Casting of microstructured shark skin surfaces and possible applications on aluminum casting parts

作     者：Todor Ivanov Andreas Bührig-Polaczek Uwe Vroomen 

作者机构：Foundry Institute of RWTHAachen University 

出 版 物：《China Foundry》 (中国铸造（英文版）)

年 卷 期：2011年第8卷第1期

页      面：62-65页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the German Research Foundation DFG within the Cluster of Excellence "Integrative Production Technology for High-Wage Countries 

主　　题：扔的投资 microstructured 出现 鲨鱼皮肤 

摘      要：Within the project Functional Surfaces via Micro-and Nanoscaled Structures which is part of the Cluster of Excellence Integrative Production Technology established and financed by the German Research Foundation (DFG),an investment casting process to produce 3-dimensional functional surfaces down to a structural size of 1μm on near-net-shape-casting parts has been *** common way to realize functional microstructures on metallic surfaces is to use laser ablation,electro discharge machining or micro *** handicap of these processes is their limited *** approach of this project to raise the efficiency is to use the investment casting process to replicate microstructured surfaces by moulding from a laser-microstructured grand master *** main research objective deals with the investigation of the single process steps of the investment casting process with regard to the moulding *** results concerning making of the wax pattern,suitability of ceramic mould and core materials for casting of an AlSi7Mg0.3 alloy as well as the knock-out behavior of the shells are *** using of the example of an intake manifold of a gasoline race car engine,a technical shark skin surface has been realized to reduce the drag of the intake *** intake manifold consists of an air-restrictor with a defined inner diameter which is microstructured with technical shark skin *** this reason the inner diameter cannot be drilled after casting and demands a very high accuracy of the casting part.A technology for the fabrication and demoulding of accurate microstructured castings are *** factors of different moulding steps of the macroscopic casting part as well as the microscopic riblet structure have been examined as well.