Introduction of characteristics and safe operation of copper melting equipment in intermediate frequency furnace-Kehua
The intermediate frequency furnace is a new type of machining equipment, and this kind of equipment is often seen in the metallurgical processing industry. It mainly processes metal materials through induced current. Let us and Kehua understand the characteristics and safe operation of the intermediate frequency furnace copper melting equipment. . Intermediate frequency furnace melting copper one, intermediate frequency furnace is a power supply device that converts power frequency 50HZ alternating current into intermediate frequency (above 300HZ to 1000HZ), converts three-phase power frequency alternating current into direct current after rectification, and then converts direct current into adjustable The intermediate frequency current supplies the intermediate frequency alternating current flowing through the capacitor and the induction coil, generates high-density magnetic lines of force in the induction coil, and cuts the metal material contained in the induction coil, generating a large eddy current in the metal material. 2. Equipment Features Saving Features: Fast heating speed, high production efficiency, less oxidative decarbonization, saving materials and costs, and extending the life of the mold. Because the principle of intermediate frequency induction heating is electromagnetic induction, its heat is generated in the workpiece itself, and ordinary workers use intermediate frequency electric furnaces The continuous work of the forging task can be carried out ten minutes after going to work, and there is no need for professional furnace workers to burn and seal the furnace in advance. Due to the fast heating rate of this heating method, there is very little oxidation. The oxidation burning loss of the intermediate frequency heating forging is only 0.5%, the oxidation burning loss of the gas furnace heating is 2%, and the coal burning furnace reaches 3%. Compared with a coal-fired furnace, a ton of forgings can save at least 20-50 kilograms of steel raw materials. Its material utilization rate can reach 95%. Because this heating method heats evenly and the temperature difference between the core surface is extremely small, the life of the forging die is greatly increased in forging, and the roughness of the surface of the forging is less than 50um. Compared with gas heating, it can save 5%~40% energy. Good heating quality can reduce scrap rate by 1.5%, increase productivity by 10%~30%, and prolong mold life by 10%~15%. Environmental protection features Superior working environment, improved workers' labor environment and company image, no pollution, low energy consumption Compared with coal furnaces, workers will no longer be roasted and smoked by coal furnaces under the scorching sun, and can achieve The requirements of various indicators of the environmental protection department, and at the same time establish the company's external image and the future development trend of the forging industry. Induction heating is the most energy-saving heating method in electric heating furnaces. The power consumption of a ton of forgings heated from room temperature to 1100 ℃ is less than 360 degrees. The heating is uniform, the temperature difference between the core surface is extremely small, and the temperature control accuracy is high. The application of temperature control system can realize precise control of temperature and improve product quality and qualification rate. 3. Precautions for safe operation before the furnace is opened. The electric equipment, water cooling system, inductor copper tube, etc. must be checked before the intermediate frequency electric furnace is opened. The furnace can only be opened when these equipments are in good condition to ensure heat treatment. The safety of the furnace, otherwise it is forbidden to open the furnace; determine the personnel who are specially responsible for power transmission and furnace opening, and the responsible personnel shall not leave their posts without authorization, and the external conditions of the inductor and the crucible must be supervised during work to prevent anyone from touching the furnace after power transmission. Touching the sensor and cable will affect the normal operation of the intermediate frequency electric furnace or cause a safety accident. Precautions after opening the furnace After the intermediate frequency electric furnace is opened, when charging, the charge should be checked to avoid mixing inflammable and explosive and other harmful substances. In order to prevent the phenomenon of capping, it is strictly forbidden to directly add cold material and wet material to the molten steel, and do not add large blocks after the molten liquid is filled to the upper part; in order to avoid explosion accidents, it is necessary to ensure that the pouring site and furnace There is no stagnant water and no obstacles in the front pit; two people are required to cooperate with each other when pouring, and the remaining molten steel can only be poured at the designated location, and cannot be poured everywhere. Precautions for maintenance When maintaining the intermediate frequency electric furnace, the interior of the intermediate frequency generator room should be kept clean, and the stacking of inflammable and explosive items is strictly prohibited. Repair the furnace with excessive melting damage in time, avoid mixing iron filings and iron oxides when repairing the furnace, and ensure the compactness of the crucible. Intermediate frequency furnace copper melting This is what Kehua introduced to us about the characteristics and safe operation of intermediate frequency furnace copper melting equipment. This new type of machine and equipment is indeed very good, but we must pay attention to safety according to the operation process during processing and use. .