JT 4126-1983 法兰铸铁组合吸入截止阀箱
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基本信息
| 标准名称： | 法兰铸铁组合吸入截止阀箱 |
| 中标分类： | 机械 >> 通用零部件 >> 阀门 |
| 发布日期： | |
| 实施日期： | 1983-12-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 2页 |
适用范围
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引用标准
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所属分类： 机械 通用零部件 阀门
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【英文标准名称】:StandardTestMethodforVickersIndentationHardnessofAdvancedCeramics
【原文标准名称】:高级陶瓷的维氏压痕硬度的标准试验方法
【标准号】:ASTMC1327-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:C28.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:advancedceramics;cracks;indentation;microscope;Vickershardness;Advancedceramics;Hardness(indentation);Microscopicexamination--advancedceramics;Opticalmicroscopy;Vickershardness(HV)
【摘要】:Foradvancedceramics,Vickersindentersareusedtocreateindentationswhosesurface-projecteddiagonalsaremeasuredwithopticalmicroscopes.TheVickersindentercreatesasquareimpressionfromwhichtwosurface-projecteddiagonallengthsaremeasured.Vickershardnessiscalculatedfromtheratiooftheappliedloadtotheareaofcontactofthefourfacesoftheundeformedindenter.(Incontrast,Knoopindentersarealsousedtomeasurehardness,butKnoophardnessiscalculatedfromtheratiooftheappliedloadtotheprojectedareaonthespecimensurface.)Vickersindentationhardnessisoneofmanypropertiesthatisusedtocharacterizeadvancedceramics.AttemptshavebeenmadetorelateVickersindentationhardnesstootherhardnessscales,butnogenerallyacceptedmethodsareavailable.Suchconversionsarelimitedinscopeandshouldbeusedwithcaution,exceptforspecialcaseswhereareliablebasisfortheconversionhasbeenobtainedbycomparisontests.Vickersindentationdiagonallengthsareapproximately2.8timesshorterthanthelongdiagonalofKnoopindentations,andtheindentationdepthisapproximately1.5timesdeeperthanKnoopindentationsmadeatthesameforce.Vickersindentationsareinfluencedlessbyspecimensurfaceflatness,parallelism,andsurfacefinishthanKnoopindentations,buttheseparametersmustbeconsiderednonetheless.VickersindentationsaremuchmorelikelytocausecracksinadvancedceramicsthanKnoopindentations.Thecracksmayinfluencethemeasuredhardnessbyfundamentallyalteringthedeformationprocessesthatcontributetotheformationofanimpression,andtheymayimpairorprecludemeasurementofthediagonallengthsduetoexcessivedamageattheindentationtipsorsides.Afullhardnesscharacterizationincludesmeasurementsoverabroadrangeofindentationforces.Vickershardnessofceramicsusuallydecreaseswithincreasingindentationsizeorindentationforce.Thetrendisknownastheindentationsizeeffect(ISE).Hardnessapproachesaplateauconstanthardnessatsufficientlylargeindentationsizeorforces.Thetestforcesorloadsthatareneededtoachieveaconstanthardnessvarywiththeceramic.Thetestforcespecifiedinthisstandardisintendedtobesufficientlylargethathardnessiseitherclosetoorontheplateau,butnotsolargeastointroduceexcessivecracking.AcomprehensivecharacterizationoftheISEisrecommendedbutisbeyondthescopeofthistestmethod,whichmeasureshardnessatasingle,designatedforce.1.1ThistestmethodcoversthedeterminationoftheVickersindentationhardnessofadvancedceramics.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q32
【国际标准分类号】:81_060_99
【页数】:8P.;A4
【正文语种】:英语
【英文标准名称】:Bindersforpaintsandvarnishes.Determinationoftheviscosityofindustrialcellulosenitratesolutionsandclassificationofsuchsolutions
【原文标准名称】:涂料和清漆用粘合剂.工业硝化纤维素溶液粘度测定及此类溶液的分类
【标准号】:BSENISO14446-2010
【标准状态】:现行
【国别】:英国
【发布日期】:1999-09-15
【实施或试行日期】:1999-09-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:调节;粘合剂;分类;涂层材料;胶棉;动力粘度;硝化纤维;涂料;试样;抽样方法;溶液;试验;清漆;粘度测量法;粘度;粘度等级;粘度测量
【英文主题词】:Adjustments;Bindingagents;Classification;Coatingmaterials;Collodioncotton;Dynamicviscosity;Nitrocellulose;Paints;Samples;Samplingmethods;Solutions;Testing;Varnishes;Viscosimetry;Viscosity;Viscosityclasses;Viscositymeasurement
【摘要】:
【中国标准分类号】:G52
【国际标准分类号】:87_060_20
【页数】:12P;A4
【正文语种】:英语
【原文标准名称】:高级陶瓷的维氏压痕硬度的标准试验方法
【标准号】:ASTMC1327-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:C28.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:advancedceramics;cracks;indentation;microscope;Vickershardness;Advancedceramics;Hardness(indentation);Microscopicexamination--advancedceramics;Opticalmicroscopy;Vickershardness(HV)
【摘要】:Foradvancedceramics,Vickersindentersareusedtocreateindentationswhosesurface-projecteddiagonalsaremeasuredwithopticalmicroscopes.TheVickersindentercreatesasquareimpressionfromwhichtwosurface-projecteddiagonallengthsaremeasured.Vickershardnessiscalculatedfromtheratiooftheappliedloadtotheareaofcontactofthefourfacesoftheundeformedindenter.(Incontrast,Knoopindentersarealsousedtomeasurehardness,butKnoophardnessiscalculatedfromtheratiooftheappliedloadtotheprojectedareaonthespecimensurface.)Vickersindentationhardnessisoneofmanypropertiesthatisusedtocharacterizeadvancedceramics.AttemptshavebeenmadetorelateVickersindentationhardnesstootherhardnessscales,butnogenerallyacceptedmethodsareavailable.Suchconversionsarelimitedinscopeandshouldbeusedwithcaution,exceptforspecialcaseswhereareliablebasisfortheconversionhasbeenobtainedbycomparisontests.Vickersindentationdiagonallengthsareapproximately2.8timesshorterthanthelongdiagonalofKnoopindentations,andtheindentationdepthisapproximately1.5timesdeeperthanKnoopindentationsmadeatthesameforce.Vickersindentationsareinfluencedlessbyspecimensurfaceflatness,parallelism,andsurfacefinishthanKnoopindentations,buttheseparametersmustbeconsiderednonetheless.VickersindentationsaremuchmorelikelytocausecracksinadvancedceramicsthanKnoopindentations.Thecracksmayinfluencethemeasuredhardnessbyfundamentallyalteringthedeformationprocessesthatcontributetotheformationofanimpression,andtheymayimpairorprecludemeasurementofthediagonallengthsduetoexcessivedamageattheindentationtipsorsides.Afullhardnesscharacterizationincludesmeasurementsoverabroadrangeofindentationforces.Vickershardnessofceramicsusuallydecreaseswithincreasingindentationsizeorindentationforce.Thetrendisknownastheindentationsizeeffect(ISE).Hardnessapproachesaplateauconstanthardnessatsufficientlylargeindentationsizeorforces.Thetestforcesorloadsthatareneededtoachieveaconstanthardnessvarywiththeceramic.Thetestforcespecifiedinthisstandardisintendedtobesufficientlylargethathardnessiseitherclosetoorontheplateau,butnotsolargeastointroduceexcessivecracking.AcomprehensivecharacterizationoftheISEisrecommendedbutisbeyondthescopeofthistestmethod,whichmeasureshardnessatasingle,designatedforce.1.1ThistestmethodcoversthedeterminationoftheVickersindentationhardnessofadvancedceramics.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q32
【国际标准分类号】:81_060_99
【页数】:8P.;A4
【正文语种】:英语
【英文标准名称】:Bindersforpaintsandvarnishes.Determinationoftheviscosityofindustrialcellulosenitratesolutionsandclassificationofsuchsolutions
【原文标准名称】:涂料和清漆用粘合剂.工业硝化纤维素溶液粘度测定及此类溶液的分类
【标准号】:BSENISO14446-2010
【标准状态】:现行
【国别】:英国
【发布日期】:1999-09-15
【实施或试行日期】:1999-09-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:调节;粘合剂;分类;涂层材料;胶棉;动力粘度;硝化纤维;涂料;试样;抽样方法;溶液;试验;清漆;粘度测量法;粘度;粘度等级;粘度测量
【英文主题词】:Adjustments;Bindingagents;Classification;Coatingmaterials;Collodioncotton;Dynamicviscosity;Nitrocellulose;Paints;Samples;Samplingmethods;Solutions;Testing;Varnishes;Viscosimetry;Viscosity;Viscosityclasses;Viscositymeasurement
【摘要】:
【中国标准分类号】:G52
【国际标准分类号】:87_060_20
【页数】:12P;A4
【正文语种】:英语
