简介：通过对耐候钢S450HW的化学成分设计、热塑性及CCT曲线试验,制定合理轧制工艺,从而得到成型性能优良耐腐蚀性能优异的耐候钢。

简介：Overthepast10years,China'ssteelindustryhasmadeasubstantialdevelopmentintermsofscale,andhasfinallybecomeasteelgiantintheworld.Intheupcoming10years,fundamentalchangeswillbemadewiththeeconomicgrowthinChina.Againstthisbackground,China'ssteelindustrywillshiftfromarapiddevelopmenttoaslowbutsounddevelopment.InordertofulfillthesecondleapofChina'ssteelindustry,basedonitscurrentdevelopingstatusandcharacteristics,andfromtheperspectiveofbothnationalandcorporatedevelopment,mergersandacquisitionarebotheffectivewaystoraisethequalityoftheexistingstockofassetinthesteelindustry,whiletechnologicalinnovationisthesolidfoundationforitssecondleap.

简介：湖南华菱涟源钢铁有限公司承担的湖南省100个重大产品创新项目'1100MPa(兆帕)级起重泵送用超高强度钢的关键技术开发及应用'取得阶段性成果。项目成功开发960~1300MPa超高强度调质钢板,并在国内前三大工程机械企业批量使用,涟钢在国内薄规格超高强工程机械钢市场份额达到40%以上,省内市场独家垄断.

简介：8月28日，由中国能建江苏省电力建设第一工程有限公司承建的国电宁夏方家庄电厂2×100万千瓦超超临界间接空冷燃煤机组工程开始浇筑第一方混凝土，标志着该工程正式开工建设。

简介：Loadingdistributionforheavyplatemillistofindoptimalcontrolsolutionsunderthegrantedperformanceindicatorsandconstraintsincludingmillcapacityandhypothesisofrollingmodels.Thesolutionsarequitedifferentfordifferentperformanceindicators.Inthearticle,theperformanceindicatorsandsequentialquadraticprogramming(SQPforshortbelow)methodsemployedin5000mmheavyplatemillofBaoSteelarepenetratinglyanalyzed.Generally,theSQPmethodisaneffectiveandfastwaytosolvethenonlinearprogrammingproblemswithsmallormediumscaleconstraints.Earlyin1976,HanputforwardtheSQPmethodforthefirsttimeandPowellmadeitperfectandaccomplishedthealgorithmin1977.Infact,SQPmethodwastoturnanonlinearprogrammingproblemtoaseriesofsubsetofquadraticprogrammingproblems.Inthealgorithm,eachiterationstepistosolveonequadraticprogrammingproblem.Theoptimalsolutionswillbegraduallyapproachedafterquadraticprogrammingproblemsweretotallysolved.Whensolvingthequadraticprogrammingproblem,theactivesetstrategywereemployedwhichturnedtheconstrainedquadraticprogrammingproblemtounconstrainedquadraticprogrammingproblem.Theactivesetstrategymadethewholequadraticprogrammingproblembesolvedbyaleastsquareproblem.Andfinally,thematrixoftheleastsquareproblemwouldbedecomposedbyQmatrixandRmatrix.AfterQmatrixandRmatrixwereobtained,theoptimalsolutionswouldbefinallyfound.Forloadingdistribution,theperformanceindicatorswerecomposedbyplateshapeanddraftofeachpass.Plateshapeisrepresentedbyrollingforcegraduallyreducedpassbypasswithatunablefactor.Themillcapacityisanotherperformanceindicatorrepresentedbydraftofeachpass.Forheavyplatemill,themillcapacityhereisthemotormoment.Forheavydraft,themotorwouldbeoverloadedespeciallyforthefirstseveralpasses;forsmalldraft,themotorwouldbeloadedslightly.Allthesewouldnotbepermittedtohappenwhen

简介：Baosteel's5mheavyplateplantwassuccessfullytestedonMarch1,2005.Sincethen,theHeavyPlatePlantofBaosteel(hereinafterreferredtoas'theplant')hasbeenencouragingitsemployeestostudyandtracetheadvancedheavyplatetechnologies,tryingtofindouttherulesofheavyplateproductionanditsqualitycontrol.TheplanthasgraduallymasteredthismodernheavyplateplantandensuredthatBaosteel'sproductionofheavyplatesgrewyearbyyear,with1.41Mtproductputinstoragein2007.Theplanthasfocusedondevelopingnewtechnologiesandproducts,meanwhileenhancingitscapacity.Ithasproducedaseriesofplateproducts,whichcanbeusedinmanufacturingshiphulls,pipelines,bridges,buildings,boilersandpressurevessels.

简介：本文结合酒钢炼轧厂2~#转炉倾动系统的设备现状,对变频器改造的设备选型、控制原理和要求进行了论述,对改造后的调试参数和实现功能进行了探讨,在现场的实际应用中取得了良好的效果。

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简介：通过分析高碳微合金非调质钢C70S6中合金元素的作用,设计了C70S6钢的生产工艺。经过生产试制及对组织、析出相和夹杂物的检测,分析了冶炼过程中存在的问题,提出了工艺优化的意见,明确了提高钢中氮元素含量及控制好轧制温度、轧后冷却速度,有利于得到大量细小弥散的析出相和促进强度的提高。

简介：简要介绍4#、5#高炉探尺结构及工艺要求,具体阐述S120变频装置在高炉探尺系统中的实际应用及故障处理情况。

简介：据3月18日消息，内蒙古上泰实业有限公司年产100万吨不锈钢项目总投资48亿元，已完成投资19亿元。目前公司两台镍铁矿热炉基础工程结束，厂房钢结构和精炼炉的四个承台基础都己完工，8000平米的附属车间已投入使用，内部设备进入调试阶段。项目全部达产后，可实现年产镍铁60万吨，不锈钢100万吨，年产值150亿元，利税15亿元，解决就业2000人。

简介：Baosteel'sNo.8airseparationunit(ASU)isthefirstdomestically-integrated60000m3/hASU.Thispaperdescribesthemechanicalequipment,thedesignandtheconfigurationcharacteristicsofthisunit.ThepotentialfailuremodesofthemechanicaldevicesarededucedviaanalysesonthefailurehistoryofsimilardevicesinotherASUs.Finally,thispaperalsobringsupsuggestionsondailymaintenance,overhaulandpurchasesofspareparts.