Analysis of Temperature Gradients during Simultaneous Laser Beam Melting of Polymers

被引：2

作者：

Laumer, Tobias ^{[1
,3
,4
]}

Stichel, Thomas ^{[1
,4
]}

Amend, Philipp ^{[1
,4
]}

Roth, Stephan ^{[1
,3
,4
]}

Schmidt, Michael ^{[1
,2
,3
,4
]}

机构：

[1] Bayer Laserzentrum GmbH Blz, Konrad Zuse Str 2-6, D-91052 Erlangen, Germany

[2] Friedrich Alexander Univ Erlangen Nurnberg, Inst Photon Technol LPT, D-91052 Erlangen, Germany

[3] Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Grad Sch Adv Opt Technol SAOT, D-91052 Erlangen, Germany

[4] CRC Collaborat Res Ctr 814 Addit Mfg, D-91052 Erlangen, Germany

来源：

8TH INTERNATIONAL CONFERENCE ON LASER ASSISTED NET SHAPE ENGINEERING (LANE 2014) | 2014年 / 56卷

关键词：

Additive Manufacturing; Simultaneous Laser Beam Melting; Multi-Material Parts; Process Qualification;

D O I：

10.1016/j.phpro.2014.08.159

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

By simultaneous laser beam melting (SLBM), different polymer powders can be processed to multi-material parts, which offers the potential to enlarge the field of application for conventional LBM. In a SLBM process, a powder bed consisting of different polymers and therefore with different melting and crystallization temperatures is deposited. Besides the use of infrared emitters for preheating the lower melting polymer, a CO2 laser distributes the necessary preheating temperature of the higher melting polymer. In the last step, a thulium fibre laser distributes the energy necessary for melting the two preheated powders simultaneously. In order to analyze the temperature gradients of the process on the powder surface and in deeper layers, a high resolution thermal imaging system and thermocouples are used. (C) 2014 The Authors. Published by Elsevier B.V.

引用

页码：167 / 175

页数：9

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