A cutting-free processing method for tundish continuous casting

Abstract

The invention discloses a cutting-free machining method for a tundish continuous casting remaining part, and belongs to the technical field of steelmaking continuous casting production. The purpose of the invention is achieved by the following scheme: when pouring stops in continuous casting, a partition is pressed in a tundish, the remaining part is divided into parts of which the sizes meet the condition that the parts can enter a furnace, after the remaining part is solidified, the tundish is turned, and the remaining part is broken from the position of the partition, and enters the furnace again after the remaining part becomes steel scrap which meet conditions. Compared with the traditional flame cutting method, the cutting-free machining method has the characteristics that the tundish remaining part does not require to be cooled down completely, environment pollution and energy waste cannot be caused, the method is simple, convenient and rapid, the generated tundish remaining part can be treated in time, the steel scrap can be reused in time, safety of post operation is improved, the steel scrap block degree is in a reasonable range, steelmaking cost is reduced, and the cutting-free machining method has an important guidance meaning for improvement of standard operation of continuous casting and economic indexes of a production technology.

Description

technical field [0001] The invention relates to the technical field of steelmaking and continuous casting production, in particular to a cutting-free processing method for tundish continuous casting casting residue. Background technique [0002] The remaining tundish is the amount of molten steel left in the tundish in order to ensure the quality of the slab at the end of pouring in the steelmaking and continuous casting process. Due to the large difference in steel types in daily production, there is also a large difference in the amount of excess tundish injection. Common steel types are generally controlled between 2-5kg / t, and special steel or stainless steel are generally produced according to short pouring times. The injection margin can be as high as 25kg / t, and it is usually processed by flame cutting and put into the furnace. However, the flame cutting processing method has the following defects: 1. The kerf in the flame cutting process is relatively large, general...

AI Technical Summary

Problems solved by technology

However, the flame cutting processing method has the following defects: 1. The kerf in the flame cutting process is relatively large, generally between 50mm-60mm for common steel types, and the kerf for special steel and stainless steel is even larger, resulting in metal loss, and the loss rate can be high. 2. The cutting process will produce a lot of smoke and dust. In order not to cause serious pollution to the environment, it is necessary to build supporting dust removal equipment and workshops to meet the national environmental protection requirements; 3. A large amount of energy consumption and direct production consumption during the cutting process , which will cause a further increase in cutting costs; 4. Most steel mills directly use oxygen for cutting. Oxygen is easy to leak or temper during the cutting process, causing severe burns to personnel and causing great harm to the personal safety of operators.

[0003] At present, with the increase of the country's environmental protection control, the cost of cutting is increasing day by day; the "people-oriented" development concept has raised the production method to protect the health of operators to a new height, so the development of waste-free cutting technology is in compliance with environmental protection control and Requirements of the development of the times, the technology is still blank