Box type atmosphere furnace

As a commonly used electric heating equipment in the heat treatment industry, box type atmosphere furnaces are widely used in university laboratories, industrial and mining enterprise laboratories, metal heat treatment enterprises, etc. Due to their low price, they are highly favored. Let’s take a detailed look at the principle and application scope of the box type atmosphere furnace below!

1600 ℃ Box type Atmosphere Furnace (Click on the picture to view product details)

1. Core function: precise temperature control and atmosphere protection
Box type atmosphere furnace is an experimental and industrial equipment that achieves high temperature environment through electric heating and precisely controls the composition of the atmosphere inside the furnace.
Its core functions include:
High temperature treatment: The maximum temperature can reach 1700 ℃ (some models are even higher), meeting the requirements of metal melting, ceramic sintering and other processes.
Atmosphere control: Nitrogen, hydrogen, argon and other gases can be introduced to create an inert, reducing or oxidizing environment, preventing material oxidation, decarburization or promoting specific chemical reactions.
Sealed design: using glove box technology or side opening door sealing structure to ensure stable atmosphere without leakage, supporting pre vacuum function (some models), saving gas consumption.

2. Technical principle: Multi system collaborative work
The box type atmosphere furnace achieves its functions through the following systems:
Heating system:
Heating element: resistance wire, silicon carbide rod or silicon molybdenum rod, which generates heat through current.
Temperature control instrument: intelligent PID controller, temperature control accuracy ± 1 ℃, supports multi-stage program heating (such as more than 30 stages), adapts to complex process curves.
Atmosphere control system:
Gas supply: Multi channel mass flow meter (MFC), precise adjustment of gas flow rate (accuracy ± 0.2% F.S).
Gas mixing device: supports the mixing of multiple gases to meet the requirements of composite atmospheres (such as nitrogen hydrogen mixtures).
Exhaust gas emissions: Real time discharge of the gas generated by the reaction to maintain stable pressure inside the furnace.
Sealing and insulation:
Furnace material: Lightweight alumina ceramic fiber, high temperature resistance (≥ 1600 ℃), good insulation effect, lightweight and strong thermal shock resistance.
Furnace door design: Side or top opening doors, equipped with sealing strips, handwheels, and door plugs to ensure that the atmosphere does not leak.

3. Application area: Cross industry solutions
Box type atmosphere furnaces are widely used in the following fields due to their multifunctionality:
Metallurgical industry:
Metal heat treatment: annealing, quenching, aging treatment to improve the microstructure (such as annealing steel to eliminate internal stress).
Powder metallurgy: sintering metal powders to prepare high-density parts (such as hard alloy cutting tools).
Ceramic industry:
Ceramic sintering: controlling the atmosphere to achieve densification and improve strength (such as alumina ceramic sintering).
Glaze preparation: Low temperature firing of microcrystalline ceramic glaze to optimize optical properties.
Semiconductor manufacturing:
Wafer processing: oxidation, diffusion, annealing, controlling electrical properties (such as silicon wafer oxide layer growth).
Thin film deposition: Assisted by PECVD or PVD processes, depositing dielectric films (such as SiNx anti reflective films).
New Energy and Environmental Protection:
Solar cells: Preparation of Al ₂ O3/SiNx laminated films for PERC cells to improve conversion efficiency.
Catalyst regeneration: Restoring the activity of exhaust gas treatment catalysts (such as V ₂ O ₅ – WO ∝/TiO ₂ catalyst calcination).
Laboratory research:
Material synthesis: preparation and characterization of nanomaterials and optical materials.
Biopharmaceuticals: Protein crystallization experiments, heat treatment of biological samples.

4. Equipment advantages: high efficiency, safety, and environmental protection
Efficient and energy-saving:
Rapid heating: The heating rate can reach 10-20 ℃/min, shortening the heat treatment cycle.
Uniform heating: The furnace temperature uniformity is ≤± 5 ℃, ensuring process consistency.
Thermal insulation material: Ceramic fibers reduce heat loss and increase energy utilization by over 30%.
safeguard:
Multiple alarms: over temperature, disconnection, overcurrent protection to ensure safe operation of the equipment.
Parameter locking: Built in password control to prevent accidental operation.
Environmental compliance:
Clean heating: Resistance wire heating has no combustion process and no exhaust emissions.
Waste gas treatment: equipped with purification devices to meet environmental protection requirements.

5. Selection suggestion: Customize according to needs
Temperature range:
Conventional model: 950 ℃ (suitable for most metal heat treatments).
High temperature models: 1200 ℃ or 1700 ℃ (to meet the needs of ceramics, semiconductors, etc.).
Atmosphere control:
Basic type: single gas (such as nitrogen) protection.
Advanced type: Multi gas mixing, vacuum pre pumping function.
Furnace size:
Laboratory type: with a capacity of 10-50L, suitable for small-scale experiments.
Industrial type: with a capacity of over 100L, supporting continuous production.

Commonly used high-temperature vacuum atmosphere muffle furnace (click on the picture to view product details)

6. Summary: Industry value of box type atmosphere furnace
Box type atmosphere furnaces have become core equipment in metallurgy, ceramics, semiconductors, new energy and other fields through precise temperature control, atmosphere protection and efficient energy-saving design. Its multifunctionality, safety, and environmental friendliness not only improve production efficiency, but also promote the optimization of material properties. With the development of Industry 4.0 and green manufacturing, box type atmosphere furnaces will continue to evolve towards intelligence (AI process optimization), high production capacity (single furnace processing capacity improvement), and multifunctional integration (composite coating), providing support for high-end manufacturing.Click to learn more Atmosphere Furnaces! Or click on online customer service to learn more about product information!