High Temperature Vacuum Atmosphere Furnace Cautions

Here are some points for attention in the use of high temperature vacuum furnace

1. Workpiece-workpiece truck must be cleaned and dried before it enters the furnace to prevent water and dirt from entering the furnace.

2. When each transmission part finds clamp position, inaccurate limit, control failure and other phenomena, it should be eliminated immediately, and not be forced to operate, so as to avoid damage to the machine parts.

3. High-temperature vacuum furnace should not be overloaded. The maximum operating temperature of high-temperature vacuum furnace refers to the allowable surface temperature of components in vacuum, not the temperature of heating materials or the temperature around heating elements. It should be noted that the temperature of the vacuum electrothermal element itself is 100 C higher than that of the surrounding medium or the heated temperature.

4. When measuring the temperature uniformity of high temperature vacuum furnace, attention should be paid to the location and binding of temperature measuring contacts, as well as the distance from heating elements. In high temperature vacuum furnace, brushes, brooms, compressed air and vacuum cleaners are often used to clean the furnace (at least every day or before each shift is used). Impurities such as oxide scales in the furnace should be prevented from falling on the electric heating elements, short circuit occurring, and even burning molybdenum heating rods. The bottom plate, molybdenum heating rod, furnace insulation layer and other heat-resistant steel components should be cleaned up every time they are used for a period of time. Striking is strictly prohibited, and the oxide scales can be carefully removed. If impurities such as iron oxide scale are not removed in time, there will be a fire between the melting point and the insulation layer, which will melt the molybdenum wire.

5. To avoid reactions between heating elements and products, especially contact with vacuum heating elements such as copper, aluminium, zinc, tin and lead, no matter fine powder, molten liquid or steam, to prevent corrosion on the surface of electric heater from forming "pits" with smaller cross-section, and finally overheating and burning.

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