WPS焊接工艺规程（AWS版）.ppt

杨建国 Welding procedure specification (WPS) 焊接工艺规范 Kevin Mo What is a WPS?什么是焊接工艺规范(WPS)? 焊接工艺规范是为了制造符合规范要求的焊缝而提供指导的、经过评定合格的焊接工艺文件。它或其它文件可用于对焊工或焊机操作工提供指导,以保证符合规范要求。 A WPS is a written qualified welding procedure prepared to provide direction for making production welds to Code requirements. The WPS or other documents may be used to provide direction to the welder or welding operator to assure compliance with the Code requirements. What is included by a WPS?WPS 的内容 一份完整的WPS 应当包含在WPS中所采用的、对每一种焊接方法而言的所有重要变素、非重要变素和当需要时的附加重要变素。样表见图1。焊接工艺规范其实就是规定某一焊接工艺的各种焊接变素。 The completed WPS shall describe all of the essential, nonessential, and, when required, supplementary essential variables for each welding process used in the WPS. For the sample, pls see the figure 1. Who take charge of compiling WPS?WPS应该由谁制定? 每个制造者或承包者应按照焊接规范的规定编写合理的WPS.具体的说WPS是由代表厂家的焊接工程师编写的。 Each manufacturer and contractor shall prepare written Welding Procedure Specifications which are defined in corresponding welding code. Availability of the WPS WPS的可得性 用于产品焊接的WPS,应当在制造现场便于获得，以供查考，并供授权检验师(AI)检查。 A WPS used for Code production welding shall be available for reference and review by the Authorized Inspector (AI) at the fabrication site. How is a WPS created?如何创建一个WPS? Variables 焊接变素 重要变素essential variables 影响接头弯曲和拉伸性能的因素Affect the bend ability and tension ability of joint 非重要变素non essential variables 对弯曲和拉伸不能产生明显影响的因素Can’t produce visible affection on bend ability and tension ability of joint 附加重要变素supplemental essential variables 影响接头冲击性能的因素Affect the toughness of joint Essentials in GMAW or FCAWGMAW and FCAW中的重要变素(AWS) Filler 填充材料 Increase in filler metal classification strength增加填料的强度 Change from one electrode classification to any other electrode classification，limited to FCAW从一种焊丝型号改变到另一种焊丝型号（只限药芯焊丝） Change to an electrode classification not covered in AWS A5.18,A5.20,A5.28,A5.29.焊丝变为在AWS中没有的型号 Electrode焊丝 Change in nominal electrode diameter :焊丝直径变化（实芯焊丝），焊丝直径增加