High Performances of Ultra Fast Cooling Technology
Improvement of cooling technology is required for the production of advanced high strength steels.The use of high cooling rates allows relatively low levels of expensive alloying additions to ensure suitable mechanical properties.In classical annealing and hot-dip galvanizing lines a mixing station is used to provide an atmosphere gas composed of a mixture of 3-5% hydrogen,the balance nitrogen,in the various sections of the furnace including the rapid cooling section.Drever International developed a patented improvement of cooling technology based on the following features: pure hydrogen gas is injected only in the rapid cooling section whereas the different sections of the furnace are supplied with pure nitrogen gas; the control of flows through atmosphere gas management allows to get high hydrogen concentration in cooling section and low hydrogen content in the other furnace zones.This cooling technology development insures higher cooling rates without additional expensive hydrogen gas consumption and without the use of complex sealing equipments between zones.In addition reduction in electrical energy consumption is obtained.Extensive validation of theoretical research has been conducted on industrial lines.New lines as well as existing lines,with limited modifications,can be equipped with this new development.Up to now this technology has successfully been implemented on 6 existing and 9 new lines in Europe and Asia.Drever International obtained high advances in rapid cooling performances,through detailed design improvements of multi-jets cooling equipments.These activities ensure Drever International to develop optimized technology,the Ultra Fast Cooling (UFC) System: this technology provides high cooling performances and control of strip vibrations.The best cooling performances are obtained with the Ultra Fast Cooling System combined with the atmosphere gas management with high hydrogen presented above.High strip cooling performances obtained on the new lines built for Shougang ShunYi in China are presented.
fast cooling heat transfer furnace atmosphere gas management hydrogen
RENARD Michel DOSOGNE Edgar CRUTZEN Jean-Pierre RAICK Jean-Marc MA jia ji LV jun MA bing zhi
DREVER INTERNATIONAL S.A.,Liege Science Park,15 allée des Noisetiers,B-4031 Angleur(Liège),Belgium SHOUGANG Cold Rolling Mill headquarter,Beijing,ShunYi District 101304,P.R.China
国际会议
Asia Steel International conference 2012(第五届亚洲钢铁大会)
北京
英文
1-7
2012-09-23（万方平台首次上网日期，不代表论文的发表时间）