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所在平台: Udemy |
课程主页: https://www.udemy.com/course/aws-cwi-welding-metallurgy-weldability-of-steel-alloys-2/
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课程名称: 认证焊接检查员的高级焊接冶金学 课程概述: 本课程旨在帮助考生准备CWI（认证焊接检查员）考试，考试分为三部分： - 部分A：基础知识，包括焊接基本术语、焊接工艺、无损检测、安全操作规范等，共150道闭卷题目； - 部分B：实践测试，考察视觉识别焊接缺陷的能力及判断焊缝接收与拒绝的标准； - 部分C：开放书籍测试，评估考生对选定规范的应用能力。 考生需至少在各部分中获得72%的及格分数。课程重点包括焊接过程的全面知识，如SAW、SMAW、FCAW等，焊接冶金学的各个方面，如金属结构、相变、焊缝热影响区的特性、焊接合金的焊接性等。 学习内容涵盖： - 报告编制 - 焊接运行与材料 - 焊接冶金的基础 - 金属的物理结构及各相图 - 焊接过程中的金属反应与焊缝强度 - 各类合金的焊接性及相关焊接缺陷的识别 - 无损检测的基本原理 - 质量控制程序与审核 学员将掌握焊接冶金学及其在实际应用中的重要性，同时熟悉相关的安全要求和质量合规标准。通过这门课程，学员将为CWI考试做好全面的准备。
The CWI exam consists of three partsPart A FundamentalsPart B PracticalPart C Code Book ApplicationsPart A is a closed-book exam that consists of 150 questions on the welding fundamentals, terms and definitions, welding processes, nondestructive examination, procedures, symbols, calculations, safety practices, and duties and responsibilities of a CWIPart B is a practical hands-on test to find the ability to visually identify welding discontinuities and to determine the acceptance or rejection of a weldPart C is an open book test of Code application to evaluate the applicant's familiarity and ability with a selected code applicationThe pass marks for Part A Part B and C is 72 percentYou can refer to the full details of AWS Certification and Qualification Standards in the following documents available at free of cost on the AWS websiteQC1 2016 AMD1 Specification for AWS Certification of Welding InspectorsB5.1 2013 AMD1 Specification for the Qualification of Welding InspectorsStudy the documents and be prepared well to answer any question from the document.In this course, the candidate will learn the following :Preparation of reportsComplete knowledge and understanding of the following welding processes:SAW PAW RW SMAW SW FCAW GTAW OFW ESW GMAWThermal Spraying SolderingMechanical Cutting Thermal Cutting/GougingBrazing- Braze WeldingWelding MetallurgyPart 1Part 2Part 3Part 4Structure of Metals, Formation of Crystalline Solids, BCC, FCC, HCP Structures, Disarray of Grain boundaries, Substitutional and Interstitial solid solutions, Phase Transformation (critical points), Physical Structure of metals, Copper Silver phase Diagram, Welding the precipitation -hardening alloys, Dispersion Strengthening, Welding of Specific alloy Families, Aluminum alloys, Welding the heat treatable grades, Basic Metallurgy of steels, Chemical elements of Steels, Phase Transformation in Pure Iron, and Steel, The Iron -Iron Carbon Equilibrium Diagram, Heat Treatment of Steels, Effect of Cooling Rate on Transformation, Isothermal Transformation or TTT Diagram, Thermal characteristics of welds and Heat Affected Zone, Change of Temperature during welding, Factors influencing temperature changes in weldWelding Metallurgy and Weldability of steel alloys Part 1 Part 2 Part 3 Part 4Part 5 Part 6Part 7Metallurgical Changes During Welding Liquid Metal Solidification Modes Centre line weld solidification cracks Microstructure of the welded metal Solidification of Weld MetalDendrite Growth, time, and Primary spacing Gas-Metal Reactions during Welding Welding of Ferrous Metals Welding of Nonferrous Metals Reactions of Liquid Metals Hot Crack or Solidification Cracking Reactions of Solid State Delayed Cracking Cold Cracking Hydrogen Induced Cracking Weld Strengthening MechanismSolidification of Grain StructureSolid Solution StrengtheningEffect of temperature on Tensile strength Precipitation Hardening Heat affected Zone Solid Solution Strengthened AlloysStrain Hardened Base Metals Re-crystallization of Cold Worked Grains in Heat-Affected Zone Precipitation of Hardened AlloysTransformation Of Hardening AlloysThe Base Metal weldability Weldability of Commercial AlloysPlain Carbon Steels- Low Alloy SteelsHigh Alloy SteelsTypes of Stainless SteelsOther High Alloy Steels Aluminum AlloysMagnesium AlloysCopper Alloys Nickel Base AlloysCobalt AlloysRefractory and Reactive MetalsTitanium AlloysZirconium HafniumTantalumColumbiumMolybdenum Tungsten AlloysBeryllium -The fundamental principles of the following ND Tests:VT, MT, UT, PT, RT, LTHe will acquire knowledge of quality procedures and Quality audits/surveillance.Knowledge and understanding of the fundamentals of welding metallurgyKnowledge and understanding of all the welding symbols and engineering drawings.Base material complianceFiller metal complianceFiller metal storage, handlingInspection records complianceVerification of proper documentation complianceBase material and filler metal compatibilityCertification of documented results and complianceProcedure qualification records complianceWelding procedure complianceNDE procedures complianceApplicable safety requirements in the workplace as per the International Standards
