基本信息
| 标准名称： | 煤矿生产调度自动交换电话总机通用技术条件 |
| 中标分类： |
矿业 >>
矿山机械设备 >>
煤矿专用设备器材 |
| 发布部门： | 中华人民共和国煤炭工业部 |
| 发布日期： | 1995-08-25 |
| 实施日期： | 1995-11-01 |
| 首发日期： | |
| 作废日期： | |
| 提出单位： | 煤炭工业部煤矿专用设备标准化技术委员会 |
| 归口单位： | 煤矿专用设备标准化技术委员会通信监控设备分会 |
| 起草单位： | 煤炭科学研究总院常州自动化研究所 |
| 起草人： | 沈世庄、彭霞、何年春 |
| 出版社： | 中国煤炭工业出版社 |
| 出版日期： | 1995-11-01 |
| 页数： | 21页 |
适用范围
本标准规定了煤矿生产调度自动交换电话总机的产品分类、技术要求、试验方法、检验规则、标志、包装、运输及贮存。
本标准适用于通过拨号或按键控制操作以自动接续方式实现交换，并能进行全矿井生产调度指挥的煤矿生产调度自动交换电话总机(以下简称自动调度交换总机)。
前言
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目录
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引用标准
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所属分类： 矿业 矿山机械设备 煤矿专用设备器材
【英文标准名称】:StandardGuideforTestingMaterialsforAerospacePlasticTransparentEnclosures
【原文标准名称】:航空航天塑料透明外壳用试验材料的标准规范
【标准号】:ASTMF790-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:F07.08
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:abrasion;acrylic;adhesion;aerospace;bonding;electrical;enclosures;environmental;impact;interlayers;materials;mechanical;optical;physical;plastic;polycarbonate;properties;thermal;transparent;Acrylicplastics;Aerospacetra
【摘要】:Thisguideisintendedforusebymaterialsuppliers,aircrafttransparentenclosurefabricators,air-framemanufacturers,governmentagencies,andothersthatmaybecomeinvolvedinthetestingoftransparencycomponents.Thesetestmethodsprovidedataonbothindividualmaterialsandmaterialcombinationscommonlyutilizedinthefabricationsofaerospacetransparentenclosurescomprisedofmonolithicplastic,coatedmonolithicplasticorlaminatedconstructionscontainingplastics.Primarypropertiesandtheirlongtermstabilityarecriticaltotheperformanceofaerospacetransparentenclosures.Propertymeasurementtestsdefineas-manufacturedmaterialpropertiesofthesematerials.Agingproceduresprovideforexposureofpartsorrepresentativesectionstoenvironmentsthatmayinducechangesinmaterialpropertiesasdeterminedinpropertymeasurementtests.Propertymeasurementtestsperformedbeforeandafteragingexposureprovideameansofestimatingthepotentialusablelifespanofatransparencyortocomparethedurabilityofonematerialwithanother.Whenemployingthesetestmethodsforcomparisonofmaterialsforweatheringeffectstheusershouldbeawarethatthemanyfactorsinfluencingdegradationduetoweatheringvaryfromonelocationtoanother.Fordirectweatheringcomparisons,allmaterial(s)shouldundergoexposureconditionsandpropertymeasurementstestingatthesametime.Thetestmethodslistedincludethoseconsideredcriticaltotheperformanceofaircrafttransparentenclosures.Othertestmethodstoevaluatematerialsmayalsobeperformed.Additionaltestmethodsareinpreparationandwillbeincorporated.Theuserisadvisedtoemploythelatestrevisionofanytestmethod.Thedominantcomponentofalltransparentenclosuresisone,ormore,rigidtransparentsheet(s).Thesheet(s)mustpermitthenecessaryvisibilitywhileprovidingstructuralintegrityandprotectingtheaircraftinteriorfromexternalenvironmentsasrequiredbythespecificaircraftdesign.Initsmostsimpleform,therigidtransparentsheetmaybetheonlycomponentofatransparentenclosure.Whenmorethanonerigidtransparentsheetisemployed,thesheetsarelaminatedwithacontrolledthicknesswitheitheranairgaporwithatransparentadhesiveknownasaninterlayer.Transparentenclosuredesignsmayusemultiplerigidtransparentsheetstotakeadvantageofspecificpropertiesofdifferentmaterials.Inthisinstance,therewillbefunctionsrequiredofoneofthesheetsbutnottheother.Thetestmethods,practicesandguideslistedareasummaryoftheavailabletestmethodsapplicabletoplastictransparentenclosures.Theyarepresentedinthisformattosimplifythesearchandtoenabletheusertodetermineifamethodapplicabletohisrequirementsisavailable.1.1Thisguideisintendedtosummarizethestandardtestmethodsavailableonindividualandcompositematerialsutilizedinfabricationofaerospaceplastictransparentenclosures.Assuch,itisintendedtospecificallyincludetransparentthermoplastics,transparentelastomers,andreinforcedplastics,whetherthermoplasticorthermosetting.1.2ThisguideisintendedasanaidinthesearchfortestmethodspertinenttoAerospacePlasticTransparentEnclosures.Itshouldbeunderstoodthatallmethodslistedmaynotapplytoallenclosures.1.3ThestandardsincludedrefertothepropertiesoraspectslistedinTable1.Thepropertiesoraspectsarelistedinalphabeticalorderandthedescriptionsusedareintendedtofacilitatethesearch.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddetermi......
【中国标准分类号】:V13
【国际标准分类号】:49_045
【页数】:3P.;A4
【正文语种】:英语