The approaches to design and manufacturing of large-sized marine machinery parts by direct laser deposition
Rudolf Korsmik, Igor Tsybulskiy, А. А. Родионов, Olga Klimova-Korsmik, Maria Gogolukhina, Sergei Ivanov, Grigoriy Zadykyan, Р.В. Мендагалиев
Abstract
This article shows several aspects of additive manufacturing via direct laser deposition of machinery parts. The redesigning methods of product manufactured by conventional technologies are considered, taking into account the stress-strain state of a sample manufactured by the DLD-method. Besides modeling methods allow obtaining a product of required geometry, the experience of applying the topological optimization method of structure is demonstrated. The product with optimized design has reliability characteristics close to the original solid version. The differences in the product microstructure obtained by the DLD-method from the structure after casting and thermomechanical processing are shown. The mechanical properties of built-up material are comparable to the same properties after casting and rolling. Economic evaluation of DLD introduction was held. A criterion of advisability replacement to DLD-method of manufacturing is determined. The results prove attractiveness of digital laser technologies application in shipbuilding.