Manufacturing of Lightweight Components by Metal Forming

Kleiner, Matthias; Geiger, Manfred; Klaus, Alexander

doi:10.1016/s0007-8506(07)60202-9

Cited by 540 publications

(222 citation statements)

References 27 publications

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“…External design parts require a perfect outer shape without wrinkles or scratches since they cannot always be concealed by paint (Kleiner, Geiger, & Klaus, 2003;Jaina, Allina, & Bullb, 1998;Ghouati & Chen, 2006). The forming process must therefore avoid scratches that may occur due to friction between blank and tooling.…”

Section: Figure 1 Tooling Design Process With (B) and Without Simulamentioning

confidence: 99%

Manufacturing Process Simulation – On Its Way to Industrial Application

Otten¹,

Weber²,

Arent³

2018

IJAAA

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Section: Figure 1 Tooling Design Process With (B) and Without Simulamentioning

confidence: 99%

Manufacturing Process Simulation – On Its Way to Industrial Application

Otten¹,

Weber²,

Arent³

2018

IJAAA

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“…3(b) and (c), an electrical current passes to the test-piece only through the conducting network that becomes hot because of its high resistivity. The essence of the proposed concept is the design of network resistance, which depends on both resistivity of the material and geometry as defined in equation (2).…”

Section: Refinements To Reduce the Heat Lossmentioning

confidence: 99%

“…Manufacture of lightweight components made of UHSS in traditional cold stamping is limited by poor formability and excessive spring-back of the workpiece material. To overcome these drawbacks, hot stamping technology has been developed in the recent decade and is now widely used [2,3].…”

Section: Introductionmentioning

confidence: 99%

A Novel Grip Design for High-Accuracy Thermo-Mechanical Tensile Testing of Boron Steel under Hot Stamping Conditions

Ganapathy

Lin

et al. 2017

Exp Mech

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Achieving uniform temperature within the effective gauge length in thermo-mechanical testing is crucial for obtaining accurate material data under hot stamping conditions. A new grip design for the Gleeble Materials-Simulator has been developed to reduce the long-standing problem of temperature gradient along a test-piece during thermomechanical tensile testing. The grip design process comprised two parts. For the first part, the new design concept was analysed with the help of Abaqus coupled Thermal-Electric Finite element simulation through the user defined feedback control subroutine. The second part was Gleeble thermomechanical experiments using a dog-bone test-piece with both new and conventional grips. The temperature and strain distributions of the new design were compared with those obtained using the conventional system within the effective gauge length of 40 mm. Temperature difference from centre to edge of effective gauge length (temperature gradient) was reduced by 56% during soaking and reduced by 100% at 700°C. Consequently, the strain gradient also reduced by 95%, and thus facilitated homogeneous deformation. Finally to correlate the design parameters of the electrical conductor used in the new grip design with the geometry and material of test-piece, an analytical relationship has been derived between the testpiece and electrical conductor.

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“…Thus, different types of tailored blanks manufactured by welding and plastic deformation have been investigated, in order to realize sheets with varying local mechanical properties, different quality of materials and sheet metal thicknesses. Compared to conventional semi-finished products, tailored blanks provide a weight reduction potential of 20-34 % [1]. A common way of joining different blanks is welding [4].…”

Section: Tailored Blanksmentioning

confidence: 99%

Investigation Of Tailored Blank Production By The Process Class Sheet-Bulk Metal Forming

Merklein¹,

Opel²

2011

AIP Conference Proceedings

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Low field permittivity of ferroelectric-ferrite ceramic composites: Experiment and modeling J. Appl. Phys. 112, 094103 (2012) Synthesis and efficient near-infrared quantum cutting of Pr3+/Yb3+ co-doped LiYF4 single crystals J. Appl. Phys. 112, 073518 (2012) Feasibility study in application of forging waste heat on absorption cooling system J. Renewable Sustainable Energy 4, 053109 (2012) Growth of (111) oriented NiFe2O4 polycrystalline thin films on Pt (111) via sol-gel processing J. Appl. Phys. 112, 063908 (2012) Large size metallic glass gratings by embossing J. Appl. Phys. 112, 064505 (2012) Additional information on AIP Conf. Proc. . In most cases the joining has a significant influence on the consecutively forming process due to varying local mechanical properties [3]. Hence the manufacturing of tailored blanks with a defined sheet thickness characteristic by the process class "sheet-bulk metal forming" is investigated. Subsequent the tailored blanks are provided for forming operations such as deep-drawing and the direct forming of complex functional shape elements. Aim of the project is the manufacturing of circular blanks with a sheet thickening in the exterior area by an upsetting operation. At the beginning, FE-based studies and physical experiments using blanks of DC04 are carried out, to create a fundamental knowledge base of the forming process. A comparatively large contact area between blank and forming tool, a threedimensional material flow and the low sheet thickness cause high process forces. Building up a multi-stage upsetting process with different sequenced tool geometries is one approach to meet this challenge. The material flow out of the sheet center is realized step-by-step to lower the actual contact area and sequential the appearing forces.

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Manufacturing of Lightweight Components by Metal Forming

Cited by 540 publications

References 27 publications

Manufacturing Process Simulation – On Its Way to Industrial Application

Manufacturing Process Simulation – On Its Way to Industrial Application

A Novel Grip Design for High-Accuracy Thermo-Mechanical Tensile Testing of Boron Steel under Hot Stamping Conditions

Investigation Of Tailored Blank Production By The Process Class Sheet-Bulk Metal Forming

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