简介：贵冶二期、三期工程使用了大量的可编程序控制器,本文从设计的角度阐述了可编程序控制器的使用.

简介：该程序包于1989年12月经中国有色金属工业总公司鉴定通过。程序包由选矿流程计算主程序、数质量流程图绘制主程序、高级[3ASICA语言与AutoCAD联接主程序等三部分组成。每个主程序又包括许多子程序,如选矿流程计算主程序有:磨矿流程计

简介：本文介绍了ＺＭＪ－１型锤磨机的结构特征，工作原理，并对该机国产化的改进和研制情况及其样机的工业试验情况作了简要叙述。

简介：在Mn3O4生产中用欧姆龙C200H可编程序控制器控制生产工艺和设备，降低消耗，提高生产效率和产品质量

简介：EffectofLa-richrareearthoneutecticmicrostructureinA1-2%Fealloywasstudied.WhentheadditionofREissmall,a-A1phaseisintheformofcellulardendrite.WiththeincreaseoftheadditionofRE,thenucleationandgrowthofa-A1dendritearesuppressed,andeutecticAl3Fephaseisrefined.WhentheadditionofREgetsto0.6%(massfrac-tion),thesizeofeutecticAl3Feincreases.Inaddi-tion,mechanismoftheeffectofmixedREoneutecticmorphologyofA1-2%Fealloyisexplored.

简介：EffectofMnsubstitutionforFeincubicLavesZr0.1Tb0.9(Fe1-xMnx)2andY0.1Tb0.9(Fe1-xMnx)2com-poundsispresented.Similarresultsinbothsystemsareobtained:ThestructureandthemagnetismofTbFe2arebothinfluencedslightlybyasmallamountofYorZrsubstitutionforTb;Withincreasingxvalue,thelatticeconstantincreasesmonotonously;theCurietemperaturedecreaseslinearly;whilesaturationmagnetizationincreaseslinearly.ForthesmallamountofMnsubstitutionforFeinbothsystems,magnetostrictionissignificantlylargerthanthatinthepureironalloys.Thelargestmagnetostrictionof|γ‖-|γ|=2200×10-6atmagneticfieldof2×107/4πA/misobtainedforY0.1Tb0.9(Fe0.95Mn0.052.

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简介：主要介绍长钢一钢厂与武汉大西洋冶金工程技术有限公司合作，对小方坯连铸机进行高效化改造的情况，改造中采用了连续锥度结晶器、半板簧振动装置等，改造后效果显著。

简介：ThemeasurementsoftemperaturedependenceofthemagneticsusceptibilityofLa1-xSrxCoO3perovskiteoxidesatdifferentSrdoping(0≤x≤0.5)andannealingtemperaturewerepresented.Forthesamplewithx=0.1,ashoulderwasobservedaround150K,andapeakwhichisonefeatureofspinglassappearedaround50Kinthecurveofsusceptibilityversustemperature.Thehigh-temperature(250～420K)susceptibilityfitswellwithCurie-Weisslawforallsamples.WeissconstantandeffectivemagneticmomentweredeterminedandtheirvariationswithSrdopingandoxygenannealingconditionwereobtained.TheWeissconstantincreasesmonotonouslywithSrcontentforx>0.2.Thevaluesofeffectivemomentswereinterpretedwiththespinstateofcobaltions.Studiesonthesusceptibilitiesofthesampleswithx=0.2underdifferentpreparationtemperaturesandannealingtemperaturesshowthattherisingofsinteringtemperatureandannealingtemperaturewillincreasethepara-ferromagnetictransitiontemperature,andreducetheeffectivemomenttonormalvalue.OurresultshowsthatbothCo3+andCo4+ionsshouldbeinISstateafterannealingandtheoxygenannealingcausesthetransitionofCo3+spinstatefromHStoIS.

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简介：探讨了在大生产条件下4Cr5MoSiV1钢的脱碳层测定原则。结果表明,金相法测定结果较准确且操作简便

简介：连铸1Cr18Ni9Ti由于TiN夹杂导致扒皮率高,工艺难以控制。通过几年的技术攻关,严格控制AOD精炼参数,采用吹氩喂丝新技术以及连铸无氧化保护浇注、加厚铸坯等措施,有效地解决了连铸坯表面质量问题,产品性能良好,为太钢连铸优势的发挥奠定了基础。

简介：本文着重介绍了ＺｎＡ１ＲＥＭｇ四元热镀合金在手工镀锌行业的应用情况，提出了该合金在手工浸镀时的理想工艺参数，并进一步闸明：ＺｎＡ正ＲＥＭｇ合金镀层较纯锌镀层减薄１／３，抗蚀性能较单一锌镀层提高１－２倍。

简介：Whitebody-color(Y,Gd)BxV1-xO4-x:Eu3+phosphorswerepreparedbycoprecipitationreaction.UnderVUVexcitationat147nm,theredemissioncolorimetricpurityof(Y,Gd)BxV1-xO4-x:Eu3+phosphorismuchbetterthanthatofcommercialPDP(plasmadisplaypanels)phosphor(Y,Gd)BO3:Eu3+.Butitsrelativeemissionintensityisonlyabout90%ofthecommercialphosphor.

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简介：ThemagneticpropertiesandthephasestructureofTb1-xPrxFe1.96(x=0,0.1,...,0.7)werestudied.ItisfoundthatthesaturationmagnetizationoneasyaxisisdecreasedwithincreaseofPrcon-tent,from77.24Am^2·kg^-1forx=0,reducestominimumvalueof11.84Am^2·kg^-1forx=0.5,andreturnesto37.14Am^2·kg^-1forx=0.7.Thenon-cu-bicphasesappearbeyondx=0.2andthematrixchangesfrom1:2phaseforx=0to1:3phaseforx=0.4,atlastto2:17phaseforx=0.7.Thecom-poundsstructurewouldturnmorecomplexasthePrcontentincreases.

简介：阐述了影响1Cr18Ni9Ti管坯热穿孔工艺性能的因素,剖析了不锈钢荒管产生内折和纵裂的原因,提出了防止上述缺陷的措施。

简介：ThetransportpropertieswerestudiedforrareearthmanganeseoxideLa0.67Cao.33Mn1-xFexO3(x=0-O.3)systems.ItisfoundthatwithincreasingFe^3+-dopingcontentx,theresistanceincreasesandtheinsulator-metaltransitiontemperature(T1M)shiftstolowertemperature.Ifthedopingcontentissmall,thetransportpropertiesmanifestmetalliccharacteristicsinthetemperaturerangeofT＜T1M,whiletheywillobeyathermalactivationmodelinthetemperaturerangeofT＞T1M.SuchabehaviormaybeattributedtotheFe^3+-dopingandpossibleMnionsscatteringtoelectrons.TheFe^3+dopingmayleadtotheformationofFe^3+-O^2--Mn^4+channels,whichcouldterminatethedoubleexchangeMn^3+-O^2--Mn^4+channels.TheantiferromagneticclustersofFeionsmayinducetheMnionstoscettertotheelectrons.

简介：Theeffectofanexternalelectricfieldonthecrystallizationbehaviorofamorphous(Nd0.1Fe0.9)3Balloywasinvestigated.ThecrystallizationproductofNd2Fe23B3phasewasobtainedforthisamorphousalloyannealedat923Kfor300sinthepresenceofanexternalelectricfieldof300kV·m-1(50Hz);whilethecrystallizationproductsareNd1.1Fe4B4,α-Fe,andFe3Bphasesunderthesameannealingconditionexceptforfree-electricfield.Ontheotherhand,thesampleswereannealedat1023K,whichishigherthanthedecompositiontemperatureofmetastableNd2Fe23B3phase,for600s.Inthecaseofthepresenceofanexternalelectricfield,themetastableNd2Fe23B3phase,asamainphase,isstillstayedinthesample.ThisfactsuggeststhattheexternalelectricfieldenhancesthestabilizationofthemetastableNd2Fe23B3phase.Theeffectoftheexternalelectricfieldonthephaseselectionandstabilizationwasexplainedintermsofthespecificconductancedifferencebetweenthecrystallizationproducts.