Application and Drying of Automotive Paints

汽车的涂装是生产中非常重要的一步，受到严格的质量控制，涉及多个步骤。机器人用于操纵油漆雾化器，其沿着优化的路径沿着移动，以最小化所使用的油漆量和循环时间。如果喷涂过程没有正确完成，则获得的油漆层可能是不可接受的，通常是因为表面不平坦，油漆粘附不好，或者油漆颜色有变化。表面缺陷要么是由于不均匀的油漆应用而产生的，要么是在油漆膜沉积在表面上之后由作用在油漆膜上的重力或毛细管力产生的。越来越多的人努力使用计算模型来模拟油漆应用过程，以减少将新车推向市场的成本和时间。 该项目的主要目标是： 第一章 观察静电旋转钟形雾化器中油漆的雾化情况。 （二） 建立钟形雾化器中的油漆雾化模型，包括静电力、雾化气体和钟形表面凹槽的影响。 第三章 确定导致橙子剥落的油漆应用参数的影响。 四、 研究粒子在碰撞漆滴和干燥漆层中的运动。 第五章） 开发油漆干燥和橙子皮形成的数值模型。

Painting of cars is a very important step in production, subject to strict quality control and involving multiple steps. Robots are used to manipulate paint atomizers that move along paths optimized to minimize both the volume of paint used and the cycle time. If the spraying process is not done properly the paint layer obtained may be unacceptable, typically because the surface is uneven, the paint does not adhere well, or there are variations in the colour of the paint. Surface defects either arise because of non-uniform paint application or are created by gravitational or capillary forces acting on the paint film after it has been deposited on the surface. Increasingly there are efforts to simulate, using compute models, the paint application process so as to reduce the cost and time of bringing a new automobile to market. The principal objectives of this project are to: 1) Observe atomization of paint in electrostatic rotating bell atomizers. 2) Develop models of paint atomization in bell atomizers, including the effect of electrostatic forces, atomizing gases, and surface grooves on the bell. 3) Determine the effect of paint application parameters that cause orange peel. 4) Study motion of particles in impacting paint droplets and drying paint layers. 5) Develop numerical models of paint drying and orange peel formation.