不烧滑板磨削加工用Fe-Ni-Cu-Sn金属基金刚石工具的制备与性能  

Preparation and Performance of Fe-Ni-Cu-Sn Metal Bond Diamond Tool for Grinding Unfired Sliding Plate

作　　者：呼丹明 段锋[1] 丁冬海 李杰 尹育航[1,2] 彭凯 HU Danming;DUAN Feng;DING Donghai;LI Jie;YIN Yuhang;PENG Kai(School of Materials Science and Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China;Monte-Bianco Diamond Tool Applications Co.,Ltd.,Foshan 528313,Guangdong,China)

机构地区：[1]西安建筑科技大学材料科学与工程学院,西安710055 [2]广东奔朗新材料股份有限公司,广东佛山528313

出　　处：《材料导报》2024年第10期175-181,共7页Materials Reports

摘　　要：Al_(2)O_(3)-C不烧滑板作为连铸功能耐火材料在炼钢领域中受到广泛应用,而金属结合剂金刚石工具在滑板磨削加工中起到关键作用。本工作通过热压烧结法制备Fe-Ni-Cu-Sn金属基胎体和Fe-Ni-Cu-Sn金属基金刚石工具,首先研究烧结温度、保温时间和烧结压力对金刚石工具胎体力学性能的影响,获得优化的胎体烧结工艺参数并为后续制备金刚石工具奠定基础;其次研究不同的金刚石磨料对金刚石工具力学性能及磨削不烧滑板性能的影响,通过研究金刚石的浓度、粒度、品级与加工工具磨削效率、寿命及锋利度的关系,从而得到磨削加工不烧滑板的金刚石工具中金刚石磨料的优化参数,通过SEM对金刚石工具表面胎体与金刚石磨料的结合状态、金刚石的磨损情况进行表征。实验结果表明:金刚石工具胎体的最佳烧结工艺参数是烧结温度、烧结压力和保温时间分别为785℃、170 MPa、240 s;金刚石工具中的金刚石磨料最优选择为金刚石浓度25%、粒度45/50、品级SMD35。Al2O 3-C unfired slide plate is widely used as the functional refractory materials of the continuous casting,and the metal binding diamond tools play a key role in the grinding of the slide plate.In this work,Fe-Ni-Cu-Sn metal matrix and diamond tools were prepared by hot pressing sintering.Firstly,the effects of sintering temperature,holding time and sintering pressure on the mechanical properties of diamond tool matrix were studied to obtain optimal parameters of sintering process needed by the subsequent preparation of diamond tools.Secondly,the effects of different diamond abrasives on the mechanical properties and performance for grinding unfired slide plate processing tools were studied.The optimal parameters of diamond abrasives in diamond tools for grinding unfired slide plate was obtained by studying the relationship between the concentration,particle size,grade of diamond and the grinding efficiency,life and sharpness of the processing tools.The bonding state of the matrix of the diamond tool and the diamond abrasive and the wear of the diamond were analyzed by SEM microstructure.The results show that the optimum sintering process parameters of diamond tool matrix are sintering temperature,holding time and sintering pressure of 785℃,170 MPa and 240 s,respectively.The optimal selection of diamond abrasive in diamond tools is that the diamond concentration is 25%,the particle size is 45/50,and the grade is SMD35.

关 键 词：烧结工艺 金刚石磨料 不烧滑板 磨削性能 

分 类 号：TG73[金属学及工艺—刀具与模具]