简介：以EM223-16/16-DC.RLY模块元件级的维修实例,阐述了此模块的工作机制,并且通过抄板,将完整的电路图绘制下来,以便各位同行相互学习和交流。

简介：80yearshaspassedsinceduplexstainlesssteelswerefirstproducedandnowtheyhavedevelopedintoanintegralserieswiththeeffortsonR&Danddevelopmentoftechnology.Intherecentdecade,duplexstainlesssteelshavebeenacceptedbymoreandmorecustomersandincreasinglyused.ThefirstduplexgradeproducedinSwedenwas453E(26Cr-5Ni)inthe1930s,andthendevelopedinto329.Thesetwogradeswerecharacterizedbyhighcarboncontentandcalledthefirstgenerationofduplexstainlesssteels.Atthattime,itwasverydifficulttoaddnitrogenintothesteelsandmaintainthephaseequilibrium,thusinfluencingtheapplicationproperties,forexample,intergranularcorrosionpostwelding.Onemethodtosolvethisproblemistoalterthechemicalcomposition,likeaddingnitrogen,etc.AndthatcametorealitywiththedevelopmentofAODandmetallurgicaltheoryofstainlesssteels.Newseriesofduplexgrades,calledthesecondandthirdgenerationsduplex,havesuccessivelyemergedsincethe1980s.Thesegradesarecharacterizedbyhighamountsofalloyingelements,likechromium,molybdenumandnitrogen.Furthermore,superduplexstainlessgrades,likeS32750,S32760andS32707,weredevelopedforvariousharshserviceenvironmentswiththeiroutstandingcorrosionresistanceandworkability.Thesegradespossesscorrosionresistancecorrespondingtosuperausteniticgrades,orclosetonickel-basealloys,andareusedinocean-engineering,seawaterdesalinationandoilindustries,etc.Andtheapplicationofduplexstainlesssteelisexpendingintootherindustries.Forinstance,453Eisusedinthepulp&paperindustry.2205(S32205),amedium-alloyedgrade,hasbecomethemosttypicaloneintheduplexstainlesssteelfamilyandwidelyusedinmanyindustrieslikepulp&paper,chemicalandoil.Newapplicationsareemergingwithbetterunderstandingoftheduplexgrades.Modernduplexstainlesssteelsfeaturesmostthecorrosionresistanceandstrength,makingthemmostcost-efficientinmoreandmoreprojects.Int

简介：国际铁合金公司（IFM）面对疲软的需求和高库存量，计划减产铬铁产量，推延扩张计划。公司表示，铬铁需求不稳，公司将从12月1日减产铬铁量40％，从而IFM每月将产铬铁1．2万吨。

简介：我公司与北钢总院于1997年12月签订了关于合作开发16Mn微合金钢协议,主要目的在于通过铌微合金化改善16Mn钢的力学性能,提高16Mn钢板的性能合格率,以16Mnq桥梁钢作为研究开发的目标。

简介：High-strengthpipelinesteelandlargediameterlinepipesareoftenusedtoincreasethecapacityoftransportationandreducethecostassociatedwiththeconstructionandoperationoflong-distancegaspipelineprojects.China’sinitiativestoconstructlong-distancenaturalgaspipelineshasbroughtinnewopportunitiesforthedevelopmentofX80linepipes.BaosteelhasdesignedtheoptimumchemicalcompositionofX80withhighniobiumandlowmolybdenumcontent.Inaddition,aweldingexperimentalplatformandafiniteelementmodel(FEM)havesupportedthedevelopmentofX80UOEpipesinanefficientandeconomicalway.TheapplicationandrecentdevelopmentofX80UOEpipeswereintroducedinthispaper.TocomplywiththerequirementsoftheSecondWest-EastGasPipelineProject(2ndWEPP),X80pipelinesteelwithlowcarbonbainitemicrostructurewasdevelopedbyutilizingtheoptimizedcompositionandTMCPprocess.Thematchingweldingmaterial,weldingprocedureandUOEformingprocessesfor1219mmoutsidediameterX80UOEpipeswerealsodeveloped.Morethan340000tofX80UOEpipeswereproducedandappliedinthe2ndWEPP.Furthermore,tomeettheprospectivedemandforlong-distancegaspipelineswithanannualtransportationcapacityofover40billionm3,largersizeX80UOEpipeswith1422mmOD×30.8mmWTweretrialproducedrecently.DWTTperformance,themaintechnicalchallengeforheavierwallpipes,wasimprovedbyusingoptimizedmicrostructuraldesign.ThenewlydevelopedX80pipescanbepotentiallyusedforlargertransportationcapacitypipelinesinChina.

简介：台湾岛内媒体报道的消息称，受到镍价大跌带来的不锈钢市场信心不足，烨联5月28日宣布调降6月内外销盘价，内销盘价调降1000-4500元新台币，外销调降80-150美元。

简介：美国AK钢公司称，由于钢材需求的持续疲软和钢材价格的继续下滑，将会开始裁员。而在大约1个月前，该公司将公司员工的薪水下调了5％。

简介：针对16MnR冷弯裂断,指出轧制温度偏高,取样不规范是造成冷弯裂断的主要原因,提出整改措施。

简介：对管线钢X80落锤性能不合的钢板进行了分析。钢板的开冷温度偏低,造成钢板中出现较多的先共析铁素体组织,是造成落锤性能不合的关键因素,通过改进TMCP工艺,钢板的性能合格。

简介：美银美林（BankofAmericaMerrillLynch）分析师MichaelWidiner表示，镍价2011年均价或将跌至20，875美元／吨；较2010年21，202美元／吨均价下挫1．5％。

简介：介绍了南钢开发E36N高强船板的主要技术思路和关键工艺控制。通过对炼钢工艺的严格控制，得到了较高纯净度、内部质量较好的连铸坯；通过微合金化、合理的控轧控冷和正火工艺，得到了组织较细化的E36N钢板，具有优良的综合力学性能，满足供货要求。

简介：Aself-developedelectromagneticinduction-heatingdevicewasusedtoinvestigatethevariationinthemicrostructureandpropertiesofX80pipelinesteelintherapidinductiontemperingprocessatdifferentprocessparameters.Theeffectsofthetemperingconditionontoughness,microstructure,sizeanddistributionofprecipitatesofX80pipelinesteelwereobservedusingametallographicmicroscopyandscanningelectronmicroscopy.Comparedwiththesamplespreparedviatraditionaltemperingtechniques,resultsshowthatthesamplespreparedviarapidinductiontemperinghadimprovedperformances.Whentheheatingtemperatureis590℃,ataholdingtimeof90s,itwasfoundthatacicularferritewasrefined,carboniteprecipitationwassmall,andprecipitateswereevenlydistributedinthematrix.Thelow-temperatureimpactenergy,alsoknownastheimpactabsorptionenergy,at-40℃wasfoundtobe430.5Jfortherapidinductiontemperingsamplesand323.2Jforthetraditionallytemperedsample.Thelow-temperatureimpactenergyat-60℃wasfoundtobe351.3Jfortherapidinductiontemperedsampleand312.1Jforthetraditiontemperingsample.

简介：本文针对电炉炼钢厂吊钩组半封式护罩在应用中的缺陷提出了简单易行的改进方法。

简介：Resultspresentedinthisstudycontributetoinvestigationofthemicrostructureandmechanicalpropertiesofthehot-rolledFe16Mn0.6Csteelplates.Thesteelplateshavebeenproducedbybeinghot-rolledattemperaturesrangingfrom1100℃to850℃insevenpassesto97.5%reductioninthicknessandthencooledinafurnaceof650℃.Someplateshavebeenannealedattemperaturesrangingfrom300℃to1100℃for5minto60min,andthenfollowedbywaterquenching.Thereareannealingtwinsinthehot-rolledFe16M...

简介：江苏武进不锈钢管厂集团有限公司为使其不锈钢管产品能够更好地被客户认识和接受，

简介：ThecausestotheoutersurfacefoldingdefectsinN80-Qoilcountrytubulargoods(OCTG)wereinvestigatedthroughtheobservationofthedefects’morphology,microstructureandtheanalysisofthechemicalcompositions.Itisbelievedthatthedefectwasresultedfromtheintrinsicflawsthatoriginallyexistedonthebillet;theywereextendedandoxidizedduringthefollowingreheatingandrollingprocesses.Withmorestrictqualitycontrolandinspectionofthebillet,thedefectcanbepreventedeffectivelyfromoccurring.

简介：据造船海洋日刊消息，4月16日，中海发展股份有限公司表示，有可能为俄罗斯YamalLNG项目订造4艘LNG船。当天，中海发展发布公告称，该公司的全资子公司中国液化天然气运输有限公司与商船三井公司达成协议在香港成立最多4家50：50合资投资公司。

简介：党的十八大强调要推动经济持续健康发展，今年经济有望延续去年第四季度以来的回升态势，钢材需求将保持增长。同时，受进口铁矿石、煤炭等原燃材料价格不断上涨的影响，钢材价格有进一步上涨的动力，但将受到钢铁产能过剩、市场供大于求的抑制，呈波动运行态势。

简介：对南钢试制的低碳、高铌、不添加钼成分的高温轧制(HTP)的X80管线钢钢板的性能进行了分析,针对其显微组织特点进行了详细的观察和研究,并对DWTT断口形貌、夹杂物以及第二相粒子的成分、尺寸及分布进行了分析,证实了采用HTP工艺技术生产的管线钢板完全能够达到X80的现行技术标准要求。

简介：介绍了焦化小站交叉渡线施工的概况，总结了交叉渡线施工的特点，重点阐述了焦化小站的16^#-24^#交叉渡线施工的特色及应该采取的方法。