt to multi atmosphere high-temperature sintering: Ultra high temperature furnaces are usually equipped with atmosphere control systems, which can achieve high-temperature sintering in air, inert gases (Ar, N ?), reducing gases (H ?) or vacuum environments, and can still maintain atmosphere stability at extreme high temperatures (such as vacuum degree up to 10 ?3 -10 ?? Pa, to avoid material high-temperature oxidation).
Corrosion resistance: The furnace lining and heating elements are made of high-temperature corrosion-resistant materials (such as graphite, molybdenum, tungsten, zirconia ceramics), which can withstand gas corrosion at high temperatures (such as carbon and fluorine atmospheres), ensuring long-term stable operation of the equipment.
4. Thermal load and material compatibility at high temperatures
Enduring high-power heat input: The heating elements of the ultra-high temperature furnace (such as graphite rods, tungsten wires, silicon molybdenum rods) can withstand high power density (heating power per unit area), and quickly (such as within 30 minutes) raise the furnace temperature from room temperature to over 2000 ℃, meeting the requirements of rapid heating process.
Suitable for high-temperature material bearing: The load-bearing components inside the furnace (such as crucibles, trays) are made of high-temperature resistant and high-strength materials (such as graphite crucibles, boron nitride trays, tungsten alloy brackets), which can support the materials to be sintered (such as heavy-duty ceramic components) at ultra-high temperatures without reacting with the materials themselves (to avoid pollution).
5. Safety and reliability at high temperatures
Multiple thermal protection design: The exterior of the furnace is equipped with multiple layers of insulation structures (such as insulation cotton and reflective screens). Even if the temperature inside the furnace reaches 2000 ℃, the surface temperature of the furnace shell can still be controlled at 50-80 ℃, avoiding operator burns and reducing heat leakage (energy saving and consumption reduction).
High temperature warning and emergency protection: equipped with over temperature alarm, couple breaking protection, gas leakage detection and other systems. In case of temperature abnormalities (such as overheating, uncontrolled heating) or atmosphere faults, the heating can be automatically cut off and the cooling program (such as inert gas blowing) can be started to prevent furnace damage or safety accidents.
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