When choosing a box type resistance furnace, multiple factors should be considered comprehensively to ensure that the selected equipment can meet the actual needs of testing or production. Let's take a detailed look at what to pay attention to when choosing a box type resistance furnace!

A commonly used box type resistance furnace (click on the image to view product details)

1. Maximum operating temperature
According to the process requirements, different processes and material treatments have different temperature requirements. For example, metal heat treatment generally ranges from 800 ℃ to 1200 ℃, while ceramic firing may require high temperatures above 1500 ℃. Therefore, it is necessary to first clarify the required operating temperature range to ensure that the maximum operating temperature of the selected resistance furnace can meet the requirements.

2. Furnace volume and size
Determine based on material size: The furnace volume and size are directly related to the size and quantity of materials that can be processed. A resistance furnace with sufficient space to accommodate materials should be selected, while avoiding energy waste caused by excessive size. The common furnace sizes range from 100 × 100 × 100mm to 1000 × 1000 × 1000mm, and can be selected according to actual needs.

3. Temperature uniformity
Pay attention to temperature uniformity indicators: For experiments or production processes that require precise temperature control, temperature uniformity is important. Resistance furnaces with good temperature uniformity should be selected to ensure temperature consistency during experiments or production processes, improve product quality, and enhance the accuracy of experimental results.

4. Temperature control accuracy
According to the accuracy requirements, the temperature control accuracy is usually between ± 1 ℃ and ± 5 ℃, and the price of high-precision controlled resistance furnaces is relatively high. The selection of a control system with corresponding accuracy should be based on the requirements for temperature control accuracy in experiments or production. For example, temperature sensitive chemical experiments may require a resistance furnace with temperature control accuracy within ± 1 ℃.

5. Heating element and heating rate
Understand the type of heating element: The type and quality of heating element will affect the heating efficiency and durability of the resistance furnace. Common heating elements include iron chromium aluminum alloy wire, silicon carbon rod, silicon molybdenum rod, etc., which can be selected according to actual needs.
Consider heating rate: Some processes have specific requirements for heating rate. If rapid heating is required, a resistance furnace with corresponding performance should be selected.

6. Furnace material
Selection based on usage conditions: The choice of furnace material should be determined based on the working temperature and the chemical properties of the processed material. Common materials include refractory bricks, ceramic fibers, alumina, graphite, etc., which have different high temperature resistance and chemical stability. If corrosive materials are frequently handled, it may be necessary to choose furnace materials with better corrosion resistance.

7. Atmosphere control function
According to the process requirements, if the process needs to be carried out in a specific atmosphere environment, such as inert atmosphere, reducing atmosphere, etc., a resistance furnace with corresponding atmosphere control function should be selected. For example, in the heat treatment process of certain metals, it may be necessary to perform it in an inert atmosphere such as nitrogen to prevent oxidation.

8. Safety and durability
Pay attention to safety functions, including overheating protection, leakage protection, etc., to ensure the safety and reliability of the resistance furnace during use.
Consider durability: The overall structure, material, and manufacturing process of the resistance furnace will affect its durability and service life. A resistance furnace with a sturdy structure, excellent material quality, and good manufacturing process should be selected.

9. Brand and after-sales service
Choose a brand with a good reputation: Brands with a good reputation usually have more guaranteed quality and after-sales service for their products. You can learn about the reputation of manufacturers and products by consulting user reviews, industry reports, and other sources.
Understand after-sales service: Ensure that the manufacturer can provide timely and good after-sales service and technical support, so that problems encountered during use can be resolved in a timely manner.

10. Budget
Combining budget selection: There is a significant price difference for box type resistance furnaces with different specifications and performance. On the premise of meeting the demand, suitable products should be selected based on one's own economic strength.

1400℃ Box Muffle Furnace(click on the image to view product details)

Summary:
When choosing a box type resistance furnace, multiple factors such as maximum operating temperature, furnace volume and size, temperature uniformity, temperature control accuracy, heating elements and heating rate, furnace material, atmosphere control function, safety and durability, brand and after-sales service, and budget should be comprehensively considered. By carefully evaluating one's actual needs and usage conditions, one can choose a box type resistance furnace that is suitable for oneself.Click to learn more Muffle furnaces! Or click on online customer service to learn more about product information!