The Influence of Inner Component and Topographical Properties on Tribological Parameters of Injection-Moulded Microparts

The Influence of Inner Component and Topographical Properties on Tribological Parameters of Injection-Moulded Microparts
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内部组件和形貌特性对注塑微型零件摩擦学参数的影响

DOI:
10.1155/2014/321674
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发表时间:
2014
影响因子:
2.1
通讯作者:
Drummer
Drummer
中科院分区:
工程技术4区
文献类型:
--
作者:
Fischer;Drummer

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摩擦学参数取决于内部组件的特性,这些特性可能随所用聚合物熔体的温度-时间行为而变化。这种温度-时间行为可以受到动态模具温度控制的影响。本文提出了一种新的动态回火概念,它可以通过在指定的时间点在两个不同的回火模具区域内移动模具腔来实现目标温度-时间控制。通过模具温度和等温保温时间的变化影响温度-时间的发展,生产出具有不同内部构件性能的微拉伸棒。为了显示内部部件性能对摩擦学参数的影响,进行了销盘磨损试验。此外,还进行了不同表面形貌的摩擦学试验,研究了不同表面形貌对摩擦学参数的影响。结果表明,微零件的摩擦学性能主要受近层皮肤性质的影响,而近层皮肤的性质受不同模具温度的影响。等温保温时间的变化对所检查的材料没有显著影响。圆盘表面形貌更明显的粗糙度不仅显示出更高的测量摩擦学参数值,而且在一般情况下表现出不同的磨损行为。
Tribological parameters are dependent upon inter alia, inner component properties which may vary with the temperature-time behaviour of the polymer melt used. This temperature-time behaviour can be influenced by dynamic mould temperature control. The present paper presents a new dynamic tempering concept, which enables a targeted temperature-time control via shifting a mould cavity within two different tempered mould areas at a defined point in time. By influencing the temperature-time development by means of a mould temperature and isothermal holding time variation, micro tensile bars with different inner component properties are produced. To show the influence of inner component properties on tribological parameters, pin-on-disc wear tests are performed. Furthermore, tribological tests with different surface topographies are performed to show the influence of topographical properties on tribological parameters. Results indicate that the tribological properties of microparts are mainly influenced by the nature of the skin near layers, which can be influenced by the application of different mould temperatures. Variations in the isothermal holding time show no significant impact on the material examined. A more distinct roughness of the disc surface topography not only shows higher values for the measured tribological parameters but also different wear behaviour in general.
DOI: 10.1155/2014/218761
发表时间: 2014
影响因子: 2.1
作者:
Fischer;Leisen;Merken;Jungmeier;Drummer
通讯作者: Drummer
聚合物摩擦学:技术中的基础和研究 - 重新 - 变化 - schmierung
DOI: --
发表时间: 1985
期刊:
影响因子: --
作者:
H. Uetz;J. Wiedemeyer
通讯作者: J. Wiedemeyer
DOI: --
发表时间: 2006
期刊: --
影响因子: --
作者:
Iroon Polytechniou-
通讯作者: Iroon Polytechniou-