Misunderstandings in the use of ramming materials in intermediate frequency furnaces

well known,Intermediate frequency furnace ramming materialWide range of applications, whether it is cast iron, cast steel, cast copper, ductile iron, gray iron, ordinary carbon steel, high manganese steel, stainless steel, special steel, alloy steel, ferroalloy, alloy copper, etc. There are many misunderstandings in the use of intermediate frequency furnace ramming materials. For example, some customers think that white quartz sand should be used as the raw material when choosing quartz sand for furnace materials. It is believed that the finer the better, and some say that only powder is needed and nothing else. These are formed by not understanding the ramming material of the intermediate frequency furnace. Some people think that the furnace age is good after using the fine material, so they always choose the fine material , and do not want to use relatively coarse materials. This is a misunderstanding. Now, the main demand for quartz sand raw materials is to consider several factors, one is the content of silicon, which is also the content of 2 silicon oxide. 2 silicon oxide must be 99% Above, the higher the other refractories, the better.

Now many use red quartz sand, because red quartz sand has high refractoriness. Generally, the refractoriness limit of quartz is 1760 degrees, while the refractoriness of red quartz can reach 1750 degrees. The refractoriness of white quartz sand is generally 1700 degrees. In addition to iron filings, iron is easily mixed into the quartz processing, so it is necessary to remove iron when producing the ramming material in the intermediate frequency furnace, otherwise it will easily cause the phenomenon of furnace penetration.

As for the ratio of quartz sand particles, the finer the better or the coarser the better. This should be analyzed in detail. For example, if a ton of electric furnace is used, it will not affect the selection of slightly coarser particles, but finer ones can also be used. .If it is a 40-ton intermediate frequency furnace and a 15-ton intermediate frequency furnace, it is not suitable to use very fine particles. For the same 1-ton electric furnace, both coarse and fine particles can be used, as long as the ratio is reasonable. It is mainly a matter of habit . As the saying goes: 3 points for materials and 7 points for use. No matter how good the material is, if the furnace is not good, the use of the same furnace age is not high. Therefore, when everyone uses it, except for the intermediate frequency furnace ramming material should be appropriate In addition to purchasing from the manufacturer, the furnace must be strictly implemented in strict accordance with the instructions given by the manufacturer.