How to choose a vacuum tube furnace?

When choosing a vacuum tube furnace, multiple factors need to be considered to ensure that the selected equipment can meet the specific needs of experiments or production. Here are some key selection points:
1. Clearly define the purpose and requirements
Application areas: Firstly, determine which fields the vacuum tube furnace will be used in, such as metallurgy, chemical industry, light industry, semiconductor, electric vacuum, food, medical, etc. The requirements for equipment may vary in different fields.
Functional requirements: Determine the required parameters such as heating temperature, vacuum degree, heating speed, and temperature control accuracy based on specific experimental or production needs.
2. Consider equipment model and specifications
Design temperature: Vacuum tube furnaces can be divided into three types based on design temperature: low temperature (below 1200 ℃), medium temperature (below 1500 ℃), and high temperature (above 1500 ℃). The selection should be based on the temperature requirements of the experiment or production.
Heating zone length: The length of the heating zone determines the length of the constant temperature zone, which in turn affects the uniformity and stability of the experiment. When selecting, the length of the heating zone should be determined based on specific needs.
Number of temperature zones: According to experimental requirements, different types of vacuum tube furnaces such as single temperature zone, double temperature zone, or triple temperature zone can be selected. Multi temperature zone equipment can form gradient temperature zones of different temperatures, suitable for more complex experiments or production needs.
3. Pay attention to device configuration and performance
Heating element: Heating element is one of the core components of vacuum tube furnace, and its material and performance directly affect the heating efficiency and stability of the equipment. Common heating elements include alloy heating wires, silicon carbon rods, and silicon molybdenum rods.
Furnace materials: The selection of furnace materials has a significant impact on the high temperature resistance and service life of equipment. Common furnace materials include quartz furnace tubes, stainless steel furnace tubes, corundum tubes, etc.
Cooling system: Vacuum tube furnaces generate a large amount of heat during operation, so a reliable cooling system is needed to ensure the normal operation and service life of the equipment.
4. Consider environmental and safety requirements
Environmental requirements: When purchasing a vacuum tube furnace, ensure that the equipment meets local environmental requirements. The equipment should be equipped with an effective exhaust gas treatment system to reduce environmental pollution.
Safety performance: Safety is an important factor that cannot be ignored when choosing equipment. Equipment with comprehensive safety protection measures, such as overheating protection, overcurrent protection, leakage protection, etc., should be selected. At the same time, the operating interface of the device should be clear and easy to understand, making it convenient for operators to operate and maintain correctly.
5. Reference price and after-sales service
Price factor: There is a significant price difference among vacuum tube furnaces of different models and specifications. When choosing, the relationship between price and performance should be balanced based on budget and actual needs.
After sales service: Good after-sales service is an important guarantee for ensuring the long-term stable operation of equipment. Suppliers with a comprehensive after-sales service system should be selected to obtain timely technical support and maintenance services during equipment use.
In summary, when choosing a vacuum tube furnace, multiple factors need to be considered comprehensively, including usage and requirements, equipment model and specifications, equipment configuration and performance, environmental and safety requirements, as well as price and after-sales service. By carefully comparing and evaluating the characteristics and advantages of different equipment, one can choose the vacuum tube furnace that best suits their needs.