过控专业 毕业设计 外文翻译 中英文 封头加工工艺.docVIP

毕业设计（论文）外文翻译 毕业设计（论文）题目：含硫氨污水冷却器 外文题目： Head processing technology 译文题目：封头加工工艺 院 （系）：化工装备学院 专业班级：过控0802班 学生姓名： 指导教师： Head processing technology 1.welding process 1.1welding operation Our factory common welding methods are: manual welding, argon arc welding, submerged arc welding. (1) manual welding is mainly used for carbon steel 3-6mm plate welding. (2) submerged arc welding to more than 8mm carbon steel stainless steel sheet welding mainly. (3)3-6mm stainless steel argon arc welding with welding mainly. Commonly used stainless steel wire ER304and ER316L steel wire, commonly used to J422and J507and J426and J427low-temperature welding consumables. Flux of carbon steel used is the HJ431, stainless steel commonly used is HJ260,. As a result of welding wire flux can be easily affected with damp, stored in the infrared drying machine, flux HJ431and HJ260drying temperature is 250-300℃. Welding wire J422and J350drying temperature were 150℃ and 300 ℃ Welding process is completely in accordance with the welding execution, sheet thickness determines the welding to welding or double sided arc welding in welding, after the weld seam inspection ( RT X ray ) judgment without pores, cracks and other defects, such as found in the above deficiencies, to the repair, until the filming. 1.2 welding operation standard (1) welding procedure card after receiving process, affirm the process card and physical material, quantity, unit number, specifications, size instruction number is consistent, whether there is debris around the wafer, wafer splashes whether clean removal, such as treatment is not clean, will use the grinding clean. (2) there is no welding test plate, groove cutting quality can meet the requirement, material surface without obvious defects, such as abnormal response. (3) according to the Regulations welding procedure card check of welding groove type and dimensions correspond to. (4) on each side of groove s