Wear of Shaped Surfaces of PVD Coated Dies for Clinching

Džupon, Miroslav; Kaščák, Ľuboš; Spišák, Emil; Kubík, René; Majerníková, Janka

doi:10.3390/met7110515

Cited by 9 publications

(5 citation statements)

References 61 publications

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“…The lower sheet is supported by a rigid die. As a result, both sheets undergo plastic deformation, leading to the creation of a mechanically interlocked structure known as the clinched point [52,53].…”

Section: Numerical Simulationmentioning

confidence: 99%

Clinching of High-Strength Steel Sheets with Local Preheating

et al. 2023

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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.

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Section: Numerical Simulationmentioning

confidence: 99%

Clinching of High-Strength Steel Sheets with Local Preheating

et al. 2023

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“…Based on current knowledge, there are four categories of parameter that are vital for accurate prediction in numerical simulation [ 23 , 24 , 25 ], namely: process, material, geometry, and numerical parameters. The impact of the above-mentioned parameters on forming simulation accuracy is studied and analyzed by several researchers.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Thickness Analysis of TRIP Steel under Various Degrees of Deformation in Bulge Test

et al. 2022

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To design a reliable forming process it is necessary to determine the mechanical and formability properties of the processed material, which are used as input parameters for forming simulations. High-strength steel is irreplaceable as a material for producing the deformation zones of current automobiles. This type of steel can be processed by conventional or unconventional forming methods. In the sheet forming process, the material is usually under uniaxial and biaxial stress. The bulge test is utilized for determination of biaxial stress–strain curves, which are often used as input material data for forming simulations. In this work, numerical simulations of bulge tests using TRIP RAK 40/70 steel were performed to study the impact of yield criteria and hardening laws on the accuracy of thickness prediction of the deformed steel sheet. Additionally, the impact of different solvers and integration schemes on the thickness prediction was tested. Furthermore, the impact of various degrees of deformation (various dome heights) on thickness prediction accuracy was evaluated. Numerical results showed a good correlation with experimental data. When the Hill90 yield criterion was used, the software with implicit solver was more accurate in predicting thickness compared to software with explicit integration scheme, in most cases. In addition, the thickness prediction of parts with lower deformation was more accurate compared to parts with greater deformation (higher dome height).

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“…The quality of the surface has a major impact on the functionality of the entire device. One of the main criteria in assessing the quality of the surface, but also the machinability of the material is the roughness [Dzupon 2017, Draganovska 2018, Krenicky 2015& 2020. Roughness represents the height of the unevenness from a perfectly and ideally smooth surface and arises as a result of the tool used during machining and finishing.…”

Section: Introductionmentioning

confidence: 99%

3d Evaluation of the Topography of the Surface by Abrasive Water Jet Machining Technology

Mitaľ¹,

Spišák²,

Mulidrán³

et al. 2021

MM SJ

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The article deals with contact and non-contact evaluation of surface roughness created by water jet cutting technology (AWJ). Non-contact surface measurement was performed using an LPM laser profilometer. The values measured by the laser profilometry method were compared with the values measured by the contact method, the Mitutoyo SJ 400 roughness meter. Six samples were produced. Three in stainless steel and three in structural steel. In order to achieve a different surface topography, different feed rates of the cutting head were used on the samples, which was reflected in the quality of the resulting surface. The evaluated parameters were the average arithmetic deviation of the assessed profile and the largest height of the profile inequality.

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Wear of Shaped Surfaces of PVD Coated Dies for Clinching

Cited by 9 publications

References 61 publications

Clinching of High-Strength Steel Sheets with Local Preheating

Clinching of High-Strength Steel Sheets with Local Preheating

Experimental and Numerical Thickness Analysis of TRIP Steel under Various Degrees of Deformation in Bulge Test

3d Evaluation of the Topography of the Surface by Abrasive Water Jet Machining Technology

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