ANSI/ASTM D4814-2008 汽车火花点燃式发动机燃料规范
作者:标准资料网 时间:2024-05-10 18:39:10 浏览:8451
来源:标准资料网
【英文标准名称】:SpecificationforAutomotiveSpark-IgnitionEngineFuel
【原文标准名称】:汽车火花点燃式发动机燃料规范
【标准号】:ANSI/ASTMD4814-2008
【标准状态】:作废
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:汽车;机动车工程;机动车燃料;燃料;点火;液体燃料;汽油发动机;火花点火;火花点火发动机;规范
【英文主题词】:Automobiles;Automotiveengineering;Automotivefuels;Fuels;Ignition;Liquidfuels;Petrolengines;Sparkignitions;Spark-ignitionengines;Specification
【摘要】:
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:
【正文语种】:英语
基本信息
标准名称: | 食品添加剂 藻酸丙二醇酯 |
英文名称: | Food additive-Propylene glycol alginate |
中标分类: |
食品 >>
食品添加剂与食用香料 >>
合成食品添加剂 |
ICS分类: |
食品技术 >>
香料和调料、食品添加剂 >>
食品添加剂
|
替代情况: | 被GB 10616-2004代替 |
发布日期: | 1989-03-22 |
实施日期: | 1990-02-01 |
首发日期: | 1989-03-22 |
作废日期: | 2004-12-01 |
归口单位: | 中国石油和化学工业协会 |
起草单位: | 青岛海洋化工厂 |
出版日期: | 1900-01-01 |
页数: | 5页 |
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: 食品 食品添加剂与食用香料 合成食品添加剂 食品技术 香料和调料 食品添加剂 食品添加剂
【英文标准名称】:StandardPracticeforElectromagnetic(Eddy-Current)ExaminationofFerromagneticCylindricalBarProductAbovetheCurieTemperature
【原文标准名称】:居里温度以上铁磁圆柱棒产品的电磁(涡流)检验
【标准号】:ASTME1312-1999(2004)e1
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:E07.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:涡流试验;试验;材料试验
【英文主题词】:artificialdiscontinuity;curietemperature;electricaltransientnoise;electronicallygeneratedsignal;encirclingcoil;ferromagneticcylindricalbar;fluxchange;in-line-eddy-currentexamination;magneticorelectrostaticshield;phase;sensorcoil;signalamplitude;suppressioncircuit;systemreliability;transportmechanism
【摘要】:Thepurposeofthispracticeistodescribeaprocedureforin-line-eddy-currentexaminationofhotcylindricalbarsintherangeofdiameterslistedin1.2forlargeandrepetitivediscontinuitiesthatmayformduringprocessing.Thediscontinuitiesinbarproductcapableofbeingdetectedbytheelectromagneticmethodarelistedin1.3.1.Themethodiscapableofdetectingsurfaceandsomesubsurfacediscontinuitiesthataretypicallyintheorderof0.030in.[0.75mm]anddeeper,butsomeshallowerdiscontinuitiesmightalsobefound.Discontinuitiesthatarenarrowanddeep,butshortinlength,arereadilydetectablebybothprobeandencirclingcoilsbecausetheycauseabruptfluxchanges.Surfaceandsubsurfacediscontinuities(iftheelectromagneticfrequencyprovidessufficienteffectivedepthofpenetration)canbedetectedbythismethod.5.3.1Discontinuitiessuchasscratchesorseamsthatarecontinuousanduniformforthefulllengthofcutlengthbarsorextendforextensivelineardistancesincoiledproductmaynotalwaysbedetectedwhenencirclingcoilsareused.Thesearemoredetectablewithprobecoilsbyinterceptingthediscontinuityintheirrotationaroundthecircumference.5.3.2Theorientationandtypeofcoilareimportantparametersincoildesignbecausetheyinfluencethedetectabilityofdiscontinuities.Theeddycurrentmethodissensitivetometallurgicalvariationsthatoccurasaresultofprocessing,thusallreceivedsignalsabovethealarmlevelarenotnecessarilyindicativeofdefectiveproduct.1.1Thispracticecoversproceduresforeddy-currentexaminationofhotferromagneticbarsabovetheCurietemperaturewheretheproductisessentiallynonmagnetic,butbelow2100F[1149C].1.2Thispracticeisintendedforuseonbarproductshavingdiametersof1/2in.[12.7mm]to8in.[203mm]atlinearthroughputspeedsupto1200ft/min[366m/min].Largerorsmallerdiametersmaybeexaminedbyagreementbetweentheusingparties.1.3Thepurposeofthispracticeistoprovideaprocedureforin-lineeddy-currentexaminationofbarsduringprocessingforthedetectionofmajororgrosssurfacediscontinuities.1.3.1Thetypesofdiscontinuitiescapableofbeingdetectedarecommonlyreferredtoas:slivers,laps,seams,roll-ins(scale,dross,andsoforth),andmechanicaldamagesuchasscratches,scores,orindentations.1.4Thispracticedoesnotestablishacceptancecriteria.Theymustbespecifiedbyagreementbetweentheusingparties.1.5Thispracticedoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthispracticetoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H40
【国际标准分类号】:
【页数】:3P.;A4
【正文语种】: