Fundamentals of Selective Laser Sintering of 316 Stainless Steel Powder

2011 ◽  
Vol 464 ◽  
pp. 703-707 ◽  
Author(s):  
Pei Kang Bai ◽  
Yu Xin Li ◽  
Bin Liu
Keyword(s):  
Stainless Steel ◽  
Line Width ◽  
Layer Structure ◽  
Selective Laser Sintering ◽  
Single Layer ◽  
Steel Powder ◽  
Laser Sintering ◽  
Processing Parameter ◽  
316 Stainless Steel ◽  
Scan Line

Selective laser sintering technology is used for manufacturing parts from 316 stainless steel powders. Experiments were carried out on a Nd:YAG laser machine (LMY400) with 400W. Powder is layered by a roller over the surface of a 100mm diameter build cylinder. Effects of processing parameter on the scan line width, the scan line height, the single layer structure and the multilayer structure are investigated. The results show laser power, scan speed and layer thickness have a great effect on the scan line width and line height. Furthermore, the stable and continuous vectors are formed with the increasing of the number of layers.

Balling Process in Selective Laser Sintering 316 Stainless Steel Powder

2006 ◽  
Vol 315-316 ◽  
pp. 357-360 ◽  
Author(s):  
Yi Fu Shen ◽  
D.D. Gu ◽  
Y.F. Pan
Keyword(s):  
Stainless Steel ◽  
Laser Power ◽  
Selective Laser Sintering ◽  
Steel Powder ◽  
Laser Sintering ◽  
Stainless Steel Powder ◽  
Surface Tension Effect ◽  
316 Stainless Steel ◽  
Scan Speed ◽  
Moderate Range

Balling process in selective laser sintering of 316 stainless steel powder was investigated. It showed that the balling phenomenon was ascribed to the higher liquid viscosity and surface tension effect during laser sintering. The effects of laser power and scan speed on the balling initiation was studied. It was found that increasing laser power and scan speed within a moderate range can reduce balling effect. However, care should be taken to control laser powers and scan speeds that can be used since their excessive increase may give rise to detrimental effects.

scholarly journals Selective Laser Sintering and Infiltration Characteristics of Resin-Coated Stainless Steel Powder.

2002 ◽  
Vol 49 (12) ◽  
pp. 1098-1103 ◽  
Author(s):  
Liew Loy Seng ◽  
Masahiro Umeda ◽  
Katsuhiro Maekawa ◽  
Shinichi Iida ◽  
Tomoya Suzuki
Keyword(s):  
Stainless Steel ◽  
Selective Laser Sintering ◽  
Steel Powder ◽  
Laser Sintering ◽  
Stainless Steel Powder

Behavior of Microwave Heating of 316 Stainless Steel Green Body

2014 ◽  
Vol 936 ◽  
pp. 1694-1700
Author(s):  
Zhi Wei Li ◽  
Kai Yong Jiang ◽  
Fei Wang ◽  
Ji Liang Zhang
Keyword(s):  
Particle Size ◽  
Stainless Steel ◽  
Microwave Heating ◽  
Powder Particle ◽  
Microwave Power ◽  
Arc Discharge ◽  
Steel Powder ◽  
Powder Particle Size ◽  
Auxiliary Heating ◽  
316 Stainless Steel

This paper mainly introduces the mechanism of microwave heating: electric conduction loss, eddy current loss and arc discharge. The microwave heating behavior of 316 stainless steel powder body which made by gel casting was investigated in the paper. Experiments on different microwave power, powder particle size, and the content of auxiliary heating material showed that the smaller the powder particle size, the larger microwave power and auxiliary heating materials help 316 stainless steel body for sintering.

scholarly journals Selective laser sintering of polystyrene: a single-layer approach

2017 ◽  
Vol 47 (1) ◽  
pp. 2-8 ◽  
Author(s):  
Dieter Strobbe ◽  
Sasan Dadbakhsh ◽  
Leander Verbelen ◽  
Peter Van Puyvelde ◽  
Jean-Pierre Kruth
Keyword(s):  
Selective Laser Sintering ◽  
Single Layer ◽  
Laser Sintering

Formability of the Layer Additive Ceramic Part

2008 ◽  
Vol 594 ◽  
pp. 241-248 ◽  
Author(s):  
Fwu Hsing Liu ◽  
Yunn Shiuan Liao ◽  
Hsiu Ping Wang
Keyword(s):  
Surface Roughness ◽  
Laser Scanning ◽  
Selective Laser Sintering ◽  
Single Layer ◽  
Dimensional Accuracy ◽  
Scanning Speed ◽  
Laser Sintering ◽  
Single Line ◽  
Laser Scanning Speed ◽  
Silica Slurry

The material in powder state has long been used by selective laser sintering (SLS) for making rapid prototyping (RP) parts. A new approach to fabricate smoother surface roughness RP parts of ceramic material from slurry-sate has been developed in this study. The silica slurry was successfully laser-gelling in a self-developed laser sintering equipment. In order to overcome the insufficient bonding strength between layers, a strategy is proposed to generate ceramic parts from a single line, a single layer, to multi-layers of gelled cramic in this paper. It is found that when the overlap of each single line is 25% and the over-gel between layers is 30%, stronger and more accurate dimensional parts can be obtained under a laser power of 15W, a laser scanning speed of 250 mm/s, and a layer thickness of 0.1 mm. The 55:45 wt. % of the proportion between the silica powder and silica solution results in suitable viscosity of the ceramic slurries without precipitation. Furthermore, the effects of process parameters for the dimensional accuracy and surface roughness of the gelled parts are investigated and appropriate parameters are obtained.

Fabrication of Polycaprolactone Bone Tissue Engineering Scaffolds Using Selective Laser Sintering

2004 ◽  
Author(s):  
Brock Partee ◽  
Scott J. Hollister ◽  
Suman Das
Keyword(s):  
Tissue Engineering ◽  
Human Tissue ◽  
Cell Attachment ◽  
Porous Scaffold ◽  
Selective Laser Sintering ◽  
Laser Sintering ◽  
Processing Parameter ◽  
Tissue Engineering Scaffolds ◽  
Porous Architecture ◽  
Regenerate Tissue

Tissue engineering combines principles of the life sciences and engineering to replace and repair damaged human tissue. Present practice generally requires the use of porous, bioresorbable scaffolds to serve as temporary 3D templates to guide cell attachment, differentiation, proliferation, and subsequent regenerate tissue formation. Such scaffolds are anticipated to play an important role in allowing physicians to simultaneously reconstruct and regenerate damaged human tissue such as bone, cartilage, ligament and tendon. Recent research strongly suggests the choice of scaffold material and its internal porous architecture significantly influence regenerate tissue structure and function. However, a lack of versatile biomaterials processing and fabrication methods capable of meeting the complex geometric and compositional requirements of tissue engineering scaffolds has slowed progress towards fully testing these promising findings. It is widely accepted that layered manufacturing methods such as selective laser sintering (SLS) have the potential to fulfill these needs. Our research aims to investigate the viability of using SLS to fabricate tissue engineering scaffolds composed of polycaprolactone (PCL), one of the most widely investigated biocompatible, bioresorbable materials for tissue engineering applications. In this work, we report our recent progress on porous scaffold design and fabrication, optimal SLS processing parameter development using systematic factorial design of experiments, and structural characterization via optical microscopy.

Sign in / Sign up

Export Citation Format

Share Document