Džupon, M.; Kaščák, Ľ.; Cmorej, D.; Čiripová, L.; Mucha, J.; Spišák, E. Clinching of High-Strength Steel Sheets with Local Preheating. Appl. Sci.2023, 13, 7790.
Džupon, M.; Kaščák, Ľ.; Cmorej, D.; Čiripová, L.; Mucha, J.; Spišák, E. Clinching of High-Strength Steel Sheets with Local Preheating. Appl. Sci. 2023, 13, 7790.
Džupon, M.; Kaščák, Ľ.; Cmorej, D.; Čiripová, L.; Mucha, J.; Spišák, E. Clinching of High-Strength Steel Sheets with Local Preheating. Appl. Sci.2023, 13, 7790.
Džupon, M.; Kaščák, Ľ.; Cmorej, D.; Čiripová, L.; Mucha, J.; Spišák, E. Clinching of High-Strength Steel Sheets with Local Preheating. Appl. Sci. 2023, 13, 7790.
Abstract
Clinching is a manufacturing method of mechanical 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 various grades and thickness of materials. Especially in the automotive industry, clinching is an alternative to spot resistance welding. However, the load-bearing capacity of clinched joints is comparatively lower when compared to resistance spot welded joints. This research aimed to enhance the load-carrying capacity of clinched joints. Experimental tests were conducted on clinched joints with locally modified microstructures to optimize their placement within the joint. The microstructure distribution in the clinched joint region was analysed using light and scanning electron microscopy, as well as microhardness measurements. Two material grades, micro-alloyed steels HX420LAD+Z and dual-phase ferritic-martensitic steels HCT600X+Z, were tested. Each grade underwent five groups of ten samples, subject to identical experimental conditions of local heating by resistance spot welding (RSW) and clinching. The application of RSW to the clinched joint area resulted in increase of load-bearing capacity for both joined types of materials.
Keywords
clinching; spot welding; local heating; load-bearing capacity; metallography
Subject
Engineering, Mechanical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
