| 钎焊CBN砂轮与陶瓷CBN砂轮磨削粉末冶金高温合金的加工性能对比研究 |
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| 引用本文： | 张曦,李本凯,丁文锋. 钎焊CBN砂轮与陶瓷CBN砂轮磨削粉末冶金高温合金的加工性能对比研究[J]. 金刚石与磨料磨具工程, 2021, 41(4): 64-71. DOI: 10.13394/j.cnki.jgszz.2021.4.0010 |
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| 作者姓名： | 张曦 李本凯 丁文锋 |
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| 作者单位： | 南京航空航天大学 机电学院,南京 210016 |
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| 摘 要： | 采用钎焊CBN砂轮和陶瓷CBN砂轮进行FGH96粉末冶金高温合金磨削对比试验,从磨削力与温度、表面粗糙度以及砂轮磨损等方面对CBN砂轮磨削性能进行评价.结果表明:钎焊CBN砂轮磨削力接近或低于陶瓷CBN砂轮的;在较低进给速度下(≤360 mm/min),钎焊CBN砂轮磨削温度与陶瓷CBN砂轮的相近,在较高进给速度下(≥...
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| 关 键 词： | 粉末冶金高温合金 钎焊CBN砂轮 陶瓷CBN砂轮 砂轮磨损 磨削表面 |
Comparative study on machining behavior of brazed CBN wheel and vitrified CBN wheel during grinding powder metallurgy superalloy |
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| ZHANG Xi,LI Benkai,DING Wenfeng. Comparative study on machining behavior of brazed CBN wheel and vitrified CBN wheel during grinding powder metallurgy superalloy[J]. Diamond & Abrasives Engineering, 2021, 41(4): 64-71. DOI: 10.13394/j.cnki.jgszz.2021.4.0010 |
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| Authors: | ZHANG Xi LI Benkai DING Wenfeng |
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| Affiliation: | College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | The comparative grinding test of FGH96 powder metallurgy superalloy was carried out with brazed CBN wheel and ceramic CBN wheel. The grinding performance of CBN wheel was evaluated from the dimensions of grinding force and temperature, surface roughness and wheel wear.The results showed that the grinding force of brazed CBN wheel was close to or lower than that of ceramic CBN wheel, the grinding temperature of brazed CBN wheel was similar to that of ceramic CBN wheel at lower feed speed (≤360 mm/min), and the grinding temperature of ceramic CBN wheel was significantly higher than that of brazed CBN wheel at higher feed speed (≥ 540 mm/min). Under normal grinding conditions, the surface roughness of brazed CBN grinding wheel was lower than that of ceramic CBN grinding wheel, and the surface roughness Ra was lower than 0.800 μm, the average surface roughness Ra was 0.508 μm and 0.529 μm. Material adhesion and abrasion wear occurred in the abrasive grains on the working face of brazed CBN abrasive wheel, and the grinding surface appears material smeared. While for that of vitrified CBN abrasive wheel, in addition to wear, adhesion and grinding wheel blockage, the grinding surface was easy to form deep grooves due to grain breakage and falling off, which reduced the machined surface quality. Generally, the grinding performance of brazed CBN abrasive wheel on FGH96 was better than that of vitrified CBN abrasive wheel. |
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