How to choice refractory material for induction furnace lining

refractory material

In the coreless furnace, a core induction furnace, as the IF refractory material for induction furnace for melting gray cast iron, ductile iron, malleable cast iron, vermicular graphite cast iron and, as well as the use of refractory materials, Cast iron alloy, molten carbon steel, alloy steel, high manganese steel. IF Medium frequency induction furnace refractory supplier lining materials selection must have the following characteristics:
1. In a sufficient temperature, no deformation, no melting performance
2. Can have the necessary structural strength at high temperature, and does not produce softening deformation
3. Must be stable at high temperature, does not cause expansion and contraction leading to cracks
4. When the temperature changes drastically or unevenly, it will not break and peel off
5. Can resist the metal solution, slag and furnace gas and other chemical erosion

Mainly divided into the following types of refractories: acid induction furnace refractory china lining materials, the use of high-purity microcrystalline quartz sand, powder, adding high-temperature sintering agent and mineralizer mixture of dry vibration material, strictly control the size and sintering agent added, So no matter with a variety of knotting methods can be obtained dense induction furnace refractory lining material. The product is mainly used for foundry ash iron, ductile iron, carbon steel melting process, but also for continuous high temperature environment, can also be used for titanium and high temperature non-ferrous metal smelting. Neutral lining material is made of corundum sand, powder, adding aluminum magnesium spinel powder and sintering agent and other mixed dry powder material. The particle size distribution in line with the maximum bulk density theory, so through a variety of knotting methods can be obtained dense uniform lining, mainly used for a variety of alloy steel, carbon steel, stainless steel, this material has good thermal shock stability, Sexual and high temperature strength, and in normal use to keep the backing of a certain loose layer. Induction furnace refractory supplier refractory lining materials are made of fused or high-purity magnesia, powder, adding aluminum-magnesium spinel powder and sintering agent. The particle size distribution in line with the maximum bulk density theory, so through a variety of knotting methods can be obtained dense uniform temperature lining, mainly used for a variety of high alloy steel, carbon steel, high manganese steel, tool steel, stainless steel, the material has a high Refractoriness and high temperature strength, and in normal use to keep the backing of a certain loose layer. Coreless induction furnace refractory material due to the role of mineralizer, through the first oven sintering a-phosphorus quartz conversion rate is high, so the oven time is short, with high volume stability, thermal shock stability and high temperature strength, In normal use is backing to maintain a certain degree of loosening.

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Application of refractory material in induction furnace

refractory material

The quality and performance of medium frequency induction furnace lining refractory material have a significant impact on the service life of medium frequency induction furnace.
When the induction coil is energized, it generates a large electromagnetic field and make the Medium frequency induction furnace raw materials produce a large eddy current, resulting in refractories Supplier raw material heating, heating and melting. The raw material is added by adding a metallurgical material such as an iron alloy, melting into the required composition and quality of steel, and cast into cast parts.

General induction furnace is relatively small, mainly used to smelting some of the precision castings steel. In recent years has also used it to smelting stainless steel. The refractory materials for induction furnace used for medium frequency induction furnace is simple, generally are knot material. For the melting of the cast iron induction furnace generally use quartz quality knot material with the cheaper price, the service life is from 20 to 40 furnace times. When smelting some gradual progress steel, the smelting temperature is high, smelting conditions are also more bad, quartz quality knotting material greatly reduced the service life, has been unable to meet the requirements. At this time with magnesia, aluminum magnesia, magnesia-chrome dry knot material, but also the use of silicon-based ramming material, there are some induction furnace used to do the ready-made crucible.
That is, to open the refractory company induction furnace, the good crucible placed in the induction furnace, the crucible and the gap between the induction coil with dry knot material to fight the real, this method is easy to replace, can improve the utilization of equipment.
This refractories crucible is typically cast with refractory castable similar to the chemical composition of dry kneading materials and is hardened and dried. The service life of high-quality alkaline dry ramming material or corundum spinel stone ramming material can reach more than 70 times.

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