Using induction heating furnace has what some precautions it?

1 medium frequency induction furnace should use special rectifier transformer to increase the supply voltage and limit the no-load operation of the transformer.

2 Standard installation, shortening the connection between high voltage, transformer, intermediate frequency power supply and electric furnace, using high purity T2 copper or oxygen-free copper, especially induction coil and water-cooled cable, increasing the cross-sectional area can effectively reduce current heat loss .

3 According to the casting process, select the appropriate capacity and frequency of the intermediate frequency electric furnace, increase the power density to improve the melting efficiency and reduce the additional loss.

4 The steel shell body with the furnace cover is preferred to reduce the heat loss and electromagnetic loss of the furnace wall and the furnace mouth. The furnace body joints prevent short-circuiting of metal contacts during operation.

5 Develop a reasonable casting process, from the modeling, material selection, melting, pouring, heat treatment, cleaning and other standard process operations, scientific management to reduce energy consumption.

6 Strengthen equipment management and maintenance, reduce the failure rate, and ensure smooth production.

7 Always check whether the contact parts of each conductive system are in good contact, especially if the screws at the connection between the water-cooled cable and the induction coil are tight. The insulation table and the insulated boots must be inspected once a year.

8 During the smelting process, it is strictly forbidden to stop power and stop water. During the smelting process, the water temperature and water pressure should be paid attention to at any time, so that the water pressure is kept at 0.1 ~ 0.3MPa , and the outlet water temperature is kept below 55 °.

9 When feeding, the cold and wet charge should be dried first, and can not be directly added into the melt. It is best to avoid metal cutting in the first furnace, because the metal cutting can penetrate into the lining gap; the furnace must be heated to about 1000 °C. When the iron is poured, the heating of the furnace can be added to the iron block for induction heating.

10 furnace material freeze sealing time can not be too long, so as not to cause furnace explosion accident; after sintering the furnace lining, it is recommended to use 30 ~ 50 % of rated power, continuous work more than 5 furnaces.