Box-type vacuum furnaces generally consist of a host machine, a furnace, an electric heating device, a sealed furnace shell, a vacuum system, a power supply system, a temperature control system and a transport vehicle outside the furnace. The sealed furnace shell is welded with cold-rolled plates, and the joint surfaces of the detachable parts are sealed with vacuum sealing materials. In order to prevent the furnace shell from deforming after being heated and the sealing material from being heated and deteriorating, the furnace shell is generally cooled by water cooling or air cooling.
The furnace is located in a sealed furnace shell. Depending on the purpose of the furnace, different types of heating elements are installed inside the furnace, such as resistors, induction coils, electrodes, and electron guns. The vacuum furnace for melting metal is equipped with a crucible, and some are also equipped with automatic pouring devices and manipulators for loading and unloading materials. The vacuum system mainly consists of vacuum pump, vacuum valve and vacuum gauge.
It is suitable for high-temperature sintering, metal annealing, new material development, organic matter ashing, and quality testing in universities, scientific research institutes, and industrial and mining enterprises. It is also suitable for production and experiments in military industry, electronics, medicine, and special materials. Why does the vacuum furnace quenching temperature not rise? what is the reason?
1. The first step is to check whether the heating relay in the control box is closed. If not, check whether there is a problem with the circuit or relay. If it is stuck, there may be something wrong with the thermometer on the drying tower, and the temperature display is abnormal.
2. The fan in the electric control cabinet stops spinning, causing the power supply to be shut down. After a while, the power supply is turned on again, and then the power supply is turned off. Just replace the fan. Just like the CPU in the computer case, it will not work when the temperature is high.
3. Then you need to know what the normal temperature is? How long did it take for this problem to occur? Have you communicated with the manufacturer? Usually there is after-sales service. You can consult us even after the post-sale period. It jumped off automatically after the temperature controller or something alarmed. There may be a problem with the heating element, whether it is graphite, molybdenum or nickel-chromium. Measure the resistance value, and then the voltage regulator and secondary voltage.
Post time: Dec-11-2023