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 …
Selection of refractory material for VOD ladle lining Read More »
With the reform and improvement of continuous casting technology and functional refractories, the most commonly used in our country is the zirconium sizing nozzle. According to the content of zirconia in the sizing nozzle, the zirconium sizing nozzle can be divided into ordinary type sizing water and zirconia type sizing water are two categories, ordinary …
Ferroalloy electric furnace furnaces, especially cold stamped paste villages, when the knotting quality does not meet the required requirements, and the oven lining time and heating rate are not closely controlled during baking, the baking quality of the furnace village will not be achieved. To normal production requirements. According to the reasons for the damage …
Main measures to prolong the life of ferroalloy furnace lining Read More »
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 …
The three main causes of damage at the long nozzle Read More »
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 …
How to choose ramming mass and adjust the composition Read More »
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 …
6 effective measures to reduce cracks of ladle slide gate plate Read More »
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 …
What are the technical indicators to measure the performance of refractories? Read More »
Sliding plate is the core component of ladle sliding spout, which is the component that directly controls steel pouring and determines the function of sliding spout. If the sliding plate leaks steel in the process of steel pouring, it will cause the continuous casting to break pouring, or cause the vicious accident of burning out …
How to prevent steel leakage between ladle slide gate? Read More »
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 …
How to classify refractory materials as acid, alkali and neutral? Read More »
There are mainly two types of Induction Furnace. They are channel Induction Furnace, and coreless Induction Furnace. Advantages of Using An Induction Melting Furnace Disadvantages of traditional sintering method: How does the Induction Furnace work? An induction furnace is an electrical device used to heat metal or other conductive materials. An induction furnace consists of …
Improvement of Sintering Method for Induction Furnace Read More »
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 …
Construction method of refractory casting material Read More »
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 …
Development of ladle lining refractory materials Read More »
Ladle shroud, also named as long nozzle, as a refractory product it is used as a connection nozzle between Ladle and Tundish. In order to keep the molten liquid from being oxidized and splattered when it flows from ladle to tundish, a shroud is needed to be installed underneath the ladle. One side is connected …
