Failure of cooling water in bar heat treatment furnace
The bar heat treatment furnace of some heat treatment manufacturers does not have special treatment for the cooling water, so the cooling water must be added with the filter before entering the furnace, because some users may take the river directly as the cooling water of the medium frequency bar heat treatment furnace to save the capital and reduce the cost of production. It is easy to induce the blockage in the induction coil, even if there is no foreign materials entry, but for a long time, the cooling water flow in the induction coil will be formed to reduce the cooling water flow in the induction coil copper pipe for a long time, thus causing the unobstructed flow of the induction coil to affect the overall performance of the medium frequency bar heat treatment furnace. For the blocking position, you can use iron wire to get it out from the induction coil copper tube inside. If the oxide and other oxide blocking induction coil, it can be injected through the method of dilute sulfuric acid. If it is other impurities that do not melt, it is very hard to get them out.
In this case, you have to disassemble the induction heating coil and burn the induction coil with fire for heating to a certain temperature (burning red is not allowable), the debris inside the coil can be burned out. If you know the approximate location, you can also heat locally by oxygen, it is also possible to make the coil deformation not too large when heating, otherwise it will be a bit troublesome when it is loaded back. The above method is effective, and it will not harm the induction coil.
However, it is important to note that if the coil surface of the medium frequency bar heat treatment furnace 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 insulating enamel in time to ensure that the coil will not be fired or drawn after reinstallation.
Contact person: Hailee Ma
Phone: 0086-18932783253(whatsapp, wechat)
Specialist of steel pipe induction heating furnace in China; Glad to be your business partner in induction heating field.
Post time: 07-11-2018