Abstract
To verify the stiffness, the natural vibration and the reliability of the continuous casting machine in the configuration of dynamic soft reduction. Firstly, the three-dimensional model of the segment frame was established and the finite element simulation of the structure was carried out. Then, the deviation of the roll gap in the working process of the caster was measured by analog loading test. The results show that the stiffness of the segment frame of the continuous casting machine meets the requirements. Using dynamic soft reduction can improve the centerline segregation of casting slab in the process of continuous casting, which is of important practical significance in the production practice.
Highlights
Since the 70s of the 20th century, with the improvement of the quality requirements of the steel slabs of various countries, the center segregation of the slab has become the critical attention of all countries
The results show that the stiffness of the segment frame of the continuous casting machine meets the requirements
In order to minimize centerline segregation and improve the microstructural homogeneity of the strand in subsequent rolling, technologies such as electromagnetic stirring [4,5], thermal soft reduction [6,7,8,9], dynamic soft reduction [10,11,12,13,14,15,16,17] and mechanical forging [18] have been applied in the continuous casting of steel
Summary
Since the 70s of the 20th century, with the improvement of the quality requirements of the steel slabs of various countries, the center segregation of the slab has become the critical attention of all countries. In order to solve the slab segregation problem, dynamic soft reduction technology is widely used in continuous casting production process [1,2,3]. The segregation of high-strength steel series in the CCC pilot production center is prominent due to the inability to meet the requirements of stable and continuous production process quality because the continuous casting machine segments do not have the functions of remote adjustment of roll gap and un-configured dynamic soft reduction [1,2]. Hydraulic jacks were used to simulate the pressure load of the slab casting during continuous casting process to detect the actual segment stiffness of the frame characteristics
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