Porous structure design and fabrication of metal-bonded diamond grinding wheel based on selective laser melting (SLM)
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High porosity will bring about a great deal of contributions for metal-bonded grinding wheels. In this research, cellular structures, including octahedron, truncated octahedron, and stellated octahedron, are chosen as porous structures for a grinding wheel and fabricated using selective laser melting (SLM) with diamond/AlSi10Mg mixed powders. Moreover, the microstructure and bonding condition of SLM-fabricated composite are investigated. Additionally, morphological properties, mechanical properties, and permeability of three different porous structures are studied and compared with each other based on experiment and simulation. It is revealed that the microstructure of SLM-fabricated composite exhibits anisotropic due to the layered manufacturing essence. Furthermore, the cladding state of diamond grits is good and strong interface forms between diamond and AlSi10Mg. Besides, both mechanical performance and permeability of octahedron structure are the best, making it a potential structure for a high-performance porous grinding wheel.
KeywordsPorous structure Metal bond Grinding wheel Selective laser melting Permeability Mechanical property
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Technical support from Beijing Longyuan AFS Co., Ltd., Kunshan Hiecise Heavy Machinery Co., Ltd., and the Institute of Process Engineering, Chinese Academy of Science is appreciated.
The research is funded by the National Science and Technology Major Project (No.2017ZX04007001), Shanghai Rising-Star Program (No.16QB1400900), Tsinghua University Initiative Scientific Research Program, and Tsinghua-RWTH Aachen Collaborative Innovation Funding.
- 5.Liu CJ, Ding WF, Yu TY, Yang CY (2018) Materials removal mechanism in high-speed grinding of particulate reinforced titanium matrix composites. Precis Eng 51:68–77. https://doi.org/10.1016/j.precisioneng.2017.07.012 CrossRefGoogle Scholar
- 6.Xu H, Liao CJ, Weng QM (2011) Experimental study on porous metal bonded diamond grinding wheels - the selection of porosity inducers and agglomeration’s parameter. Adv Mater Res 415-417:594–597. https://doi.org/10.4028/www.scientific.net/AMR.415-417.594 CrossRefGoogle Scholar
- 12.Mao JB, Zhang FL, Liao GC, Zhou YM, Huang HP, Wang CY, Wu SH (2014) Effect of granulated sugar as pore former on the microstructure and mechanical properties of the vitrified bond cubic boron nitride grinding wheels. Mater Des 60:328–333. https://doi.org/10.1016/j.matdes.2014.04.006 CrossRefGoogle Scholar
- 15.Song CJ, Ding WF, Xu JH, Chen ZZ (2012) Grinding performance of metal-bonded CBN wheels with regular pores. Appl Mech Mater 217-219:1857–1862. https://doi.org/10.4028/www.scientific.net/AMM.217-219.1857 CrossRefGoogle Scholar
- 18.Bobbert FSL, Lietaert K, Eftekhari AA, Pouran B, Ahmadi SM, Weinans H, Zadpoor AA (2017) Additively manufactured metallic porous biomaterials based on minimal surfaces: a unique combination of topological, mechanical, and mass transport properties. Acta Biomater 53:572–584. https://doi.org/10.1016/j.actbio.2017.02.024 CrossRefGoogle Scholar
- 19.Ahmadi SM, Yavari SA, Wauthle R, Pouran B, Schrooten J, Weinans H, Zadpoor AA (2015) Additively manufactured open-cell porous biomaterials made from six different space-filling unit cells: the mechanical and morphological properties. Mater 8:1871–1896. https://doi.org/10.3390/ma8041871 CrossRefGoogle Scholar
- 21.Tsopanos S, Mines RAW, Mckown S, Shen Y, Cantwell WJ, Brooks W, Sutcliffe CJ (2010) The influence of processing parameters on the mechanical properties of selectively laser melted stainless steel microlattice structures. J Manuf Sci Eng Trans ASME 132:041011. https://doi.org/10.1115/1.4001743 CrossRefGoogle Scholar
- 25.Sobieski W, Trykozko A (2014) Darcy’s and Forchheimer’s laws in practice - part 1: the experiment. Tech Sci 17(4):321–335Google Scholar
- 28.ISO 13314:2011(E). Mechanical testing of metals - ductility testing - compression test for porous and cellular metalsGoogle Scholar