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1、飞剪操作（Flyingshearoperation）2.FlyingshearThebadconsequencesofthebillettongueandfishtail:1)thetemperatureofthetongueshapeandthefishtailsectionislowerthanthatofthestrip,andtherollingsystemofthefinishingmilloftencausestherollertoproducetheindentation,causingth
2、esurfaceofthestriptoproducerollerdefects,affectingthequalityofstripsteel.2)tongueandtailrolledpiece,rollinginthefinishingmillgroup,easygeneration,therolledpiecewanderinginaspin,transportingandwindingprocess,theseamdrillingequipmentparts,cardsteelcausedbya
3、ccident,maketheequipmentdamageorparking,influencingonworkingfactorofrollingmill.3)ithasthesteelofthetail,thebindingisdifficult,andthestrappingisnottight.Itiseasytocausethelooseroll,whichcancausethefailureduringthetransportationandpilingofthesteelcoil,whic
4、hcanendangerthesafetyofthepersonandequipment.Inordertopreventtheoccurrenceoftheabovephenomenon,thetongueshapeandthetailofthestripshouldberemovedbeforeenteringthefinishingmillgroup.Theshearingorderofdifferenttypesofshearisdescribedindetailbelow.Headcut:fly
5、ingshearacceleratesfromwaitingposition.Thetailcuttingedgeiscutinfrontoftheslab,thencutthecuttingedgeofthehead.Afterthesheariscompleted,thespeedoftheflyshearandthespeedofthestriparesynchronizeduntiltheflyshearopenstoallowthebillettopassthrough.Theflyingshe
6、arratedropsslowlyandentersthewaitingposition.Tailshear:flyingshearacceleratesfromwaitingposition.Tailshearisperformedinthetailsection.Afterthesheariscompleted,thespeedoftheflyshearandthespeedofthestriparesynchronizeduntiltheflyshearopenstoallowthebilletto
7、passthrough.Thenthecuttingspeeddropsslowlyandgoestothewaitingposition.Flyshearcontroltoensurethatthetailcuttingisnotlongerthanthemaximumshearlength.Sectionshear:singleshearisnotpossible.Theshearingcanonlybethetailcutandthenthedoubleshearoftheheadshear.Sec
8、tionshearingcanonlybecarriedoutbyflyingshearcontrolsystematthemaximumspeed.Flyingshearbeginstoacceleratefromthewaitingposition.Thefirstcutisperformedbythetailcuttingedge.Afterthesheariscompleted,itisnotuntiltheflysh
