The maximum size of additively manufactured (AM) components is restricted due to the confined building space of the manufacturing machines. Component separation and subsequent joining can be an effective way of manufacturing larger components using AM processes. For joining of AM components, adhesive bonding provides great potential for not constraining the adherend’s geometry, as long as the adhesive can still be applied to the adhesive surfaces of the adherends. This work investigates the effectiveness and applicability of additively manufactured inner channels to improve the adhesive application. A circular adhesive single lap joint between a laser-based powder bed fusion (PBF-LB) component made of AlSi10Mg and a cold drawn aluminum round bar was considered. The PBF-LB components were designed with varying geometric complexity to implement different adhesive application concepts. Subsequently, the bonded joints were subjected to static tensile tests. The fracture strength of joints where the adhesive was applied by injection into AM inner channels exceeds the fracture strength of joints where the adhesive was injected into geometries manufacturable by subtractive machining, and also exceeds the fracture strength of joints where the adhesive was pre-applied.

由于制造机器的有限建筑空间，增材制造 (AM) 部件的最大尺寸受到限制。组件分离和后续连接是使用 AM 工艺制造更大组件的有效方法。对于 AM 组件的连接，粘合剂提供了巨大的潜力，可以不限制被粘物的几何形状，只要粘合剂仍然可以应用于被粘物的粘合表面。这项工作调查了增材制造的内部通道在改善粘合剂应用方面的有效性和适用性。考虑了由 AlSi10Mg 制成的基于激光的粉末床熔合 (PBF-LB) 部件与冷拔铝圆棒之间的圆形粘合剂单搭接接头。PBF-LB 组件的设计具有不同的几何复杂性，以实现不同的粘合剂应用概念。随后，对粘合接头进行静态拉伸试验。通过将粘合剂注入增材制造内部通道的接头的断裂强度超过了将粘合剂注入可通过减材加工制造的几何形状的接头的断裂强度，也超过了预涂粘合剂的接头的断裂强度。