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What is the difference between furnace and muffle furnace?

Classification： News

Classification： Company news

Release time：2024-11-05

There are significant differences between furnaces and muffle furnaces in terms of definition and use, structure and working principle, performance characteristics, safety and maintenance. The choice of equipment depends on factors such as specific heating needs, workpiece size, production scale, and safety requirements.
一、Definition and Use
1.furnace
Definition: A furnace is a device used to heat product materials and workpieces.
Application: Mainly used for high-temperature heating of metal products without or with little oxidation for further deep processing. Widely used in many industries such as petroleum, chemical industry, metallurgy, machinery, heat treatment, surface treatment, building materials, electronics, materials, light industry, daily chemicals, and pharmaceuticals.
2.Muffle furnace
Definition: Muffle furnace is a commonly used heating equipment.
Application: Muffle furnace is mainly used for heating treatment of materials, such as ashing, sintering, melting, heat treatment, etc. Muffle furnace is widely used in laboratories and industries, especially in the fields of building materials industry, pharmaceutical industry, analytical chemistry industry, etc.
二、Structure and working principle
1.furnace
Structure: The furnace is usually composed of radiation chamber, convection chamber and chimney.
Working principle: It works in phase change heat transfer mode, heats the medium material through the heat generated by fuel combustion, and then transfers the heat to the workpiece that needs to be heated.
2.Muffle furnace
Structure: The chamber of the muffle furnace is generally made of refractory materials, and there are electric heating wires inside as heating elements.
Working principle: The muffle furnace uses the high temperature emitted by the electric heating element to heat the material in the furnace. The muffle furnace can control the temperature in the furnace by adjusting the power and heating time of the electric heating element.
三、Performance characteristics
1.furnace
Fast heating speed and high thermal efficiency. The atmosphere in the furnace is adjustable and the pressure is controllable. It is suitable for large-scale industrial production and can handle large workpieces.
2.Muffle furnace
The muffle furnace has a wide heating temperature range, generally from room temperature to high temperature (such as above 1600℃).
The muffle furnace has uniform temperature, fast heating speed and is easy to control.
The muffle furnace is suitable for labs and small-scale industrial production, and can handle small or precision workpieces.
四、Security and maintenance
1.furnace
Safety: Regular maintenance and inspection are required to ensure that equipment components are in good condition and prevent safety accidents such as fire and explosion.
Maintenance: Including cleaning the furnace, checking the electrical system, replacing aging parts, etc.
2.Muffle furnace
Muffle furnace safety: It is necessary to regularly check the power cord, temperature control device and other components to ensure the normal operation and safety of the equipment. At the same time, operators need to wear personal protective equipment to prevent accidents such as burns.
Muffle furnace maintenance: including cleaning the furnace, checking the electric heating elements, calibrating the temperature control device, etc.