sms meer 穿孔机介绍

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1、InnovationinseamlesstuberollingtechnologyCross-rollpiercingCross-rollpiercersinnewplantsandformodernisationmeasuresMillsizesProfitablemodernisationmeasuresCrossrollingmillsarebuiltbySMSMeerforpiercingSignificantbenefitsinqualityandcostsareachievedbilletsofdiameterappro

2、ximately100mmuptowhenoutdatedtechniquesarereplacedbythe450mm.Thecorrespondingrangeofrolldiametersmoderncross-rollpiercingtechnology.Justtwois720mmupto1,450mm.Thelargestcone-typeexamples:piercertodatewasbuiltwithDiescherdiscsforanMPMline.Theconsequentautomationoftheplan

3、tModernisationofanMPMmandrelmillplantshowsthatevensmallbatcheswithfrequentsizeIn1999tworollingmills,apress-piercingmillandchangescanbemanufacturedcost-effectivelyandanelongator,werereplacedbyamoderncross-rollwithahighproductquality.piercerwithDiescherdiscsinanMPMmandre

4、lmilllineintheUSA.Asaresult,thetolerancesofthetubesproducedwereimprovedsignificantlyandthesurfaceflawstypicalofthepress-piercingprocesswereeliminated.Apartfromtheimprovementsinquality,reducedtool,energyandpersonnelcostshaveconfirmedthesuccessoftheinvestment.Upgradingof

5、apush-benchplanttoaCPEplantIn1998,thefourthconventionalpush-benchplantwasconvertedintoamodernCPEplantbyreplac-ingthepiercingpresswithamoderncross-rollpier-cer.Theresultsare:•Increaseinthebilletweightfrom500kgto635kgBarrel-typepiercerinaCPEplant•Increaseintheshelllength

6、from17mto22mwithconsequentlyincreasedlengthofthefinishedtubes•Reductioninthecropendlosses•Improvementinthewallthicknesstolerances•Eliminationofthreeformingstepsincludingtoolandmaintenancecosts•CostreductionsthroughreducedpersonnelrequirementsTheincreasesinbilletweighta

7、ndshelllengthtogetherwiththereducedcropendlossesduetocrimpinghaveresultedinasignificantimprovementintheyieldoftheplant.Thankstothismodernisa-tionmeasure,themillownerhasconsiderablystrengthenedhiscompetitiveposition.Cone-typepiercer,run-outsidewith3-rollerguidesNewtechn

8、ologyforseamlesstubeproductionNewplantconceptsThehigherperformanceofthecross-rollpiercerwithrespecttoelongationanddia