简介:本文叙述了用VC++6.0及Access2000共同开发的铁水计量程序,VC设计主程序界面,使用ADO技术访问并操作数据库,实现数据的随机存取。
简介:Separationisacommonlyobservedphenomenonduringdropweightteartestinginhigh-toughnesslinepipesteels.Severeseparationisharmfulbecauseitmaycausefracturingorburstingofpipes.Inthisstudy,aquantitativemeasurementofseparationwasproposed,andusingthisnewmethod,arelationshipbetweentheseparationandmicrostructurewasdeterminedanddiscussed.Themicrostructuresobservedusingopticalandscanningelectronmicroscopyrevealedthattheseparationwasrelatedtothemixedferriticandbainiticmicrostructures,orrather,itwasrelatedtothecarbonenrichmentinbainite.
简介:BaoshanIron&SteelCo.,Ltd.,(referredtoasBaosteel)inChinafirstsucceededindevelopingtheU-ing-O-ing-Expanding(UOE)longitudinalsubmergedarcweldedpipes(SAWLs)offshorelinepipeofamaximumthickness/outsidediameter(T/D)0.042in2011.DescribedinthispaperistheresearchanddevelopmentoftheX70UOESAWLpipesbythecompany.TheresultshowsthatthesaidX70linepipehasbeenincompliancewithrelevantrequirementsasspecifiedinSpecificationsDNV-OS-F101,andhasbeensuccessfullyusedintheSouthChinaSeadeepwatergaspipelineproject.