SGER: Preliminary Investigation of Selective Volumetric Sintering of Powder Metallurgy Parts Using Microwaves

SGER：使用微波选择性体积烧结粉末冶金零件的初步研究

• 批准号: 0542463
• 负责人: Roshan D'souza
• 金额: --
• 依托单位: Michigan Technological University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2007-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0542463&HistoricalAwards=false
• 关键词: SGER; Preliminary; Investigation; Selective; Volumetric

The objective of this SGER research is the preliminary investigation of Selective Volumetric Sintering (SVS) of powder metallurgy parts using microwaves. The physical phenomenon that enables SVS is the heating due to dielectric loss when metal powders are subjected to microwaves. The heat generated is proportional to the square of the electric field strength at the spatial location. The approach is to use phase array antennae to selectively concentrate electric field within a volume of metal powder to directly sinter in place complex three-dimensional patterns. The proposed research will investigate the combined Electromagnetic-Heat transfer problem to develop methods for precise shape control of the sintered shape. Current Solid Free From (SFF) manufacturing techniques are limited to manufacturing one-off prototypes because of the high unit part manufacturing time resulting from the two-dimensional layered nature of these processes. If successful, this research will lead to a radically new manufacturing process that will be able to take advantage of the three dimensional spatial distribution of material in a component to drastically reduce unit part manufacturing time. While retaining the re-configurability and shape creation ability of traditional SFF processes, the new process will have the throughput of traditional mass production techniques, thus enabling mass customization manufacturing. Advanced Discovery and Learning will be addressed through the participation of both graduate and undergraduate students in this research, dissemination in courses and through publications in journals and conference proceedings. Benefits to society will be addressed through the relationship of this work to Sustainable Manufacturing and maintaining American's technological edge in manufacturing.

这项SGER研究的目的是对使用微波的粉末冶金部件的选择性体积烧结（SV）进行初步研究。启用S​​VS的物理现象是由于介电损耗而导致的，当金属粉末受到微波作用时。产生的热量与空间位置的电场强度的平方成正比。该方法是使用相位阵列天线选择将电场选择性浓缩的金属粉末中的电场直接烧结成复杂的三维图案。拟议的研究将研究聚集的电磁热转移问题，以开发用于精确形状控制烧结形状的方法。由于这些过程的二维分层性质，目前没有（SFF）制造技术的固体不限于制造一次性原型。如果成功的话，这项研究将导致一项彻底的新制造过程，该过程将能够利用组件中材料的三维空间分布，从而大大减少单位部分制造时间。在保留传统SFF流程的重新配置和形状创造能力的同时，新过程将具有传统的质量生产技术的吞吐量，从而实现大规模定制制造。高级发现和学习将通过研究生和本科生参与这项研究，课程的传播以及期刊和会议论文集的出版物来解决。通过这项工作与可持续制造和维护美国制造业技术优势的关系，将通过这项工作的关系来解决对社会的好处。