How to choose a high-temperature box type resistance furnace?

When choosing a high-temperature box type resistance furnace, multiple factors need to be considered comprehensively to ensure the selection of a product that is suitable for one’s own needs and has stable performance. Here are some key purchasing points:

1. Temperature requirements
Clarify the maximum operating temperature: Firstly, it is necessary to determine the maximum temperature that the high-temperature box type resistance furnace can reach and ensure that it can be stably maintained at that temperature. The temperature control range of furnaces for different purposes varies, with some reaching up to 1800 ℃ or even higher.

2. Temperature control accuracy
Select according to requirements: Choose a control system with appropriate precision based on the strictness of temperature control in experiments or production. The temperature control accuracy directly affects the quality of the product and the stability of the process.

3. Furnace size
Matching sample size: The furnace size should match the size and quantity of the samples to be processed to ensure sufficient space for heating treatment.

4. Furnace material
High temperature resistance and insulation performance: The furnace lining material needs to be able to withstand high temperatures and have good insulation performance. Common furnace materials include alumina, silicon carbide, zirconia, etc., and the selection should be determined based on the specific usage environment and requirements.

5. Heating element
Type and Durability: Understand the types of heating elements (such as silicon molybdenum rods, resistance wires, etc.) and their durability. The quality and durability of heating elements directly affect the service life and temperature stability of the furnace.

6. Heating rate
Select according to requirements: Choose the appropriate heating rate based on work efficiency requirements. A fast heating rate can save time, but it may also have some impact on the sample, so it needs to be balanced according to specific needs.

7. Thermal insulation performance
Energy saving and stability: Good insulation performance can save energy and ensure temperature stability. When choosing, attention should be paid to whether the insulation material and structural design of the furnace are reasonable.

8. Security
Safety protection measures: Ensure that the selected product has comprehensive safety protection measures, such as over temperature alarm, leakage protection, etc. Safety performance is an important factor that cannot be ignored when choosing high-temperature equipment.

9. Brand and reputation
Choose a reliable brand: Choose manufacturers with good market reputation and brand awareness. These manufacturers usually have more mature technology and a more comprehensive service system, which can provide more reliable products and after-sales services.

10. After sales service
Comprehensive after-sales service: Understand the supplier’s after-sales service policy, including installation and commissioning, operation training, fault repair, and other service contents. A comprehensive after-sales service can ensure timely technical support and assistance during use.

11. Budget
Combining economic strength: Choose suitable products based on one’s own economic strength while meeting demand. Avoid excessive pursuit of high configuration beyond budget range.

12. Special functional requirements
Based on actual needs, special functional requirements such as atmosphere control and program heating should be considered and selected according to actual needs.

In summary, when choosing a high-temperature box type resistance furnace, it is necessary to comprehensively consider multiple factors such as temperature requirements, temperature control accuracy, furnace size, furnace material, heating elements, heating rate, insulation performance, safety, brand and reputation, after-sales service, and budget. By comprehensively comparing and weighing various factors, it is possible to select a high-temperature box type resistance furnace that is suitable for one’s own needs and has stable performance.