High temperature atmosphere furnaceIt is mainly used in university laboratories and industrial and mining enterprise laboratories for chemical analysis and physical determination, as well as sintering and dissolution of metals, ceramics, etc. It is also used for rubber extrusion, pre firing, and firing of electronic components, powder metallurgy, magnetic materials, quartz materials, and other products. It can also be used for heat treatment processes of other materials. The furnace body adopts a double-layer furnace shell structure, high-performance insulation material, and is equipped with a cooling fan, which lowers the surface temperature of the furnace body and saves 60% energy compared to ordinary kilns. The furnace door and top are sealed with high-temperature silicone rubber, which can be pre evacuated and can be filled with various inert gases.
High temperature atmosphere furnacePrecautions for use:
1. Workpiece - The workpiece cart must be cleaned and dried before entering the furnace to prevent moisture and dirt from entering the furnace.
2. When any transmission components are found to be stuck, the limit is inaccurate, or the control fails, they should be immediately eliminated and not forcefully operated to avoid damaging the parts.
3. Cannot be used under overload. The higher operating temperature refers to the surface temperature of the component allowed in vacuum, not the temperature of the heating substance or the temperature around the heating element. It should be noted that the temperature of the vacuum electric heating element itself is 100 ℃ higher than the temperature of the surrounding medium or the temperature being heated.
4. When measuring temperature uniformity, attention should be paid to the positioning of the temperature measuring contacts and the distance from the heating element. Regularly (daily or before each shift) clean the furnace with brushes, brooms, compressed air, vacuum cleaners, etc. to prevent impurities such as oxide scales from falling onto the electric heating elements, causing short circuits and even burning out the molybdenum heating rods in severe cases. The heat-resistant steel components such as the bottom plate, molybdenum heating rod, and furnace insulation layer should be cleaned after a period of use, and knocking is strictly prohibited. The oxide skin can be carefully removed. If impurities such as iron oxide scale are not removed in time, the melted area will ignite with the insulation layer, causing the molybdenum wire to melt.
5. To avoid reactions between heating elements and products, especially when copper, aluminum, zinc, tin, lead, etc. come into contact with vacuum heating elements, whether it is fine powder, melt, or steam, to prevent erosion and formation of "pits" on the surface of the electric heating element, reducing the cross-sectional area and causing overheating and burning.
6. After heating up, the vacuum system should not be suddenly destroyed, and the furnace door should not be opened. Before filling the atmosphere, the vacuum gauge switch should be turned off to prevent aging of the vacuum gauge. When the temperature exceeds 400 ℃, rapid cooling is not allowed. Vacuum heating elements are prone to oxidation under high temperature, poor vacuum degree, and large changes in temperature and temperature. For molybdenum heating furnaces, during normal use and maintenance, attention should be paid to cooling them to below 200 ℃ before stopping the supply of protective nitrogen gas. The furnace door can only be opened below 80 ℃.
7. The cooling system is an important part. The cooling water circuit should be kept unobstructed, otherwise the water temperature will rise and cause shutdown. This is a problem that is often overlooked in work and can lead to significant damage when left unmanaged.