简介:GB/T15579.5-2005《弧焊设备安全要求第五部分:送丝装置》和GB/T15579.7-2005《弧焊设备安全要求第七部分:焊炬(枪)》(以下简称新标准)已于2005年12月1日正式实施。自新标准实施之日起.JB/T9533-1999《焊机送丝装置:技术条件》、JB/T9526-1999《TIG焊焊炬技术条件》和JB/T9532-1999《MIG/MAG焊焊枪技术条件》(以下简称旧标准)废止。
简介:EvaluatingreflactorycoatingsofPUCBbinders:apracticalapproach;Evaluationofstructuralandhigh-temperaturemagnesiumalloys;FATIGUEPROPERTIESOFDIE-CASTMAGNESIUMALLOYAM60B;GrainrefinementofAl-Sialloy(A356)bymeltthermaltreatment;Impactofscrapuseonthepropertiesofhot-worktoolsteels;MAGNESIUMDIECASTINGALLOYAJ62xWITHSUPERIORCREEPRESISTANCE,DUCTILITYANDDIECASTABILITY。
简介:Productionofmassivecastingsfromcomplexlyalloyedhigh-wear-resistanceiron,Quiescentfillingappliedtoinvestmentcastings,ReducingSurfaceDefectsWithProperVeinReduction,Requirementsoncylinderheadalloysforhighpowerengines,SiCvs.75%FeSi:comparingpre-inoculationeffects,TheEffectsofIntensificationPressure,GateVelocity&IntermediateShotVelocityontheInternalQualityofAluminumDieCastings,Tilt-PourGating-KeyParameters.