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| Design and practice on segment revamping for 1450 mm slab caster |
| LU Xiao-wu |
| （Baosteel Engineering and Technology Group Co.， Ltd.， Shanghai 201900， China） |
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Abstract In order to extend the service life of a 1 450 mm slab caster in a steel plant， and to improve the production stability and the operation efficiency of the caster， and to promote the product quality， the segments of the caster were redesigned. By analyzing the technical characteristics of the segments and the existing problems before revamping， the structural design and parts selection of the segments were optimized. The selection and arrangement of the nozzles were optimized by spray test. The strength and rigidity of the segments were verified by finite element calculation. The practice results show that the segments have good structure design and parts selection， and meet the requirements of strength and rigidity request， and are conducive to the production and maintenance. The cooling of bow segments is controlled by the technology of nozzle scope cutting controlled by valves. The nozzles have wide adjusting range of spraying water and the slab cooling is evenly. This is conducive to improve the quality of slab surface. The single line intelligent centralized lubrication system makes low dry oil consuming and little probability of bearing failure， and have good cost saving. After revamping， the segments are stable and reliable， and have high operation efficiency and less downtime. The revamped segments are easy to disassemble， install and maintain.
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Received: 08 August 2018
Published: 29 January 2019
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2018, Vol. 37 
