选择性激光熔化
可制造性设计
共形映射
材料科学
机械工程
计算机冷却
注塑成型
表面粗糙度
工程类
复合材料
数学
微观结构
电子设备和系统的热管理
数学分析
作者
Maciej Mazur,Martin Leary,Matthew McMillan,Joe Elambasseril,Milan Brandt
出处
期刊:Rapid Prototyping Journal
[Emerald (MCB UP)]
日期:2016-04-18
卷期号:22 (3): 504-518
被引量:155
标识
DOI:10.1108/rpj-06-2014-0075
摘要
Purpose Additive manufacture (AM) such as selective laser melting (SLM) provides significant geometric design freedom in comparison with traditional manufacturing methods. Such freedom enables the construction of injection moulding tools with conformal cooling channels that optimize heat transfer while incorporating efficient internal lattice structures that can ground loads and provide thermal insulation. Despite the opportunities enabled by AM, there remain a number of design and processing uncertainties associated with the application of SLM to injection mould tool manufacture, in particular from H13/DIN 1.2344 steel as commonly used in injection moulds. This paper aims to address several associated uncertainties. Design/methodology/approach A number of physical and numerical experimental studies are conducted to quantify SLM-manufactured H13 material properties, part manufacturability and part characteristics. Findings Findings are presented which quantify the effect of SLM processing parameters on the density of H13 steel components; the manufacturability of standard and self-supporting conformal cooling channels, as well as structural lattices in H13; the surface roughness of SLM-manufactured cooling channels; the effect of cooling channel layout on the associated stress concentration factor and cooling uniformity; and the structural and thermal insulating properties of a number of structural lattices. Originality/value The contributions of this work with regards to SLM manufacture of H13 of injection mould tooling can be applied in the design of conformal cooling channels and lattice structures for increased thermal performance.
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