1. Induction melting furnace routine maintenance points

Every shift and off-duty must be on the lining, induction coil, water-cooled cable, furnace cover mechanism, tilting cylinder, high-voltage electric cabinet, main switch cabinet, tilting furnace control cabinet, intermediate frequency power cabinet, transformer, reactor, hydraulic station The blower dust removal system, water treatment system, cooling water system and leak alarm system are thoroughly inspected, and the working conditions of each system are monitored regularly during the work. In particular, the maintenance of the water treatment system is a big problem. Most users pay little attention to this and their life expectancy is very short. They are not remedable due to water blockage, scaling, water leakage, etc., and should be highly valued. Another difficulty is that the hydraulic system of the tilting furnace and the furnace cover always has oil leakage, which is easy to cause fire, and special attention should be paid to maintenance.

2. Safety protection of induction melting furnace

(1) The cooling water is crucial to the induction melting furnace. The probability of damage to the electric furnace equipment due to the failure of the cooling water is high. The electric furnace should be equipped with two pumps “one for one” and equipped with emergency cooling water. The system, when the power supply is interrupted, can provide cooling water to the furnace in time to avoid damage.

(2) The hydraulic tilting furnace system should also be equipped with two oil pumps of “one use and one spare”. The inlet of the tilting oil cylinder needs to be equipped with a throttle valve to prevent the furnace body from falling suddenly due to the pressure loss of the hydraulic system. When there is iron in the furnace, If it is not possible to send electricity for a long time, it is very dangerous to melt the metal solidified in the furnace by running the electric furnace. Therefore, the hydraulic system should be equipped with emergency measures such as generator or manual pump or security power supply, when the power supply is interrupted. When the metal liquid in the furnace can be poured out in time.

(3) Reliable grounding leak detection and alarm system is very important, and should be checked twice per shift, test its sensitivity and reliability, and often check the use of the lining. The method is to visually measure and measure whether there is a local part in the middle and lower parts. Where there is no meat, the total height and the diameter of the different height parts are measured with an "X" ruler, and compared with 坩埚, to determine the state of use of the lining.

(4) Equipped with computer management system to automatically diagnose and analyze faults, scan and judge the set point parameters of each system such as electrical system and water cooling system, and when the parameters are abnormal, issue alarm signals and display, analyze and record faults. Information, so that the fault will be discovered in the initial state without causing serious equipment damage.

3. Daily management

(1) Induction melting furnaces should be equipped with full-time electric furnace electricians, fitters and water treatment workers, and always monitor during use. Moreover, these personnel should have a high technical level and a strong sense of responsibility, regular training and assessment.

(2) The enterprise shall formulate a strict and thorough use and maintenance management system for induction melting furnace according to the operating instructions of the electric furnace and professional operation specifications, and strictly enforce it to ensure its safe operation.

(3) In the case of continuous operation, there must be preheating time before each furnace opening, and the low power will preheat the furnace lining and the furnace material to dark red, and then gradually increase the power.

(4) The production should be as continuous as possible to ensure continuous operation, continuous casting of the same material, to avoid the situation of not melting the full furnace, and to ensure the quality of the charge and the accuracy of the ingredients.

(5) Inductive melting furnace should be meticulously maintained and maintained during the use of the water treatment system. Cleaning should be carried out according to the requirements. It should be given high priority to ensure the water quality is stable and avoid the dangerous situation such as scaling and water blocking in the water cooling system.

(6) The use of induction melting furnace, repairing furnace, daily maintenance and repair should have detailed records. The supervisors regularly inspect their environment, use, maintenance, and records, and have a reward and punishment system and strict management.