| ZHANG Er-geng,WANG Qin-xue,ZHANG Suo-huai.Performance of PVD-coated Tool in High Speed Milling of CoCrMo Alloy[J],46(3):262-266 |
| Performance of PVD-coated Tool in High Speed Milling of CoCrMo Alloy |
| Received:November 07, 2016 Revised:March 20, 2017 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2017.03.039 |
| KeyWord:high-speed milling cathode arc coating tools TiAlSiN coating red hardness cutting wear |
| Author | Institution |
| ZHANG Er-geng |
School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai , China |
| WANG Qin-xue |
School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai , China |
| ZHANG Suo-huai |
School of Mechanical Engineering, Shanghai Institute of Technology, Shanghai , China |
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| Abstract: |
| The work aims to improve cutting performance of coated carbide-tipped alloy cutters by studying milling performance of physical vapor deposition (PVD) coated carbide-tipped alloy cutters in at high speed and dry environment. TiN, TiAlN and TiAlSiN coated carbide-tipped alloy cutter heads were prepared on surfaces of carbide substrates by cathode arc plasma method. Microhardness, thickness and average friction coefficient were determined by indirect measurement of the cemented carbide disks deposited together with the coating system. A comparative test was performed to CoCrMo alloy at high-speed milling between PVD coatings and uncoated tools. The mechanical properties of the coating obtained were as follows, TiAlSiN micro hardness was up to 3800HV, friction coefficient 0.3, average thickness of TiAlN coating 2 μm, and adhesive force of TiN, TiAlN and TiAlSiN coatings indirectly measured 60, 58 and 42 N. TiAlSiN coating exhibited better cutting performance than that of TiN and TiAlN coatings, the high-speed cutting duration of TiN tool was the shortest provided with the same cutting parameters. The average attrition value of TiAlSiN was 0.1895, and TiN 0.3047. The addition of Al and Si to the coating greatly increases the usability of cutters, enhances wear resistance and red hardness during milling, greatly extends the their service life, which provides higher application value for high-speed cutting environment and cutters selection. TiAlSiN coatings of high hardness, good abrasion re-sistance and the best cutting performance are applicable to high-speed milling. |
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