基于硬质合金钎焊技术的刀具刃口修复研究  

Research on Cutting Edge Repair of Machine Tool Based on Carbide Brazing Technology

作　　者：雷歌 林添利 代波 Lei Ge;Lin Tianli;Dai Bo

机构地区：[1]吉利学院,成都市641400 [2]大唐联诚信息系统技术有限公司 [3]库柏西安熔断器有限公司

出　　处：《工具技术》2024年第11期114-117,共4页Tool Engineering

基　　金：教育部高校学生司就业实习基地项目(20230102342);2022年四川省教育厅第三批高等学校省级课程思政示范项目。

摘　　要：当刀具刃口受到高强度冲击会出现崩口、断裂、磨损等破坏,为提高刃口剪切强度和修复后的外观效果,研究基于硬质合金钎焊技术的刀具刃口修复技术。使用主要成分为碳化钨的YG8硬质合金作为母材,确定钎料及钎剂后,在钎焊设备的作用下修复刀具刃口。通过万能试验机测试不同降温方法、不同焊缝宽度以及不同升温速率下修复后机械设备刀具刃口性能。试验结果显示,石膏粉冷却刀具后,采用硼砂处理多余钎剂的方式能够提升刃口剪切强度,且该方法修复后的刃口外观良好,焊缝宽度小于0.1mm,升温速率为30℃/s时,修复后刀具刃口剪切强度较高,修复效果较好。The cutting edge of mechanical equipment will be damaged by breakage,fracture,wear and other damages under high strength impact.In order to improve the shear strength of cutting edge and the appearance effect after repair,the repair technology of cutting edge based on carbide brazing technology is studied.Using YG8 carbide with tungsten carbide as the main component as the base material,the filler metal and brazing agent are determined,and the cutting edge is repaired under the action of brazing equipment.The cutting edge properties repaired under different cooling methods,different weld widths and different heating rates are tested by universal testing machine.The test results show that the method of gypsum powder cooling tool and borax treating excess brazing agent can improve the cutting edge shear strength,and the repaired cutting edge appearance is good,the width of the weld is less than 0.1mm,the heating rate is 30℃/s,the repaired mechanical equipment cutting edge shear strength is higher,the repair effect is better.

关 键 词：硬质合金 钎焊技术 刀具刃口 修复研究 钎料及钎剂 

分 类 号：TG71[金属学及工艺—刀具与模具] TH16[机械工程—机械制造及自动化]