Numerical and experimental investigations of hydro-mechanical deep drawing process of laminated aluminum/steel sheets

2015 ◽  
Vol 18 ◽  
pp. 131-140 ◽  
Author(s):  
S. Bagherzadeh ◽  
M.J. Mirnia ◽  
B. Mollaei Dariani
Keyword(s):  
Deep Drawing ◽  
Experimental Investigations ◽  
Drawing Process ◽  
Deep Drawing Process ◽  
Steel Sheets

Effect of the Blank-Holding Load on the Drawing Force in the Deep-Drawing Process of Cylindrical and Square Cups

2015 ◽  
Vol 760 ◽  
pp. 379-384 ◽  
Author(s):  
Lucian Lazarescu ◽  
Ioan Nicodim ◽  
Dan Sorin Comsa ◽  
Dorel Banabic
Keyword(s):  
Aluminum Alloy ◽  
Deep Drawing ◽  
The Other ◽  
Drawing Process ◽  
Drawing Force ◽  
Forming Process ◽  
Deep Drawing Process ◽  
Steel Sheets ◽  
Other Hand ◽  
Blank Holding Force

In this study, the influence of the blank-holding force (BHF) on the drawing force (DF) in the deep-drawing process of cylindrical and square cups has been investigated experimentally. For this purpose, different constant and variable BHFs have been applied to AA6016-T4 aluminum alloy and DC04 steel sheets during the forming process. It has been observed that an increased constant BHF leads to an increase of DF. On the other hand, the variable BHF approach, in which the BHF decreases in six steps throughout the punch stroke, reduces the DF.

scholarly journals Effect on Blank Holding Force on Blank Deformation at Direct and Indirect Hot Deep Drawings of Boron Steel Sheets

Metals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 574 ◽  
Author(s):  
Hyung Yoon Seo ◽  
Chul Kyu Jin ◽  
Chung Gil Kang
Keyword(s):  
Deep Drawing ◽  
Boron Steel ◽  
Drawing Process ◽  
Hot Press ◽  
Deep Drawing Process ◽  
Steel Sheets ◽  
Punch Load ◽  
Blank Holding Force ◽  
Hot Press Process ◽  
Thinning Rate

This study involves performing direct and indirect hot press forming on ultra-high-strength steel (UHSS) boron steel sheets to determine formability. The indirect hot press process is performed as a cold deep drawing process, while the direct hot press process is performed as a hot deep drawing process. The initial blank temperature and the blank holding force are set as parameters to evaluate the performance of the direct and indirect deep drawing processes. The values of punch load and forming depth curve were obtained in the experiment. In addition, the hardness and microstructure of the boron steel sheets are examined to evaluate the mechanical properties of the material. The forming depth, maximum punch load, thickness, and thinning rate according to blank holding force were examined. The result shows that a larger blank holding force has a more significant effect on the variation of the thickness and thinning rate of the samples during the drawing process. Furthermore, the thinning rate of the deep drawing part in with and without fracture boundary was respectively examined.

Texture evolution of monolithic-phase and dual-phase steel sheets during a deep-drawing process

2011 ◽  
Vol 17 (3) ◽  
pp. 403-412 ◽  
Author(s):  
Hoe-Seok Yang ◽  
Baek-Seok Seong ◽  
Seong-Ho Han ◽  
Shi-Hoon Choi
Keyword(s):  
Deep Drawing ◽  
Dual Phase Steel ◽  
Texture Evolution ◽  
Dual Phase ◽  
Drawing Process ◽  
Deep Drawing Process ◽  
Steel Sheets

scholarly journals Reduction of Springback for Hat Channel with High-Strength Steel Sheets by Stroke-Returning Deep-Drawing Process

2016 ◽  
Vol 57 (660) ◽  
pp. 60-65 ◽  
Author(s):  
Hayato KOMINE ◽  
Masayuki ASAKURA ◽  
Taro GEKA ◽  
Takuma KISO ◽  
Masato TAKAMURA ◽  
...  
Keyword(s):  
Deep Drawing ◽  
High Strength Steel ◽  
High Strength ◽  
Drawing Process ◽  
Deep Drawing Process ◽  
Steel Sheets

scholarly journals Effect of Tool Geometry Parameters on the Formability of a Camera Cover in the Deep Drawing Process

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3993
Author(s):  
Thanh Trung Do ◽  
Pham Son Minh ◽  
Nhan Le
Keyword(s):  
Deep Drawing ◽  
Thickness Distribution ◽  
Metal Flow ◽  
Sheet Thickness ◽  
Side Wall ◽  
Tool Geometry ◽  
Drawing Process ◽  
Nose Radius ◽  
Deep Drawing Process

The formability of the drawn part in the deep drawing process depends not only on the material properties, but also on the equipment used, metal flow control and tool parameters. The most common defects can be the thickening, stretching and splitting. However, the optimization of tools including the die and punch parameters leads to a reduction of the defects and improves the quality of the products. In this paper, the formability of the camera cover by aluminum alloy A1050 in the deep drawing process was examined relating to the tool geometry parameters based on numerical and experimental analyses. The results showed that the thickness was the smallest and the stress was the highest at one of the bottom corners where the biaxial stretching was the predominant mode of deformation. The problems of the thickening at the flange area, the stretching at the side wall and the splitting at the bottom corners could be prevented when the tool parameters were optimized that related to the thickness and stress. It was clear that the optimal thickness distribution of the camera cover was obtained by the design of tools with the best values—with the die edge radius 10 times, the pocket radius on the bottom of the die 5 times, and the punch nose radius 2.5 times the sheet thickness. Additionally, the quality of the camera cover was improved with a maximum thinning of 25% experimentally, and it was within the suggested maximum allowable thickness reduction of 45% for various industrial applications after optimizing the tool geometry parameters in the deep drawing process.

Blank shape optimization in the deep drawing process by sun method

2021 ◽  
Author(s):  
Hamidreza Gharehchahi ◽  
Mohammad Javad Kazemzadeh-Parsi ◽  
Ahmad Afsari ◽  
Mehrdad Mohammadi
Keyword(s):  
Shape Optimization ◽  
Deep Drawing ◽  
Drawing Process ◽  
Deep Drawing Process ◽  
Blank Shape Optimization ◽  
Blank Shape

Production of Tapered Cups by Sequential Deep Drawing of Sheet Metals Using Drawn Cups as a Part of Punch

1993 ◽  
Vol 115 (2) ◽  
pp. 224-229 ◽  
Author(s):  
K. Yamaguchi ◽  
K. Kanayama ◽  
M. H. Parsa ◽  
N. Takakura
Keyword(s):  
Deep Drawing ◽  
Drawing Ratio ◽  
Drawing Process ◽  
Sheet Metals ◽  
Deep Drawing Process ◽  
Drawing Method

A new deep drawing process of sheet metals is developed to facilitate small-lot production of deep cups with large drawing ratio. In this process, unlike the conventional deep drawing method, a few drawn cups are always stacked on the punch and used as a part of punch for the subsequent deep drawing of a given blank. Before drawing a new blank, a drawn cup which is in contact with the punch is stripped off. The repetition of such stripping and drawing operations makes it possible to carry out both the first-stage drawing and the subsequent slight redrawings in one drawing operation using only one pair of punch and die. In this paper, this new deep drawing process is applied to the production of tapered cups and the main feature of the process is shown.

Sign in / Sign up

Export Citation Format

Share Document