1.What is the role of continuous casting slag? During the pouring process, powdered or granular slag is continuously added to the surface of the molten steel in the crystallizer, which is called protective slag. The functions of protective slag are as follows: (1) Insulation and heat preservation to prevent heat dissipation; (2) Isolation of air …
Function and influencing factors of continuous casting mold powder Read More »
Heating furnace is a thermal equipment used to heat steel billets or small ingots during steel rolling or forging, and its operating temperature is generally 1300~1400℃. With the large-scale and high-efficiency of rolling mills, higher requirements are put forward for heating furnaces. Its development trend is large-scale, low-consumption, pollution-free and automated operation, and the furnace …
Types of refractory materials used in various parts of reheating furnaces Read More »
In the field of refractory materials, magnesia carbon bricks are widely used in high-temperature industrial environments such as steel smelting and glass manufacturing due to their excellent high temperature resistance, slag erosion resistance and thermal shock resistance. As one of the important additives of magnesia carbon bricks, the selection and application of metal silicon powder …
Selection of Metal Silicon Powder for Magnesia Carbon Bricks Read More »
1. Broken to pieces Crushing is the process of processing bulk materials into ideal particle size materials. It is an indispensable process in the production of refractory materials. Although it is simple, it is very important. It has an important impact on the stability of product quality. At the same time, the crushing equipment consumes …
The process flow of magnesia carbon brick production Read More »
Although carbon-containing refractory materials have significant resistance to molten steel erosion, slag resistance, good thermal shock resistance and high temperature flexural strength, the oxidation problem of carbon limits its service life, and the magnesia carbon bricks are damaged during use. Mainly due to the oxidation of carbon by iron oxides in the slag and the …
When the electric furnace taps steel, the furnace body tilts to a certain angle (usually 45°) in the tapping direction. The molten steel flows through the tapping trough and enters the ladle. In addition to guiding the molten steel, the tapping trough also prevents the molten steel from scattering. , protect molten steel and reduce …
Detailed explanation of 7 types of refractory materials for trough tapping structures Read More »
The reasons for steel leakage between ladle slide plates are manifold, and poor control of sliding spout machinery, slide plate installation operation, slide plate quality, ladle steel pouring operation, steel smelting and other aspects may lead to steel leakage between slide plates. For different reasons to develop appropriate preventive measures, can reduce the chances of …
Preventive measures for steel leakage accidents between ladle slide gate Read More »
Waste refractory materials can be used as secondary raw materials after simple picking, crushing and other initial processing. Generally to a small amount added to the production process of higher quality products, or add a higher proportion to the metallurgical auxiliary materials and other low value-added products. The economic and social benefits generated by the …
Four recycling technologies to give new life to used magnesium carbon bricks Read More »
Nowadays, there are more and more companies and businesses selling furnace lining materials, and the prices are also varies. How to identify the quality of furnace lining materials and how to select furnace lining materials have become problems faced by foundry companies. They are usually tested and used, but this virtually increases the cost and …
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 …
How to solve the sliding gate plate leakage of steel Read More »
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 …
The process of magnesium carbon brick production Read More »
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 …
The reasons of refractory brick collapse in using process Read More »
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 »
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 …
