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:摘要 : PROFIBUS-DP 网络是一种在工业控制方面经常见到的工业总线型网络。但是 DP 网络系统经常会出现网络闪电故障问题,直接影响到了工业的正常生产,有的时候甚至会造成非常严重的工业事故。因此,必须要去对其故障进行统计以及分析,查找容易引发故障的原因,并且对网络进行简化处理。减少容易出现故障的点的数量,并且安装一个中继器。有助于增强网络的传输能力,降低了网络出现故障的概率。并且安装了智能诊断仪,有助于帮助诊断网络的运行情况。对于一些故障可以提前发现,并且及时的预防,能够有效的为设备的运行提供保障。
简介:摘要:实验研究粘胶纤维生产全过程中,浆粕及浆料各种形态下DP数值多少以及它的降聚情况,根据这些数据,进一步研究是否可探寻出一种检测项目,可全生产过程进行检测,来监督指导生产工艺的调整,以便成品各项指标符合标准及下游客户的满意。