MIL-STD-2219A (w/CHANGE NOTICE 1)

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MIL-STD-2219A (w/CHANGE NOTICE 1), DEPARTMENT OF DEFENSE STANDARD PRACTICE: FUSION WELDING FOR AEROSPACE APPLICATIONS (16 JUN 2008) [S/S BY AWS-D17.1]., The scope of this document is to provide minimum requirements for weld filler materials, workmanship, inspection and record requirements for fusion welding of alloys applicable to aircraft, missiles, other aerospace equipment, their parts and accessories.
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【英文标准名称】:StandardTestMethodsforProximateAnalysisofCoalandCokebyMacroThermogravimetricAnalysis
【原文标准名称】:运用总体热重分析法对煤和焦炭的进行相似分析的标准测试方法
【标准号】:ASTMD7582-2009
【标准状态】:现行
【国别】:
【发布日期】:2009
【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】:D05.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:ash;macrothermogravimetricanalysis,macro-TGA;moisture;proximateanalysis;volatilematter
【摘要】:Moisture,asdeterminedbythisinstrumentaltestmethod,isusedforcalculatingotheranalyticalresultstoadrybasisusingproceduresinPracticeD3180.Moisturecanbeusedinconjunctionwiththeair-drymoisturelossdeterminedbyTestMethodD3302todeterminetotalmoistureincoal.Totalmoistureisusedforcalculatingotheranalyticalresultstoanas-receivedbasisusingPracticeD3180.Ashyieldistheresidueremainingafterheatingthecoalandcokesamples(seeNote1).Note18212;Theashobtaineddiffersincompositionandamountfromthemineralconstituentspresentintheoriginalcoal.Combustioncausesanexpulsionofallwater,thelossofcarbondioxidefromcarbonates,theconversionofironpyriteintoironoxidesandsulfuroxides,andotherchemicalreactions.Ashyield,asdeterminedbythistestmethod,candifferfromtheamountofashproducedinfurnaceoperationsorothercombustionsystemsbecausecombustionconditionsinfluencethechemistryandamountofash.Ashyieldisused,(1)asaparameterforevaluatingsamplingproceduresandcoalcleaningprocesses,(2)intheultimateanalysiscalculationofoxygenbydifferenceusingPracticeD3176,(3)incalculationsincludingmaterialbalance,reactivityandyieldsofproductsrelevanttocoalconversionprocessessuchasgasificationandliquefaction,(4)incalculationstoestimatetheloadingonelectrostaticprecipitatorsandontheflyashandbottomashdisposalsystemsaswellaserosionratesonboilersystems.Volatilematteryield,whendeterminedashereindescribed,maybeusedto(1)indicatecokeyieldoncarbonization,(2)providethebasisforpurchasingandselling,or(3)establishcombustioncharacteristics.Fixedcarbonisacalculatedvalue.Itisthedifferencebetween100andthesumofthepercentmoisture,ash,andvolatilematter.Allpercentsshallbeonthesamemoisturereferencebase.Moisture,ash,andvolatilematterarethreeoftheprincipalparametersusedforassessingthequalityofcoal.1.1Theseinstrumentaltestmethodscoverthedeterminationofmoisture,volatilematter,andash,andthecalculationoffixedcarbonintheanalysisofcoalandcokesamplespreparedinaccordancewithPracticeD2013andPracticeD346.1.2Theseinstrumentaltestmethodsarenotapplicabletothermogravimetricanalyzersusingmicrogramsizesamples.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:73_040
【页数】:9P.;A4
【正文语种】:


基本信息
标准名称:镁粉和铝镁合金粉化学分析方法 1,10-二氮杂菲光度法测定铁量
英文名称:Methods for chemical analysis of magnesium powders and aluminum-magnesium alloy powders;The 1,10-phenanthroline photometric method for the determination of iron content
中标分类: 冶金 >> 金属化学分析方法 >> 轻金属及其合金分析方法
ICS分类: 冶金 >> 有色金属 >> 镁和镁合金
替代情况:被GB/T 13748.9-2005代替
发布日期:1984-04-30
实施日期:1985-04-01
首发日期:1984-04-30
作废日期:2006-01-01
归口单位: 中国有色金属工业协会
起草单位:东北轻合金加工厂
出版日期:1900-01-01
页数:0
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所属分类: 冶金 金属化学分析方法 轻金属及其合金分析方法 冶金 有色金属 镁和镁合金