Medium-frequency induction furnace for metal melting

Abstract

The invention provides a medium-frequency induction furnace for metal melting. The medium-frequency induction furnace sequentially comprises a furnace shell body, an induction coil, an asbestos cloth layer and an internal furnace made of quartz sand from an outer layer to an inner layer; a gap is formed between the induction coil and the furnace shell body; at least one glass fiber cloth layer is arranged in a gap between the asbestos cloth layer and the internal furnace; the furnace shell body comprises a furnace cover and a furnace body arranged below the furnace cover; the diameter of the furnace cover is greater than the diameter of the furnace body; a liquid outlet is formed in the furnace cover; the lower side of the liquid outlet is communicated with a flow guide plate parallel to the furnace body; the furnace body is provided with a reinforcing rib for supporting the flow guide plate; and the shape of the reinforcing rib is adaptive to the shape of a lower bottom surface of the flow guide plate. According to the medium-frequency induction furnace for the metal melting, provided by the invention, the service life of the medium-frequency induction furnace can be effectively prolonged, and the heat-preservation effect of the internal furnace is easy to improved; and the production benefits and the product quality are easy to improve.

Description

technical field [0001] The invention relates to a heating device for metal smelting, in particular to an intermediate frequency induction furnace for metal smelting. Background technique [0002] Metal materials are smelted with intermediate frequency, which is one of the current general smelting methods. The intermediate frequency induction furnace has the advantages of fast smelting, easy control, uniform temperature rise, less oxidation loss, uniform metal composition, and good casting effect. It is being used by more and more casting companies. , Adopted by smelting enterprises. When metal is smelted in an intermediate frequency induction furnace. The intermediate frequency induction furnace is generally composed of a furnace body, a furnace, and an induction coil. The intermediate frequency induction furnace used for metal smelting generally has a furnace structure made of quartz sand in order to easily demould the cast product, but it will contain some ash. Compositi...

AI Technical Summary

Problems solved by technology

The intermediate frequency induction furnace is generally composed of a furnace body, a furnace, and an induction coil. The intermediate frequency induction furnace used for metal smelting generally has a furnace structure made of quartz sand in order to easily demould the cast product, but it will contain some ash. Composition, the intermediate frequency induction furnace will vibrate slightly during actual work, and the ash content will be released due to the vibration. Since the furnace structure is adjacent to the induction coil, the ash content will adhere to the induction coil and affect the normal operation of the induction coil. After using the intermediate frequency furnace for many times, with the loss of a large amount of ash, the furnace will become loose and cracks will easily form, and the metal in the molten state will easily seep out of the gaps in the furnace, and finally the structure of the furnace will not reach Use requirements, resulting in a lower service life of the medium frequency induction furnace

In order to solve the above problems, the common practice is to install a layer of asbestos cloth between the induction coil and the furnace to block the induction coil and the furnace, and to keep the furnace warm. However, due to the large pores of the asbestos cloth, It is difficult to achieve a better effect of blocking ash content, and it cannot better solve the problem of short service life, and the insulation effect of pure asbestos cloth is also limited, and it cannot achieve a better insulation effect, which increases production costs and may also affect adverse effect on product quality

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