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Chapter

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Title

Assessment of Threads Used in the Aviation Industry Based on the Microstructure Analysis

Authors

[ 1 ] Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ 2 ] Instytut Technologii Mechanicznej, Wydział Inżynierii Mechanicznej, Politechnika Poznańska | [ SzD ] doctoral school student | [ P ] employee

Scientific discipline (Law 2.0)

[2.9] Mechanical engineering

Year of publication

2024

Chapter type

chapter in monograph / paper

Publication language

english

Keywords
EN
  • Screw Thread
  • Inconel 718
  • Microstructure
  • Surface Topography
Abstract

EN The machining of difficult-to-cut materials such as Inconel 718 certainly poses many problems. Threads made in this type of material are a special case, as their manufacture is one of the most demanding turning operations. The high cutting forces occurring during this process often cause deformations of thin-walled parts. The authors of the present study decided to evaluate the quality of threads used in aircraft engines. Microscopic metallographic tests were carried out for three types of external threads, differing mainly in their profile angles. Micrographs of selected thread fragments were taken and then compared with respect to the differences and similarities. In order to better explain some of the deformations, these images were compared with surface topography images. The influence of temperature and cutting forces on the overall microstructure image was noticed. Attention was also drawn to the burr that occurred in trapezoidal threads. The side surfaces of threads with larger angles were characterized by the presence of regular irregularities. These changes were confirmed on the surface topography images. Potential reasons for the obtained results were indicated.

Date of online publication

28.03.2024

Pages (from - to)

43 - 55

DOI

10.1007/978-3-031-56467-3_4

URL

https://link.springer.com/chapter/10.1007/978-3-031-56467-3_4

Book

Advances in Manufacturing IV. Volume 4 - Measurement and Control Systems: Digitalization, Sustainability and Industry Applications

Presented on

International Scientific-Technical Conference Manufacturing 2024, 14-16.05.2024, Poznań, Polska

Ministry points / chapter

20

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