Static and Dynamic Rolling to Reduce Residual Stress and Distortion

焊接残余应力和变形是英国工业每年花费数百万英镑的问题。在焊接区周围进行局部轧制有可能解决这些问题。然而，由于缺乏科学的理解，这种技术还没有发展起来，它需要应用一个大的垂直力，使实施困难。这一问题可以通过详细的科学研究和新的轧制技术，如动态轧制来解决。该项目的目的是发展和提高对静态和动态轧制过程的科学认识，以控制焊接残余应力和变形。这些改进将带来更安全、更高性能的结构，从而提高英国工业的竞争力。这一目标将通过实现以下目标来实现：焊接和轧制联合作用下残余应力预测模型的建立开发模型以理解动态轧制过程。了解开发和建模这些轧制过程的关键参数。提高了对这些轧制过程如何工作的科学理解。模型的实验验证及疲劳强度的测量。开发将轧制工艺应用于各种焊缝结构的方法。研究创新的滚筒设计，最大限度地减少应力集中的影响。

Weld residual stress and distortion are problems that continue to cost UK industry millions of pounds per year. Localised rolling around the weld zone has the potential to solve these problems. However this technique has not been developed due to a lack of scientific understanding and it requires the application of a large vertical force, making implementation difficult. This problem can be overcome with a detailed scientific study and novel rolling techniques, such as dynamic rolling.The aim of the project is to develop and increase the scientific understanding of static and dynamic rolling processes to control weld residual stress and distortion. These improvements will lead to safer, higher performance structures and therefore increased competitiveness for UK industry. This aim will be achieved through accomplishing the following objectives:1. Development of models that predict the residual stress from the combined action of welding and rolling.2. Development of models to understand the dynamic rolling process.3. Understanding the key parameters to developing and modelling these rolling processes.4. An improved scientific understanding of how these rolling processes work.5. Experimental validation of the models and measurement of fatigue strength.6. Developing methods of applying the rolling process to various weld configurations.7. Investigating innovative roller designs that minimise stress concentration effects.