Pereira A, Hernández P, Martinez J, Pérez J A, Mathia T G
Faculty of Industrial Engineering, University of Vigo, Vigo, Spain.
Scanning. 2014 Jan-Feb;36(1):39-52. doi: 10.1002/sca.21083. Epub 2013 Feb 27.
In order to ensure flexibility and rapid new product development, the mold industry made use of soft materials for cavity inserts in injection molds. However, materials of this kind are prone to wear. This article analyzes the topographic characterization of the surface and wear processes in injection molds cavities. Two materials have been used to produce the cavities: aluminum alloy EN AW‐6082 T4 and copper alloy Cu Zn39 Pb3. The surface topography was measured with the use of optical interferometry profiling technology; roughness and surface parameters were determined according to ISO 4287, ISO 25178, and EUR 15178N. In order to complete this research, an experimental part with different thicknesses and shapes was designed, and cavity inserts of aluminum and copper were made. Polyamide PA6, with 30% fiberglass reinforcement, was employed in the experimental procedure. Measurements of cavity mold surfaces were performed after 9,200 cycles on each mold and at different locations on the mold. The surface measurement was made with a white light vertical scanning interferometry, also known as coherence scanning interferometry (ISO DIS 25178‐604). The results are analyzed and differences between the two types of cavity inserts materials are discussed.
为确保灵活性和快速进行新产品开发，模具行业在注塑模具的型腔镶件中使用了软质材料。然而，这类材料容易磨损。本文分析了注塑模具型腔表面的形貌特征和磨损过程。已使用两种材料制作型腔：铝合金EN AW‐6082 T4和铜合金Cu Zn39 Pb3。使用光学干涉轮廓测量技术测量表面形貌；粗糙度和表面参数根据ISO 4287、ISO 25178和EUR 15178N确定。为完成本研究，设计了具有不同厚度和形状的实验部件，并制作了铝和铜的型腔镶件。实验过程中使用了含30%玻璃纤维增强的聚酰胺PA6。在每个模具上经过9200次循环后，在模具的不同位置对型腔模具表面进行测量。表面测量采用白光垂直扫描干涉测量法，也称为相干扫描干涉测量法（ISO DIS 25178‐604）。对结果进行分析，并讨论两种型腔镶件材料之间的差异。
