Product Code:SAE AMS7847
Title:Tantalum Alloy Sheet, Strip, and Plate, 90Ta - 10W
Issuing Committee:Ams G Titanium And Refractory Metals Committee
Scope:This specification covers a tantalum alloy in the form of sheet, strip, and plate.
基本信息
| 标准名称： | 电气装置安装工程 质量检验及评定规程 第8部分：盘、柜及二次回路结线施工质量检验 |
| 英文名称： | Specification for construction quality checkout and evaluation of electric equipment installation Part 8:Switchboard outfit complete cubicle and secondary circuit |
| 中标分类： |
工程建设 >>
电力、核工业工程 >>
发电站工程 |
| ICS分类： |
能源和热传导工程 >>
电站综合
|
| 发布部门： | 中华人民共和国国家经济贸易委员会 |
| 发布日期： | 2002-09-16 |
| 实施日期： | 2002-12-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 提出单位： | 国电电力建设研究所 |
| 归口单位： | 国电电力建设研究所 |
| 起草单位： | 国电电力建设研究所 |
| 起草人： | 周南荣、陈桂英、陈发宇、郑凯、董刚 |
| 出版社： | 中国电力出版社 |
| 出版日期： | 2002-12-01 |
| 页数： | 10页 |
适用范围
本章适用于高压成套柜、低压配电盘、控制及保护屏台基础的安装。
前言
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目录
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引用标准
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所属分类： 工程建设 电力 核工业工程 发电站工程 能源和热传导工程 电站综合
【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】: