purging plug are high-end functional refractory materials that do not work continuously during the entire ladle turnover cycle, so different physical and chemical corrosion will occur at different times. Damage to purging plug can be divided into the following categories: 1.Oxygen purging effect From the completion of tapping the ladle to the next steel connection, …
The ladle slide gate plate system consists of ladle well brick, upper nozzle, upper slide gate plate, lower slide gate plate, lower nozzle, and sliding gate mechanism, the structure of which is shown in Figure. 1.The working principle of the sliding gate plate is to make the upper and lower slide gate plate casting holes …
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Ladle purging plug play an important role in the process of molten steel refining. As a refractory product, there will be consumption and damage during use. If the use method is not properly grasped, it will affect normal production and even cause serious production accidents such as steel breakout. The purging plug is located at …
It can be seen from the process flow chart that the production process of magnesium carbon bricks is not complicated, but to produce high-quality products, each process must be strictly monitored, including mixing, moulding, heat treatment (drying) of these links is particularly important in the production of the place. 1.Breaking and crushing Broken crushing is …
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For refractory brick, we may not feel strange. With the progress of society, the application of refractory brick is more and more widely. Refractory brick appear collapse phenomenon in the actual using, so what causes it; Following refractory factory is simple to give you introduced the refractory bricks collapse reason: 1. Red hot refractory brick …
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Only refractory materials with the following two characteristics can be used as the lining of the VOD furnace: 1) It can resist the erosion of high-temperature slag; 2) It has excellent resistance to spalling in a sudden cold and hot environment. At present, the refractory materials used in VOD furnaces are generally magnesia dolomite bricks …
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Long nozzle are subject to complex environmental conditions in the course of their use. Both to face the instantaneous heat brought about by thermal stress and mechanical stress caused by neck fracture or port longitudinal cracking, but also to face the slag on the impregnated parts of the erosion; Not only to face the neck …
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Steel mill ladle is the role of the converter smelting steel transportation to the continuous casting, in the continuous casting ladle rotary table above, 1500 ℃ high temperature steel through the bottom of the ladle nozzle, slide out to the tundish, billet transit suspension, and ultimately from the tundish nozzle to the continuous casting of …
In the traditional production process of ductile cast iron, about 10% of carbon scrap is generally used for dosing. This paper only deals with the production of ductile iron in the induction furnace, improve the proportion of carbon scrap steel use, the production process should pay special attention to some of the problems. According to …
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The stability of continuous casting in the package is to ensure production stability and good quality of cast billet premise. Long life tundish package can reduce the number of times to replace the tundish, which not only reduces the labor intensity of workers, but also can reduce the occurrence of production accidents. Therefore, to improve …
How to solve the problem of tundish sizing nozzle steel clamping Read More »
The tundish monoblock stopper is one of the most important control elements in the continuous casting production process, installed in the intermediate package, with the submerged entry nozzle or tundish upper nozzle, in the continuous casting process to control the flow of steel from the tundish to the crystallizer, in order to ensure the stability …
In view of the causes of various cracks, from the process, operation and other aspects of the introduction of measures to limit and reduce cracks, in order to achieve the best performance of the use of ladle slide gate. 1.Improve the thermal shock resistance of the slide gate material By reducing the coefficient of thermal …
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Understanding the reasons for the destruction of the ladle slide plate, let’s have a general understanding of the sliding gate mechanism of the ladle. The schematic diagram of the structure of the spout and slide plate is shown below: The ladle sliding nozzle is composed of sliding gate mechanism, upper nozzle, slide plate and lower …
The ladle sliding spout consists of upper nozzle, upper slide plate, lower slide plate and lower nozzle, which is the channel for steel to enter the intermediate ladle from the ladle, and plays the role of sealing the steel flow and regulating the flow. Through the related technical improvement, the service life of ladle upper …
The compactness of the crucible has an extremely important impact on its service life. In order to make the crucible dense and the porosity as low as possible, it is necessary to pay attention to the particle size distribution of the refractory material, so that the gaps between the large-grained refractory materials can be filled …
1.Refractoriness When the refractory material is subjected to sufficient high temperature, it will gradually soften and melt into a viscous liquid. Therefore, refractoriness refers to the temperature at which a refractory material can resist high temperatures without melting. It is one of the main aspects of performance of refractory materials. The refractoriness is measured with …
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Our factory have three categories of refractory materials: Acid, Basic & Neutral. Apart from these we can classify refractories into few more categories like – Special refractories, Insulating Refractories, & Cermets. Refractory materials are non-metallic materials with refractoriness not less than 1580℃. Widely used in metallurgy, chemical industry, petroleum, machinery manufacturing, power and other industrial …
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What are the refractories used in furnaces? Heat treatment temperature of the reheating furnace is not high, generally its service temperature is lower than 1300℃. For reheating furnace lining, usually we use Al-Si refractory materials which contains alumina 36-75%. The reheating furnace is used for bloom, continuous casting, small steel ingot to meet the temperature …
Castable lining construction 1. Refractory castable construction 2. Castable stir Mixing time should be no less than 5 minutes. Operation to use a forced mixer, stirring should first dry mixing, then add 80% solvent stirring, and then depending on the degree of wet and dry construction and specific parts of the request, and then slowly …
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20th Century 50–70 years, China’s steel plants mainly used aluminosilicate refractory materials, including clay, alumina brick and so on. Since the 1980s, China has successively developed the aluminum-magnesium carbon, coal quality calcium and magnesium and other several series of new steel package refractories. Wherein the aluminum-magnesium carbon refractory materials are of varieties, all specifications, is …
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