Heat transfer during cooling of hot surfaces by water nozzles

Metalurgija

关键词: heat transfer coefficient;    cooling of surface;    nozzle;    continuous casting of steel;   

DOI  :  

来源: DOAJ

【 摘 要 】

Method of cooling in a secondary zone of continuous casting of steel has a significant influence on a quality of continuously cast products mainly from the point of view of internal and surface defects as well as zonal segregations. At the department of thermal engineering, a physical model of the secondary zone has been developed, which enables testing of both water and water-air nozzles. During laboratory measurements cooling effects of a cone nozzle have been expressed by means of three parameters. Most commonly used parameter is an admission characteristic, infrequently heat transfer coefficient is determined and newly a measuring of dynamic impact of the cooling water has been introduced.

【 授权许可】

Unknown