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Hardening-related deformations of gear wheels after vacuum carburising and quenching in gas

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The purpose of modern surface hardening technology is obtaining reproducible, precisely planned parameters of the carburized layer, minimizing the negative phenomena that result in dimensional changes after hardening and making it possible to determine the nature and magnitude of these changes. This concerns mainly the concept of single-piece flow in heat treatment applied for the purposes of mass production, employing a special autonomous 4D Quenching chamber for high pressure gas quenching (HPGQ). The main components of the 4D Quenching chamber include a system of cooling nozzles surrounding the processed item and providing a uniform inflow of cooling gas from all directions (3D) and a table rotating together with the item processed, contributing to uniform cooling (4D). Within the framework of this paper there was studied the impact of gear wheel quenching in a 4D Quenching chamber using nitrogen at pressure of 6 and 10 bar on changes in geometry. Geometric measurements of facewidth of gear, hole diameter and outside diameter were performed before and after carburization and quenching. The results obtained allowed us to determine the impact of quenching pressure inside a 4D Quenching chamber on dimensional changes in gear wheels analyzed. The thermo-chemical treatment resulted in a decrease in outside diameters and hole diameters measured and an increase in facewidth of gears.
Twórcy
  • Institute of Machine Tools and Production Engineering, Faculty of Mechanical Engineering, Lodz University of Technology, 1/15 Stefanowskiego Street, 90-924 Łódź, Poland
autor
  • Institute of Machine Tools and Production Engineering, Faculty of Mechanical Engineering, Lodz University of Technology, 1/15 Stefanowskiego Street, 90-924 Łódź, Poland
autor
  • Institute of Machine Tools and Production Engineering, Faculty of Mechanical Engineering, Lodz University of Technology, 1/15 Stefanowskiego Street, 90-924 Łódź, Poland
autor
  • Institute of Machine Tools and Production Engineering, Faculty of Mechanical Engineering, Lodz University of Technology, 1/15 Stefanowskiego Street, 90-924 Łódź, Poland
Bibliografia
  • 1. Atraszkiewicz R., Januszewicz B., Kaczmarek Ł., Stachurski W., Dybowski K. and Rzepkowski A. High pressure gas quenching: Distortion analysis in gears after heat treatment. Materials Science & Engineering A, 558, 2012, 550–557.
  • 2. Chajda J. and Grzelka M.: The algorithm of the gears measurement with a CMM. Proc. of XVI IMEKO World Congress, Wien , Austria 2000, 51–56.
  • 3. Dybowski K., Sawicki J., Kula P., Januszewicz B., Atraszkiewicz R. and Lipa S. The effect of the quenching method on the deformations size of gear wheels after vacuum carburizing. Archives of Metallurgy and Materials, 61(2B), 2016, 1057–1062.
  • 4. Gawroński Z., Sawicki J. Technological surface layer selection for small module pitches of gear wheels working under cyclic contact loads. Materials Science Forum, 513, 2006, 69–74.
  • 5. Gawroński Z., Malasiński A. and Sawicki J. Elimination of galvanic copper plating process used in hardening of conventionally carburized gear wheels. International Journal of Automotive Technology, 11(1), 2010, 127–131.
  • 6. Gräfen W., Edenhofer B. New developments in thermo-chemical diffusion processes. Surface & Coatings Technology, 200, 2005, 1830–1836.
  • 7. Gräfen W., Hornung M., Irretier O. and Rink M. Applications of low-pressure carburizing with high temperatures (1000°C to 1050°C) in industrial practice. Haerterei-Technische Mitteilungen, 62(3), 2007, 97–102.
  • 8. Grzelka M. The accuracy of the gear’s measurement with the Coordinate Measuring Machine. Measurement Automation Monitoring, 2, 2004, 18–22.
  • 9. Grzelka M. The gear’s measurement with the CMM. Technical Transactions - Mechanics, 7, 2010, 33–40.
  • 10. Heuer V., Loeser K., Schmitt G. and Ritter K. Integration of Case Hardening into the Manufacturing Line. AGMA Technical Paper, 11FTM23, 2011, 1–12.
  • 11. IHI Machinery and Frnace Co. In-line heat treatment!? Next-generation heat treatment equipment. IHI Engineering Review, 44(2), 2012, 50–53.
  • 12. Korecki M., Fujak W., Olejnk J., Stankiewicz M. and Wołowiec-Korecka E. Patent Application No EP 16000164.0, 2016.
  • 13. Korecki M., Wołowiec-Korecka E. and Brewka A. Unicase Master - In-line, high-volume, low-distortion, precision case hardening for automotive, transmission and bearing industry. Proc. of 3rd International Conference on Heat Treatment and Surface Engineering in Automotive Applications, Prague, Czech Republic, 2016.
  • 14. Korecki M., Wołowiec-Korecka E. and Glenn D. Single-piece, high-volume, low-distortion case hardening of gears, Thermal Processing, 9/10, 2016, 32-39.
  • 15. Korecki M., Wołowiec-Korecka E. In-line, high-volume, low-distortion, precision case hardening for automotive, transmission and bearing industry. Proc. of 23rd IFHTSE Congress, Savannah, USA 2016, 1–7.
  • 16. Kula P., Dybowski K., Wolowiec E. and Pietrasik R. ”Boost-diffusion” vacuum carburising – Process optimisation. Vacuum, 99, 2014, 175–179.
  • 17. Ratajczyk E. Coordinate measuring technique. Warsaw University of Technology Academic Publishing, 2005.
Uwagi
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-4b520c78-6bf1-4450-9f86-16c28e9ade0b
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