1、 Core Extreme Performance Indicators

Ⅰ. Maximum operating temperature
Explanation: The highest temperature that can sustain stable operation in the furnace.
Scope and significance:
Basic level: 1600 ℃ -1800 ℃, suitable for preliminary heat treatment of some materials.
Standard grade: 1800 ℃ -2200 ℃, which can meet the purification needs of most carbon materials, graphitization, and silicon carbide.
High end grade: 2200 ℃ -3000 ℃+, suitable for sintering of the most refractory metals, growth of ultra-high purity silicon carbide crystals, and graphitization of cutting-edge carbon materials.

Ⅱ. Working vacuum

Explanation: The maximum vacuum level that the furnace can reach in an empty furnace and at room temperature.
Indicator: ≤ 5.0 × 10 ⁻⁴ Pa (better than 5.0E-3 Pa is already a good level, and top equipment can reach the level of 10 ⁻⁵ Pa).
Meaning: High vacuum is the foundation for obtaining a clean environment, which can effectively remove water vapor and oxygen in the furnace and prevent material oxidation at high        temperatures.

Ⅲ. Pressure rise rate

Explanation: The key indicator for measuring the vacuum sealing performance of the furnace body. The increase in pressure per unit time in a static vacuum state.
Indicator: ≤ 0.5 Pa/h.
Meaning: The lower the pressure rise rate, the better the sealing of the furnace body, and the outside air cannot penetrate, in order to maintain a high-purity environment for a long time.

Ⅳ. Ultimate oxygen content

Explanation: The residual oxygen concentration in the working area of the furnace when the equipment is working normally (with protective gas introduced).
Indicator: ≤ 3 ppm (top level can be controlled within 1 ppm).
Meaning: This is the golden indicator for measuring the "ultra clean environment". The extremely low oxygen content is the key to ensuring that the material is not subjected to secondary pollution and achieving intrinsic performance.

2、 Uniformity of Thermal Field and Control Accuracy

Ⅰ. Uniformity of temperature field

Explanation: During the constant temperature stage, the difference between the highest and lowest temperature points within the effective working area.
Indicator: At rated temperature, it can reach within ± 5 ℃.
Meaning: A uniform temperature field ensures that all materials in the same batch of material boats undergo identical heat treatment, ensuring consistent product performance and serving as the cornerstone for improving yield.

Ⅱ. Temperature control accuracy

Explanation: The control system has the ability to track the set temperature point.
Indicator: ± 1 ℃.
Meaning: Accurate temperature control is the guarantee for achieving complex process curves, conducting repetitive experiments, and production.

3、 System configuration and key components

Ⅰ. Heating system

Heating element: Made of high-purity graphite, tungsten, tantalum or composite ceramic materials, selected according to different temperature ranges and atmosphere requirements to ensure stability and long life at high temperatures.
Thermal insulation layer: using hard graphite felt/carbon felt or composite shielding structure, balancing excellent insulation effect and low energy consumption.

Ⅱ. Vacuum system

Configuration: Adopting a two-stage pump set of "molecular pump+mechanical pump" or "diffusion pump+mechanical pump" to achieve rapid vacuum pumping and high vacuum degree.

Ⅲ. Atmosphere system

Gas path: All stainless steel gas path, using high-precision mass flow controller (MFC) for precise gas distribution.
Gas purity: It is necessary to use high-purity inert gas (such as 99.999% argon) and gas purification equipment to ensure the purity of the atmosphere from the source.

4、 Intelligence and Security

Ⅰ. Control system

Hardware: Industrial grade PLC+color touch screen.
Software functions:
Programmable control: supports programming up to dozens of heating, insulation, and cooling curves.
Data recording and export: Key data such as temperature, vacuum degree, pressure, etc. are recorded throughout the process, supporting USB export for quality traceability.
Remote monitoring: Supports Ethernet interface for remote operation and monitoring (optional).

Ⅱ. Security protection system

Equipped with multiple interlocking safety mechanisms such as over temperature protection, water cut-off protection, overcurrent protection, overpressure protection, and power-off protection, ensuring the safety of equipment and operators.