SGER: Laser Aided Direct Metal Deposition of Three- Dimensional Components: Dimension, Microstructure and Mechanical Properties

SGER：三维部件的激光辅助直接金属沉积：尺寸、微观结构和机械性能

• 批准号: 9633108
• 负责人: Jyotirmoy Mazumder
• 金额: $ 3.69万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-06-01 至 1997-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9633108&HistoricalAwards=false
• 关键词: SGER; Laser; Aided; Direct; Metal

DMI-9633108 Mazumder This Small Grant for Exploratory Research will investigate the surface finish, dimensional accuracy and residual stress in components made of H13 tool steel by a process called Laser Aided Direct Metal Deposition (LADMD). The innovation in this new approach to rapid prototyping technology is fabrication by direct metal deposition of tool steel. This makes it possible to produce tooling, for example, dies and molds, by deposition rather than removal methods. Key questions for those using this technology for tooling are the dimensional accuracy and residual stress state of tooling, because of their affect on the life of the tooling and fit of components produced by it. Another issue in die and mold manufacture is surface finish, a place where most of the layered manufacturing technologies are weak, but surface finish is important to the appearance of components and flow of material in a die or mold cavity. This project will provide experimental data on dimensional accuracy, surface finish, and residual stress, by producing and measuring a standard rapid prototyping test part using LADMD. Materials evaluation will be done in cooperation with Doehler Jervis and DCD Technology, firms that make and use dies. The impact of this new approach will be reductions in lead-time for the manufacture of production parts that need special tooling, leading to more competitive and customized products to satisfy customer needs.

这项探索性研究的小额拨款将通过激光辅助直接金属沉积（LADMD）工艺研究H13工具钢制成的部件的表面光洁度、尺寸精度和残余应力。这种快速成型技术的创新之处在于直接金属沉积工具钢。这使得通过沉积而不是去除方法来生产模具（例如模具和模具）成为可能。刀具的尺寸精度和残余应力状态影响到刀具的使用寿命和零件的配合，是采用该技术加工刀具的关键问题。模具制造中的另一个问题是表面光洁度，这是大多数分层制造技术薄弱的地方，但表面光洁度对模具或模腔中部件的外观和材料的流动很重要。该项目将通过使用LADMD生产和测量一个标准的快速原型测试部件，提供尺寸精度、表面光洁度和残余应力的实验数据。材料评估将与制造和使用模具的Doehler Jervis和DCD Technology公司合作进行。这种新方法的影响将是减少需要特殊工具的生产部件的制造前置时间，从而产生更具竞争力和定制化的产品，以满足客户的需求。