尿素装置高压喷射器环型密封法兰密封面堆焊修复  

BEAD WELDING USED TO REPAIR ANNULAR SEALING FLANGE SURFACE OF HIGH PRESSURE EJECTOR IN UREA PLANT

作　　者：李方全 Li Fangquan(China BlueChemical Ltd.,Dongfang 572600)

机构地区：[1]中海石油化学股份有限公司装置保运部,海南东方572600

出　　处：《大氮肥》2020年第1期10-13,共4页Large Scale Nitrogenous Fertilizer Industry

摘　　要：针对材质为尿素级奥氏体不锈钢25-22-2L Mn的环型密封法兰密封面被高压甲铵溶液冲刷腐蚀后而形成的泄漏缺陷,采用焊条电弧焊(SMAW)进行增材堆焊成型修复,解决尿素装置高压喷射器环型密封法兰的泄漏问题。The annular sealing flange surface made of urea grade austenitic stainless steel 25-22-2 LMn was attacked by erosion corrosion of high pressure methyl ammonium solution, forming leakage defect. The shielded metal arc welding(SMAW) was used to make bead welding to repair the leakage on annular sealing flange surface of the high pressure ejector used in urea plant.

关 键 词：高压喷射器 甲铵溶液 冲刷腐蚀 焊接热裂纹 增材堆焊 

分 类 号：TQ441.41[化学工程—化学肥料工业] TQ050.7