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

通过激光固化聚合物的快速成型在工业上引起了极大的兴趣，即直接从计算机辅助设计(CAD)图纸生成三维零件，以辅助设计过程。激光分层熔覆为制造100%致密的金属元件提供了可能。本研究的目标是开发一种激光辅助金属沉积系统(LAMDS)，该系统能够直接从CAD图纸中成形近100%致密的三维物体。该项目将在激光辅助金属沉积H13钢的工艺参数、沉积尺寸为10-100微米的精确度、显微组织和机械性能之间建立基本的了解。该研究项目在理论和实验之间取得了平衡，将为工具和模具制造业提供有价值的研究成果。

Rapid prototyping by curing polymers with laser light has created considerable interests in industry to generate three dimensional parts directly from Computer Aided Design (CAD) drawings to aid design processes. Laser cladding by layers offers the possibility of fabrication of 100% dense metal component. The objective of this research is to develop a Laser Aided Metal Deposition System (LAMDS) capable of forming near 100% dense three-dimensional objects directly from CAD drawing. The project will develop a fundamental understanding between the process parameters for laser aided metal deposition of H13 steel with deposit dimension with 10-100 micron accuracy, microstructure and mechanical properties. The research project has a balance between theory and experiment, and will provide valuable findings for the tools and dies manufacturing industry.