Đang chuẩn bị liên kết để tải về tài liệu:
Advanced Welding Processes Episode 1 Part 3

Tham khảo tài liệu 'advanced welding processes episode 1 part 3', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 26 Advanced Welding Processes above need to be met. The newer processes can offer some reduction in the overall skill requirement but this has unfortunately been replaced in some cases by more complex equipment and the time involved in establishing the process parameters has brought about a reduction in operating factor. Developments which seek to simplify the operation of the equipment will be described below but effective use of even the most advanced processes and equipment requires appropriate levels of operator and support staff training. The cost of this training will usually be recovered very quickly in improved productivity and quality. 2.4 Areas for Development Advances in welding processes may be justified if they offer the following i increased deposition rate ii reduced cycle time iii improved process control iv reduced repair rates v reduced weld size vi reduced joint preparation time vii improved operating factor viii reduction in post-weld operations ix reduction in potential safety hazards x removal of the operator from hazardous area xi simplified equipment setting. Some or all of these requirements have been met in many of the process developments which have occurred in the last ten years these will be described in detail in the following chapters but the current trends in the application of this technology are examined below. 2.5 Process Application Trends Several important trends may be identified on an international level in the application of welding processes these are Advanced Process Development Trends 27 i process change in consumable electrode arc welding processes ii the increased use of automation iii increased interest in new processes e.g. laser welding iv the requirement to fabricate advanced materials. 2.5.1 Consumable trends The use of GMAW and flux cored arc welding FCAW processes at the expense of traditional MMA welding is evident in many industrialized countries. The figures for the production of welding consumables in the UK .