Виготовлення тракту охолодження вдосконаленої конструкції для камери згоряння рідинного ракетного двигуна за допомогою адитивних технологій (original) (raw)

Виготовлення тракту охолодження вдосконаленої конструкції для камери згоряння рідинного ракетного двигуна за допомогою адитивних технологій

2021, Aerospace technic and technology

The creation of complex structural elements of aircraft using additive technologies is promising and is widely used since such elements have many design and technological advantages over the collection of individual finished parts. However, it requires the solution of many scientific and technical problems to obtain products of high accuracy and density, develop a technological process, work out modes, and sometimes develop a new design of products. When the angles of inclination of the inclined surfaces are more than 45 °, in the manufacture of parts using the technology of selective laser melting, special conditions arise that cause some restrictions. Since the tracks that form the bottom layer (down-skin) of the inclined surface largely lie not on the previous layer of the metal part, but on the powder surrounding the part, the melt pool "falls through" into the powder, the melt pool breaks through, disrupting the track continuity. As a consequence, the bottom layer (do...