HB 518-1989 垫块
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基本信息
| 标准名称： | 垫块 |
| 中标分类： | 航空、航天 >> 航空器与航天器制造用设备 >> 夹具 |
| 替代情况： | HB 518-74 |
| 发布日期： | 1989-05-13 |
| 实施日期： | 1989-12-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 1页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 航空 航天 航空器与航天器制造用设备 夹具
下载地址: 点击此处下载
【英文标准名称】:StandardPracticeforLaboratoryScreeningofMetallicContainmentMaterialsforUseWithLiquidsinSolarHeatingandCoolingSystems
【原文标准名称】:太阳能加热和制冷系统中贮存液体用金属容器材料的实验室遮蔽的标准实施规程
【标准号】:ASTME712-1980(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1980
【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】:E44.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:corrosion;deterioration;highpressure;immersion;metalliccontainmentmaterials;solarcollector;solarheatingandcooling;Containmentsystems/applications;Corrosion--metals/alloys;Corrosion--solardevices;Crevicecorrosion;Deterioration;D
【摘要】:Atthistime,noneofthesetestshasbeendemonstratedtocorrelatewithfieldservice.Itisessentialthatconsiderationbegiventotheappropriatepairingofmetalandfluidsincetheseproceduresdonotrestricttheselectionofeitherthecontainmentmaterialorthefluidfortesting.Likewise,knowledgeofthecorrosionprotectionmechanismandtheprobablemodeoffailureofaparticularmetalishelpfulintheselectionoftestconditionsandtheobservation,interpretation,andreportingoftestresults.Thedesignofsolarheatingandcoolingsystemsstronglyaffectstheapplicabilityoftheresultsofthelaboratoryscreeningtests.Therefore,theresultsoftheselaboratoryproceduresshouldbeconfirmedbycomponentandsystemstestingunderactualorsimulatedserviceconditions.Table1isprovidedtoassistinanorderlyconsiderationoftheimportantfactorsintesting.Itisexpectedthattheuserofthetestprocedurewillinvestigatearangeoftesttimesandtemperaturesforthecontainmentmaterialinametal/fluidpair,andadjustthetimeandtemperatureoftestingasnecessary.Note18212;Corrosion,whethergeneralorlocalized,isatime-dependentphenomenon.Thistimedependencecanshowsubstantialnonlinearity.Forexample,formationofaprotectiveoxidewilldiminishcorrosionwithtime,whilecertainformsoflocalizedattackacceleratewithtime.Theminimumtimerequiredforatesttoprovideacorrosionratethatcanbeextrapolatedforthepredictionoflong-termperformancevarieswidely,dependingontheselectionofmetalandfluid,andontheformofcorrosionattack.Therefore,itisnotpossibletoestablishasingleminimumlengthoftestapplicabletoallmaterialsandconditions.However,itisrecommendedthatforthetestsdescribedinthispractice,atestperiodofnolessthan30daysbeused.Furthermore,itisrecommendedthattheeffectoftimeoftestingbeevaluatedtodetectanysignificanttimedependenceofcorrosionattack.Itisessentialforthemeaningfulapplicationoftheseproceduresthatthelengthofthetestbeadequatetodetectchangesinthenatureofthefluidthatmightsignificantlyalterthecorrosivityofthefluid.Forexample,exhaustionofchemicalinhibitororchemicalbreakdownofthefluidmayoccurafterperiodsofmonthsinselectedcyclesofoperation.Note28212;Manyfluidsthatmaybeconsideredforsolarapplicationscontainadditivestominimizethecorrosivityofthefluid.Manysuchadditivesareusefulonlywithinaspecificconcentrationrange,andsomeadditivesmayactuallyacceleratecorrosioniftheconcentrationfallsbelowacriticallevel.Depletionkineticscanbeastrongfunctionoftheexposedmetalsurfacearea.Therefore,fortestsinvolvingfluidswithsuchadditives,considerationmustbegiventotheratioofmetalsurfaceareatofluidvolumeasitmayrelatetoanoperatingsystem.TABLE1SignificantVariablesinEvaluationofContainmentMaterial/HeatTransferFluidPairsATestAspectVariableTemperatureFlowRateI.
OperatingConditionsofSystem:
A.Operating,fullflo........
【中国标准分类号】:A82
【国际标准分类号】:77_040_99
【页数】:8P.;A4
【正文语种】:英语
【原文标准名称】:太阳能加热和制冷系统中贮存液体用金属容器材料的实验室遮蔽的标准实施规程
【标准号】:ASTME712-1980(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1980
【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】:E44.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:corrosion;deterioration;highpressure;immersion;metalliccontainmentmaterials;solarcollector;solarheatingandcooling;Containmentsystems/applications;Corrosion--metals/alloys;Corrosion--solardevices;Crevicecorrosion;Deterioration;D
【摘要】:Atthistime,noneofthesetestshasbeendemonstratedtocorrelatewithfieldservice.Itisessentialthatconsiderationbegiventotheappropriatepairingofmetalandfluidsincetheseproceduresdonotrestricttheselectionofeitherthecontainmentmaterialorthefluidfortesting.Likewise,knowledgeofthecorrosionprotectionmechanismandtheprobablemodeoffailureofaparticularmetalishelpfulintheselectionoftestconditionsandtheobservation,interpretation,andreportingoftestresults.Thedesignofsolarheatingandcoolingsystemsstronglyaffectstheapplicabilityoftheresultsofthelaboratoryscreeningtests.Therefore,theresultsoftheselaboratoryproceduresshouldbeconfirmedbycomponentandsystemstestingunderactualorsimulatedserviceconditions.Table1isprovidedtoassistinanorderlyconsiderationoftheimportantfactorsintesting.Itisexpectedthattheuserofthetestprocedurewillinvestigatearangeoftesttimesandtemperaturesforthecontainmentmaterialinametal/fluidpair,andadjustthetimeandtemperatureoftestingasnecessary.Note18212;Corrosion,whethergeneralorlocalized,isatime-dependentphenomenon.Thistimedependencecanshowsubstantialnonlinearity.Forexample,formationofaprotectiveoxidewilldiminishcorrosionwithtime,whilecertainformsoflocalizedattackacceleratewithtime.Theminimumtimerequiredforatesttoprovideacorrosionratethatcanbeextrapolatedforthepredictionoflong-termperformancevarieswidely,dependingontheselectionofmetalandfluid,andontheformofcorrosionattack.Therefore,itisnotpossibletoestablishasingleminimumlengthoftestapplicabletoallmaterialsandconditions.However,itisrecommendedthatforthetestsdescribedinthispractice,atestperiodofnolessthan30daysbeused.Furthermore,itisrecommendedthattheeffectoftimeoftestingbeevaluatedtodetectanysignificanttimedependenceofcorrosionattack.Itisessentialforthemeaningfulapplicationoftheseproceduresthatthelengthofthetestbeadequatetodetectchangesinthenatureofthefluidthatmightsignificantlyalterthecorrosivityofthefluid.Forexample,exhaustionofchemicalinhibitororchemicalbreakdownofthefluidmayoccurafterperiodsofmonthsinselectedcyclesofoperation.Note28212;Manyfluidsthatmaybeconsideredforsolarapplicationscontainadditivestominimizethecorrosivityofthefluid.Manysuchadditivesareusefulonlywithinaspecificconcentrationrange,andsomeadditivesmayactuallyacceleratecorrosioniftheconcentrationfallsbelowacriticallevel.Depletionkineticscanbeastrongfunctionoftheexposedmetalsurfacearea.Therefore,fortestsinvolvingfluidswithsuchadditives,considerationmustbegiventotheratioofmetalsurfaceareatofluidvolumeasitmayrelatetoanoperatingsystem.TABLE1SignificantVariablesinEvaluationofContainmentMaterial/HeatTransferFluidPairsATestAspectVariableTemperatureFlowRateI.
OperatingConditionsofSystem:
A.Operating,fullflo........
【中国标准分类号】:A82
【国际标准分类号】:77_040_99
【页数】:8P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 非金属垫片材料分类体系及试验方法 第9部分:软木垫片材料胶结物耐久性试验方法 |
| 英文名称： | Classification system and test methods for nonmetallic gasket materials - Part 9: Standard test method for binder durability of cork composition gasket materials |
| 中标分类： | 建材 >> 其他非金属矿制品 >> 石棉材料 |
| ICS分类： | |
| 发布部门： | 中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会 |
| 发布日期： | 2007-03-26 |
| 实施日期： | 2007-07-01 |
| 首发日期： | 2006-12-07 |
| 作废日期： | |
| 主管部门： | 中国建筑材料工业协会 |
| 提出单位： | 中国建筑材料工业协会 |
| 归口单位： | 咸阳非金属矿研究设计院 |
| 起草单位： | 咸阳非金属矿研究设计院、建筑材料工业技术监督研究中心、烟台石川密封垫板有限公司等 |
| 起草人： | 尚兴春、刘武强、姜寿松、吴益民、潘洲、高冠英等 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 2007-07-01 |
| 页数： | 8页 |
| 计划单号： | 20065133-T-609 |
适用范围
本试验方法规定了测定含软木材料的胶结物耐久性的三种方法。
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 建材 其他非金属矿制品 石棉材料