Do You Know These Key Parameters of the Continuous Casting Machine?
As an efficient billet casting equipment, the continuous casting machine is almost the standard configuration of every steelmaking enterprise. Whether it is long-process steelmaking or short-process steelmaking, continuous casting machines play an irreplaceable role. So, what parameters are important in the process of continuous casting? Let’s find out together today.
Liquid Steel Calming Time
The waiting time for the molten steel between the ladle leaving the refining position and the casting platform is the cooling time of the molten steel. During the production process, the sedation time range suitable for the actual situation should be determined according to factors such as the length of the ladle running route and the heat dissipation of the ladle.
Continuous Casting Platform Molten Steel Temperature
After the ladle reaches the pouring platform, the temperature measured 5 minutes before casting is the temperature of the molten steel on the continuous casting platform. Measuring the molten steel temperature on the continuous casting platform is beneficial to keep the molten steel casting stable within a small temperature range. During production, the appropriate control range of molten steel temperature should be determined according to the type of steel to be poured, the capacity of the ladle and tundish, the cross-section of the continuous casting slab, and the casting speed.
Liquid Steel Supply Interval
The molten steel supply interval can be expressed by the time interval between the closing of the nozzle of the previous ladle and the opening of the nozzle of the next ladle, or the time interval between the arrivals of the two ladles of molten steel on the continuous casting platform. It is related to factors such as smelting, refining cycle, and casting speed of the continuous casting machine. It is best to control the interval time within 5 minutes to facilitate the stability of the pulling speed.
Average Tundish Age of Continuous Casting Machine
The average package age of the tundish is the service life of the tundish. It refers to the ratio of the number of molten steel furnaces poured by the continuous casting machine to the number of tundishes used in a certain period of time and can be statistically calculated on the basis of months, quarters, and years. In production, the longest lifespan for safe use of the tundish, that is, the maximum time allowed for pouring of the tundish, should be determined according to the properties, quality, tundish capacity, and poured steel type of the lining refractory material. Generally, in normal production, the specified number of uses cannot be exceeded at will.
The Service Life of Continuous Casting Machine Crystallizer
The crystallizer is the core component of the continuous casting machine. Its quality directly determines the quality of the billet. The service life of the crystallizer refers to the working time of the crystallizer from the beginning of use to the time of replacement, that is, the time for the crystallizer to maintain the original design parameters. The service life of the continuous casting machine mold can be expressed by the number of furnaces or the total amount of molten steel poured during this period. The main reason for replacing the crystallizer is that the mold is worn and deformed during the continuous casting process, thus changing the original design parameters and affecting the quality of the slab.
The appearance of the continuous casting machine has fundamentally changed the one-out rolling process of steel ingots that have dominated for a century. Because it simplifies the production process, improves production efficiency and metal yield, saves energy consumption, greatly reduces the production cost, and has the advantages of good billet quality and other advantages, it has been developed rapidly.