Investigation of the influence of the roll surface on the cast strip at the casting using a vertical type high speed twin roll caster
A vertical type high speed twin roll caster can be cast an aluminum alloy strip directly from a melt at high casting speed.However defects of the cast strip occurred at faster roll speed,which includes small cracks on the cast strip and unsoundness thickness distribution.They are related to contact condition of roll surface and melt.In the present study,a grooved roll was used to eliminate the defects and adopted in terms of the cost saving.We experimented using several grooved rolls with different patterns.When the groove width was 0.45mm; depth 0.2mm; pitch 0.lmm and 1.0mm,stable casting was possible.The shape of bulge was formed on the cast strip surface by the grooved roll.As a result of color check,we found that the grooved roll eliminate the small cracks.We stopped the rotated roll during the casting to observe the contact condition between the melt and the roll,and confirmed how the bulge was formed.The as-cast strip with the bulge was able to cold rolling.
Twin roll caster Twin roll casting Grooved roll Roll surface
T.Yamashiki T.Haga S.Kumai H.Watari
Graduate School of Osaka Institute of technology 5-16-1Omiya Asahiku Osaka 535-8585 Japan Department of Mechanical Engineering, Osaka Institute of Technology 5-16-1Omiya Asahiku Osaka 535-85 Department of Materials Science and Engineering, Tokyo Institute of Technology 4259 Nagatsuda Midori Department of Production Science and Technology, Gunma University 1-5-1 Tenjin kiryu city 376-8515 J
国际会议
香港
英文
271-276
2012-07-27（万方平台首次上网日期，不代表论文的发表时间）