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Static and Dynamic Rolling to Reduce Residual Stress and Distortion

静态和动态滚动可减少残余应力和变形

基本信息

批准号：
EP/G014132/1
负责人：
Paul Colegrove
金额：
$ 32.11万
依托单位：
CRANFIELD UNIVERSITY
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2009
资助国家：
英国
起止时间：
2009 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FG014132%2F1
关键词：
Static Dynamic Rolling Reduce Residual

项目摘要

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.

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。围绕焊接区的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，它需要施加很大的垂直力，使得实施困难。这个问题可以通过详细的科学研究和新型轧制技术（例如动态轧制）来克服。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。这些改进将导致更安全，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：1.开发预测焊接和轧制联合作用下残余应力的模型.开发模型以了解动态轧制过程.了解开发和建模这些轧制过程的关键参数。提高对这些轧制过程如何工作的科学理解。模型的实验验证和疲劳强度的测量.开发将轧制工艺应用于各种焊接结构的方法。研究可最大限度减少应力集中效应的创新辊设计。