基于超快激光的PCD超硬材料加工研究  

Research on Processing of PCD Superhard Materials Based on Ultrafast Laser

作　　者：郝生财 曹康 王海滨 贾云海[1] 郭建梅[1] HAO Shengcai;CAO Kang;WANG Haibin;JIA Yunhai;GUO Jianmei(Beijing Key Laboratory of Electro Discharge Machining Technology,Beijing Institute of Electromachining Co.,Ltd.,Beijing 100191,China;Beijing City University,Beijing 100083,China)

机构地区：[1]北京市电加工研究所有限公司,电火花加工技术北京市重点实验室,北京100191 [2]北京城市学院,北京100083

出　　处：《电加工与模具》2023年第5期44-48,共5页Electromachining & Mould

摘　　要：选取聚晶金刚石(PCD)为研究对象,利用1064 nm皮秒激光采用不同激光功率、重复频率、加工速度、填充线宽、加工次数等参数进行加工,并对各区域的加工深度和烧蚀现象进行观测。结果表明,不同激光参数对PCD的烧蚀程度不同,其加工深度与激光功率和加工次数呈正相关,与加工速度和填充线宽呈负相关。此外,加工PCD后出现了石墨化现象,证明皮秒激光对PCD超硬材料的烧蚀机制为石墨化机制。Polycrystalline diamond(PCD)was selected as the research object and processed using 1064 nm picosecond laser with different laser power,repetition rate,processing speed,filling line width,processing times and other parameters,and the processing depth and ablation phenomenon in each region were observed.The result indicated that different laser parameters have different degrees of ablation on PCD,and the processing depth is positively correlated with laser power and processing times,negatively correlated with processing speed and filling line width.In addition,graphitization phenomenon occurred after processing PCD,indicating that the ablation mechanism of picosecond laser on PCD superhard materials is graphitization mechanism.

关 键 词：超快激光加工 聚晶金刚石 超硬材料 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]