Steelmaking process

Abstract

The invention relates to the technical field of steelmaking processes, in particular to a steelmaking process. The stealmaking process comprises the steps of filling, smelting and hardening and tempering. In the filling process, quantitative raw materials are selected according to the demanded quantity of steelmaking, the raw materials are mixed under the room temperature condition, hole-removed raw materials are reserved, and a carburant is added. The steelmaking process has the beneficial effects that a support and a porous ball are arranged in a hardening and tempering furnace, and a riser head is communicated with the porous ball, so that the rapid and convenient filling process is achieved; meanwhile, in the process that a hydraulic cylinder drives the support, hardening and tempering materials on the inner wall of the porous ball are fully mixed and reacted with molten steel, so that the hardening and tempering effect is improved, and the steel quality is better; through the arrangement of a first sliding groove, the front-back movement stirring function of the cooperation of the porous ball and the support is achieved; and the up-down movement of the porous ball is achieved through a second sliding groove, then the purposes of exhausting, feeding and inflating are achieved through the positions of the porous ball and the liquid level of the molten steel in the hardening and tempering furnace, and the steelmaking tempering process is conducted smoothly.

Description

technical field [0001] The invention relates to the technical field of steelmaking technology, in particular to a steelmaking technology. Background technique [0002] During the steelmaking process, the gas or moisture in the air enters the molten steel due to smelting, resulting in more impurities after the steel is formed, or more pores in the inner cavity, which reduces the quality of the steel and cannot meet the use requirements. [0003] In the existing process, it is necessary to add various quenched and tempered materials to adjust the steelmaking process, so as to improve the quality of the steel. In the process of adding quenched and tempered materials such as silicon-manganese-aluminum pig iron, due to the high density of the molten steel, the temperature is high , which makes it difficult to achieve the purpose of stirring, and then makes the quenched and tempered substance unable to fully mix with the molten steel, which leads to difficulty in feeding; at the s...

AI Technical Summary

Problems solved by technology

[0002] During the steelmaking process, due to smelting, the gas or moisture in the air enters the molten steel, resulting in more impurities after the steel is formed, or more pores in the inner cavity, which reduces the quality of the steel and cannot meet the requirements for use.

[0003] In the existing process, it is necessary to add various quenched and tempered materials to adjust the steelmaking process, so as to improve the quality of the steel. In the process of adding quenched and tempered materials such as silicon-manganese-aluminum pig iron, due to the high density of the molten steel, the temperature is high , which makes it difficult to achieve the purpose of stirring, and then makes the quenched and tempered substance unable to fully mix with the molten steel, which leads to difficulty in feeding; at the same time, due to the large amount of gas generated during the quenching and tempering process, the pressure change in the tempering furnace is relatively large. large, which in turn affects the effect of tempering and the safety of production

[0004] To this end, a steelmaking process is provided to solve the problem of quenching and tempering stirring and the problem of gas discharge in the steelmaking process

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