J.Wang School of Mechanical
,
Manufacturing and Medical Engineering
,
Queensland University of Technology
,
GPO Box 2434
,
Brisbane
,
Qld. 4001
,
Australia
金属学报(英文版)
An experimental investigation is outlined for the CO 2 laser cutting process of metallic coated sheet steels, GALVABOND. It shows that by proper control of the cutting parameters, good quality cuts are possible at high cutting rate. Visual examination indicates that when increasing the cutting rate to as high as 5000 mm/min (about 100 times that suggested previously), kerfs of better quality can be achieved. Some kerf characteristics such as the width, heat affected zone and dross in terms of the process parameters are also discussed. A statistical analysis has arrived at a recommendatio on the optimum cutting parameters forprocessing GALVABOND.
关键词:
laser cutting
,
null
,
null
武伟超
,
王永军
,
张新娟
,
王俊彪
,
魏生民
兵器材料科学与工程
为确定激光切割工艺对TC4钛合金板材疲劳性能的影响，对其进行激光切割试验，从切缝表面形貌和元素成分变化、热影响区及微观组织、试件的疲劳性能及疲劳断口等方面进行了研究。结果表明：激光切割TC4钛合金的切缝表面存在大量熔融金属凝固后形成的沟槽和微观裂纹，激光切割产生的热影响区构成了疲劳源区，导致激光切割试件的疲劳寿命大幅下降；激光切割工艺应用在对零件疲劳寿命有一定要求的领域里时，应采取一定措施去除切割热影响区。
关键词:
TC4
,
钛合金
,
激光切割
,
微观组织
,
疲劳性能
