研究

Fraunhofer IWS试验“更快一千倍” CBC 3D打印技术

德国研究所Fraunhofer IWS已经透露,它正在测试一个3D打印系统,该系统可能比当前基于镜像的激光制造技术“快一千倍”。

围绕高性能13千瓦的动态光束拉ser,’ the institute’s setup is said to be capable of rapidly generating different energy distribution patterns, and precisely printing the most demanding of materials. According to Fraunhofer IWS’ Andreas Wetzig, the technology “pushes the limits” of metal 3D printing, unlocking new alloys for use within the medical, electromobility and aerospace sectors.

完善“ CBC 3D打印”

最初由以色列公司开发Civan Lasers,Fraunhofer IWS的新安装设置本质上是一种连贯的光束组合或“ CBC” 3D打印的形式。该方法被认为是高功率激光过程的“圣杯”,涉及将激光器分解为放大器,以创建多个连贯的光线,然后将它们合并为强大的单光束。

在Civan Lasers的情况下,该公司开发了一种在部分梁中使用小相移的方法,以调节其能量分布模式。因此,与现有的激光器(将大部分能量释放到光束的中心中)相比,动态束激光器能够将零件分为复杂的“环”或“马蹄形”形状。

Theoretically, this was already possible using beam-deflecting optics or fast oscillating mirrors, albeit while taking a few milliseconds to realign each time. However, Civan Lasers’ approach is quicker, enabling a laser’s energy patterns to be adjusted in microseconds, thus it potentially allows dynamic beam shaping to be used within industrial-scale metal 3D printing for the very first time.

An engineer installing the 'Dynamic Beam Laser' from Jerusalem at Fraunhofer IWS in Dresden.
现在,“动态光束激光”已经从耶路撒冷运出,并安装在德累斯顿的Fraunhofer IWS。通过Fraunhofer IWS摄影。

Fraunhofer IWS和“ Shapeam”

作为“ Shapeam”项目的一部分,欧盟支持的更广泛的组成部分‘M-era.Net’计划,Civan Lasers现在已在Fraunhofer IWS的德累斯顿设施安装了新的自称为“ Civan”系统。与焊接专家的同事合作Laser Welding SolutionsShapeam团队表示,它最终旨在开发具有“改善材料特性”的钛和铝3D打印零件。

Specifically, the researchers intend to use dynamic beam shaping to eliminate component defects and overcome many of the existing challenges presented by crack-sensitive materials. In doing so, the team believes that it could also be possible to create metal parts with application-specific qualities, which are tailored to perform in outer space for instance, or implants with enhanced biocompatibility.

为了衡量动态光束激光器的功能,Fraunhofer IWS和Civan Lasers的专家首先计划在试图通过评估如何切割,连接或3D来识别其最终使用应用程序之前,在试图识别其最终使用应用程序之前进行基本测试打印通常难以处理的合金的各种对象。

尽管该项目仅始于2021年7月,但Fraunhofer IWS已经预测,Civan将在3D打印过程中对融化池动态提供“更快,更精确的控制”。在其他领域,该研究所还预计,在激光切割方面,动态束激光器将被证明是当前纤维激光器的两倍,同时又能以优异的边缘质量产生无毛刺的切割。

On September 14 2021, Fraunhofer IWS is set to hold a webinar, in which it’ll delve deeper into its experiments with potential industry and research partners, and those interested in testing the technology will be invited to use the CBC laser for their own applications, under the proviso that any subsequent findings will be presented at theLaser Symposium伊萨姆2021从2021年12月7日至9日。

两名在Fraunhofer IWS安装Civan 3D打印机的工程师。
预计新的“ civan”将在金属3D打印中解锁动态光束。通过Fraunhofer IWS摄影。

High-powered laser 3D printing

与在Fraunhofer IWS试验的基于CBC的系统不同,许多当前的金属3D打印机仅限于使用单模10 kW激光器。为了解决这个问题,制造商越来越多地使用多个高功率激光器和大型构建量适合其打印机,以创建具有工业规模的潜在应用的猛mm象机器。

考虑到这一点,SLM解决方案揭示了其强大的新NXG XII 6003D printeratFormNext连接去年。该系统专门设计了十二个1 kW激光器,专门设计用于为汽车或航空航天运营的人生产大型零件,并且已经吸引了“major European OEMs。”

Likewise,Farsoon Technologies推出了新的粉末床融合(PBF)3D打印机TCT亚洲2021,具有不少于八个1000W激光器。有两个设置,包括“ FS721M-8”和缩放的“ FS721M”版本,Farsoon的系统旨在使用户能够高效地提高其金属3D打印操作,从而提供特殊的汽车,工具和工业机会。

提名2021 3D印刷行业奖现在打开。您认为谁应该成为今年演出的入围名单?现在有你的发言权。

要了解最新的3D印刷新闻,请不要忘记订阅3D打印行业newsletter或跟随我们推特或喜欢我们的页面Facebook.

要深入研究添加剂制造,您现在可以订阅我们的YouTubechannel, featuring discussion, de-briefs and shots of 3D printing in-action.

Are you looking for a job in the additive manufacturing industry? Visit3D Printing Jobsfor a selection of roles in the industry.

Featured image shows an engineer installing Civan Laser’s ‘Dynamic Beam Laser’ at Fraunhofer IWS’ facility in Dresden. Photo via Fraunhofer IWS.