SAE AMSI7068 Ingot, Zinc Alloy (For Sheet Metal Forming Dies)
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来源:标准资料网
Product Code:SAE AMSI7068
Title:Ingot, Zinc Alloy (For Sheet Metal Forming Dies)
Issuing Committee:Ams D Nonferrous Alloys Committee
Scope:This specification addresses requirements for a zinc alloy used in the production of sand cast forming dies for sheet metal stamping operations.
基本信息
| 标准名称： | 棉布单位产量综合能耗计算方法及限额 |
| 替代情况： | 替代DBl2/T 046.29-1994 |
| 发布日期： | 2008-01-21 |
| 实施日期： | 2008-03-01 |
| 首发日期： | |
| 作废日期： | |
| 主管部门： | 天津市质量技术监督局 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 2008-03-01 |
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： 农业 林业 经济作物 瓜果 蔬菜种植与产品 食品技术 水果 蔬菜及其制品
【英文标准名称】:StandardTestMethodfor(AnalyticalProcedure)forDeterminingTransmissivityandStorageCoefficientofConfinedNonleakyorLeakyAquiferbyConstantDrawdownMethodinFlowingWell
【原文标准名称】:在自流井中用恒定水位降低法测定固定不漏或含水土层泄露比和储水系数(分析程序)的标准试验方法
【标准号】:ASTMD5855-1995(2006)
【标准状态】:现行
【国别】:
【发布日期】:1995
【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】:D18.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:含水土层;地下水;试验;井的建造;井
【英文主题词】:aquifers;aquifertests;controlwells;groundwater;observationwells;storagecoefficient;transmissivity
【摘要】:Assumptionsx2014;LeakyAquifer:5.1.1Drawdown(sW)inthecontrolwellisconstant,5.1.2Wellisinfinitesimaldiameterandfullypenetratesaquifer,5.1.3Theaquiferishomogeneous,isotropic,andareallyextensive,and5.1.4Thecontrolwellis100%efficient.Assumptionsx2014;NonleakyAquifer:5.2.1Drawdown(sW)inthecontrolwellisconstant,5.2.2Wellisinfinitesimaldiameterandfullypenetratesaquifer,5.2.3Theaquiferishomogeneous,isotropic,andareallyextensive,5.2.4Dischargefromthewellisderivedexclusivelyfromstorageinthenonleakyaquifer,and5.2.5Thecontrolwellis100%efficient.ImplicationsofAssumptions:5.3.1Theassumptionsareapplicabletoconfinedaquifersandfullypenetratingcontrolwells.However,thistestmethodmaybeappliedtopartiallypenetratingwellswherethemethodmayprovideanestimateofhydraulicconductivityfortheaquiferadjacenttotheopenintervalofthewellifthehorizontalhydraulicconductivityissignificantlygreaterthantheverticalhydraulicconductivity.5.3.2Valuesobtainedforstoragecoefficientarelessreliablethanthevaluescalculatedfortransmissivity.Storagecoefficientvaluescalculatedfromcontrolwelldataarenotreliable.1.1Thistestmethodcoversananalyticalsolutionfordeterminingtransmissivityandstoragecoefficientofaleakyornonleakyconfinedaquifer.Itisusedtoanalyzedataontheflowratefromacontrolwellwhileaconstantheadismaintainedinthewell.1.2ThisanalyticalprocedureisusedinconjunctionwiththefieldprocedureinPracticeD5786.1.3Limitations-Thelimitationsofthistechniqueforthedeterminationofhydraulicpropertiesofaquifersareprimarilyrelatedtothecorrespondencebetweenfieldsituationandthesimplifyingassumptionofthesolution.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P13;A42
【国际标准分类号】:13_060_10
【页数】:5P.;A4
【正文语种】:
