Influencing factor of electric furnace life: smelting material

Nov 15, 2022


Each user hopes that his/her electric furnace can work for more time

Each user hopes that his/her electric furnace can work for more time, so that the production line can produce more products and bring him/her considerable benefits.

However, when smelting electric furnace is working, many factors will affect the service life of the furnace, such as the structure of the furnace body, the materials of the furnace lining, and the operation methods in the production process. Of course, the melted metal materials will also have an impact on the furnace life. Today, Luoyang Shennai will share this knowledge with you.

First of all, some rust and dirt in the furnace charge and a large amount of sand adhered to the returned material will aggravate the erosion of the furnace lining. Therefore, we should try our best to clean the dirt on the furnace charge before use.

Among the materials to be melted, the high chromium cast iron has the least corrosion effect on the furnace body and lining due to the low melting temperature, but special attention should be paid to the feeding method of the returned materials.

High chromium cast iron has poor thermal conductivity and high brittleness. When cold material is suddenly added to molten iron, it is easy to burst. Especially when the block is large, the impact formed by burst is enough to crack the furnace lining. This requires workers to pay attention to the changes in the furnace at any time when feeding.

Alloy cast steel, heat-resistant steel and stainless steel require high discharge temperature, and the reduction and refining process is long, which has a greater corrosion effect on the basic furnace lining, especially when smelting steel with high silicon content.

If continuous production cannot be carried out, repeated furnace opening and shutdown operations will make the furnace lining bear alternate expansion and contraction, and the furnace lining is easy to crack. Therefore, it is necessary to keep continuous smelting production as far as possible.

This is how the materials of smelting materials affect the furnace life today. I hope it can help you.

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