ZB J 41008-1989 矩形花键拉刀 技术条件
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基本信息
| 标准名称： | 矩形花键拉刀 技术条件 |
| 中标分类： | 机械 >> 工艺装备 >> 刀具 |
| 替代情况： | 被JB/T 9992-1999代替 |
| 发布日期： | |
| 实施日期： | 1990-07-01 |
| 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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目录
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引用标准
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所属分类： 机械 工艺装备 刀具
下载地址: 点击此处下载
【英文标准名称】:StandardTestMethodsforImpactResistanceofRigidPoly(VinylChloride)(PVC)BuildingProducts
【原文标准名称】:硬质聚氯乙烯(PVC)建筑产品耐冲击性的标准试验方法
【标准号】:ASTMD4226-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D20.24
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:建筑;塑料制品;塑料;聚氯乙烯;试验;冲击试验;冲击强度
【英文主题词】:brittlefailureenergy;buildingproducts;failureenergy;fallingweight;impacttest
【摘要】:Theimpactstrengthvaluesobtainedontheflatsectionsofabuildingproductprofilearerelevantonlytotheflatsectionthathasbeentestedandthesevaluesdonotnecessarilyindicatetheimpactresistanceofthewholeproduct,whichisaffectedbytheconfigurationoftheprofile(thatis,corners,ribs,etc).Constantweightandvariableheight,employedinthesetestmethods,allowthevelocityofimpacttovaryand,therefore,byProcedureB,candeterminetheenergyofductile-to-brittletransition,whichcannotbedeterminedifavariableweightisdroppedfromaconstantheight.Thesetestprocedureshavebeenfoundtobeusefulelementsinrigidpoly(vinylchloride)(PVC)buildingproductcharacterization.Compoundqualification,finishedproductqualitycontrol,environmentalandweatherabilityresearchanddevelopmentstudies,andfabricationtolerancepredictionconstituteusefulapplications.Choiceofthespecificimpactorheadconfigurationusedisrelatedtoavarietyofproductattributes,suchasspecimenthicknessandproducttoughnessaswellasabstractfactors,suchastheanticipatedmodeoffailureinaspecificapplication.Thegeometricuniquenessoftheimpactorheadconfigurationspreventsanycomparisonorcorrelationoftestingresultsonsamplestestedwithdifferingimpactorheadconfigurations.Ingeneral,theconicalimpactor,C.125,isusefultoensurefailureofthickerspecimenswheretheH.25impactorcausednofailure.Note28212;Equivalentsurfaceconditionsaremorelikelytooccurwhenspecimensarepreparedbycompressionmoldingorextrusionthanbyinjectionmolding.Whencomparingdifferentsamplestestedwiththesameimpactorheadconfiguration,impactresistanceshallbepermittedtobenormalizedforaveragespecimenthicknessoverareasonablybroadrange(forexample,1to3mm).3However,thisshouldonlybedonewhenthesurfaceconditionslistedin6.1areessentiallyequivalent.FIG.2ImpactTester1.1Thesetestmethodscoverthedeterminationoftheenergyrequiredtocrackorbreakrigidpoly(vinylchloride)(PVC)plasticsheetingandprofileflatsectionsusedinbuildingproducts,aswellasextrudedormoldedtestsamples,underspecifiedconditionsofimpactfromafreefallingstandardweightstrikinganimpactorwitheitheroftwoconfigurationsincontactwiththespecimen.1.2Twotestproceduresareincluded:1.2.1ProcedureA,usedtodetermineminimumimpactenergyrequiredtocausefailure(hole,crack,split,shatter,ortear).1.2.2ProcedureB,usedtodetermineminimumimpactenergyrequiredtocausebrittlefailure.1.3Thevaluesininch-poundunitsaretoberegardedasthestandard.Note18212;ThereisnosimilarorequivalentISOstandard.1.4Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excluding,thoseintablesinfigures)shallnotbeconsideredasrequirementsofthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection8.
【中国标准分类号】:Q74
【国际标准分类号】:83_080_20
【页数】:7P.;A4
【正文语种】:
【原文标准名称】:硬质聚氯乙烯(PVC)建筑产品耐冲击性的标准试验方法
【标准号】:ASTMD4226-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D20.24
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:建筑;塑料制品;塑料;聚氯乙烯;试验;冲击试验;冲击强度
【英文主题词】:brittlefailureenergy;buildingproducts;failureenergy;fallingweight;impacttest
【摘要】:Theimpactstrengthvaluesobtainedontheflatsectionsofabuildingproductprofilearerelevantonlytotheflatsectionthathasbeentestedandthesevaluesdonotnecessarilyindicatetheimpactresistanceofthewholeproduct,whichisaffectedbytheconfigurationoftheprofile(thatis,corners,ribs,etc).Constantweightandvariableheight,employedinthesetestmethods,allowthevelocityofimpacttovaryand,therefore,byProcedureB,candeterminetheenergyofductile-to-brittletransition,whichcannotbedeterminedifavariableweightisdroppedfromaconstantheight.Thesetestprocedureshavebeenfoundtobeusefulelementsinrigidpoly(vinylchloride)(PVC)buildingproductcharacterization.Compoundqualification,finishedproductqualitycontrol,environmentalandweatherabilityresearchanddevelopmentstudies,andfabricationtolerancepredictionconstituteusefulapplications.Choiceofthespecificimpactorheadconfigurationusedisrelatedtoavarietyofproductattributes,suchasspecimenthicknessandproducttoughnessaswellasabstractfactors,suchastheanticipatedmodeoffailureinaspecificapplication.Thegeometricuniquenessoftheimpactorheadconfigurationspreventsanycomparisonorcorrelationoftestingresultsonsamplestestedwithdifferingimpactorheadconfigurations.Ingeneral,theconicalimpactor,C.125,isusefultoensurefailureofthickerspecimenswheretheH.25impactorcausednofailure.Note28212;Equivalentsurfaceconditionsaremorelikelytooccurwhenspecimensarepreparedbycompressionmoldingorextrusionthanbyinjectionmolding.Whencomparingdifferentsamplestestedwiththesameimpactorheadconfiguration,impactresistanceshallbepermittedtobenormalizedforaveragespecimenthicknessoverareasonablybroadrange(forexample,1to3mm).3However,thisshouldonlybedonewhenthesurfaceconditionslistedin6.1areessentiallyequivalent.FIG.2ImpactTester1.1Thesetestmethodscoverthedeterminationoftheenergyrequiredtocrackorbreakrigidpoly(vinylchloride)(PVC)plasticsheetingandprofileflatsectionsusedinbuildingproducts,aswellasextrudedormoldedtestsamples,underspecifiedconditionsofimpactfromafreefallingstandardweightstrikinganimpactorwitheitheroftwoconfigurationsincontactwiththespecimen.1.2Twotestproceduresareincluded:1.2.1ProcedureA,usedtodetermineminimumimpactenergyrequiredtocausefailure(hole,crack,split,shatter,ortear).1.2.2ProcedureB,usedtodetermineminimumimpactenergyrequiredtocausebrittlefailure.1.3Thevaluesininch-poundunitsaretoberegardedasthestandard.Note18212;ThereisnosimilarorequivalentISOstandard.1.4Thetextofthisstandardreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excluding,thoseintablesinfigures)shallnotbeconsideredasrequirementsofthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection8.
【中国标准分类号】:Q74
【国际标准分类号】:83_080_20
【页数】:7P.;A4
【正文语种】:
基本信息
| 标准名称： | 半导体集成电路电压调整器系列和品种 |
| 英文名称： | Series and products of voltage regulators for semiconductor integrated circuits |
| 中标分类： | 电子元器件与信息技术 >> 微电路 >> 半导体集成电路 |
| ICS分类： | 电子学 >> 集成电路、微电子学 |
| 替代情况： | GB 4376-1984 |
| 发布部门： | 国家技术监督局 |
| 发布日期： | 1994-08-08 |
| 实施日期： | 1995-04-01 |
| 首发日期： | 1984-05-13 |
| 作废日期： | 1900-01-01 |
| 主管部门： | 信息产业部（电子） |
| 归口单位： | 全国半导体器件标准化技术委员会 |
| 起草单位： | 全国集成电路标委会模拟分会 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 1900-01-01 |
| 页数： | 【胶订-大印张】平装16开， 页数：83， 字数：164千字 |
适用范围
本标准规定了半导体集成电路电压调整器的系列和品种，并给出了每一品种的引出端排列、推荐线路或功能框图及主要电参数。本标准适用于器件的生产、研制或使用时的选型。
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 电子元器件与信息技术 微电路 半导体集成电路 电子学 集成电路 微电子学
