The core function of adding nitrogen input in industrial ovens is to create an inert atmosphere environment with low oxygen or no oxygen. This is usually referred to as "nitrogen protection" or "nitrogen-filled baking".
Preventing oxidation is the most common and primary purpose. When heated in the air (with an oxygen content of approximately 21%), many materials will undergo oxidation reactions, thereby affecting product quality. Adding nitrogen input to industrial ovens can prevent the formation of oxide scale (such as rust) on the surface of metal products during heating, keep the metal bright and clean, and improve the quality of subsequent processes such as electroplating and spraying. Or to prevent the oxidation of component pins, pads and precision films at high temperatures, ensuring the quality of soldering and the long-term reliability of the product. At the same time, it can also prevent chemical and powder materials from undergoing chemical reactions with oxygen at high temperatures, thereby altering their chemical properties.
2. Some materials pose a risk of fire or explosion in high-temperature and oxygen-rich environments. Increasing nitrogen input can suppress combustion and explosion.
In industries such as printing and coating, a large amount of flammable organic solvents (such as alcohol, acetone, and toluene) are volatilized during the baking process. Introducing nitrogen to reduce the oxygen concentration below the limit oxygen concentration can completely eliminate the risk of fire and explosion, which is an important safety measure. For metal and plastic powders, when they reach a certain concentration in the air, they are highly prone to explosion when exposed to open flames or high temperatures. Nitrogen protection can create a safe processing environment.
3. Improve process control and product quality. Heating in an oxygen-free or low-oxygen environment can avoid many side reactions caused by oxygen. In processes such as chip manufacturing and solar cell production, extremely high cleanliness and an oxygen-free environment are essential to prevent the oxidation of silicon wafers, metal electrodes, etc., ensuring extremely high product yield and performance.
4. While filling the oven with nitrogen, the air that originally contained moisture and oxygen inside the oven will also be "driven out". This not only prevents oxidation but also plays an auxiliary drying role, making it particularly suitable for products that are extremely sensitive to moisture.
In conclusion, adding nitrogen input to industrial ovens is to actively control the heating environment rather than passively heating in the air. This is an important technical means used in high-end manufacturing and precision processing.
Clean Dust-free Oven
Clean oven is also known as dust-free oven, mainly using the air filter to purify the environment and avoid fine particles in the air into the chamber. The air inside the chamber is closed and self-circulating, which is repeatedly filtered by the 100-class high temperature and high efficiency air filter, so that the working room is in a dust-free state. The dust-free oven is suitable for pre-treatment baking of silicon wafer, gallium arsenide, lithium niobate, glass and other materials before gluing, hard film baking after gluing and high temperature baking after developing in semiconductor manufacturing. It is also suitable for electronic liquid crystal display, LCD, CMOS, IS, medicine, laboratory and other production and scientific research departments; In addition, the dust-free industrial oven can be used for drying, heat treatment, aging and other high temperature tests of non-volatile and non-flammable and explosive items.
Features of dust-free oven:
1. Structure: the structure of dust-free oven is reasonable, assembled by the box part, the electrical control cabinet, the electric heating and the air duct circulation system.
2, Sealing design: surrounded by argon welding, using high temperature silicone rubber dust-free sealing strip heat insulation, to ensure tightness and cleanliness;
3, External dust treatment: the external material is SPCC steel plate after powder spraying plastic, wear-resistant dust and slag;
4, High efficiency filter: HEPA filter structure clean room, 99.99% effective filtration, cleanliness reached grade 100;
5, Energy saving: insulation material for high-density fiber, heat preservation and energy saving;
6, Layered structure design: the height of the internal chamber layer can be adjusted and freely taken out;
7, Temperature control instrument: automatic control of temperature, constant temperature and time control, setting with over temperature automatic power outage and alarm circuit for reliable control and safe use.
8, Electrical accessories: all use the first-line brand, PID calculus temperature control system and overtemperature protection device, intelligent constant temperature, small temperature difference, suitable for different products of long and short baking.
Product parameters of dust-free oven:
1, Temperature range: from normal temperature to 250℃, constant temperature adjustable
2, External size: H1660*W770*D920mm; internal size: H900*W600*D600mm
3, Heating speed: from room temperature to 200℃ in about 30 minutes
4, Insulation performance: the outer wall temperature of the chamber does not exceed 45℃ (when the temperature inside the chamber reaches 200℃)
5, Temperature control accuracy: ±1℃
6, Temperature uniformity: ±3℃%
7, The use of power supply: 380V/50HZ (3 ∮ 5 wire)
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