激光焊接参数对牙科用钴铬合金穿透深度的影响  

Effect of laser welding parameters on penetration depths of dental Co-Cr alloy

作　　者：吴泽明 孙方方[1] 聂蓉蓉[1] 孟翔峰[1] WU Zeming;SUN Fangfang;NIE Rongrong;MENG Xiangfeng(Department of Prosthodontic,Nanjing Stomatological Hospital,Medical School of Nanjing University,Nanjing 210008,China;The Affiliated Stomatologieal Hospital of Suzhou Vocational Health College,Suzhou 215000,China)

机构地区：[1]南京大学医学院附属口腔医院/南京市口腔医院修复科,江苏南京210008 [2]苏州卫生职业技术学院附属口腔医院,江苏苏州215000

出　　处：《东南大学学报（医学版）》2018年第4期624-628,共5页Journal of Southeast University(Medical Science Edition)

基　　金：南京市医学科技发展资金资助项目(QRX17175)

摘　　要：目的:评估不同激光焊接参数对钴铬合金穿透深度的影响。方法:制作96个6.0 mm×6.0 mm×10 mm钴铬合金试件,将其中每两个试件10 mm×6 mm的面相对,固定在特制的夹具上。选择0.3、0.6、0.9、1.2 mm光斑直径,分别在6、12、18 J及1、1.5、2.0、2.5 k W的激光焊接参数下,对48组试件进行焊接。将焊接面置于体式显微镜下进行观测、拍摄,将拍摄所获得的照片导入Photoshop软件,对焊接面上的穿透深度进行测量。采用多元回归分析对数据进行统计学分析。结果:穿透深度与光斑直径呈负相关(P<0.05),与功率呈正相关(P<0.05),与脉冲时间呈正相关(P<0.05)。结论:本实验推导出穿透深度的公式为穿透深度=0.353-1.02×光斑直径+0.527×功率+0.046×脉冲时间。Objective： To evaluate the effects of the laser parameters on the penetration depths of Co-Cr alloys.Methods： 96 Co-Cr Alloy specimens with the volume of 6. 0 mm × 6. 0 mm × 10 mm were mad by casting. The10 mm × 6 mm faces of every two specimens were relatively fixed on the special jig. The cast alloy specimens were butted against each other and laser welded at their interface using various powers（ 1. 0,1. 5,2,2. 5 k W）,energy（ 6,12,18 J） and spot diameters（ 0. 3,0. 6,0. 9,1. 2 mm）. After welding,the welding surface morphology was surveyed under the Stereo Microscope and the penetration depths were measured by Photoshop software. Results：The penetration depths under different power were significantly different（ P〈0. 05）. Along with the changes of pulse time,the penetration depths changed proportionally（ P〈0. 05）. Spot diameter was the most critical factors to effect penetration depths,followed by power and pulse time. Conclusion： The formula of penetration depth is deduced： Penetration depth = 0. 353-1. 02 × spot diameter ＋ 0. 527 × power ＋ 0. 046 × pulse time.

关 键 词：钴铬合金 能量 功率 脉冲时间 光斑直径 穿透深度 

分 类 号：R783.2[医药卫生—口腔医学]