(1.中南工业大学非平衡材料研究所， 长沙 410083;
2.华中理工大学材料系，武汉 430074)
摘 要:
关键字: 激光熔覆 同步送粉 粉末分布密度
（1.Nonequillibrium Material Science and Engineering Institute,
Central South University of Technology, Changsha 410083 ;
2.Huazhong University of Science and Technology, Wuhan 430074）
Abstract:A new conception, average powder density defined as the powder quantity clad on unit area of substrate surface has been put forward. Critical claddings were obtained by using a 2 kW continuous-wave CO2 laser and a powder injector. Experimental results showed that, specific energy of laser cladding is proportional to average powder density, and average powder density has an important influence on the cladding depth and angle respectively.
Key words: laser cladding synchronous powder feeding average powder density
