简介：Inthispaper,abriefintroductiononclad-rollingheavysteelplatesof90mmand140mmthickispresented.Thesteelplateswerehotrolledby265mmslabsthatarecladdedbydouble135mmcontinuouscastingslabsofQ235steel.Afterhotrolling,interfaceofthecladdingslabscompletelydisappeared,revealinguniformgrainssimilartotherestofthematerials.Ultrasonictestswerecarriedoutonbothsteelplates,demonstratingexcellentresults.Throughthicknesstensiletestswerealsoimplementedonbothsteelplates,resultinginperfectmechanicalpropertiescomplyingwithspecificstandards.Theresultprovesthataminimumreductionrateof1.89isavailableinproducing140mmthicksteelplatewithexcellentthroughthicknessproperties.
简介：CausesforcentralshrinkpipeofGCr15bloomswereanalyzed.Countermeasurestotacklewithsuchdefectwerepracticed,includingsuitablesecondarycooling,softreductionandcastingspeed,aswellasstrictsuperheatcontrol.Theresultsshowthatthequalityofbloomcastingsissignificantlyimproved.
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