Clinching of High-Strength Steel Sheets with Local Preheating
Clinching is a manufacturing method of mechanically joining two or more materials without the use of heat or additional components. This process relies on high plastic deformation to create a secure bond. Clinching technology is widely used for joining materials of various grades and thicknesses. Es...
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MDPI AG
2023-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/13/7790 |
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| author | Miroslav Džupon Ľuboš Kaščák Denis Cmorej Lucia Čiripová Jacek Mucha Emil Spišák |
| author_facet | Miroslav Džupon Ľuboš Kaščák Denis Cmorej Lucia Čiripová Jacek Mucha Emil Spišák |
| author_sort | Miroslav Džupon |
| collection | DOAJ |
| description | Clinching is a manufacturing method of mechanically joining two or more materials without the use of heat or additional components. This process relies on high plastic deformation to create a secure bond. Clinching technology is widely used for joining materials of various grades and thicknesses. Especially in the automotive industry, clinching is an alternative to resistance spot welding. However, the load-bearing capacity of clinched joints is comparatively lower when compared to resistance spot-welded joints. This research aimed to increase the load-carrying capacity of clinched joints. To enhance the load-bearing capacity of the clinched joints, localized modification of the microstructure was carried out, primarily focusing on the neck area of the joint. The alteration of the microstructure within the clinched joint was accomplished through the application of localized heating using the resistance spot welding method. The microstructure distribution in the clinched joint region was analyzed using light and scanning electron microscopy, as well as microhardness measurements. Two material grades, micro-alloyed steel HX420LAD+Z and dual-phase ferritic–martensitic steel HCT600X+Z, were tested. Each grade underwent five groups of ten samples, which were subjected to identical experimental conditions of local heating by resistance spot welding (RSW) and clinching. The utilization of RSW on the clinched joint region resulted in an average enhancement of 17% in the load-carrying capacity for material HCT600X+Z, and an average increase of 25% for material HX420LAD+Z. |
| first_indexed | 2024-03-11T01:46:48Z |
| format | Article |
| id | doaj.art-196c821bf3794603800f0f6dcf69ff4b |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T01:46:48Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-196c821bf3794603800f0f6dcf69ff4b2023-11-18T16:11:29ZengMDPI AGApplied Sciences2076-34172023-07-011313779010.3390/app13137790Clinching of High-Strength Steel Sheets with Local PreheatingMiroslav Džupon0Ľuboš Kaščák1Denis Cmorej2Lucia Čiripová3Jacek Mucha4Emil Spišák5Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, SlovakiaInstitute of Technology and Material Engineering, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, SlovakiaInstitute of Technology and Material Engineering, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, SlovakiaInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, SlovakiaDepartment of Mechanical Engineering, Rzeszow University of Technology, al. Powst. Warszawy 8, 35-959 Rzeszów, PolandInstitute of Technology and Material Engineering, Faculty of Mechanical Engineering, Technical University of Košice, Mäsiarska 74, 040 01 Košice, SlovakiaClinching is a manufacturing method of mechanically joining two or more materials without the use of heat or additional components. This process relies on high plastic deformation to create a secure bond. Clinching technology is widely used for joining materials of various grades and thicknesses. Especially in the automotive industry, clinching is an alternative to resistance spot welding. However, the load-bearing capacity of clinched joints is comparatively lower when compared to resistance spot-welded joints. This research aimed to increase the load-carrying capacity of clinched joints. To enhance the load-bearing capacity of the clinched joints, localized modification of the microstructure was carried out, primarily focusing on the neck area of the joint. The alteration of the microstructure within the clinched joint was accomplished through the application of localized heating using the resistance spot welding method. The microstructure distribution in the clinched joint region was analyzed using light and scanning electron microscopy, as well as microhardness measurements. Two material grades, micro-alloyed steel HX420LAD+Z and dual-phase ferritic–martensitic steel HCT600X+Z, were tested. Each grade underwent five groups of ten samples, which were subjected to identical experimental conditions of local heating by resistance spot welding (RSW) and clinching. The utilization of RSW on the clinched joint region resulted in an average enhancement of 17% in the load-carrying capacity for material HCT600X+Z, and an average increase of 25% for material HX420LAD+Z.https://www.mdpi.com/2076-3417/13/13/7790clinchingspot weldinglocal heatingload-bearing capacitymetallography |
| spellingShingle | Miroslav Džupon Ľuboš Kaščák Denis Cmorej Lucia Čiripová Jacek Mucha Emil Spišák Clinching of High-Strength Steel Sheets with Local Preheating Applied Sciences clinching spot welding local heating load-bearing capacity metallography |
| title | Clinching of High-Strength Steel Sheets with Local Preheating |
| title_full | Clinching of High-Strength Steel Sheets with Local Preheating |
| title_fullStr | Clinching of High-Strength Steel Sheets with Local Preheating |
| title_full_unstemmed | Clinching of High-Strength Steel Sheets with Local Preheating |
| title_short | Clinching of High-Strength Steel Sheets with Local Preheating |
| title_sort | clinching of high strength steel sheets with local preheating |
| topic | clinching spot welding local heating load-bearing capacity metallography |
| url | https://www.mdpi.com/2076-3417/13/13/7790 |
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