A test device for simulating solidification of continuous casting slab and its application method

Abstract

The invention discloses a test device for simulating continuous casting billet solidification and a method using same. The test device comprises a foundation bed, wherein an induction heating furnace is arranged on the foundation bed; an opening is formed in the bottom of the induction heating furnace; a piston is arranged in the opening; a rack guide rod, a first lifting table and a second lifting table are arranged on the upper part and the lower part of the rack guide rod respectively; a first motor, a supporting table and a vibrating motor are arranged on the first lifting table; a second motor and a worm are arranged on the supporting table; a billet pushing refractory brick is arranged at the bottom end of the worm; the vibrating motor is connected with a crystallizer by a connecting rod; a cavity is arranged in the middle of the crystallizer; cooling water flows into the crystallizer and flows out of the crystallizer; a third motor and a screw are arranged on the second lifting table; one end of the screw is connected with the second lifting table; the other end of the screw is connected with a piston; and a water spray device is used for cooling formed casting billet. According to the test device and the test method disclosed by the invention, a continuous casting billet solidification process in practical production is stimulated to obtain the casting billet; and practical production is guided by carrying out research and analysis on the quality and the microstructure of the casting billet.

Description

technical field [0001] The invention relates to the application field of iron and steel continuous casting simulation test technology, in particular to a test device for simulating solidification of continuous casting slabs and a use method thereof. Background technique [0002] With the advancement of science and technology and the improvement of process conditions, my country's steel production has leapt to the leading position in the world. However, modern enterprises have higher and higher requirements for the performance of metal materials, and the manufacturing level of high-performance steel still needs to be improved. As a revolutionary technology in the steel industry, continuous casting has become an indispensable process for steelmaking. The occurrence of defects in the continuous casting process, including surface cracks, subcutaneous cracks, vibration marks, uneven quality, etc., will seriously affect the quality of steel and reduce the efficiency of enterprises...

AI Technical Summary

Problems solved by technology

[0004] To improve the quality of steel, it is necessary to improve the process conditions, control the solidification process of the metal in the continuous casting process, and obtain a refined grain structure. However, the high temperature and complex process factors of continuous casting make it very difficult to observe and study its solidification structure. The research on the billet quality is mainly through the analysis of the sample of the billet collected from the steel mill. Due to the continuity of actual production, there are certain limitations in the adjustment of the process parameters in the process of sample preparation, and the trial production process will It consumes a lot of manpower and material resources, and the unqualified steel structure will lead to a large amount of steel being scrapped. In order to improve the quality of steel and reduce the loss of trial production, simulation technology must be used

With the rapid development of computer technology today, computer simulation of the solidification process of continuous casting slabs has been realized, but the verification of the simulation results still requires sampling from steel mills, and the process is cumbersome

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