Manufacturing of high-performance Bi-metal bevel gears by combined deposition welding and forging

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Chugreeva, A.; Mildebrath, M.; Diefenbach, J.; Barroi, A.; Lammers, M. et al.: Manufacturing of high-performance Bi-metal bevel gears by combined deposition welding and forging. In: Metals 8 (2018), Nr. 11, 898. DOI: https://doi.org/10.3390/met8110898

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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.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2018
Appears in Collections:An-Institute

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pos. country downloads
total perc.
1 image of flag of Germany Germany 143 71.50%
2 image of flag of United States United States 24 12.00%
3 image of flag of France France 10 5.00%
4 image of flag of China China 6 3.00%
5 image of flag of No geo information available No geo information available 5 2.50%
6 image of flag of Vietnam Vietnam 2 1.00%
7 image of flag of Nigeria Nigeria 1 0.50%
8 image of flag of Korea, Republic of Korea, Republic of 1 0.50%
9 image of flag of India India 1 0.50%
10 image of flag of Ireland Ireland 1 0.50%
    other countries 6 3.00%

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