What are the temperatures of muffle furnaces?

The temperature range of a muffle furnace is wide, depending on the requirements for heating the sample and the type and configuration of the muffle furnace. The following is a detailed summary of the temperature range of the muffle furnace:

1. Classified by rated temperature
Below 1000 ℃:
Suitable for lower temperature heat treatment applications such as drying, preheating, etc.
1000~1300℃：
Commonly used in heat treatment processes such as melting, annealing, quenching, etc.
Specifically, muffle furnaces at 1100 ℃ and 1200 ℃ are commonly used for annealing and quenching of metals.
1300~1600℃：
Suitable for higher temperature heat treatment requirements, such as annealing and hardening of certain special metals.
Specifically, there are muffle furnaces at temperatures of 1400 ℃, 1500 ℃ (although not explicitly mentioned, it can be inferred that they exist within this temperature range), and close to 1600 ℃.
1600~1700℃：
This type of muffle furnace is suitable for metallurgical experiments and material research at higher temperatures.
1700 ℃ and above:
A muffle furnace at 1800 ℃ is suitable for material research and metallurgical experiments under extreme conditions.

2. Classified by heating element
Box type muffle furnace below 1000 ℃:
Using specific heating elements, suitable for lower temperature ranges.
Silicon carbon rod muffle furnace:
The temperature range is usually between 1100 and 1300 ℃.
Silicon molybdenum rod muffle furnace:
The temperature range can reach over 1600 ℃.

3. Precautions
When using a muffle furnace, the maximum furnace temperature should not exceed its rated temperature to avoid burning out the electric heating elements.
It is best to operate the muffle furnace below the maximum temperature of 50 ℃ to extend the lifespan of the furnace wire.
The operating environment of the muffle furnace should be kept dry, free of conductive dust, explosive or corrosive gases.

In summary, the temperature range of the muffle furnace is wide, ranging from several hundred degrees Celsius to several thousand degrees Celsius. Users can choose the appropriate muffle furnace according to specific experimental or industrial needs. At the same time, attention should be paid to following operating procedures and safety precautions during use to ensure the normal operation of equipment and the safety of personnel.