Scientists from NUST MISIS and specialists from "ODK-Kuznetsov" (part of the United Engine Corporation) have proposed using a new combined technology for manufacturing molds for casting gas turbine engine parts.
The process involves creating a mold blank using inkjet 3D printing with an organic binder. Then, the mold is repeatedly impregnated with a special suspension of fine silica particles, which strengthens the structure and fills the pores.
After that, sintering is carried out at a temperature of about 1200°C, which removes the organic binder and forms strong ceramic bonds. After that, the mold is ready for vacuum metal casting.
The new approach combines the advantages of 3D printing and high-temperature sintering and allows creating strong molds that retain their geometry after sintering. This is necessary so that the cast parts made in them fully correspond to the required dimensions.
Earlier, www1.ru reported that work on the "Baikal" aircraft has reached a dead end: it will never see the light of day.
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