How to choose a customized 1200 ℃ box type atmosphere furnace?

1, Core performance parameters

Maximum temperature: It needs to reach 1200 ℃ and ensure long-term stable operation.
Temperature control accuracy: Priority should be given to selecting equipment with a precision of ± 1 ℃ or higher to meet the requirements of precision experiments.
Heating rate: Select according to process requirements, such as supporting a heating rate of >= 20 ℃/min for rapid sintering.
Uniformity of temperature field: Require <=± 5 ℃ to ensure consistent temperature at all points inside the furnace and avoid uneven heating of materials.

Gas types: Supports the introduction of inert gases (such as nitrogen and argon), reducing gases (such as hydrogen), and oxidizing gases (such as oxygen).
Gas path design: equipped with multiple independent gas paths, supporting precise control of gas flow (such as float flow meters or mass flow meters).
Vacuum function: Optional vacuum system, supporting pre vacuuming and atmosphere replacement, with a vacuum℃of -0.1MPa or higher.

2, Key component configuration

High purity alumina fibers or mullite fibers are preferred, which have the characteristics of high temperature resistance, low thermal conductivity, and good thermal shock resistance.
The furnace structure needs to be designed reasonably to avoid cracking or deformation caused by thermal stress concentration.

Silicon molybdenum rod (MoSi ₂): suitable for high temperatures above 1200 ℃, with strong oxidation resistance, but avoid rapid cooling and heating.
Resistance wire (such as Kanthal alloy): suitable for medium to high temperature range, low cost, but relatively short lifespan.
Select the type of heating element according to the process requirements and ensure that its power density meets the heating rate requirements.

The furnace door seal adopts silicone O-ring or metal seal to ensure airtightness.
Flange connection or quick opening furnace door design, easy to operate and maintain.

3, Safety and operational design

Overtemperature alarm and power-off protection: When the temperature exceeds the set value, the power will be automatically cut off.
Broken thermocouple protection: automatically stops heating when the thermocouple breaks.
Overcurrent and overvoltage protection: prevent electrical faults from causing safety accidents.
Explosion proof design (optional): Equipped with explosion-proof valves or pressure relief devices for flammable and explosive atmospheres.

Temperature control system: supports PID self-tuning, multi-stage program temperature control, and has temperature curve recording and export functions.
Human computer interface: touch screen or PLC control, intuitive operation, supports switching between Chinese and English.
Remote monitoring (optional): Real time monitoring and fault diagnosis of device status are achieved through IoT technology.

4, Customized services

Customize the effective volume of the furnace according to the sample size to ensure uniform heating.
Common size range: 100 × 100 × 100mm to 500 × 500 × 500mm.

Multi atmosphere switching: supports automatic switching of multiple gases to meet complex process requirements.
Quick cooling: Optional air or water cooling system can be used to shorten the experimental cycle.
Atmosphere circulation: Equipped with a built-in fan or gas stirring device to improve the uniformity of the temperature field.

Equipped with a paperless recorder or data acquisition system to record parameters such as temperature and atmosphere pressure.
Support data export and report generation for process optimization and quality control.

5, Supplier qualifications and after-sales service

Choose manufacturers with ISO9001 quality management system certification to ensure reliable equipment quality.
Assess the manufacturer's research and production experience in the field of high-temperature furnaces, and prioritize selecting brands with good industry reputation.

after-sale service
Response time: Provide 7 × 24-hour technical support, with a fault response time of <= 24 hours.
Training services: Provide equipment operation, maintenance, and upkeep training to ensure users are proficient in using it.