1.Medium frequency furnace inductor, also known as through inductor, according to the length of the heating workpiece and the diameter of the workpiece, the inductor is long or short. But in general, the intermediate frequency furnace sensor is generally relatively long (refers to the axial direction of the heating workpiece), the purpose is to, in the case of the heating workpiece beat unchanged, can ** heating temperature and core surface temperature difference.

2. At present, there are basically two types of lining assembly for intermediate frequency furnace inductors, one is knotted lining and the other is assembled lining.

3. Whether it is knotted lining or assembled lining, long-term work at high temperatures will change (mainly thermal expansion and contraction and oxidation). If used improperly, there will also be heating material collision and extrusion lining phenomenon. Therefore, the use of furnace lining has a certain period of time. This mainly depends on the use of the situation.

4. Once the lining cracks, if it is knotted lining, the crack must be filled with knotting material in time when the crack is not more than 2mm, if the crack is more than 2mm, the lining must be re-knotted; If it is fabricated furnace lining must be replaced. Therefore, the user must take the necessary measures in the actual situation, do not act hastily, cause unnecessary consequences, burn the sensor.

5. During the heating process of the medium frequency furnace sensor, a lot of oxide peel that falls off due to heating of the workpiece will accumulate in the sensor. If the furnace lining is damaged, or there are cracks, cracks, if not cleaned up in time, one is easy to spark, resulting in overcurrent protection of the intermediate frequency power supply, and the other is easy to breakdown the inductor coil and cause a short circuit between the inductor turns. Therefore, the oxide in the sensor furnace is cleaned at least once per shift (8 hours).

6. The induction coil of the medium frequency furnace is usually water, and the heat generated by it is mainly taken away by water cooling. Therefore, there must be enough water flow and pressure to ensure that the copper pipe of the sensor flows through the necessary amount of water. Therefore, the working pressure of cooling water should not be lower than 0.2~0.3Mpa, the inlet temperature is less than 35 ° C, and the outlet temperature is less than 55 ° C. If the water pressure is not enough, it will cause the sensor ring to vaporize and heat. If not discovered in time, the copper pipe will break and the water will spill. The sensor is in a high temperature working condition, at this time, it is likely to explode, so the sensor water cooling is extremely important.

7. After the new sensor that has just been put into production is turned on, it must be baked at low power (generally about 30KW), and the heating workpiece is placed in the induction furnace for about 2 hours. The reason is that during the commissioning process, the sensor must be watered, and after the commissioning, there must be residual water in the sensor copper pipe. Especially in winter, there may be very thin ice. So, the sensor must be damp. In order to maximize the service life of the furnace lining, the newly put into production of the sensor must be baked at low power, and then high-power production begins after 2 hours.

8. The water-cooled guide rail in the sensor is actually the moving track of the heating workpiece, which has been working at high temperature. If the water flow is insufficient or the water pressure is not enough, it will produce gasification, burning red, deformation, and heating the workpiece can not pass through the sensor. Therefore, the water cooling of the water-cooled guide rail is also extremely important.

9. The water-cooled guide rail is worn during use, and the wall thickness of the general water-cooled guide rail is 2mm. Therefore, the use of water-cooled guide rails has a certain period of time. If there is too much wear, it must be replaced. Otherwise, once the water leaks, it will cause the sharp cooling of the lining, which directly affects the use effect of the lining.