Understand these three details and complete the operation of the melting furnace easily
As an equipment for casting and hot processing of metals, the melting furnace consists of several parts, such as frequency conversion device, furnace body and furnace control. Its working principle is to convert the three-phase power frequency alternating current into direct current, and then convert the output of the inverter circuit into a single-phase intermediate frequency alternating current, and realize the heat treatment of the metal according to the principle of electromagnetic induction.
In order to ensure that the smelting furnace can work efficiently and safely, it is necessary to carry out standardized operation. Today, Hongteng editor will introduce three details about the standardized operation of the smelting furnace.
1. Precautions before opening the furnace
The smelting furnace must be inspected for electrical equipment, water cooling system, inductor copper pipes, etc. before the furnace is opened. The furnace can only be opened when these equipments are in good condition to ensure the safety of heat treatment. Determine the person responsible for sending electricity and opening the furnace, and the person in charge shall not leave the post without authorization. During the work, the external conditions of the inductor and the crucible must be supervised to prevent someone from touching the inductor and cable after the power is turned on, affecting the intermediate frequency electric furnace. normal operation or a safety accident occurs.
2. Precautions after opening the furnace
After the intermediate frequency furnace is turned on, when charging, the charge should be checked to avoid mixing inflammable and explosive and other harmful items. In order to prevent the occurrence of capping, it is strictly forbidden to directly add cold material and wet material to the molten steel, and do not add large blocks after the molten liquid is filled to the upper part; in order to avoid explosion accidents, it is necessary to ensure that the pouring site and furnace There is no stagnant water and no obstacles in the front pit; two people are required to cooperate with each other when pouring, and the remaining molten steel can only be poured at the designated location, and cannot be poured everywhere.
3. Precautions for maintenance
When maintaining the intermediate frequency electric furnace, the interior of the intermediate frequency generator room should be kept clean, and the stacking of inflammable and explosive items is strictly prohibited. Repair the furnace with excessive melting damage in time, avoid mixing iron filings and iron oxides when repairing the furnace, and ensure the compactness of the crucible.
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