Ensuring of technological sovereignty of Russia in metallurgy and machine building

The article presents the results of the implementation of three strategically important programs for the creation of aircraft gas turbine engines of the new generation PD-14, PD-8 and PD-35 for the purpose of solving the issue of ensuring the technological sovereignty of the Russian Federation in civil aircraft engine manufacturing. Considered are developments which are priority for civil rocket engineering, namely: launch vehicle with a reusable returnable first stage and a fully reusable single-stage launch vehicle for vertical take-off and landing made using multilayer composite materials. Provided are new technologies for implementation by short-pulse laser fusion of ceramic coatings based on boron carbide with microhardness up to 43 GPa and bismuth-alloyed surface layers of steel with unique tribotechnical characteristics: excellent wear resistance and ultra-low dry friction coefficient (up to 0.03). To ensure technological sovereignty in metallurgy, presented are Russian innovative technologies for the repair and production of new mold copper plates of continuous casting machines with wear-resistant composite coatings and recovering of the thickness of copper plates by multipass friction stir lap welding.