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Quality Control of Coreless Induction Furnaces

2022.08.19

The coreless induction furnace uses the principle of electromagnetic induction to realize the heat treatment of metals, and is a very trusted equipment by users.

At the time of design, the coreless induction furnace control circuit board is optimized by computer and optimized by large-scale integrated circuits. It has perfect protection systems such as overvoltage, overcurrent, undervoltage, water shortage, phase loss, voltage and current limiting, Thereby ensuring the reliability and working stability of the equipment.

Today, we will summarize for you how to better control the use of induction furnaces to ensure the output of the production line.

Heat preservation of molten iron: The heat preservation of molten iron at high temperature will cause temperature changes, element burning loss, dissolved gas and changes in the state of the molten iron itself.

Therefore, if long-term heat preservation is required, the temperature of heat preservation should be reduced as much as possible. For example, a small amount of clean and dry return material can be added to cool down, and the surface of molten iron can be covered with slag made of glass and other materials.

Selection of molten iron composition: When several castings are to be cast in the same molten iron, the batches should be made according to the castings with the largest batch or the most important castings.

In the process of pouring molten steel, the carbon content in the furnace will continue to decrease. It can be considered to add an inoculant to adjust first, and then consider the use of a recarburizer.

Change of molten iron quality: If there is ductile iron molten iron remaining in the furnace and you want to melt gray cast iron molten iron, if there is a lot of remaining molten iron, it is best to heat it up to 1550 ° C and keep it for a period of time, otherwise the structure of the casting will be damaged. A lot of messy graphite blocks appear, which affects the performance of the casting.

Oxidation of molten iron: Due to the unclean charge or poor control of the smelting process, it will lead to serious oxidation of the molten iron, affecting various quality problems of castings.

Therefore, we should try to choose a clean and clean charge, and then consider using silicon carbide and silicon-calcium alloy for deoxidation, and then properly heat up and keep warm.

This is what we share today about the quality control of the electric furnace in the smelting process, I hope it can be helpful to you.

Luoyang Judian is a manufacturer of smelting furnaces. You can pay attention to us for a long time and let us provide you with more services.

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