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A Numerical Study on Metallic Powder Flow in Coaxial Laser Cladding

Publish place: Journal of Applied Fluid Mechanics، Vol: 9، Issue: 5
Publish Year: 1395
Type: Journal paper
Language: English
View: 228

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Link to this Paper:
https://civilica.com/doc/1383436

Document National Code:

JR_JAFM-9-5_016

Index date: 23 January 2022

A Numerical Study on Metallic Powder Flow in Coaxial Laser Cladding abstract

In coaxial laser cladding, the quality and property of deposition products are greatly influenced by the powder flow, which is responsible to transport additive materials to the deposition point on a substrate precisely. The metallic powder flow in coaxial laser cladding is simulated by a numerical model based on the gas-solid flow theory. The characteristics of powder concentration distribution between coaxial nozzle and deposition point for a kind of nickel based alloy powder are studied by the proposed model. The relationship between the process parameters and powder flow characteristics, such as focus distance from the nozzle exit and maximum powder concentration, is analyzed to optimize the powder feeding process. In addition, the influence of substrate with different surface shapes on the powder flow is investigated. The results can be used as a guideline for the location of the substrate and the selection of proper processing parameters for coaxial laser cladding.

A Numerical Study on Metallic Powder Flow in Coaxial Laser Cladding Keywords:

Coaxial laser cladding , Gas , solid flow , Powder concentration distribution , Substrate shape

A Numerical Study on Metallic Powder Flow in Coaxial Laser Cladding authors

H. Liu

School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, ۲۲۱۱۱۶, China

J.B. Hao

School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, ۲۲۱۱۱۶, China

G. Yu

Key Laboratory of Mechanics in Advanced Manufacturing, Institute of Mechanics, Chinese Academy of Science, Beijing, ۱۰۰۰۴۴, China

H. F. Yang

School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, ۲۲۱۱۱۶, China

L. W. Wang

School of Civil Engineering, Beijing Jiaotong University, Beijing, ۱۰۰۰۴۴, China

Z. T. Han

School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, ۲۲۱۱۱۶, China