基本信息
标准名称: | 绘图仪尺 绘图模板 |
英文名称: | Drawing ruler -- Drawing template |
中标分类: |
轻工、文化与生活用品 >>
文教、体育、娱乐用品 >>
文教、绘图仪器、簿册、卡片 |
ICS分类: |
综合、术语学、标准化、文献 >>
技术制图 >>
制图设备
|
替代情况: | 替代QB/T 1474.6-1992 |
发布部门: | 中华人民共和国国家发展和改革委员会 |
发布日期: | 2005-03-19 |
实施日期: | 2005-09-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
提出单位: | 中国轻工业联合会 |
归口单位: | 全国文体用品标准化中心 |
起草单位: | 上海蝴蝶绘图文具有限公司 |
出版社: | 中国轻工业出版社 |
出版日期: | 2005-09-01 |
页数: | 5页 |
批文号: | 15730-2005 |
书号: | 155019.2789 |
适用范围
本标准规定了合成树脂绘图模板的分类、要求、试验方法、检验规则和标志、包装、运输、贮存。
本标准适用于合成树脂绘图模板。
前言
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目录
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引用标准
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所属分类: 轻工 文化与生活用品 文教 体育 娱乐用品 文教 绘图仪器 簿册 卡片 综合 术语学 标准化 文献 技术制图 制图设备
【英文标准名称】:StandardSpecificationforAutocatalyticNickelBoronCoatingsforEngineeringUse
【原文标准名称】:工程用自动催化镍硼铸件的标准规范
【标准号】:ASTMB607-1991(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1991
【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】:B08.08.01
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:Autocatalyticcoatings--specifications;ElectrodepositedNicoatings--specifications;Electrolesscoatings;Engineeredelectrodepositedcoatings--specifications;Metalliccoatings--specifications;Nickelboron
【摘要】:1.1Nickelboroncoatingsareproducedbyautocatalytic(electroless)depositionfromaqueoussolutions.Thesesolutionscontaineitheranalkylamineboraneorsodiumborohydrideasareducingagent,asourceofnickelions,abuffer,complexant,andcontrolchemicals.1.2Thisspecificationdescribestherequirementsforcoatingsofautocatalyticnickelborondepositedfromaqueoussolutionsontosubstratesforengineeringuse.Thespecificationclassifiesthesecoatingsintotwotypes:1.2.1Type1coatingshaveaboroncontentof0.1tolessthan3.5masspercentwiththebalancenickel.1.2.2Type2coatingshaveaboroncontentof3.5to6masspercentandaminimumof90masspercentnickel.1.3Thecoatingsarehardanduniforminthickness,evenonirregularshapedparts,andusedinawiderangeofapplications.1.4Processsolutionsformulatedwithanalkylamineboraneusuallyproducecoatingsthatcontain0.1to3.5%boron.Thincoatingsofthistypeprovidebondabilityandsolderabilityonelectroniccomponentssuchasleadframes,electricalcontacts,andheaders.Tomaintainsolderability,thesecoatingsaregenerallynotheattreated.1.5Processsolutionsformulatedwithsodiumborohydridearestronglyalkalineandarefrequentlyusedtoplatesteelandtitaniumpartstoimpartsurfacehardnessandwearresistanceproperties.Depositsproducedfromtheseprocessescancontain3to5%boronandthalliumorothermetalswhichareusedtostabilizetheplatingsolutionandmodifythecoatingproperties.1.6Thephysicalandmechanicalpropertiesofthesedepositssuchasdensity,hardness,stress,andmeltingpointwillvarywiththeboroncontent.Thevariationofboroncontentalsoaffectsthequantityandstructureofnickelborideprecipitatedduringheattreatment.Intheas-platedconditionthedepositconsistsofapredominantlyamorphousmixtureofnickelandboronwithahardnessofabout700HKN.Whenthedepositisheatedabove300x00B0;Cthenickelcrystallizes,formingnickelclustersofNi(111)andboronprecipitatesasnickelboride,Ni3B(211)and(311),increasingthehardnesstogreaterthan1000HK100forType2coatings.1.7Thenickelboroncoatingsaremicroporousandofferlimitedcorrosionprotection.Theircolumnarstructure,however,isbeneficialinreducingwearbecauseitprovidesameansoftrappinglubricantswithinthesurfaceofthecoatedpart.1.8Thisdocumentdescribesonlyautocatalyticnickelboroncoatingsthathavebeenproducedwithoutuseofexternalelectricsources.1.9ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.10ThefollowinghazardscaveatpertainsonlytotheTestMethodssectionofthisspecification:Thisstandarddoesnotpurporttoaddressthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThefollowingAMSstandardsarenotrequirements.Theyarereferencedforinformationonly:AMS2399andAMS2433.X2.1.1Thistestmethodwillevaluatetheresistanceofthecoatingtoabrasivewear.Thetestisperformedonarotatingplatedpanelthatisabradedbytworotatingrubberwheels.Thepanelisweighedbef......
【中国标准分类号】:J31
【国际标准分类号】:25_220_40
【页数】:6P.;A4
【正文语种】:英语