| 摘要: |
| 介绍了华中科技大学基于粉末材料选择性激光熔化（Selective laser melting，SLM）成形技术的一些最新研究成果，主要包括设备与软件，以及该技术的主要应用领域。由于SLM成形过程是一个复杂的物理化学冶金过程，金属粉末熔化快，熔池存在时间短，凝固成形时存在较大的温度梯度与热应力，液态金属表面张力大，因而容易产生翘曲变形、裂纹与球化现象三个国际性难题，针对这些难题，提出了相应的研究方案。 |
| 关键词: 选择性激光熔化 快速成形 粉末材料 复杂零件和模具 |
| DOI： |
| 分类号: |
| 基金项目:湖北省自然科学基金创新群体项目（编号：2004ABC001）；国家科技型中小企业创新基金项目（编号：05C26214201059） |
|
| The Technology and Equipment of Selective Laser Melting |
|
SHI Yu-sheng, LU Zhong-liang，ZHANG Wen-xian，HUANG Shu-huai，CHENG Guo-qing
|
|
State Key Laboratory of Material Processing and Die&Mould Technology, Huazhong University of Science and Technology, Wuhan,430074
|
| Abstract: |
| Some up-to-date research productions on Selective laser melting at Huazhong University of Science and Technology are introduced, which mainly includes its devices and software, and the fields applied primarily. In the processing of a complicated physical chemistry metallurgy, due to metal powders melting quickly, melting pond existing short, large temperature gradient and stress caused by temperature gradient, and large surface tension of melting metal powders, there exists three internationalism problems which are warp, crack and balling phenomenon. In order to solve these problems, the paper brings up corresponding investigation schemes. |
| Key words: selective laser melting, rapid prototyping, powder material, complicated part and mould |
