Introduction

Grid structures are used to save weight without compromising the stability of components. In addition, these structures can also perform functions such as shielding, guiding or separating fluids - e.g. in medical devices, reactors, heat exchangers, fuel cells and other microfluidic applications.

Example 1: slotted nozzle with free-form outer contour, variable cross-sectional area and square grid structure with 100 μm wall thickness; material 1.4404 (316L)

Geometrically highly complex and functional metal lattice structures can be produced precisely and in a resource-saving manner using micro laser sintering technology. Compared to conventional production technologies, the saving in raw material leads to a reduction in component weight of up to 60%. The design freedom is almost unlimited - even 3D lattice structures with varying geometries on the inside or undercuts can be produced. The wall thickness, which significantly determines the precision of filigree lattice structures, can be reduced to 30 μm. The minimum achievable wall thickness depends heavily on the topology of the component and the raw material used.

Micro laser sintering of lattice structures opens up completely new dimensions in component design, for example through a property curve within a component in terms of geometry or density. The new possibilities allow innovations such as optimized flow properties in microfluidics or the integration of additional functions. The lack of joints between individual components also ensures greater stability of the filigree lattice structures.

The components shown were manufactured on a DMP50 GP Micro Laser Sintering machine from 3D MicroPrint GmbH.