QJ 1000.125-1986 机床夹具零件及部件工艺卡片 低支脚
作者:标准资料网 时间:2024-05-17 06:31:39 浏览:9844
来源:标准资料网
基本信息
| 标准名称： | 机床夹具零件及部件工艺卡片 低支脚 |
| 发布日期： | 1986-06-21 |
| 实施日期： | 1986-10-01 |
| 首发日期： | |
| 作废日期： | 1995-04-21 |
| 出版日期： | |
| 页数： | 1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： 机械制造 表面处理和涂覆 表面预处理
【英文标准名称】:Solidcarbideparallelshankstubdrills
【原文标准名称】:固体硬质合金直柄短钻头
【标准号】:JISB4117-1991
【标准状态】:作废
【国别】:日本
【发布日期】:1991-08-01
【实施或试行日期】:1991-08-01
【发布单位】:日本工业标准调查会(JISC)
【起草单位】:FactoryAutomation
【标准类型】:()
【标准水平】:()
【中文主题词】:切削工具;硬质合金刀具;钻头
【英文主题词】:drills;cuttingtools;carbidetools
【摘要】:
【中国标准分类号】:L22
【国际标准分类号】:25_100_30
【页数】:12P;A4
【正文语种】:日语
【英文标准名称】:TestMethodforPerformanceTestingofExcessFlowValves
【原文标准名称】:溢流阀性能试验的试验方法
【标准号】:ANSI/ASTMF1802-2004
【标准状态】:现行
【国别】:美国
【发布日期】:2004-05-27
【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】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:溢流阀;试验方法;阀门
【英文主题词】:Overflowvalves;Testmethods;Valves
【摘要】:Thistestmethodcoversastandardizedmethodtodeterminetheperformanceofexcessflowvalves(EFVs)designedtolimitfloworstopflowinthermoplasticnaturalgasservicelines.Alltestsareintendedtobeperformedusingairasthetestfluid.Unlessotherwisestated,allflowratesarereportedinstandardcubicfeetperhourof0.6relativedensitynaturalgas.ThetestmethodrecognizestwotypesofEFV.Onetype,anexcessflowvalve-bypass(EFVB),allowsasmallamountofgastobleedthrough(bypass)afterithastripped,usuallyasameansofautomaticallyresettingthedevice.Thesecondtype,anexcessflowvalve-nonbypass(EFVNB),isintendedtotripshutforminganessentiallygastightseal.Theperformancecharacteristicscoveredinthistestmethodincludeflowattrippoint,pressuredropacrosstheEFV,bypassflowrateoftheEFVBorleakratethroughtheEFVNBaftertrip,andverificationthattheEFVcanbereset.Gasdistributionsystemsmaycontaincondensatesandparticulatessuchasorganicmatter,sand,dirt,andironcompounds.FieldexperiencehasshownthattheoperatingcharacteristicsofsomeEFVsmaybeaffectedbyaccumulationsofthesematerials.ThetestsofSectionweredevelopedtoprovideasimple,inexpensive,reproducibletestthatquantifiestheeffect,ifany,ofauniformcoatingofkeroseneandofkerosenecontaminatedwithaspecifiedamountofferricoxidepowderonanEFV'soperatingcharacteristics.Excessflowvalvescoveredbythistestmethodwillnormallyhavethefollowingcharacteristics:apressureratingofupto125psig(0.86MPa);atripflowofbetween200and2500ft/h(5.66and70.8m/h)at10psig(0.07MPa);aminimumtemperatureratingof0F(-18C),andamaximumtemperatureratingof100F(38C).TheEFVscoveredbythistestmethodshallbeconstructedtofitpipingsystemsnosmallerthan1/2CTSandnolargerthan11/4IPS,includingbothpipeandtubingsizes.Testswillbeperformedat6710F(19.45.5C).Alternativeoptionaltesttemperaturesare10010F(37.75.5C)and010F(-185.5C).Allflowratesmustbecorrectedtostandardconditions.ThistestmethodwaswrittenforEFVsinstalledinthermoplasticpipingsystems.However,itisexpectedthatthetestmethodmayalsobeusedforsimilardevicesinotherpipingsystems.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautions,seeSection.
【中国标准分类号】:J16
【国际标准分类号】:23_060_10
【页数】:
【正文语种】:英语
