一种大型U形弯头制造工艺及技术改进  

A Large U-shaped Elbow Shell Manufacturing Process and Technology Improvement

作　　者：牛彦明 王方萍 NIU Yan-ming;WANG Fang-ping(Dongfang Boiler Group Co.Ltd.,Chengdu 610000,China)

机构地区：[1]东方电气集团东方锅炉股份有限公司,四川成都610000

出　　处：《石油化工设备》2025年第1期55-58,共4页Petro-Chemical Equipment

摘　　要：尾部U形弯头外壳是发卡式热交换器整体外壳制造的核心部件之一,制造工序包括U形弯头的压制(以下称为单瓦片)、U形弯头纵向和环向接缝组装、U形弯头整体与外壳直筒段环向接缝的装焊以及检测等。其中,单瓦片成型尺寸及质量直接影响后续装配能否完成。针对U形结构中的U形弯段外壳的制造和优化,探讨了工艺技术难点和解决方案。The tail U-shaped elbow shellis one of the core components in the manufacture of the overall shell of the hairpin heat exchanger.The manufacturing process includes the pressing of the U-shaped elbow(hereinafter referred to as the single tile),the assembly ofthe longitudinal and circumferential weldingjoints of the U-shaped elbow,the mounting and welding of the circumferential welding joints of the U-shaped elbow as a whole and the straight section of the shell,as well as the testing,etc.,of which the single-tile molding dimensions and the quality of the single tile have a direct impact on the subsequent assembly.For the manufacture and optimization ofthe shell of the U-shaped elbow section in the U-shaped structure,process technology difficulties and solutions were discussed.

关 键 词：发卡式热交换器 U形弯头 成型 尺寸精度 

分 类 号：TQ050.6[化学工程] TG44[金属学及工艺—焊接]