高压锅炉过热器爆管原因分析

44220133BOILERTECHNOLOGYV0144NO2Mar2013(200245)TK2233B16724763(2013)020049030300MW220A38mm55mm6652mm6mm111422mm38mm1122100mrn2AA211GB5310--20081wt20121205(1960)5044342(1)(2)(3)(4)I23442493523007(3)6724(1)30063678(3)672f9400mm(4)300gl7ifAlo4100mm268276mm310AA[1][2]5(1)(2)[1][J]()200339(3)[2]20EJ]200320(12)BurstingReasonsAnalysisonSuperheaterforHighPressureBoilerJINYuming(ShanghaiHeavyMachineryPlantCoLtdShanghai200245China)AbstractBymeansofchemicalanalysismetallographicanalysisandpipecuttingprobemethodsanalyzesthereasonsofceilingsuperheaterpipeSexplosionTheanalysisresultsshowthatremaininthepipinginballkindofforeignbodyleadtotubemediumflowratereducewallmetallongovertemperatureorganizationspheroidizingandpersistentstrengthdeclineiscausedbythedirectcauseofthedetonationtubeKeywordspowerstationboilerforeignbodiesblockedpearlitespheroidizationovertemperaturebursting