Rebuilding of Turbocharger Shafts by Hardfacing
This paper presents the results of structural tests and hardness measurements of rebuilding coatings manually applied by the gas tungsten arc welding (GTAW) method on damaged surfaces of steel shafts of turbochargers of automotive engines. Single- and double-layer coatings were applied in an argon a...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-08-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/15/16/5761 |
| _version_ | 1797443718394937344 |
|---|---|
| author | Bogdan Kupiec Zenon Opiekun Andrzej Dec |
| author_facet | Bogdan Kupiec Zenon Opiekun Andrzej Dec |
| author_sort | Bogdan Kupiec |
| collection | DOAJ |
| description | This paper presents the results of structural tests and hardness measurements of rebuilding coatings manually applied by the gas tungsten arc welding (GTAW) method on damaged surfaces of steel shafts of turbochargers of automotive engines. Single- and double-layer coatings were applied in an argon atmosphere by fusing a 1.2 mm diameter wire with a Fluxofil M58 flux core, using a current of 35A and an arc voltage of 8–9 V. The hardfacing resulted in coatings with a martensitic–bainitic structure with fine dispersed carbides rich in M23C6-type chromium. The hardness of the coatings on the rebuilt shafts averaged from about 740HV5 for the single-layer coating to about 770HV5 for the double-layer coating and was two times higher than the hardness of the tempered shafts without coatings. |
| first_indexed | 2024-03-09T13:01:06Z |
| format | Article |
| id | doaj.art-c312ad7b9bae4ec599f8a9efe7ee6355 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T13:01:06Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-c312ad7b9bae4ec599f8a9efe7ee63552023-11-30T21:54:02ZengMDPI AGMaterials1996-19442022-08-011516576110.3390/ma15165761Rebuilding of Turbocharger Shafts by HardfacingBogdan Kupiec0Zenon Opiekun1Andrzej Dec2Department of Casting and Welding, Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, PolandDepartment of Casting and Welding, Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, PolandDepartment of Casting and Welding, Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, PolandThis paper presents the results of structural tests and hardness measurements of rebuilding coatings manually applied by the gas tungsten arc welding (GTAW) method on damaged surfaces of steel shafts of turbochargers of automotive engines. Single- and double-layer coatings were applied in an argon atmosphere by fusing a 1.2 mm diameter wire with a Fluxofil M58 flux core, using a current of 35A and an arc voltage of 8–9 V. The hardfacing resulted in coatings with a martensitic–bainitic structure with fine dispersed carbides rich in M23C6-type chromium. The hardness of the coatings on the rebuilt shafts averaged from about 740HV5 for the single-layer coating to about 770HV5 for the double-layer coating and was two times higher than the hardness of the tempered shafts without coatings.https://www.mdpi.com/1996-1944/15/16/5761GTAW hardfacingflux-cored wireturbocharger shaft |
| spellingShingle | Bogdan Kupiec Zenon Opiekun Andrzej Dec Rebuilding of Turbocharger Shafts by Hardfacing Materials GTAW hardfacing flux-cored wire turbocharger shaft |
| title | Rebuilding of Turbocharger Shafts by Hardfacing |
| title_full | Rebuilding of Turbocharger Shafts by Hardfacing |
| title_fullStr | Rebuilding of Turbocharger Shafts by Hardfacing |
| title_full_unstemmed | Rebuilding of Turbocharger Shafts by Hardfacing |
| title_short | Rebuilding of Turbocharger Shafts by Hardfacing |
| title_sort | rebuilding of turbocharger shafts by hardfacing |
| topic | GTAW hardfacing flux-cored wire turbocharger shaft |
| url | https://www.mdpi.com/1996-1944/15/16/5761 |
| work_keys_str_mv | AT bogdankupiec rebuildingofturbochargershaftsbyhardfacing AT zenonopiekun rebuildingofturbochargershaftsbyhardfacing AT andrzejdec rebuildingofturbochargershaftsbyhardfacing |