简介：从理论介绍和实际应用两方面讨论了PROFIBUS-DP网的工作原理,通过PLC实现对原料厂生产系统的监控和管理。

简介：双相钢的基本成分为C和Mn，有时为了提高淬透性还添加一定量的Cr和Mo。DP钢是由低碳钢或低碳微合金钢经两相区热处理或控制轧制工艺而得到的一种高强度钢，包括热轧、冷轧、电镀和热镀锌产品。双相钢板钢的显微组织主要为铁素体和马氏体，热轧DP钢的生产通过控制冷却来得到铁素体和马氏体的组织，冷轧和热镀锌DP钢通过铁素体和奥氏体两相区退火和随后的快速冷却来得到铁素体和马氏体组织。

简介：Steelhasbeenusedasatraditionalwheelmaterialsforalongtime.Before1980’s,over90%wheelsweremadeofsteels.Then,theyieldstrengthofwheelsteelsincreasedgraduallyfrom240-350MPato600MPaorhigher.Theadvancedhighstrengthsteelsbecomethemainwheelmaterials.Since1990’s,DP600hasbeenbroadlyappliedinsteelwheelsoversea.However,therewaslittleresearchofapplicationofhighstrengthsteelwheels(especiallywheeldisc)indomesticwheelindustrial.Inpresence,DP600steelwheelisonlydevelopedinFAWSHbyusingimportedCKD.OtherdomesticsteelwheelmanufacturersdidlittleworkonhighstrengthDP600wheeldiscs.BaosteelwheelsCo.Ltd.isthefirstdomesticcompanyproducingDP600steeldiscsandhasbecometheleadingcompanyinproductionofhighstrengthwheel.BecauseofthehighstrengthofDP600,itsformability,springback,andwrinklehavebecomethekeysofthesuccessfulapplicationofDP600steel.Inthispaper,themetallurgicalandmechanicalpropertiesarefirstlyintroducedandformationproblemsofDP600aredescribedcomparedtotraditionalsteels.Secondly,FLDanalysishasbeendone.Wrinkleandmorespringbackarerecognized.Tosolvetheseproblems,anoptimizedsolutionisdesignedandthegoodresultisobtained.ThetesthasshownthatthefatiguepropertyofsteelwheeldiscsmadebyDP600havebeengreatlyimproved.

简介：通过对砂轮锯区域通讯故障的解决，分析现场总线PROFIBUS的不稳定因数和探讨抗干扰的措施．提高现场总线PROFIBUS的可靠性。

简介：PBMD485-K20是一款针对RS485接口设备接入PROFIBUS现场总线的协议转换器，通过转换器可实现RS485接口接入PROFIBUS现场总线网络的功能。RS485转PROFIBUS协议转换器应用广泛，可以实现现场设备与PROFIBUS的通讯。本文主要介绍了400万选矿过滤间12台螺杆空压机控制系统．通过RS485接口与PROFIBUS-DP的通讯，再通过以太网实现与中心变电所网关进行通讯．对螺杆空压机运行参数进行监控的过程．

简介：Advancedhighstrengthsteel(AHSS)hasbeenwidelyusedintheautomobileindustry.TheresistancespotweldingperformanceofDP980andQ&P980steelswasstudiedthroughcomparingthetwosteels'weldingcurrentrange,tensileshearstrength(TSS),crosstensionstrength(CTS),weldspots'microhardness,etc.Thefollowingconclusionswereachieved:ItiseasyforbothDP980andQ&P980steelstogetanuggetsizebiggerthan4mm,theyallhaveweldingcurrentrangesexceeding2kAandhighweldstrength.