Results 41 to 50 of about 109 (94)
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Analysis of the hydromechanical deep drawing of cylindrical cups
Journal of Materials Processing Technology, 2000The hydromechanical deep drawing process of aluminum cups and mild steel cups is analyzed experimentally and numerically. The effects of the process parameters on the final product quality are discussed. A working zone with a suitable maximum chamber pressure is obtained from the experimental results.
S H Zhang, J Danckert, K B Nielsen
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Forming Limits in Hydromechanical Deep Drawing
CIRP Annals - Manufacturing Technology, 1994Summary A systematic approach predicting the possibility of forming complex shapes in hydromechanical deep drawing has been developed The method is based on knowledge about the limiting curve of drawing-in of the flange caused by fracture, adopting different initial drawing ratios, when drawing circular cylindrical cups. This limiting curve is called
N Bay
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Hydromechanical deep drawing of superalloy cups
Journal of Materials Processing Technology, 2005Abstract As an advanced technology of sheet metal forming, hydromechanical deep drawing (HDD) is being used increasingly in the sheet metal forming of common materials like aluminum, copper and steel. For superalloys widely applied in aviation and spaceflight, study is deficient at present. In this paper, the forming conditions of cylindrical cups of
Kang Dachang, Chen Yu, Xu Yongchao
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Deep drawing using a novel hydromechanical tooling
International Journal of Machine Tools and Manufacture, 2009Abstract A new type of passive-pressurized hydromechanical deep-drawing (PHDD) tooling with two pistons is designed and manufactured: one piston installed inside is used to enhance the die pressure, the other is used to promote the radial-pushing pressure, which provides the radial-pushing and blank-holder forces. The advantage of the PHDD tooling is
J. Lin, S.D. Zhao, Z.Y. Zhang, Z.W. Wang
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Hydromechanical deep drawing of cups with stepped geometries
Journal of Materials Processing Technology, 2008Abstract This paper deals with the hydromechanical deep drawing of metal cups with complex stepped geometries. Two materials, a low-carbon steel (DC04) and stainless steel (DIN 1.4301), have been researched. A die set with a maximum possible deep drawing ratio β 0,max = 3.0 for a punch diameter ∅ 100 mm has been designed and constructed. The die
T. Khandeparkar, M. Liewald
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Hydromechanical Deep-Drawing of Aluminium-Alloys at Elevated Temperatures
CIRP Annals - Manufacturing Technology, 2002Abstract This paper presents a technology that combines the different effects used in hydromechanical and warm deep drawing to reduce the drawing force and to increase the transmittable drawing force in the deep drawing process of aluminium sheets by flange heating and by using a counter pressure.
Peter Groche
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Parameter study of the axisymmetric hydromechanical deep drawing process
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2006In this paper, hydromechanical deep drawing and the effect of process parameters on the process have been studied using the finite element (FE) method. In order to verify the results of FE simulations, a study has also been carried out using experimental tooling.
A Fazli, B Mollaei Dariani
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Hydromechanical deep-drawing of aluminum parabolic workpieces—experiments and numerical simulation
International Journal of Machine Tools and Manufacture, 2000Aluminum parabolic workpieces were formed with hydromechanical deep-drawing technology. The deep-drawing process was analyzed by using the explicit finite element method with various process parameters. Defects of wrinkling and rupture are predicted for some forming conditions, and the thickness distribution results are in good agreement with the ...
S H Zhang, J Danckert, K B Nielsen
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Numerical model for the oil pressure distribution in the hydromechanical deep drawing process
Journal of Materials Processing Technology, 2000Abstract This paper presents an attempt to simulate the hydromechanical deep drawing process using the finite element method (FEM). The basic idea is to compute the counter pressure and the fluid film pressure by solving a finite difference approximation of Reynold’s equation. The concept is implemented as a contact algorithm in Exhale2D, an explicit
Jensen, Morten Rikard +2 more
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Study on hydromechanical deep drawing with uniform pressure onto the blank
International Journal of Machine Tools and Manufacture, 2004Udgivelsesdato ...
Lihui Lang +2 more
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