简介：Machinetoolhasbeenwidelyusedintheproductionofthemilitaryandcivilian.Themachiningprecisionoftheworkpieceisthedirectreflectionforthemachiningperformanceofmachinetool.Withtheimprovementforrequirementofthemachiningprecision,improvingtheaccuracyofmachiningisbecomingimportant.Guidewayandspindlearethekeymotioncomponentsthatdecidedtheshape,therelativepositionandthesurfaceroughnessoftheworkpiece.Inordertoadapttotherequirementsoftheworkpiecemachining,thispaperanalyzestheerrorsofguidewayandspindlethataffecttheaccuracyoftheprocessing,establishesthemotionrelationsforeveryerrorsofguidewayinmachiningprocess,identifiestheregularforthestraightness,bendingoftheguidewayandrotatingerrorofspindlethatinfluencestheworkpiecesurface.Finally,accordingtothecorrelationanalysisofthemeasuredandthesimulationresults,themotionerrorofmachinetoolisidentified,whichlaysthefoundationforimprovingtheaccuracyofmachinetoolinnextstep.

简介：Anionomer类型水运的聚氨酯分散(手)被获得从poly(丙烯乙二醇)(PPG)，isophoronediisocyanate(IPDI)和通过修改prepolymerisocyanate的dimethylolpropionic酸(DMPA)处理。聚氨酯的二个系列被准备(组A和B)并且一个新预言模型基于灰关系分析被介绍在几个性质上预言原料的影响顺序例如固体内容，粘性，酸数字和聚氨酯的电解稳定性。模型罐头成功地通过设计示范实验在性质上预言原料的影响，这被发现。而且，预言模型的结果证明DMPA在粘性，部分酸价值和电解稳定性起一个关键作用。

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简介：Thepurposeofthisresearchistoquantifytheeffectsofcompositionalandprocessingparametersonthemicrostructureandpropertiesofdualphasesteelproduceddirectlybyhotrollingandrapidcooling.Steelswiththebasecompositionof0.1%C,1.4%Si,and1.0%Mnwithadditionsof0.5%Crtoinfluencehardenability,0.04%Nbtoretardrecrystallizationinthelatterstagesofrolling,or0.02%Titoinhibitgraingrowthduringandafterreheatingwereinvestigated.Investigationwasmadetopredictmicrostructureevolutionandtocorrelatemicrostructurewithprocessingparameters.Theeffectsoftheimportantmicrostructureparameterssuchasferritegrainsize,martensitevolumefraction(VM)andmorphology(polygonalorfibrous)onthetensileandimpactpropertiesarediscussed.Multiplelinearregressionanalysisoftheultimatetensilestrengthhasshownthat,increasingVMandmartensitemicrohardnessandgrainrefinementofferritearethemajorcontributionstoincreasethestrengthofthesteel.Itwasfoundthatthedual-phasesteelproducedbycontrolledrollingprocess,withamicrostructurewhichconsistedoffinegrainedferrite(4μm)and35%～40%fibrousmartensite,presentedoptimumtensileandimpactpropertiesbecauseofenhancedresistancetocrackpropagation.

简介：商业谷物面向的电的钢被十字做砍滚动(CSR)与选择失配加速比率1.1。0.75公里的原来的表厚，它被常规冷滚动并且中间的退火生产了，从0.35公里被卷到厚度到0.5公里，并且由退火的工业列在后面。变丑质地和磁性被测量。结果显示那：处于CSR的条件，卷的表的变丑质地通常类似于常规卷的表的；为有到0.25公里的从0.35公里的厚度的表，有利变丑质地，主要由左钩住组成111正确钩住(112)，也在表面下的层被发现，它可以帮助生产锋利的高斯质地；并且在期末考试以后退火，表的磁性不比常规卷的表的低。(编辑作者摘要)11个裁判员。

简介：AA6005A-T6铝空挤出是磨擦搅动以2000的高焊接速度焊接了?mm/min和各种各样的轴的力量。结果证明金块地区(NZ)被好equiaxed谷物，平衡阶段的低密度在被观察描绘。在thermo机械地影响的地区(TMAZ)的谷物被伸长，并且脱臼的最高的密度和低密度猛抛能在谷物被发现。热影响地区(HAZ)仅仅经历一个低热周期，和高密度猛抛并且低密度猛抛在变粗的谷物的遗体。在NZ，TMAZ和HAZ的microhardness进化被谷物管理分别地加强的加强的加强的精炼和脱臼，脱臼和降水，和降水和稳固的答案。当增加轴的力量时，加强机制的变化趋势与在每个地区的其它相反，并且microhardness在不同地区增加。作为结果，张力的力量粗略地与提起轴的力量增加，并且所有连接表演高焊接速度禁止变粗，加强的溶解显著地猛抛的好张力的性质。

简介：Withpositronannihilationradiationonedimensionangular-correlationdevice,itismeasuredthatpositronannihilationradiationonedimensionangular-correlationcurvesofpolycrystalsodiumionconductorNa5Y1-xCrxSi4O12（NYCS）system.Afterelectronmomentumdistributioncurvesarenormalized,linearparametersarecalculated.TheparametersH,WandSshowthechangeofNa+ionvacancyconcentrationinNYCSseriessamples.TheresultsshowthatparametersH,WandSofonedimensionangular-correlationcurvesofthosesamplesvarygreatlywithCr2O3contents.WithCr2O3contentincreasing,HandSparametersincrease,butWdecreases,andreachesextremesatx=0.05;thenwithCr203addingcontinually,parametersHandSdecreasegradually,parameterWincreasesgradually.Thisshowsthat,inaddtiontoCr2O3,theconductivityhascloserelation