球罐施工焊接焊后热处理程序

《球罐施工焊接焊后热处理程序》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。

1、球罐施工焊接焊后热处理程序PostWeldHeatTreatmentProcedure目录Tableofcontents1.概述General.................................................................................................32.热处理前的准备工作PreparationsbeforePWHT................................................33.热处理方法及工

2、艺要求MethodsandprocessofPWHT..........................................44.施工程序及工艺要点Constructionsequenceandkeypoints................................65.质量标准Qualitystandard..........................................................................116.施工组织与安全措施Constru

3、ctionorganizationandsafetymeasures..................111.概述GeneralXX石化球罐项目总共有十四台球罐，其中2台1300m3主材质为16MnR，厚度为30mm，1台1300m3主材质为SA537CL.1，厚度为36mm;8台1500m3主材质为SA537CL2，3台3000m3主材质为SA537CL2，厚度为：52mm，根据ASMEⅧ和GB12337-1998《钢制球型储罐》等有关技术标准，需进行焊后整体热处理。本程序仅适用于XX石化球罐项目球罐焊后整体热

4、处理。Therearetotally14sphericaltanksfortheXXXxPetrochemicalsSphereProjects.Including:2sets1300m3tankswithmaterialsof16MnR,thethicknessis30mm;1set1300m3tankwithmaterialsofSA537CL.1,thethicknessis36mm;8sets1500m3tankswithmaterialsofSA537CL2;3sets3000m3tankswithmat

5、erialsofSA537CL2.Thethicknessis52mm.ThesespheresneedtobepostweldheattreatedasawholeaccordingtoASMESectionⅧ,GB12337-98《SteelSphericalTanks》andtherelatedstandards.ThisprocedureisonlyapplicabletothePWHTof11spheresofXXXxPetrochemicalsSphereProjects.1.1编制依据Referenc

6、es1.1.1质技监局锅发[1999]154号《压力容器安全技术监察规程》《SafetyandTechnologicalSupervisionRegulationofPressureVessel》No.[1999]1541.1.2GB150-1998《钢制压力容器》GB150-1998《SteelPressureVessel》1.1.3GB12337-1998《钢制球形储罐》GB12337-1998《SteelSphericalTank》1.1.4ASMEⅧ的有关规定RequirementsofASMESectio

7、nⅧ1.1.5XX石化球罐项目的施工图纸及相关技术要求。DrawingsandtherelevanttechnicalrequirementsofXXNaihaiPetrochemicalprojects.1.2焊后热处理的目的PurposeofPWHT消除球罐组装与焊接的残余应力，稳定球罐几何尺寸，改善焊接接头和热影响区的组织和性能，达到降低硬度，提高塑性和韧性，进一步释放焊缝中的有害气体，防止焊缝的氢脆和裂纹的产生。ThepurposeofPWHTistorelievestresscausedbyassembl

8、ingandwelding,stabilizethegeometricaldimensionsofspheres,improvethepropertiesofheat-affectedzone,reducehardnessofsphericalshellplates,improveplasticityandtoughness,releaseharmfulga