Forming Process Simulation of Bimetallic Billet by Extrusion for Rew Method

Schrek, Alexander; Brusilová, Alena; Sejč, Pavol; Vanko, Branislav

doi:10.36547/ams.27.4.1254

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…The test was carried out on an Instron 1195 universal testing machine at a crosshead speed of 5 mm•min −1 . The method of manufacturing bimetallic semi-finished products and finished elements is described in more detail in articles [26,27]. Unlike the results presented in paper [20], elements with modified geometry and dimensions were used to ensure better mechanical properties for RES joints.…”

Section: Methodsmentioning

confidence: 99%

Use of Sn60Pb40 Solder in Resistance Element Soldering Technology

Sejč

Vanko

Schrek

et al. 2023

Metals

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This work presents a new technology for joining dissimilar materials, Resistance Element Soldering (RES). This technology is fundamentally based on Resistance Element Welding (REW) technology; the difference is that the presented RES uses a bimetallic element composed of a hard Cu shell and a core made of Sn60Pb40 solder. The RES technology using the Cu/Sn60Pb40 bimetallic element was tested when joining a galvanized steel sheet (HX220BD-100MBO) to a thermoplastic (PMMA). The effect of the process parameters on the volume of the melted solder, the deformation of the element, and the structure of the soldered joint was investigated on the joints made. The final criterion for assessing the influence of the process parameters was the joint strength. Due to the low strength of PPMA, the maximum joint strength was determined on RES joints of galvanized steel sheet and aluminum. The results showed that, to ensure the joint strength at the level of the strength of the Sn60Pb40 solder used, a heat input of 952 J and a clamping force of 623 N are required. The mentioned parameters ensure the necessary conditions for the creation of a soldered joint with a galvanized steel sheet as well as the deformation of the bimetallic element to create a form-fit effect in the opening of the PMMA to create a mechanical connection.

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Section: Methodsmentioning

confidence: 99%

Use of Sn60Pb40 Solder in Resistance Element Soldering Technology

Sejč

Vanko

Schrek

et al. 2023

Metals

Self Cite

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“…They can be divided into hydrocarbon and ester oils, including esters of organic, phosphoric and carbonic acids, polyalkyl glycol oils and their esters [10]. In sheet metal forming, many types of lubricants are used, adapted to the prevailing values, process temperature and the specificity of the machining process [11,12]. Determining the influence of the friction process parameters on the value of the coefficient of friction is difficult due to the complexity of the relationship between the individual parameters [13,14].…”

Section: Introductionmentioning

confidence: 99%

EXPERIMENTAL DETERMINATION OF THE DRAW BEAD COEFFICIENT OF FRICTION OF CuZn SHEETS IN SHEET METAL FORMING PROCESSES

Trzepieciński,

Luiz,

Szpunar

2023

Acta Metall Slovaca

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In sheet metal forming, draw beads are used to limit the flow of sheet metal in specific areas of the stamping die. The value of the coefficient of friction at the draw bead determines achievement of the desired resistance to sheet displacement. This article presents the results of experimental tests for determining the coefficient of friction on a draw bead using a specially developed tribotester. The test material consisted of CuZn37, CuZn30 and CuZn10 brass sheets in various states of hardening. Investigations were carried out with different roughness of the countersamples and sliding speeds. In addition, the tests were carried out under conditions of dry friction and lubrication of the sheet surface with LAN-46 machine oil. The relationships between the process parameters and the value of the coefficient of friction were analysed using the analysis of variance. It was found that the coefficient of friction decreases with increasing mean roughness of the countersamples. Lubrication reduced friction by about 6.2-29.8% depending on the grade of the tested sheet and the sliding speed.

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Forming Process Simulation of Bimetallic Billet by Extrusion for Rew Method

Cited by 2 publications

References 11 publications

Use of Sn60Pb40 Solder in Resistance Element Soldering Technology

Use of Sn60Pb40 Solder in Resistance Element Soldering Technology

EXPERIMENTAL DETERMINATION OF THE DRAW BEAD COEFFICIENT OF FRICTION OF CuZn SHEETS IN SHEET METAL FORMING PROCESSES

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