Direct metal deposition is a further development of laser cladding technology. DMD process allows to build complex parts basing on their 3D model, by applying deposited beads layer by layer. ILWT is advancing this technology to produce large-scale parts for gas-turbine engines.
During the deposition process the focused laser beam heats substrate and forms a melt metal pool. Metal powder is carried by transport gas through nozzle, partially melts in melt pool and forms deposited bead. After number of repeating passes complex 3D object if formed.
Features:
High productivity - up to 15 kg/h
Low porosity < 0.05%
Ability to produce objects with gradient properties
Fine-graded structure
Mechanical properties at level of hot-rolled metal
Wide range of used allows: Ni, Ti, Fe, Co, Cu - based
Ability to produce large-scale parts
Studies of the technological parameters and atmosphere influence on structure formation in complex profile products are carried out in ILWT. Also preliminary technologies of direct laser deposition are practiced on Co, Fe, Ni and Ti alloys. Initial powder materials and produced samples are analyzed using new equipment for optical and scanning electron microscopy, XRD. Also, all produced samples are tested on mechanical properties.
Direct Laser Metal Deposition presentation