Effect of Laser Parameters on Sintered Powder Morphology

材料科学技术（英）, 2010, 26(4): 375-378.

^1, , ^2, , ^3, , ^4, , ^5,

1.Engineering Research Center for Net Shape and Die Manufacturing, School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea

2.Engineering Research Center for Net Shape and Die Manufacturing, School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea

3.Engineering Research Center for Net Shape and Die Manufacturing, School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea

4.Engineering Research Center for Net Shape and Die Manufacturing, School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea

5.Engineering Research Center for Net Shape and Die Manufacturing, School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea

基金项目: he Korea Research Foundation Grant funded by the Korean Government (MOEHRD, Basic Research Promotion Fund) the National Core Research Center Program from MOST/KOSEF

Effect of Laser Parameters on Sintered Powder Morphology

Byeong-Don Joo ^1, , Jeong-Hwan Jang ^2, , Jae-Ho Lee ^3, , Young-Myung Son ^4, , Young-Hoon Moon ^5,

1.Engineering Research Center for Net Shape and Die Manufacturing, School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea

2.Engineering Research Center for Net Shape and Die Manufacturing, School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea

3.Engineering Research Center for Net Shape and Die Manufacturing, School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea

4.Engineering Research Center for Net Shape and Die Manufacturing, School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea

5.Engineering Research Center for Net Shape and Die Manufacturing, School of Mechanical Engineering, Pusan National University, Busan 609-735, Korea

Keywords： Selective laser sintering

Selective laser sintering is a kind of rapid prototyping process whereby a three-dimensional part is built layerwise by laser scanning a powder. This process is highly influenced by powder and laser parameters such as laser power, scan rate, spot size and layer thickness. Therefore a study on fabricating a line with Fe-Ni-Cr powder on AISI H13 tool steel has been performed by selective laser sintering. In this study, fabrication was performed by experimental facilities consisting of a 200W fiber laser which can be focused to 0.08 mm and atmospheric chamber which can control atmospheric pressure with argon. The line was fabricated with various laser power, scan rate and layer thickness. Line width and surface quality were investigated. With power increase or layer thickness decrease, line width was decreased and line surface quality was improved with scan rate optimization.

参考文献

[1]	J.-P. Kruth;P. Mercelis;J. Van Vaerenbergh;L. Froyen;M. Rombouts .Binding mechanisms in selective laser sintering and selective laser melting[J].Rapid prototyping journal,2005(1):26-36.
[2]	I. Yadroitsev;Ph. Bertrand;I. Smurov .Parametric analysis of the selective laser melting process[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2007(19):8064-8069.
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Effect of Laser Parameters on Sintered Powder Morphology

参考文献