| 新型多孔金属结合剂金刚石磨盘研制与磨削实验研究 |
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| 引用本文： | 赫青山,;苏宏华,;骆伟伟. 新型多孔金属结合剂金刚石磨盘研制与磨削实验研究[J]. 金刚石与磨料磨具工程, 2014, 0(4): 31-35 |
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| 作者姓名： | 赫青山, 苏宏华, 骆伟伟 |
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| 作者单位： | [1]河南工业大学机电工程学院,郑州450007; [2]南京航空航天大学机电学院,南京210016 |
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| 基金项目： | 江苏省“六大人才高峰”支持计划（2013–ZBZZ–029） |
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| 摘 要： | 针对引入孔隙结构后,多孔金属结合剂超硬磨具耐用度降低的问题,提出利用超硬磨料钎焊技术改善胎体对金刚石磨料的把持力,以提高工具寿命,并成功研制出一种新型多孔金属结合剂金刚石磨盘。测试分析了新型磨盘的节块性能,并通过磨削花岗岩安溪红635试验,对新型磨盘的磨削效果进行评价。实验结果表明:新型磨盘节块强度在100MPa左右,孔隙率为60%,孔隙在节块内部分布均匀,且金属结合剂与金刚石表面发生了牢固的化学冶金结合;磨削石材的表面粗糙度Ra0.77~1.59μm,磨盘的磨削比达到760。
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| 关 键 词： | 金刚石磨盘 钎焊 多孔结构 硬脆材料 |
Development and grinding experiment of new porous metal-bonded diamond grinding disc |
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| Affiliation: | HE Qing-shan,SU Hong-hua,LUO Wei-wei( 1. College of Mechanical and Electrical Engineering, Henan University of Technology , Zhengzhou 450007, China;2. College o J Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China) |
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| Abstract: | To solve the problem of low life produced by introducing porous structure into the porous metalbonded diamond tool,improving holding force between matrix and diamond by brazing super-abrasive technology is proposed.One new porous metal-bonded diamond grinding disc was developed and the segment performance of the disc was analyzed.Grinding experiments of granite 635 were carried out to evaluate the grinding effect of the new disc.The results show that the strength of segments is about 100 MPa,that the porosity of segments is 60%,and that pores are uniformly distributed in the segments.Firm metallurgychemistry reaction exists on the contact surface between diamond and metal bond.Besides,the machined surface of granite 635 has Ravalues from 0.77μm to 1.59μm.The grinding ratio of diamond grinding disc is up to 760. |
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| Keywords: | diamond grinding disc brazing porous structure hard and brittle materials |
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