Points to note when purchasing intermediate frequency furnace heating coils

The intermediate frequency furnace is a common and familiar non-standard induction heating equipment. The intermediate frequency furnace heating coil is an important component of the intermediate frequency furnace. The heating characteristics of the intermediate frequency furnace determine the design and manufacture of the intermediate frequency furnace heating coil to a large extent. and maintenance. The heating coil is not only related to the service life of the intermediate frequency furnace heating equipment, but also determines the heating quality of the workpiece, including the heating speed of the intermediate frequency furnace, the temperature of the workpiece and the heating efficiency.

1. The structure of the heating coil of the intermediate frequency furnace:

The intermediate frequency furnace heating coil is a spiral induction wire coil wound by a rectangular T2 copper tube according to the design parameters. The diameter of the heating coil coil, the inter-turn distance between the coils and the number of coil turns are based on the heating temperature of the workpiece. Determined by parameters such as heating time, heating efficiency, heating frequency, etc., the entire heating coil includes induction coil, cooling water channel, water nozzle, output copper bar, rubber tube, furnace mouth plate, coil bottom bracket, bakelite column, copper bolt, refractory material, Insulating materials, etc.

The maintenance and use points of the heating coil of the intermediate frequency furnace:

1. The appearance of the heating coil of the intermediate frequency furnace should be checked frequently during use, mainly to check whether the insulation part of the heating coil of the intermediate frequency furnace is bruised or carbonized, whether there is any foreign matter attached to the surface of the coil, whether the insulating backing plate between the coils is protruding and Check whether the assembly bolts of the top tightening coil are loose, and visually check whether the coil tightening screw is loose.

2. The use environment of the intermediate frequency furnace heating coil is relatively poor, especially in the casting and melting workshop, where there is a lot of dust and iron filings. Because iron filings or iron slag are easy to fall on the intermediate frequency furnace coil, it will cause carbonization of the inter-turn wood surface of the intermediate frequency furnace coil. In the case of a short circuit between turns of the intermediate frequency furnace coil, inter-turn ignition occurs, which will break down the copper tube of the intermediate frequency furnace coil and cause an intermediate frequency furnace failure. Therefore, it is necessary to clean up the use site of the intermediate frequency furnace frequently, and the focus is on the heating coil of the intermediate frequency furnace.

3. Always record the cooling water temperature at the outlet of the heating coil of the intermediate frequency furnace, and record the larger and smaller values ​​of the cooling water temperature of each branch of the coil to ensure that the cooling water temperature of the heating coil of the intermediate frequency furnace does not exceed 55 degrees.

4. When replacing the cooling water circuit of the heating coil of the intermediate frequency furnace, pay attention to the direction of the cooling water entering and leaving the heating coil of the intermediate frequency furnace. In this way, it is necessary to pay attention to how much water flow is in the intermediate frequency furnace coil, so as to ensure the cooling effect of the intermediate frequency furnace coil.​​

5. It is necessary to ensure that the lining material of the heating coil of the intermediate frequency furnace is used in good condition, so as to avoid cracks in the furnace lining, so that the oxide skin of the workpiece contacts the insulation of the heating coil of the intermediate frequency furnace, destroying the insulation of the coil, forming a short circuit of the heating coil of the intermediate frequency furnace, and causing damage to the heating coil of the intermediate frequency furnace.