JB/T 53194-1999 电动试压泵 产品质量分等
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来源:标准资料网
基本信息
标准名称: | 电动试压泵 产品质量分等 |
中标分类: |
机械 >>
通用机械与设备 >>
泵 |
替代情况: | JB/T 53194-1994 |
发布日期: | 1999-12-30 |
实施日期: | 2000-06-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
出版日期: | 1900-01-01 |
页数: | 8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 通用机械与设备 泵
【英文标准名称】:SpecificationforReinforcedandFilledPolyphenyleneSulfideInjectionMoldingandExtrusionMaterials(08.03)
【原文标准名称】:增强和填入聚亚苯基硫化物注射模塑和挤压材料的规格
【标准号】:ANSI/ASTMD4067-1990
【标准状态】:作废
【国别】:美国
【发布日期】:1990
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:挤压;塑料;材料
【英文主题词】:plastics;materials;extruding
【摘要】:
【中国标准分类号】:G32
【国际标准分类号】:83_120
【页数】:
【正文语种】:英语
【英文标准名称】:StandardSpecificationforAutocatalyticNickelBoronCoatingsforEngineeringUse
【原文标准名称】:工程用自动催化镍硼铸件
【标准号】:ASTMB607-1991(2003)
【标准状态】:现行
【国别】:
【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】:镍;硼;金属覆层
【英文主题词】:autocatalytic;aqueous;sodium;checmicals
【摘要】:1.1Nickelboroncoatingsareproducedbyautocatalytic(electroless)depositionfromaqueoussolutions.Thesesolutionscontaineitheranalkylamineboraneorsodiumborohydrideasareducingagent,asourceofnickelions,abuffer,complexant,andcontrolchemicals.1.2Thisstandarddescribestherequirementsforcoatingsofautocatalyticnickelborondepositedfromaqueoussolutionsontosubstratesforengineeringuse.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.Whenthedepositisheatedabove300176;Cthenickelcrystallizes,formingnickelclustersofNi(111)andboronprecipitatesasnickelboride,Ni3B(211)and(311),increasingthehardnesstogreaterthan1000HK100forType2coatings.1.7Thenickelboroncoatingsaremicroporousandofferlimitedcorrosionprotection.Theircolumnarstructure,however,isbeneficialinreducingwearbecauseitprovidesameansoftrappinglubricantswithinthesurfaceofthecoatedpart.1.8Thisdocumentdescribesonlyautocatalyticnickelboroncoatingsthathavebeenproducedwithoutuseofexternalelectricsources.1.9ThefollowinghazardscaveatpertainsonlytotheTestMethodssectionofthisspecification:Thisstandarddoesnotpurporttoaddressthesafetyproblemsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThefollowingAMSstandardsarenotrequirements.Theyarereferencedforinformationonly:AMS2399andAMS2433.
【中国标准分类号】:H62
【国际标准分类号】:25_220_40
【页数】:6P.;A4
【正文语种】: