DIN 13 T.12-1988 ISO米制螺纹.螺纹直径1至300mm的粗牙螺纹和细牙螺纹.直径和螺距的选择

上一篇: DIN 1732 T.1-1988 铝和铝合金用焊接填充金属.成份.应用及供货技术条件
下一篇: DIN 3352 T.3-1988 用致密结构金属铸造的有外轴螺纹的滑阀

【英文标准名称】:Steelsforcoldheadingandcoldextruding
【原文标准名称】:冷镦或冷挤压加工用钢材
【标准号】:JISG7401-2000
【标准状态】:现行
【国别】:日本
【发布日期】:2000-07-20
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonIronandSteel
【标准类型】:()
【标准水平】:()
【中文主题词】:产品规范;挤压;冷加工;钢;滚轧
【英文主题词】:steels;cold-working;rolling;extruding;productspecification
【摘要】:この規格は,冷間圧造又は冷間押出しに用いられる線材,線又は棒鋼で受け渡される非合金及ぴ合金の鋼材に適用する。この規格は次の各項目について規定する五つの項で構成されている。
【中国标准分类号】:H40
【国际标准分类号】:77_140_10;77_140_20
【页数】:37P;A4
【正文语种】:日语


【英文标准名称】:StandardTestMethodforDeterminationofSurfaceRoughnessbyScanningTunnelingMicroscopyforGasDistributionSystemComponents
【原文标准名称】:用扫描隧道显微术法测定气体分配系统元件的表面粗糙度的测试方法
【标准号】:ASTMF1438-1993(2005)
【标准状态】:现行
【国别】:
【发布日期】:1993
【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】:F01.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:显微术;试验;管道工程系统;气体分配;表面粗糙度
【英文主题词】:Gasdistributionsystems;Microscopicexamination-electronicmaterials;Roughness;Scanningtunnelingmicroscopy;Semiconductorcleanrooms;Stainlesssteel-gasdistributionsystems;Surfaceanalysis-electroniccomponents/devices;Texture;Topogra
【摘要】:TheuseofSTMimagesanddataisforpurposesoftexturalqualityassessmentandcalculationoffiguresofmerit,andforhighpuritygassystemcleanroomcomponents.ThistestmethoddefinesastandarddatapresentationformatandsuggestsfiguresofmeritthatutilizeSTMrsquo;abilitytoanalyzethree-dimensionalsurfacefeatures.1.1Thepurposeofthistestmethodistodefineamethodforanalyzingthesurfacetextureoftheabove-mentionedcomponentsusingascanningtunnelingmicroscope(STM).STMisanoncontactmethodofsurfaceprofilingthatcanmeasurethree-dimensionalsurfacefeaturesinthenanometersizerange,whichcanthenbeusedtorepresentthesurfacetextureortoprovidefiguresofmerit.Applicationofthistestmethod,wheresurfacetextureisusedasaselectioncriterion,isexpectedtoyieldcomparabledataamongdifferentcomponentstested.1.2Limitations:1.2.1ThistestmethodislimitedtocharacterizationofstainlesssteelsurfacesthataresmootherthanRa=0.25[mu]m,asdeterminedbyacontact-stylusprofilometeranddefinedbyANSIB46.1.Themagnificationsandheightscalesusedinthistestmethodwerechosenwiththissmoothnessinmind.1.2.2Intentionaletchingorconductivecoatingofthesurfaceareconsideredmodificationsofthegas-wettedsurfaceandarenotcoveredbythistestmethod.1.2.3Thistestmethoddoesnotcoversteelsthathaveanoxidelayertoothicktopermittunnelingunderthetestconditionsoutlinedin11.3.1.3ThistechniqueiswrittenwiththeassumptionthattheSTMoperatorunderstandstheuseoftheinstrument,itsgoverningprinciples,andanyartifactsthatcanarise.Discussionofthesepointsisbeyondthescopeofthistestmethod.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J04
【国际标准分类号】:17_040_20
【页数】:10P.;A4
【正文语种】: