Arc weld efficiency database and modeling tools

这个名为“弧焊效率数据库和建模工具”的项目将由滑铁卢大学(UW)先进材料连接中心(CAMJ)牵头，以开发工程工具和焊接基础知识，使加拿大各地的焊接工程师和研究人员受益。与加拿大焊接协会(CWA)合作，将解决工业和研究人员面临的两个关键问题：(1)关于焊接热效率的数据不足，(2)支持焊接工艺开发的工程工具有限。为了解决这些问题，研究人员将使用UW定制设计的设备，使用先进的波形对现代气体保护金属弧焊(GMAW)过程进行效率测量。这些测量将使用几个常见焊接过程的数值模型将焊接电弧总能量输入和冷却速度联系起来。这将建立一个效率值数据库，工程师可以使用它来预测冷却速度并简化现场焊接程序的开发。效率测量将用于开发一套工具，该工具将实验和数值模拟数据结合到一套表格和工程指南中，提供预期的冷却速度、焊缝熔深，以及由此产生的接头是否可能过于脆化并可能需要额外的机械测试。新的知识和工具将在工业和教育部门提供给CWA的成员，以便有效地利用研究成果。这些最终用户将有机会获得新的工具，从而提高他们的焊接知识，并提升加拿大作为焊接技术领先者的地位。

This project entitled "Arc weld efficiency database and modeling tools" will be led by the University of Waterloo (UW) Centre for Advanced Materials Joining (CAMJ) to develop engineering tools and fundamental knowledge regarding welding, to benefit welding engineers and researchers across Canada. In collaboration with the Canadian Welding Association (CWA), two key issues for both industry and researchers will be addressed: (1) insufficient data regarding weld thermal efficiency, and (2) limited engineering tools to support welding procedure development. To tackle these issues, researchers will conduct efficiency measurements of modern gas metal arc welding (GMAW) processes using advanced waveforms using equipment custom designed at UW. The measurements will relate total welding arc energy input and cooling rate using numerical models for several common welding processes. This will build a database of efficiency values that engineers can use in order to predict cooling rates and simplify development of welding procedures in the field. The efficiency measurements will be used to develop a set of tools which combine experimental and numerical simulation data into a set of tables and engineering guidelines which provide the expected cooling rates, weld penetration, and whether the resulting joint may be excessively brittle and potentially require additional mechanical testing. The new knowledge and tools will be delivered to the members of CWA in the industrial and education sectors, in order to achieve an effective utilization of the research results. These end-users will have access to new tools which advance their welding knowledge and elevate the status of Canada as a leader in welding technology.