The analysis of properties and forming of laser welded superduplex steel SAF 2507

Bílik, Jozef; Ertel, Jozef; Bárta, Jozef; Marônek, Milan; Šugárová, Jana

doi:10.15199/24.2015.9.10

Cited by 5 publications

(2 citation statements)

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“…Tailor welded blanks (TWBs) offer an excellent means to meet these competing and seemingly contradictory demands. They are used for forming of parts with special strength, stiffness and operational deformation properties (Kinsey and Wu, 2011;Evin and Tomáš, 2012;Bílik et al, 2015;Fracz et al, 2014;Reisgen et al, 2012). With the use of materials with different stress-strain properties or different thicknesses we can achieve higher strength and stiffness while lower weight of the drawn parts or even the whole construction (Slota et al, 2014;Evin, 2013;Fracz et al, 2013;Bílik et al, 2010;Evin et al, 2015;Merklein et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Deformation Properties of Tailor Welded Blank Made of Dual Phase Steels

Schrek

Švec

Gajdošová

2016

Acta Mechanica Et Automatica

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The paper is dedicated to forming and properties of passenger car´s B-pillar reinforcement drawn from simple blank and alternatively tailor-welded blank (TWB). Drawn part is characterised by a place with a large strain, while forming process simulation did not confirm the creation of crack using the TWB consisting of dual phase HCT980X instead of previous HCT600 steel. It is because HCT980X steel has higher strength and lower ductile properties. The analysis of properties of drawn parts is focused on the simulated crash test in Dynaform software. Obtained sizes of drawn forces in simulated frame of the drawn parts and their comparison proved the possibility of the replacement the 1.2 mm thick simple blank from HCT600 steel with the 1 mm thick TWB consisting of HCT600 and HCT980X steel. The changed thickness of the simple blank caused 20% weight saving while containing the same properties of the drawn part.

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Section: Introductionmentioning

confidence: 99%

Deformation Properties of Tailor Welded Blank Made of Dual Phase Steels

Schrek

Švec

Gajdošová

2016

Acta Mechanica Et Automatica

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“…Material differences of used materials affect significantly the drawing parameters and complicate achieving of required properties of the drawn part. One of the ways of elimination this negative effect is to choose a suitable blankholder system with optimal distribution of blankholder forces by using an elastic blankholder with an adjustable distribution of blankholder forces [8][9][10][11]. Within the framework of this study, the experimental blankholder system with an elastic blankholder and an adjustable distribution of blankholder forces was used.…”

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confidence: 99%

Deep-Drawing Process Simulation for Tailor-Welded Blanks with an Elastic Blankholder

et al. 2017

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Application of tailor welded blanks is proved to be very effective in the current trend of body parts construction. However, their formability is limited to the differences of mechanical properties of individual tailor welded blanks parts. These differences result in non-constant material flow and a deflection of the weld line. This article is focused on the elimination of uneven material flow and weld line instability. The results have been obtained by means of laboratory measurements on the drawing tool as well as material simulation computed by LS-DYNA code. According to acquired results, it can be claimed that the blankholder force values and force distribution have a significant influence on the deep-drawing process of tailor welded blanks. The weld line direction in consideration of the blankholder area size has influence on the deflection value. The simulation provided a reliable prediction of tailor-welded blank formability.

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