DIN 6927-1983 带凸缘的六角锁紧螺母.全金属螺母

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【英文标准名称】:StandardTestMethodforTestingFlexibleCellularMaterialsMeasurementofIndentationForceDeflectionUsinga25-mm(1-in.)DeflectionTechnique
【原文标准名称】:使用25mm(1in)挠曲技术试验压痕力挠曲的软微孔材料测量的标准试验方法
【标准号】:ASTMD5672-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D20.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:flexiblecellular;foamhardness;indentationtest;polyurethane;Flexiblecellularmaterials;Foamhardness;Hardness(indentation)--plastics;Indentationforcedeflection(IFD)
【摘要】:The25-mm(1-in.)deflectionIFDmethodisrecommendedforproductionscreeningandqualitycontrolonfullsizecushionsonly.Applicablecushionthicknessestobetestedbythistestmethodareonlythoselistedinthistestmethod.Furtherresearchanddevelopmentarerequiredbeforethistestmethodwillbeapplicabletoothercushionthicknesses.Thistestmethodisdesignedtogiveavalueapproximatingthe25%IFDona100-mm(4-in.)thickpieceoffoamwhentheactualspecimenthicknesstestediswithintherangeslistedinthetestmethod.Incaseofdisagreement,therefereemethodistheIFDprocedureinTestMethodsD3574,TestB1.Theuserofthistestmethodshallestablishthecorrelationbetweenthistestmethodandtherefereemethod.1.1Thistestmethodcoversascreeningtypequalitycontroltestusedtodetermineifflexiblepolyurethanefoamcushionsarewithinthespecifiedgraderangeforfirmness.1.2Thistestmethodislimitedtofoamswiththicknessesthatare75mm(3in.)orgreater.1.3ThistestmethodisbasedonthefactthatthetraditionalindustrystandardthicknessforIndentationForceDeflection(IFD)is100mm(4in.),andthetraditionalpercentdeflectionforIFDacceptanceandproductplanningis25%.Withrespectthentothesetraditionalindustryconventions,a25%deflectionona100-mm(4-in.)cushionwouldbe25mm(1in.).Thus,deflectingproperthicknesscushions25mm(1in.)willdetermineiftheflexiblepolyurethanefoamiswithinthespecifiedgraderangefor25%IFD.1.4Cushionthicknesseslessthan75mm(3in.)shallnotbetestedforIFDusingthistestmethod.1.5Thistestmethodisintendedtoprovideaquickandsimplemethodtoscreenflexiblepolyurethanefoamsfordeterminationofitsfirmnessgrade.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThistestmethodandISO2439addressthesamesubjectmatter,butdifferintechnicalcontent.
【中国标准分类号】:G30
【国际标准分类号】:83_100
【页数】:3P.;A4
【正文语种】:英语


【英文标准名称】:Aluminiumandaluminiumalloys-Rollingingots-Specifications
【原文标准名称】:铝和铝合金.轧制铸锭的规范
【标准号】:BSEN487-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2009-09-30
【实施或试行日期】:2009-09-30
【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】:铝;铝合金;棒材(材料);连续浇铸;定义(术语);尺寸规格;挤压;挤压锭;精整;形状公差;铸锭;极限偏差;作标记;材料;金属;有色金属;轧制的;轧制钢锭;半成品;规范;规范(验收);储存;试验证明书;测试;运输
【英文主题词】:Aluminium;Aluminiumalloys;Bars(materials);Continuouscasting;Definitions;Dimensions;Extruding;Extrusioningots;Finishes;Formtolerances;Ingots;Limitdeviations;Marking;Materials;Metals;Non-ferrousmetals;Rolled;Rollingingots;Semi-finishedproducts;Specification;Specification(approval);Storage;Testcertificates;Testing;Transport
【摘要】:ThisEuropeanStandardspecifiesthegeneralrequirementstobemetbyrollingingotsofaluminiumoraluminiumalloysobtainedbysemi-continuousverticalcasting.
【中国标准分类号】:H61
【国际标准分类号】:77_150_10
【页数】:16P.;A4
【正文语种】:英语