简介：淡水河谷公司投资20亿美元用于推进Voisey’sBay镍矿山向地下开采业务的转型。纽芬兰和拉布拉多州州长鲍尔表示，这一投资预计将为该矿增加至少15年的运营时间。该矿的地下开采扩建工作将于2018年夏天正式开始，预计建设周期为5年五年，建成后将为超过16，000人提供就业机会。

简介：将新一代Al-Li-S-4铝锂合金用砂纸打磨,用磷酸进行阳极化处理,用环氧320/322胶胶接,然后以12℃/min的速率升温至120℃,保温固化1h。采用BrukerD8Discover型X射线衍射仪测定胶接固化后的织构,并与未胶接的Al-Li-S-4合金进行比较。结果表明：胶接后合金主要织构的成分没有发生大的变化,但在胶接应力的作用下织构的位置发生变化。其中,黄铜织构与铜织构较稳定,而立方织构的取向密度变化较大,位置也有所改变。通过研究胶接对材料织构的影响,了解材料内部应力及晶粒取向上的变化,为胶接工艺的制定及改进提供参考。

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.

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简介：Forthegoalofsulfurrecovery,mostmethodsareaimedatthetailgaswithhigh-concentrationH2S,butfeweffectivemethodsareusedforlow-concentrationH2S.Inthiswork,Low-concentrationH2Scouldbepurifiedwellbyliquidphasecatalyticoxidation(LCO),andthesulfurresourcecouldalsoberecovered.TheabsorptionsolutionwaspreparedbyFeCl3andsulfosalicylicacid.Undertheexperimentalconditions,theconversionofH2StoScouldbemaintainedabove94%at60℃.InordertoenhancetheeconomicalefficiencyofLCOmethod,theabsorptionsolutionwasmodifiedbydopingCe,andaseriesofexperimentsweredesignedtoinvestigateitsperformance.TheresultsshowedthattheconversionofH2Shadnoobviousimprovement,butabove98%conversioncouldbegainedat60℃,andtheH2Sconversionratewasenhanced.TheoptimumadditionqualityofCe(NO3)3was0.08gto50mlFe3+solution.

简介：ＥｆｅｃｔｏｆＲａｒｅＥａｒｔｈｓｏｎＴｅｎｓｉｌｅＢｅｈａｖｉｏｒｏｆＨｏｔＲｏｌｅｒＳｔｅｌ６０ＣｒＭｎＭｏａｎｄＥｓｔｉｍａｔｉｏｎｏｆＲｏｌ′ｓＦａｔｉｇｕｅＬｉｆｅＹａｎｇＱｉｎｇｘｉａｎｇ（杨庆祥），ＺｈｕＧｕａｎｇｒｏｎｇ（朱广荣），...

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

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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。

简介：做Gd或做Lu的长晚霞红黄磷Y2O2S:Sm(3+)用高温度流动熔化方法被综合。获得的黄磷用X光检查衍射被分析决定晶体结构，并且阶段分析产品在单个阶段的表演。光系列和腐烂曲线在一个日立F-4500荧光分光光度计上被测量。腐烂时间在一个ST-900PM弱轻光度计上被决定。分析证明陆做的那位主人改进材料的光和腐烂时间。做的陆和Sm的集中被改变以便决定最佳的条件并且综合有最好的性质的产品。长晚霞的机制简短也被讨论。

简介：介绍了铜熔炼ＳＣＡＮ３０００ＮＴ／Ｓ９０００的系统构成以及为实现自然熔炼过程而作的画面、控制、报警等设计。

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：TheinfluenceofrareearthoxideCeO2onmicrostructureandwearresistanceofM80S20thermalsprayandthermalsprayweldingcoatingsisstudiedusingopticalmicroscope,scanningelectronmicroscope,X-rayenergydispersionspectroscope,X-raydiffractometerandweartestingmachine.Theresultsshowthattheaddi-tionof8%CeO2canimprovethemicrostructure,microhardnessandwearresistanceofcoatingssignificantly.

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：介绍了S7—300PLC和组态王在FZ15-100型翻车机上的应用、软件嫡程及为提高系统稳定性而采取的抗干扰措施。

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

简介：ThestructureandhydridingperformanceofLa0.6Nd0.4Ni4.8Mn0.2Cux(x=0～0.4)alloyswereinvestigatedinordertodevelopsuitablematerialsformetalhydrideairconditioner.TheeffectofCuadditiononthecrystalstructure,equilibriumpressure,hydrogencapacityandhysteresisaswellashydrogenabsorption/desorptionkineticsweresystematicallystudiedbyusingthemeasurementofP-Cisotherms,X-raydiffractionandscanningelectronmicroscopy.AstheamountofCuincreases,theplateaupressureincreasesandhydrogenabsorption/desorptionkineticsisimproved,buttheeffectivehydrogenstoragecapacitydecreases.Itisshownthatvariationsinthebasalplaneparameteracanbeusedasanindicationfortheplateaupressurechanges.Withtheincreaseofparametera,theplateaupressuredecreases.ForLa0.6Nd0.4Ni4.8Mn0.2Cux(x=0～0.4)alloysthereisarelationshipbetweentheeffectivehydrogenstoragecapacitiesandtheratiosoftheirunitcellparameterscanda.Theeffectivehydrogenstoragecapacitydecreaseswithincreaseofa/c.