基本信息
| 标准名称： | 锤上钢质自由锻件机械加工余量与公差 光轴类 |
| 英文名称： | Machining allowances and tolerances for steel open die forgings on hammer-Shaft without steps |
| 中标分类： |
机械 >>
加工工艺 >>
锻压 |
| ICS分类： |
|
| 替代情况： | 替代JB 4249-1986;被GB/T 21471-2008代替 |
| 发布部门： | 中国机械工业联合会 |
| 发布日期： | 1995-01-02 |
| 实施日期： | 1996-08-01 |
| 首发日期： | 1995-12-14 |
| 作废日期： | 2008-08-01 |
| 主管部门： | 中国机械工业联合会 |
| 归口单位： | 全国锻压标准化技术委员会 |
| 起草单位： | 上海市机电工业管理局 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 1900-01-01 |
| 页数： | 2页 |
适用范围
本标准规定了圆形、方形、六角形、八角形、矩形(B/H≤5)截面的光轴类自由锻件的机械加工余量与公差。 本标准适用于零件尺寸L＞2.5D(或A，B，S)的光轴类自由锻件。
前言
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目录
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引用标准
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所属分类： 机械 加工工艺 锻压
【英文标准名称】:StandardGuideforConductingBoreholeGeophysicalLogging-Gamma
【原文标准名称】:进行钻孔地球物理岩芯记录-γ的标准指南
【标准号】:ASTMD6274-1998(2004)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:D18.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:天然γ岩芯记录;核统计学;井建造;井测量;钻孔地球物理学;中止时间校正;γ岩芯记录
【英文主题词】:boreholegeophysics;deadtimecorrection;gammalog;naturalgammalog;nuclearstatistics;radioisotope;wellconstruction;welllogging
【摘要】:Anappropriatelydeveloped,documented,andexecutedguideisessentialforthepropercollectionandapplicationofgammalogs.ThisguideistobeusedinconjunctionwithGuideD5753.Thebenefitsofitsuseincludeimprovingselectionofgammaloggingmethodsandequipment,gammalogqualityandreliability,andusefulnessofthegammalogdataforsubsequentdisplayandinterpretation.Thisguideappliestocommonlyusedgammaloggingmethodsforgeotechnicalapplications.Itisessentialthatpersonnel(seethePersonnelsectionofGuideD5753)consultup-to-datetextbooksandreportsonthegammatechnique,application,andinterpretationmethods.1.1Thisguidecoversthegeneralproceduresnecessarytoconductgamma,naturalgamma,totalcountgamma,orgammaray(hereafterreferredtoasgamma)loggingofboreholes,wells,accesstubes,caissons,orshafts(hereafterreferredtoasboreholes)ascommonlyappliedtogeologic,engineering,ground-waterandenvironmental(hereafterreferredtoasgeotechnical)investigations.Spectralgammaandloggingwheregammameasurementsaremadeinconjunctionwithanuclearsourceareexcluded(forexample,neutronactivationandgamma-gammadensitylogs).Gammaloggingformineralorpetroleumapplicationsareexcluded.1.2Thisguidedefinesagammalogasarecordofgammaactivityoftheformationadjacenttoaboreholewithdepth(SeeFig.1).1.2.1Gammalogsarecommonlyusedto:delineatelithology,correlatemeasurementsmadeondifferentloggingruns,anddefinestratigraphiccorrelationbetweenboreholes(SeeFig.2).1.3Thisguideisrestrictedtogammaloggingwithnuclearcountersconsistingofscintillationdetectors(crystalscoupledwithphotomultipliertubes),whicharethemostcommongammameasurementdevicesusedingeotechnicalapplication.1.4Thisguideprovidesanoverviewofgammaloggingincluding:generalprocedures;specificdocumentation;calibrationandstandardization,andlogqualityandinterpretation.1.5ToobtainadditionalinformationongammalogsseeSection13.1.6ThisguideistobeusedinconjunctionwithGuideD5753.1.7Gammalogsshouldbecollectedbyanoperatorthatistrainedingeophysicalloggingprocedures.Gammalogsshouldbeinterpretedbyaprofessionalexperiencedinloganalysis.1.8ThegeotechnicalindustryusesEnglishorSIunits.Thegammalogistypicallyrecordedinunitsofcountspersecond(cps)orAmericanPetroleumInstitute(API)units.Thisguidedoesnotpurporttoaddressallofthesafetyandliabilityproblems(forexample,lostorlodgedprobesandequipmentdecontamination)associatedwithitsuse.1.10Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.11Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisdocumentcannotreplaceeducationorjudgment.Notallaspectsofthisguidemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepresentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshouldthisdocumentbeappliedwithoutconsiderationofaproject''smanyuniqueaspects.Theword"Standard"inthetitleofthisdocumentmeansonlythatthedocumenthasbeenapprovedthroughtheASTMconsensusprocess.
【中国标准分类号】:E11
【国际标准分类号】:17_040_99
【页数】:11P.;A4
【正文语种】: