SamplePreparationSamplingandsamplepreparationisanimportantissuebecausetraditionalmethodsusedtoobtainsamplesforoxygenandnitrogendeterminationaredifferentfromthoserecommendedforhydrogen,especiallywhensamplingmoltenmetal.Themaindifferenceinsteelsamplingproceduresforoxygen/nitrogenandhydrogenisduetothemobilityofhydrogen.Specialprecautionsmustbeusedwhensamplingforhydrogen.Frommoltensteelandiron,asamplemustbequicklyquenchedincoldwaterandchilledinarefrigerantsuchasliquefiednitrogenoramixtureofacetoneandsolidcarbondioxideinordertoreducelossesofhydrogenfromdiffusion.Lossesofoxygenandnitrogenfromdiffusionarenotaproblem.Asamplethatistakenforhydrogenandchilledinarefrigerantcanalsobeusedforoxygenandnitrogendetermination.However,asamplethatistypicallytakenforoxygenand/ornitrogendeterminationisnotsuitableforhydrogendeterminationduetohydrogenloss(diffusion).Surfacecontaminationmustberemovedbyfilingorlightgrinding,usingcarenottooverheatthesample.分析儀，就選上海禹重實(shí)業(yè)有限公司，用戶(hù)的信賴(lài)之選。安徽專(zhuān)業(yè)元素分析儀咨詢(xún)報(bào)價(jià)

Instrumentcalibration/driftcorrectionf.Cleantheupperandlowerelectrodemanually,or,ifapplicable,removethecrucibleandpresstheanalyzebuttontocleanwiththeautomaticcleaner.g.Firmlyplaceagraphitecrucibleonthelowerelectrodetip.h.PresstheAnalyzebuttonontheinstrumentscreen,thelowerelectrodewillcloseandtheanalysissequencewillstartandendautomatically.i.Repeatsteps3bthrough3haminimumofthreetimesforeachcalibration/driftstandardused..Calibrate/driftfollowingtheprocedureoutlinedintheoperatorsinstructionmanual.山東專(zhuān)業(yè)元素分析儀多少錢(qián)上海禹重實(shí)業(yè)有限公司分析儀服務(wù)值得放心。

Oxygen,Nitrogen,andHydrogeninRefractoryMetalsSummaryOxygenandnitrogenarealloyingelementsintitanium,andarealsoclassifiedasalphastabilizingelementsastheypromotealphaphasealloys.Interstitialoxygenandnitrogenlevelscanbeusedtoregulatethetensilestrengthofthematerial,butduetoitshighsolubilitycancauseunwantedsurfaceembrittlement.Thisphenomenoncanbeleveraged,however,undercontrolledprocessingtocreatesurfacefilmsthatincreasesurfacehardnessandwearproperties.

SummaryThedeterminationoftheamountofoxygen,nitrogen,andhydrogeniniron,steel,nickel-,andcobalt-basealloysrepresentssomeofthemostimportantqualitymetricsforthesematerials.Oxygenisusedtocreatesteelfrompigironbyremovingexcesscarbon.Oxygencontentmustbecontrolledtolimittheamountofcarbonmonoxidethatcanbeformedduringsolidificationwhichmaycauseexcessiveporosity.Nitrogenisconsideredbothanimpurityaswellasanimportantalloyingagent.Itcanbepresentasanitrideorinterstitiallyinitsgaseousform.Increasednitrogencontentisknowntoincreaseyieldandtensilestrength,thusdecreasingductilityandformability.Excessivelevelsmayevolveduringsolidificationthusincreasingporosity.Highhydrogencontentistheprimarycauseofembrittlement,blisteringandflakingduetoitshighmobilitythroughthelatticeandprovidesnopotentialalloyingbenefits.TheONH836utilizesahigh-powerelectrodefurnacetoquicklyandefficientlyreleasethetargetgasesfromwithinthesample,whichallowsforaveryrapidsimultaneousdeterminationofoxygen,nitrogen,andhydrogen.上海禹重實(shí)業(yè)有限公司是一家專(zhuān)業(yè)提供分析儀的公司，有想法的不要錯(cuò)過(guò)哦！

Procedure–Powder/ChipSamplesInstrumentcalibration/driftcorrection.PresstheAnalyzebuttonontheinstrumentscreen.Afterashortdelay,theloadingheadslide-blockwillopen.PlacetheNickelCapsulecontainingthesampleintotheopenportatthetopoftheloadinghead.PresstheAnalyzebuttonontheinstrumentscreenagain,theloadingheadslide-blockwillcloseandthelowerelectrodewillopen.Cleantheupperandlowerelectrodeeithermanuallyorremovethecrucibleandpresstheanalyzebuttontocleanwithanautomaticcleanerifapplicable.上海禹重實(shí)業(yè)有限公司為您提供分析儀，歡迎新老客戶(hù)來(lái)電！浙江美國(guó)LECO分析儀廠家供應(yīng)

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力可ONH836氧氮?dú)浞治鰞x特征穩(wěn)固的爐頭試樣加載結(jié)構(gòu)試樣加載過(guò)程中完全密閉，消除大氣的中可能帶來(lái)的雜質(zhì)的污染；簡(jiǎn)化日常分析所需的爐頭進(jìn)樣部分機(jī)械維護(hù)工作?？蛇x的自動(dòng)功能上下電極自動(dòng)清掃裝置；20位試樣及坩堝自動(dòng)進(jìn)樣裝置。附加功能及優(yōu)點(diǎn)可選六軸可旋轉(zhuǎn)觸摸屏幕，增強(qiáng)了操作的工效和直觀性；可選具有壓力補(bǔ)償和溫度控制性能的標(biāo)氣檢測(cè)氣路；新型氣路管道減少氣路連接閥，使得漏氣，斷路故障更少；配置SmartLineRemote遠(yuǎn)程診斷功能。安徽專(zhuān)業(yè)元素分析儀咨詢(xún)報(bào)價(jià)