The cooling water of the medium frequency electric furnace must be filled with filter net before entering the furnace. Some users directly extract the river water as the cooling water of the medium frequency furnace, so the foreign objects in the river can easily block the induction coil. Even if there is no foreign body entering but for a long time, the cooling water flow of the induction coil will be reduced and the cooling water flow of the induction coil will be formed in the inner coil copper pipe for a long time. Resulting in poor circulation of induction rings, affecting the overall performance of intermediate frequency furnaces. Induction coil in the presence of the blocking situation, if you can find the blocked position, can use iron wire to the induction coil copper tube, first two heads, find the shortest distance, see can not be hooked out of the inside, if the oxide and other oxide blocking induction coil, can be injected into dilute sulfuric acid method, if it is It does not melt, and the hook does not come out.
Only the induction coil wood column open, with the fire induction coil coil, the induction coil copper tube heating to a certain temperature (not burning red on the problem), the inside of the debris can be burned out. If you know that the approximate location can also be heated locally by oxygen, it is also possible to make the coil deformation too large when heating, otherwise it will be a bit troublesome when it is loaded back. The above method is effective and has no harm to the induction coil.
However, it is important to note that if the surface of the coil is burned or processed in other ways, it will inevitably cause damage to the surface insulation. It should be repaired with TSC-L super high temperature insulating varnish or APC-H+ high temperature arc resistant insulating enamel in time to ensure that the coil will not be fired after reinstallation.
