Development of simulating tester for evaluation of build-up characterizing in CAL hearth rolls
Most of the metallurgy facilities service under the severe circumstances of high temperature,high loading and high abrasion,etc.Hearth rolls,as the key parts of the Continuous Annealing Line (CAL),can be actively reacted with the oxide on the surface of the fast moving band steels or with the residual iron particles on the surface of the band steels at high temperature and under reducing atmosphere,which can grow up when the band steels slide on the surfaces of the hearth rolls and will result in build-up occurring on the surface of the rolls and dents appearing on the surface of band steels,that will affect the quality of band steels.Many practices of domestic and oversea well-known iron & steel companies indicate that applying a specially designed thermal sprayed coating on the surface of the hearth rolls can obviously reduce build-up on the surface of hearth rolls,prolong their service life and also greatly improve the surface quality of band as well as reduce the cost of production.This paper presents the developed simulating tester for characterization of the build-up for hearth rolls.It can be used in laboratory for simulating the state of the hearth rolls in different sections of the CAL,further researching the mechanism of build-up,designing and optimizing the coating buildup resistance at CAL lines.It can also be used for rapid developing of coating materials,predicting the service life of hearth rolls and reducing the cost and the risk of in-situ testing in product line.
coatings for hearth rolls build-up resistance thermal spray continuous annealing line (CAL)
Huang Xiaoou Zhang Tianjian Cheng Jialong Li Yiming Bi Gang Zhang Yuegang Tan Xinghai
Surface Engsineering Research Institute of CAAMS ,Beijing,China Surface Engineering Research Institute of CAAMS ,Beijing,China Shanghai Baosteel Equipment Maintenance Co.,Ltd,Shanghai,China
国际会议
上海
英文
1097-1103
2008-09-26（万方平台首次上网日期，不代表论文的发表时间）