Manufacturing of High-Performance Bi-Metal Bevel Gears by Combined Deposition Welding and Forging

verfasst von: Anna Chugreeva, Maximilian Mildebrath, Julian Diefenbach, Alexander Barroi, Marius Lammers, Jörg Hermsdorf, Thomas Hassel, Ludger Overmeyer, Bernd Arno Behrens
Abstract: The present paper describes a new method concerning the production of hybrid bevel gears using the Tailored Forming technology. The main idea of the Tailored Forming involves the creation of bi-metal workpieces using a joining process prior to the forming step and targeted treatment of the resulting joint by thermo-mechanical processing during the subsequent forming at elevated temperatures. This improves the mechanical and geometrical properties of the joining zone. The aim is to produce components with a hybrid material system, where the high-quality and expensive material is located in highly stressed areas only. When used appropriately, it is possible to reduce costs by using fewer high-performance materials than in a component made of a single material. There is also the opportunity to significantly increase performance by combining special load-tailored high-performance materials. The core of the technology consists in the material-locking coating of semi-finished parts by means of plasma-transferred-arc welding (PTA) and subsequent forming. In the presented investigations, steel cylinders made of C22.8 are first coated with the higher-quality heat-treatable steel 41Cr4 using PTA-welding and then hot-formed in a forging process. It could be shown that the applied coating can be formed successfully by hot forging processes without suffering any damage or defects and that the previous weld structure is completely transformed into a homogeneous forming-typical structure. Thus, negative thermal influences of the welding process on the microstructure are completely neutralized.
Organisationseinheit(en): Institut für Umformtechnik und Umformmaschinen
Institut für Werkstoffkunde
Externe Organisation(en): Laser Zentrum Hannover e.V. (LZH)
Typ: Artikel
Journal: Metals
Band: 8
ISSN: 2075-4701
Publikationsdatum: 11.2018
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Allgemeine Materialwissenschaften
Elektronische Version(en): https://doi.org/10.3390/met8110898 (Zugang: Offen)
https://doi.org/10.15488/4634 (Zugang: Offen)
: Details im Forschungsportal „Research@Leibniz University“

BibTeX

@article{db1a427095e14ed59a63ee273ec8bada,
title = "Manufacturing of High-Performance Bi-Metal Bevel Gears by Combined Deposition Welding and Forging",
abstract = "The present paper describes a new method concerning the production of hybrid bevel gears using the Tailored Forming technology. The main idea of the Tailored Forming involves the creation of bi-metal workpieces using a joining process prior to the forming step and targeted treatment of the resulting joint by thermo-mechanical processing during the subsequent forming at elevated temperatures. This improves the mechanical and geometrical properties of the joining zone. The aim is to produce components with a hybrid material system, where the high-quality and expensive material is located in highly stressed areas only. When used appropriately, it is possible to reduce costs by using fewer high-performance materials than in a component made of a single material. There is also the opportunity to significantly increase performance by combining special load-tailored high-performance materials. The core of the technology consists in the material-locking coating of semi-finished parts by means of plasma-transferred-arc welding (PTA) and subsequent forming. In the presented investigations, steel cylinders made of C22.8 are first coated with the higher-quality heat-treatable steel 41Cr4 using PTA-welding and then hot-formed in a forging process. It could be shown that the applied coating can be formed successfully by hot forging processes without suffering any damage or defects and that the previous weld structure is completely transformed into a homogeneous forming-typical structure. Thus, negative thermal influences of the welding process on the microstructure are completely neutralized.",
keywords = "Bi-metal bevel gear, Die forging, Hot deformation, Tailored forming",
author = "Anna Chugreeva and Maximilian Mildebrath and Julian Diefenbach and Alexander Barroi and Marius Lammers and J{\"o}rg Hermsdorf and Thomas Hassel and Ludger Overmeyer and Behrens, {Bernd Arno}",
note = "Funding information: This research was funded by the German Research Foundation (DFG, Deutsche Forschungsgemeinschaft) within the framework of the Collaborative Research Centre (Sonderforschungsbereich SFB 1153, Projektnummer: 252662854, Teilprojekt A4, B2), which is promoted by the DFG.",
year = "2018",
month = nov,
doi = "10.3390/met8110898",
language = "English",
volume = "8",
journal = "Metals",
issn = "2075-4701",
publisher = "Multidisciplinary Digital Publishing Institute",
number = "11",
}