GB/T 9798-2005 金属覆盖层 镍电沉积层
时间:2024-05-22 08:59:26 来源: 标准资料网 作者:标准资料网 阅读:9828
基本信息
标准名称: | 金属覆盖层 镍电沉积层 |
英文名称: | Metallic costings-Electrodeposited coatings of nickel |
中标分类: |
综合 >>
基础标准 >>
材料防护 |
ICS分类: |
机械制造 >>
表面处理和涂覆 >>
金属镀层
|
替代情况: | 替代GB/T 9798-1997 |
发布部门: | 中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会 |
发布日期: | 2005-10-12 |
实施日期: | 2006-04-01 |
首发日期: | 1988-09-05 |
作废日期: | 1900-01-01 |
主管部门: | 中国机械工业联合会 |
归口单位: | 全国金属与非金属覆盖层标准化技术委员会 |
起草单位: | 武汉材料保护研究所 |
出版社: | 中国标准出版社 |
出版日期: | 2006-04-01 |
页数: | 16开, 页数:16, 字数:23千字 |
计划单号: | 20031063-T-604 |
适用范围
本标准规定了在钢铁、锌合金、铜和铜合金、铝和铝合金上装饰性和防护性镍电沉积层的要求,以及在钢铁、锌合金上铜一镍电镀层的要求。给出了不同厚度和种类镀层的标识,以及镀件暴露于相应服役条件下镀层选择的指南。本标准未规定电镀前基体金属的表面状态,本标准不适用于未加工成形的板材、带材、线材上的镀层,也不适用于螺纹紧固件或密圈弹簧上的镀层。GB/T 9797规定了金属基材上镍+铬、铜+镍十铬电镀层的要求。GB/T 12600规定了塑料上镍+铬、铜+镍+铬电镀层的要求。GB/T 12332和GB/T 11379分别规定了工程用镍、铬电镀层的要求。
前言
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目录
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引用标准
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所属分类: 综合 基础标准 材料防护 机械制造 表面处理和涂覆 金属镀层
【英文标准名称】:StandardTestMethodforDeterminingWaterSeparationCharacteristicsofKerosine-TypeAviationTurbineFuelsContainingAdditivesbyPortableSeparometer
【原文标准名称】:便携式分离仪测定含添加剂的煤油型航空涡轮机燃料脱水性能标准试验方法
【标准号】:ASTMD7224-2008
【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】:D02.J0
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:additives;aviationturbinefuel;coalescence;jetfuel;micro-separometer;MSEPrating;surfactant;waterseparation;Additives;Aviationturbinefuels;Kerosine;Portableseparometer;Separationprocessing/analysis
【摘要】:Thistestmethodprovidesameasurementofthepresenceofsurfactantsinaviationturbinefuels.LikepreviousobsoleteTestMethodsD2550andD3602andcurrentTestMethodD3948,thistestmethodcandetecttraceamountsofrefinerytreatingchemicalsinfuel.Thetestmethodscanalsodetectsurfaceactivesubstancesaddedtofuelintheformofadditivesorpickedupbythefuelduringhandlingfrompointofproductiontopointofuse.Someofthesesubstancesdegradetheabilityoffilterseparatorstoseparatefreewaterfromthefuel.Thistestmethodyieldsapproximatelythesame(low)MSEPratingsasTestMethodD3948forfuelsthatcontainstrongsurfactants.ThistestmethodwillgiveapproximatelythesameMSEPratingsforJetA,JetA-1,JP-5,JP-7,andJP-8fuelsasTestMethodD3948whentestingreferencefluids.TheMSEPratingsobtainedbythistestmethodarelessaffectedbyweaksurfactantsthanTestMethodD3948.SomewhathigherMSEPratingsforJetA,JetA-1,JP-5,JP-7,andJP-8fuelsareobtainedbythistestmethodthanthoseobtainedbyTestMethodD3948whenadditivessuchasstaticdissipateradditives(SDA)andcorrosioninhibitorsarepresentinthefuel.Thiscorrelateswiththesatisfactoryperformanceoffilterseparatorsforsuchfuels,whenwet.However,thesesameadditivesadverselyaffecttheMSEPratingsobtainedbyTestMethodD3948byerroneouslyindicatingthatsuchadditizedfuelswouldsignificantlydegradetheabilityoffilterseparatorstoseparatefreewaterfromthefuelinactualservice.TheMicro-Separometerhasaneffectivemeasurementrangefrom50to100.Valuesobtainedoutsideofthoselimitsareundefinedandinvalid.Note18212;Intheeventavaluegreaterthan100isobtained,thereisagoodprobabilitythatlighttransmittancewasreducedbymaterial,typicallywater,containedinthefuelthatwasusedtosetthe100referencelevel.Duringthecoalescingportionofthetest,thecontaminatingmaterialaswellasthe50x00B1;1x00B5;Lofdistilledwaterwassubsequentlyremovedduringthisportionofthetest.Thus,theprocessedfuelhadahigherlighttransmittancethanthefuelsampleusedtoobtainthe100referencelevelresultinginthefinalratingmeasuringinexcessof100.1.1Thistestmethodcoversarapidportablemeansforfieldandlaboratoryusetoratetheabilityofkerosine-typeaviationturbinefuels,bothneatandthosecontainingadditives,toreleaseentrainedoremulsifiedwaterwhenpassedthroughfiberglasscoalescingmaterial.1.1.1Thistestmethodisapplicabletokerosine-typeaviationturbinefuelsincluding:JetAandJetA-1(asdescribedinSpecificationD1655);JP-5,JP-7,JP-8,andJP-8+100.(SeeSection6.)1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificwarningstatements,see8.2-8.5.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:15P.;A4
【正文语种】:英语
【英文标准名称】:StandardSpecificationforOzone-ResistingSiliconeRubberInsulationforWireandCable
【原文标准名称】:电线及电缆用耐臭氧的硅酮橡胶绝缘材料的标准规范
【标准号】:ASTMD2526-2002
【标准状态】:作废
【国别】:
【发布日期】:2002
【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】:D09.18
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:金属线;绝缘;耐力;电气工程;电缆;硅酮橡胶;硅氧烷;耐臭氧性;电绝缘;电绝缘材料
【英文主题词】:acceleratedwaterabsorption;acvoltagetest;capacitance;dcvoltagetest;dissipationfactor;ozone-resisting;partialdischarge;silicone-rubberinsulation;NumberCode29.035.20(Plasticandrubberinsulatingmaterials)
【摘要】:1.1Thisspecificationcoversanozone-resistingcrosslinkedsiliconerubberinsulatingcompoundforelectricalwiresandcables.1.2Thistypeofinsulationisconsideredsuitableforcontinuousoperationatconductortemperaturesupthrough125
【中国标准分类号】:K15
【国际标准分类号】:29_035_20
【页数】:3P.;A4
【正文语种】: