JB/Z 208-1984 机床 涂层导轨涂敷工艺
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基本信息
| 标准名称： | 机床 涂层导轨涂敷工艺 |
| 中标分类： | 机械 >> 金属切削机床 >> 机床综合 |
| 发布日期： | |
| 实施日期： | 2001-10-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： |
适用范围
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前言
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引用标准
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所属分类： 机械 金属切削机床 机床综合
下载地址: 点击此处下载
【英文标准名称】:Dimensionaltolerancesforaluminiummillproducts(metric)
【原文标准名称】:铝轧制品(米制)的尺寸公差
【标准号】:ANSIH35.2M-1988
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:
【英文标准名称】:StandardTestMethodforDeterminationofReferenceTemperature,To,forFerriticSteelsintheTransitionRange
【原文标准名称】:确定铁素体钢在转变范围内的基准温度的标准试验方法
【标准号】:ASTME1921-2010e1
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E08.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Ferriticsteel;Fracturetesting--metals/alloys;Referencetemperature
【摘要】:Fracturetoughnessisexpressedintermsofanelastic-plasticstressintensityfactor,KJc,thatisderivedfromtheJ-integralcalculatedatfracture.Ferriticsteelsareinhomogeneouswithrespecttotheorientationofindividualgrains.Also,grainboundarieshavepropertiesdistinctfromthoseofthegrains.Bothcontaincarbidesornonmetallicinclusionsthatcanactasnucleationsitesforcleavagemicrocracks.Therandomlocationofsuchnucleationsiteswithrespecttothepositionofthecrackfrontmanifestsitselfasvariabilityoftheassociatedfracturetoughness(13).Thisresultsinadistributionoffracturetoughnessvaluesthatisamenabletocharacterizationusingstatisticalmethods.DistributionsofKJcdatafromreplicatetestscanbeusedtopredictdistributionsofKJcfordifferentspecimensizes.Theoreticalreasoning(9),confirmedbyexperimentaldata,suggeststhatafixedWeibullslopeof4appliestoalldatadistributionsand,asaconsequence,standarddeviationondatascattercanbecalculated.DatadistributionandspecimensizeeffectsarecharacterizedusingaWeibullfunctionthatiscoupledwithweakest-linkstatistics(14).Anupperlimitonconstraintlossandalowerlimitontesttemperaturearedefinedbetweenwhichweakest-linkstatisticscanbeused.TheexperimentalresultscanbeusedtodefineamastercurvethatdescribestheshapeandlocationofmedianKJctransitiontemperaturefracturetoughnessfor1Tspecimens(15).Thecurveispositionedontheabscissa(temperaturecoordinate)byanexperimentallydeterminedreferencetemperature,To.Shiftsinreferencetemperatureareameasureoftransitiontemperaturechangecaused,forexample,bymetallurgicaldamagemechanisms.ToleranceboundsonKJccanbecalculatedbasedontheoryandgenericdata.Foraddedconservatism,anoffsetcanbeaddedtotoleranceboundstocovertheuncertaintyassociatedwithestimatingthereferencetemperature,To,fromarelativelysmalldataset.FromthisitispossibletoapplyamarginadjustmenttoTointheformofareferencetemperatureshift.Forsomematerials,particularlythosewithlowstrainhardening,thevalueofTomaybeinfluencedbyspecimensizeduetoapartiallossofcrack-tipconstraint(5).Whenthisoccurs,thevalueofTomaybelowerthanthevaluethatwouldbeobtainedfromadatasetofKJcvaluesderivedusinglargerspecimens.1.1Thistestmethodcoversthedeterminationofareferencetemperature,To,whichcharacterizesthefracturetoughnessofferriticsteelsthatexperienceonsetofcleavagecrackingatelastic,orelastic-plasticKJcinstabilities,orboth.Thespecifictypesofferriticsteels(3.2.1)coveredarethosewithyieldstrengthsrangingfrom275to825MPa(40to120ksi)andweldmetals,afterstress-reliefannealing,thathave10%orlessstrengthmismatchrelativetothatofthebasemetal.1.2Thespecimenscoveredarefatigueprecrackedsingle-edgenotchedbendbars,SE(B),andstandardordisk-shapedcompacttensionspecimens,C(T)orDC(T).Arangeofspecimensizeswithproportionaldimensionsisrecommended.Thedimensiononwhichtheproportionali......
【中国标准分类号】:H42
【国际标准分类号】:77_040_10
【页数】:22P.;A4
【正文语种】:英语
【原文标准名称】:铝轧制品(米制)的尺寸公差
【标准号】:ANSIH35.2M-1988
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:
【英文标准名称】:StandardTestMethodforDeterminationofReferenceTemperature,To,forFerriticSteelsintheTransitionRange
【原文标准名称】:确定铁素体钢在转变范围内的基准温度的标准试验方法
【标准号】:ASTME1921-2010e1
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E08.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Ferriticsteel;Fracturetesting--metals/alloys;Referencetemperature
【摘要】:Fracturetoughnessisexpressedintermsofanelastic-plasticstressintensityfactor,KJc,thatisderivedfromtheJ-integralcalculatedatfracture.Ferriticsteelsareinhomogeneouswithrespecttotheorientationofindividualgrains.Also,grainboundarieshavepropertiesdistinctfromthoseofthegrains.Bothcontaincarbidesornonmetallicinclusionsthatcanactasnucleationsitesforcleavagemicrocracks.Therandomlocationofsuchnucleationsiteswithrespecttothepositionofthecrackfrontmanifestsitselfasvariabilityoftheassociatedfracturetoughness(13).Thisresultsinadistributionoffracturetoughnessvaluesthatisamenabletocharacterizationusingstatisticalmethods.DistributionsofKJcdatafromreplicatetestscanbeusedtopredictdistributionsofKJcfordifferentspecimensizes.Theoreticalreasoning(9),confirmedbyexperimentaldata,suggeststhatafixedWeibullslopeof4appliestoalldatadistributionsand,asaconsequence,standarddeviationondatascattercanbecalculated.DatadistributionandspecimensizeeffectsarecharacterizedusingaWeibullfunctionthatiscoupledwithweakest-linkstatistics(14).Anupperlimitonconstraintlossandalowerlimitontesttemperaturearedefinedbetweenwhichweakest-linkstatisticscanbeused.TheexperimentalresultscanbeusedtodefineamastercurvethatdescribestheshapeandlocationofmedianKJctransitiontemperaturefracturetoughnessfor1Tspecimens(15).Thecurveispositionedontheabscissa(temperaturecoordinate)byanexperimentallydeterminedreferencetemperature,To.Shiftsinreferencetemperatureareameasureoftransitiontemperaturechangecaused,forexample,bymetallurgicaldamagemechanisms.ToleranceboundsonKJccanbecalculatedbasedontheoryandgenericdata.Foraddedconservatism,anoffsetcanbeaddedtotoleranceboundstocovertheuncertaintyassociatedwithestimatingthereferencetemperature,To,fromarelativelysmalldataset.FromthisitispossibletoapplyamarginadjustmenttoTointheformofareferencetemperatureshift.Forsomematerials,particularlythosewithlowstrainhardening,thevalueofTomaybeinfluencedbyspecimensizeduetoapartiallossofcrack-tipconstraint(5).Whenthisoccurs,thevalueofTomaybelowerthanthevaluethatwouldbeobtainedfromadatasetofKJcvaluesderivedusinglargerspecimens.1.1Thistestmethodcoversthedeterminationofareferencetemperature,To,whichcharacterizesthefracturetoughnessofferriticsteelsthatexperienceonsetofcleavagecrackingatelastic,orelastic-plasticKJcinstabilities,orboth.Thespecifictypesofferriticsteels(3.2.1)coveredarethosewithyieldstrengthsrangingfrom275to825MPa(40to120ksi)andweldmetals,afterstress-reliefannealing,thathave10%orlessstrengthmismatchrelativetothatofthebasemetal.1.2Thespecimenscoveredarefatigueprecrackedsingle-edgenotchedbendbars,SE(B),andstandardordisk-shapedcompacttensionspecimens,C(T)orDC(T).Arangeofspecimensizeswithproportionaldimensionsisrecommended.Thedimensiononwhichtheproportionali......
【中国标准分类号】:H42
【国际标准分类号】:77_040_10
【页数】:22P.;A4
【正文语种】:英语