Expanding the Technological Possibilities of Multilayer Micro-Plasma Powder Deposition Process by Optimizing the Quality and Composition of Process Gases-Reference-Cited by-同舟云学术

Expanding the Technological Possibilities of Multilayer Micro-Plasma Powder Deposition Process by Optimizing the Quality and Composition of Process Gases

Published:2023-10-20 Issue:5 Volume:19 Page:89-99
ISSN:2413-4996
Container-title:Science and Innovation
language:
Short-container-title:Sci. innov.

Author:

CHERVIAKOV M.^ORCID,YAROVYTSYN O.^ORCID,KHRUSHCHOV H.^ORCID

Abstract

Introduction. Mastering the micro-plasma powder deposition (MPWD) technology for refurbishing parts of nickel-based super alloy aircraft gas turbine engine (GTE) has been remaining a relevant task of the Ukrainian air craft industry for, at least, 15 last years.Problem Statement. MPWD or subsequent heat treatment of GTE parts made of nickel-based super alloy after long-term operating hours, with high γ'-phase content, might reveal increased cracking susceptibility. The search for ways to optimize the welding deposition technology has shown the necessity to scrutinize the positive technological effect of rational choice of the quality and content of process (shielding, plasma and transporting) gases.Purpose. To study the effect of process gas content on the heat source parameters, the conditions of the formation of deposited metal and its quality.Material and Methods. Comparative study of the micro-plasma (PPS04 plasmatron, UPNS-304M welding machine) and TIG (VSVU-315 power source) arc heat parameters depending on welding current and process gas has been conducted by the conventional flow calorimetry technology. Comparative estimation of the total work piece heat input parameters has been made based on the previously developed methodology with registering the welding current parameters based on m-DAQ14 analog-to-digital converter (ADC).Results. The comparative research during MPWD of sample parts has shown that the content and quality of process gases can significantly (up to 2.5 times) affect the amount of heat transferred into the work piece and, respectively, the possibility to provide the technological strength of “base-deposited metal” welded joint.Conclusions. The industrial MPWD process optimization by the criteria of work piece heat input parameters, technological strength of “base-deposited metal” welded joint and filler powder consumption,by means of increasing argon (plasma and transporting gas) quality by other gases impurities content and switch to 90% Ar + 10% Н2 argonhydrogen mixture shielding gas has been established to be promising and expedient way to solve the problem.

Publisher

National Academy of Sciences of Ukraine (Co. LTD Ukrinformnauka) (Publications)

Subject

Law,Management of Technology and Innovation,Information Systems and Management,Computer Science Applications,Engineering (miscellaneous)

Reference27 articles.

1. Paton, B. E., Gvozdetskiy, V. S., Dudko, D. A. (1979). Micro-plasma welding. Kyiv [in Russian].

2. Gvozdetskiy, V. S. (1974). Welding arc contraction. Automatic welding, 2, 1-4 [in Russian].

3. Peychev, G. I. (2005). Repair of operation-worn cast turbine blades bandage shelve constructive elements made of JStype alloys. Aircraft and space technic and technology, 9(25), 221-223 [in Russian].

4. Yushchenko, K. A., Savchenko, V. S., Yarovitsyn, O. V., Nakonechny, A. A., Nastenko, G. F., Zamkovoj, V. E., Belozertsev, O. S., Andrejchenko, N. V. (2010). Development of the technology for repair microplasma powder cladding of flange platform faces of aircraft engine high-pressure turbine blades. The Paton Welding Journal, 8, 25-29.

5. Yushchenko, K. A.,Yarovytsyn, O. V. Technological advancement of refurbishment process for the aircraft GTE blade's upper bangade shelf. Complex target program of NAS Ukraine «Operation resource and safety problems of buildings and machine constructions», article digest on results achieved in 2010-2012. Paton EWI NAS Ukraine, Kyiv. 506-509 [In Ukrainian].