Search academic texts

Information × Registration Number 0219U100114, 0115U006682 , R & D reports Title Development of the electron beam welding technology and repair of the blade-type fans, power and exhaust tracks of gas turbine engines popup.stage_title Head Nesterenkov Volodymyr M., Доктор технічних наук Registration Date 24-01-2019 Organization E.O.Paton Elektric Welding Institute National Academy of scinces of Ukraine popup.description2  The repair technology of restoration by means electron beam welding of damaged turbine engine low-pressure compressor blades (Ti-alloy VT-6) with local or expanded defects of leading edge, as well as replacement of separate damaged guide vanes of high-pressure compressor stator (high-temperature martensite steel 15Cr16Co5Ni2MoW) was developed. It was ascertained that defect-free formation of repair welded joints at the replacement of damaged guide vanes is attained by using electron beam welding in a pulsed mode. Results of metallographic evaluation of weld structure of the produced repair joints, as well as of strength tests allows to make a conclusion that developed EBW repair technology provides getting welds with a quite sound structure. The defect-free formation of welded repair joints at the replacement of combustion chamber case labyrinth seal assembly is attained applying welding of interlock joint by horizontal electron beam in horizontal plane. The results of mechanical properties analysis of the combustion chamber case repair welded joints №2 after their local thermal treatment by means electron beam confirmed the availability and efficiency of this method for provision of satisfactory structural strength. Product Description popup.authors popup.nrat_date 2020-04-02 Close