SAE AMS3338 Silicone (PVMQ) Rubber, Extreme-Low-Temperature Resistant, 75 - 85
时间:2024-05-13 17:27:12 来源: 标准资料网 作者：标准资料网 阅读：9556
Product Code:SAE AMS3338
Title:Silicone (PVMQ) Rubber, Extreme-Low-Temperature Resistant, 75 - 85
Issuing Committee:Ams Ce Elastomers Committee
Scope:This specification covers a silicone (PVMQ) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes. Primarily for parts required to operate or seal from -85 to +230 degrees C (-121 to +446 degrees F), compounded especially for operation at extreme low temperatures. Silicone rubber is resistant to deterioration by weathering and by high-aniline-point petroleum-base oils and remains flexible over the temperature range noted. These products are not normally suitable for use in contact with low-aniline-point petroleum-base fluids, including fuels, due to excessive swelling.
【英文标准名称】:Industrial-processcontrolvalves.Noiseconsiderations.Controlvalveaerodynamicnoisepredictionmethod
【原文标准名称】:工业过程控制阀.噪声问题.控制阀的气动噪声预测法
【标准号】:BSEN60534-8-3-2011
【标准状态】:现行
【国别】:英国
【发布日期】:2011-06-30
【实施或试行日期】:2011-06-30
【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】:
【英文主题词】:Acousticmeasurement;Aerodynamicflow;Airbornenoise;Controlvalves;Correctingunits;Definitions;Direction-controlvalves;Electricalengineering;Fluidengineering;Laboratorytesting;Laboratorytests;Liquidflow;Mathematicalcalculations;Measurement;Measurementofairbornenoise;Measuringtechniques;Methodsofcalculation;Noise;Noiseemissions;Noisemeasurements;Pipelines;Processcontrol;Processmeasuringandcontroltechnology;Soundpressurelevel;Testing;Valves
【摘要】:ThispartofIEC60534establishesatheoreticalmethodtopredicttheexternalsoundpressurelevelgeneratedinacontrolvalveandwithinadjacentpipeexpandersbytheflowofcompressiblefluids.Thismethodconsidersonlysingle-phasedrygasesandvapoursandisbasedontheperfectgaslaws.Thisstandardaddressesonlythenoisegeneratedbyaerodynamicprocessesinvalvesandintheconnectedpiping.Itdoesnotconsideranynoisegeneratedbyreflectionsfromexternalsurfacesorinternallybypipefittings,mechanicalvibrations,unstableflowpatternsandotherunpredictablebehaviour.Itisassumedthatthedownstreampipingisstraightforalengthofatleast2mfromthepointwherethenoisemeasurementismade.Thismethodisvalidonlyforsteelandsteelalloypipes(seeEquations(21)and(23)in5.5).Themethodisapplicabletothefollowingsingle-stagevalves:globe(straightpatternandanglepattern),butterfly,rotaryplug(eccentric,spherical),ball,andvalveswithcagetrims.SpecificallyexcludedarethefullboreballvalveswheretheproductFpCexceeds50%oftheratedflowcoefficient.Forlimitationsonspeciallownoisetrimsnotcoveredbythisstandard,seeClause8.WhentheMachnumberinthevalveoutletexceeds0,3forstandardtrimor0,2forlownoisetrim,theprocedureinClause7isusedTheMachnumberlimitsinthisstandardareasfollows:
【中国标准分类号】:J16
【国际标准分类号】:17_140_20;23_060_40;25_040_40
【页数】:52P.;A4
【正文语种】:英语
【英文标准名称】:Earth-movingmachinery-Loaders-Terminologyandcommercialspecifications.
【原文标准名称】:土方机械.装载机.术语和商业规范
【标准号】:NFE58-006/A1-2003
【标准状态】:作废
【国别】:法国
【发布日期】:2003-11-01
【实施或试行日期】:2003-11-05
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:术语;定义;词汇;装料机;土方机械;装载机
【英文主题词】:Definitions;Earth-movingequipment;Loaders;Terminology;Vocabulary
【摘要】:
【中国标准分类号】:P97
【国际标准分类号】:01_040_53;53_100
【页数】:6P.;A4
【正文语种】:其他