ABS的二极管激光焊接：实验与过程建模.doc

ABS的二极管激光焊接：实验与过程建模 M.ILIE1,3, E.CICALA1,2 , D.GREVEY2, S. MATTEI2, V. STOICA1 1Mechanical Engineering Faculty, “Politehnica” University of Timisoara, Mihai Viteazu nr.1,Timisoara, 300222, Romania 2Institut Carnot de Bourgogne, UMR 5209 CNRS-Université de Bourgogne,12 Rue de la Fonderie,71200 Le Creusot, France 3ISIM National RD Institute for Welding and Material Testing,30, Mihai Viteazul Bv, 300222 Timisoara, Romania 摘要: 在本论文中, ABS板材的激光束焊接是结合实验和理论方面来决定的。在建模的过程中，光学模型是用来决定如何被第一材料所弱化以及在接口得到激光束的剖面图。使用该信息作为数据输入的一个热模型，使得两个组件在温度领域的演化变得可以估计。热模型是基于传热和使用材料特性的温度变化规律的第一原则。证实了数值计算结果与实验值,一些考虑到管理整个过程基本现象的重要观点可以被提取出来。这种方法被证明是一种有效的工具在确定聚合物材料的可焊性和保证实验探索时间和成本的显著降低，这一个仅仅是用来寻找最佳值。 关键词:激光焊接、半透明聚合物、数值模拟、试验设计 中图分类号: 42.68.Mj; 44.05.e; 78.66.Qn Abstrct In the present paper, the laser beam weldability of ABS plates is determined by combining experimental and theoretical aspects. In modelling the process, an optical model is used to determine how the laser beam is attenuated by the first material and to obtain the laser beam profile at the interface. Using this information as input data in a thermal model, the evolution of the temperature field within the two components can be estimated. The thermal model is based on first principles of heat transfer and utilizes temperature variation laws of material properties. Corroborating the numerical results with the experimental ones, some important insights concerning the fundamental phenomena that govern the process could be extracted. This approach proved to be an efficient tool in determining the weldability of polimeric materials and assures a significant reduction of time and costs with the experimental exploration, this one being made only for finding the optimal values. 介绍 聚焦激光束在聚合物材料的激光焊接传输过程中是针对两个重叠的热塑性部分：首先设计为透明的激光波长,其次设计为红外光谱吸收。在激光束和组件被组装之间有一个相对运动,它允许一个连续运转的激光束去照射一条具体线的宽度。通过吸收产生的热量被传送到透明的组件传导。在两个组件之间的粘接是通在这个区域的分子链渗透得以实现的。因为在物质的“流动”状态这种现象是非常活跃的, 所以界面温度要在固液过渡温度与热塑性材料的降解温度之间[1]。与传统的焊接技术相比, 激光焊接的效率强烈地依赖于材料的性能。因此，要获得高品质的焊接接头就得对激光照射下对材料