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來源: 發(fā)布時間:2022-04-13

SamplePreparationSamplingandsamplepreparationisanimportantissuebecausetraditionalmethodsusedtoobtainsamplesforoxygenandnitrogendeterminationaredifferentfromthoserecommendedforhydrogen,especiallywhensamplingmoltenmetal.Themaindifferenceinsteelsamplingproceduresforoxygen/nitrogenandhydrogenisduetothemobilityofhydrogen.Specialprecautionsmustbeusedwhensamplingforhydrogen.Frommoltensteelandiron,asamplemustbequicklyquenchedincoldwaterandchilledinarefrigerantsuchasliquefiednitrogenoramixtureofacetoneandsolidcarbondioxideinordertoreducelossesofhydrogenfromdiffusion.Lossesofoxygenandnitrogenfromdiffusionarenotaproblem.Asamplethatistakenforhydrogenandchilledinarefrigerantcanalsobeusedforoxygenandnitrogendetermination.However,asamplethatistypicallytakenforoxygenand/ornitrogendeterminationisnotsuitableforhydrogendeterminationduetohydrogenloss(diffusion).Surfacecontaminationmustberemovedbyfilingorlightgrinding,usingcarenottooverheatthesample.分析儀,就選上海禹重實業(yè)有限公司,用戶的信賴之選。安徽專業(yè)元素分析儀咨詢報價

安徽專業(yè)元素分析儀咨詢報價,分析儀

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

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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.上海禹重實業(yè)有限公司是一家專業(yè)提供分析儀的公司,有想法的不要錯過哦!

安徽專業(yè)元素分析儀咨詢報價,分析儀

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

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力可ONH836氧氮氫分析儀特征穩(wěn)固的爐頭試樣加載結(jié)構(gòu)試樣加載過程中完全密閉,消除大氣的中可能帶來的雜質(zhì)的污染;簡化日常分析所需的爐頭進樣部分機械維護工作。可選的自動功能上下電極自動清掃裝置;20位試樣及坩堝自動進樣裝置。附加功能及優(yōu)點可選六軸可旋轉(zhuǎn)觸摸屏幕,增強了操作的工效和直觀性;可選具有壓力補償和溫度控制性能的標(biāo)氣檢測氣路;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。安徽專業(yè)元素分析儀咨詢報價