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Analysis of the Deterioration Mechanisms of Tools in the Process of Forging Elements for the Automotive Industry from Nickel–Chromium Steel in Order to Select a Wear-Limiting Coating
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Analysis of the Deterioration Mechanisms of Tools in the Process of Forging Elements for the Automotive Industry from Nickel–Chromium Steel in Order to Select a Wear-Limiting Coating
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Analysis of the Deterioration Mechanisms of Tools in the Process of Forging Elements for the Automotive Industry from Nickel–Chromium Steel in Order to Select a Wear-Limiting Coating
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Journal Article
Analysis of the Deterioration Mechanisms of Tools in the Process of Forging Elements for the Automotive Industry from Nickel–Chromium Steel in Order to Select a Wear-Limiting Coating
2025
Overview
This paper provides a detailed analysis of the operation of representative forging tools (in the context of using various surface engineering techniques) used in the process of the hot forging of nickel–chromium steel elements. The influence of the microstructure and hardness of the material on the durability of the tools is also discussed, which is important for understanding the mechanisms of their wear. The research showed that the standard tools used in the process (only after nitriding) as a reference point worked for the shortest period, making an average of about 1400 forgings. In turn, the tools coated with the CrAlSiN coating allowed for the production of the largest number of forgings, reaching 2400 pieces, with uniform wear. In comparison, the tools with the CrAlBN coating made 1900 forgings. Three-dimensional scanning analysis showed that CrAlSiN- and CrAlBN-coated tools have lower volumetric wear, around 41–43 mm3, compared to 59 mm3 for nitrided tools. For a better comparison of tool life, the authors proposed the Z-factor, as the material loss to the number of forgings. The CrAlSiN coating showed the lowest material loss, despite a slightly higher Z-factor value compared to the CrAlBN coating. The use of hybrid coatings such as CrAlSiN and CrAlBN significantly reduces tool wear while increasing service life compared to tools that are nitrided only.
