Quantitative assessment of plastic deformation in cutting tools materials

切削刀具材料塑性变形的定量评估

基本信息

批准号：
10060628
负责人：
金额：
$ 1.18万
依托单位：
SECO TOOLS (U.K.) LIMITED
依托单位国家：
英国
项目类别：
Collaborative R&D
财政年份：
2023
资助国家：
英国
起止时间：
2023 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=10060628
关键词：
Quantitative assessment plastic deformation cutting

项目摘要

A method for quantifying the plastic deformation of cutting tool materials that is experienced during machining of high value manufactured components is needed to increase process efficiency (by at least 25%) and reduce energy use and material wastage. Its more accurate quantification would achieve these improvements by enabling better material selection for machining of complex metallic materials such as hardened steels and Nickel alloys commonly used in the aerospace manufacturing industry. It would also help accelerate the development of new tool material grades.Plastic deformation of tooling materials (WC-Co cemented carbide) causes failure of the machining tools by accelerating wear through flaking of the hard coatings applied and then erosion of the tool material itself. The mechanisms of this deformation are not understood in part because it is so difficult to quantify. External measurement of wear to the tool geometry during use gives some indication of what is happening but uncertainties in the measured wear volume are not understood and certainly have not been correlated with measurement of the plastically deformed microstructure below the surface.Development of methods of quantifying plastic deformation in the microstructure and external tool wear in three dimensions under different machining conditions would help to identify the key characteristics of the material microstructure that resist wear and thus lead to better material selection and development of new material grades with improved microstructures.

需要一种在高价值制造组件加工过程中量化切割工具材料的塑性变形的方法，以提高工艺效率（至少提高25％），并减少能源使用和材料浪费。它更准确的量化将通过为加工的复杂金属材料（例如在航空航天制造业中使用的硬化钢和镍合金）进行加工来实现这些改进。这也将有助于加速新的工具材料等级的开发。工具材料的塑料变形（WC-CO胶结碳化物）通过通过剥落所施加的硬涂层并侵蚀工具材料本身而加速磨损，从而导致加工工具的故障。这种变形的机制部分无法理解，因为它很难量化。使用过程中对工具几何形状的外部测量表明正在发生的事情，但是未能理解测得的磨损体积中的不确定性，并且肯定没有与测量表面以下塑料变形的微观结构的测量相关的，从而量化了微观结构和外部工具在三个方向上的塑性磨损的方法，从而识别微观结构和外部工具的塑料磨损的范围，从而识别微观结构的磨损，从而识别微观的磨损，从而识别三位加型磨损，从而识别出微结构的磨损，从而鉴定出微结构的磨损，从而有助于识别微观的磨损。因此，通过改进的微观结构改善了新的材料等级的更好的材料选择和开发。