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Numerical simulation of powder transport behavior in laser cladding with coaxial powder feeding
Liu H(刘昊); He XL(何秀丽); Yu G(虞刚); Wang ZB; Li SX(李少霞); Zheng CY(郑彩云); Ning WJ(宁伟健); Liu, H (reprint author), China Univ Min & Technol, Sch Mech & Elect Engn, Xuzhou 221116, Peoples R China.
Source PublicationSCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
2015-10
Volume58Issue:10Pages:104701
ISSN1674-7348
Abstract

Laser cladding with coaxial powder feeding is one of the new processes applied to produce well bonding coating on the component to improve performance of its surface. In the process, the clad material is transported by the carrying gas through the coaxial nozzle, generating gas-powder flow. The powder feeding process in the coaxial laser cladding has important influence on the clad qualities. A 3D numerical model was developed to study the powder stream structure of a coaxial feeding nozzle. The predicted powder stream structure was well agreed with the experimental one. The validated model was used to explore the collision behavior of particles in the coaxial nozzle, as well as powder concentration distribution. It was found that the particle diameter and restitution coefficient greatly affect the velocity vector at outlet of nozzle due to the collisions, as well as the powder stream convergence characteristics below the nozzle. The results indicated a practical approach to optimize the powder stream for the coaxial laser cladding.

KeywordLaser Cladding Solid-gas Flow Numerical Simulation Collision Behavior
DOI10.1007/s11433-015-5705-4
URL查看原文
Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000361783300005
WOS KeywordDirect Metal-deposition ; Flow ; Coefficient ; Particles ; Model ; Beam
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Funding OrganizationThis work was supported by the National Natural Science Foundation of China (Grant Nos. 11272316 and 11272317), and a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
DepartmentMAM激光智能制造工艺力学
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Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58417
Collection先进制造工艺力学重点实验室
Corresponding AuthorLiu, H (reprint author), China Univ Min & Technol, Sch Mech & Elect Engn, Xuzhou 221116, Peoples R China.
Recommended Citation
GB/T 7714
Liu H,He XL,Yu G,et al. Numerical simulation of powder transport behavior in laser cladding with coaxial powder feeding[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2015,58(10):104701.
APA Liu H.,He XL.,Yu G.,Wang ZB.,Li SX.,...&Liu, H .(2015).Numerical simulation of powder transport behavior in laser cladding with coaxial powder feeding.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,58(10),104701.
MLA Liu H,et al."Numerical simulation of powder transport behavior in laser cladding with coaxial powder feeding".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 58.10(2015):104701.
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