河北工业科技2017，Vol.34Issue(4)：300-305,6.DOI:10.7535/hbgykj.2017yx04012
选择性激光熔化技术研究现状及发展趋势
Status and development trend of selective laser melting forming technology
杨佳 1郭洪钢 2谭建波3
作者信息
- 1. 河北科技大学材料科学与工程学院,河北石家庄 050018
- 2. 河北省材料近净成形技术重点实验室,河北石家庄 050018
- 3. 长城汽车股份有限公司,河北保定 071000
- 折叠
摘要
Abstract
Selective laser melting is a new technology developed in 1980s.The parts made by this technology have high density, high accuracy, good mechanical properties and chemical properties.The principle and characteristics of the selective laser melting technology is introduced, and the development status of the technology in production equipment and production technology at home and abroad is summarized.The main research directions of selective laser melting equipment are as follows: the laser type, the size of focusing spot, the way of laying powder, powder thickness and so on.The methods of improving the spheroidization of metal powder and crack pore are put forward: changing the power and sweep rate of the laser emitter or preheating the metal powder can improve the powder spheroidization;changing the environmental oxygen content, scanning rate and powder thickness can increase the density of parts.On the this basis of which, some constructive suggestions about slow production rate of equipment, and defects in powder performance and imperfect production chain are put forward.关键词
铸造工艺与设备/选择性激光熔化/成型原理/技术特点/发展现状/发展趋势Key words
casting process and equipment/selective laser melting/forming principle/technical characteristics/development status/development trend分类
矿业与冶金引用本文复制引用
杨佳,郭洪钢,谭建波..选择性激光熔化技术研究现状及发展趋势[J].河北工业科技,2017,34(4):300-305,6.
