Selective laser melting for manufacturing of thin-walled porous elements

被引：84

作者：

Abele, Eberhard ^{[1
,3
]}

Stoffregen, Hanns A. ^{[1
,3
]}

Kniepkamp, Michael ^{[1
]}

Lang, Sebastian ^{[2
]}

Hampe, Manfred ^{[2
]}

机构：

[1] Tech Univ Darmstadt, Inst Prod Management Technol & Machine Tools PTW, D-64287 Darmstadt, Germany

[2] Tech Univ Darmstadt, Thermal Proc Engn TVT, D-64287 Darmstadt, Germany

[3] LOEWE Res Ctr AdRIA, D-64289 Darmstadt, Germany

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2015年 / 215卷

关键词：

Selective laser melting; Additive manufacturing; Porosity; Thin walls; MICROSTRUCTURE; COMPONENTS; POROSITY; MODULUS; DENSITY;

D O I：

10.1016/j.jmatprotec.2014.07.017

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

Selective laser melting (SLM) as additive manufacturing technology is studied in this paper for the generation of thin-walled elements with defined porosity characteristics. Building accuracy is studied and optimised regarding the manufacturing of thin walls. Leakage tests were performed to analyse the effect of wall thickness on gastightness. The influences of the SLM process parameters laser power, scan speed, and hatch distance on porosity and mechanical characteristics are investigated using a DoE approach. Porosity, permeability, pore size distribution, and tensile strength were analysed. Statistical significant regression models were found for porosity and tensile strength which allow tailored properties within the studied design space. A maximum porosity of 17.35% with a permeability of 2560 E-12 m(2) was obtained. Macro pore sizes showed a unimodal pore size distribution with peaks between 7 and 16 mu m. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：114 / 122

页数：9

共 33 条

[1]

[Anonymous], 2012, 23 ANN INT SOLID FRE

[2]

[Anonymous], 2010, P 16 INT S EL

[3]

Manufacture of Co-Cr dental crowns and bridges by selective laser Melting technology This paper presents the successful application of the selective laser melting technology in dental frameworks manufacturing from Co-Cr alloy using Phenix PM 100T Dental Machine over a production period of 14 months [J].