scholarly journals INVESTIGATION OF DEEP DRAWABILITY OF RECTANGULAR SHAPED CUPS IN DEEP DRAWING DIES

2021 ◽  
Author(s):  
Cebeli OZEK ◽  
Hayrettin AKKELEK
Keyword(s):  
Deep Drawing ◽  
Deep Drawability ◽  
Drawing Dies

A CAD/CAM system for deep drawing dies in a simple-action press

1999 ◽  
Vol 87 (1-3) ◽  
pp. 258-265 ◽  
Author(s):  
S.B Park ◽  
Y Choi ◽  
B.M Kim ◽  
J.C Choi
Keyword(s):  
Deep Drawing ◽  
Cad Cam ◽  
Simple Action ◽  
Drawing Dies

Formability of Magnesium-Lithium Alloy Sheet by Multi-Stage Deep Drawing

2012 ◽  
Vol 706-709 ◽  
pp. 1164-1169 ◽  
Author(s):  
Yasunori Harada ◽  
Atsushi Yamamoto ◽  
Takayuki Goto ◽  
Eiji Nakamura
Keyword(s):  
Magnesium Alloy ◽  
Deep Drawing ◽  
Alloy Sheet ◽  
Ambient Temperatures ◽  
Deep Drawability ◽  
Lithium Alloy ◽  
Flat Sheet ◽  
Sheet Blank ◽  
Multi Stage ◽  
Blank Diameter

The formability of the magnesium-lithium alloy was examined by multi-stage deep drawing. Long cups of magnesium alloy were formed at ambient temperatures by multi-stage deep drawing processes. In multi-stage deep drawing, the magnesium-lithium alloy sheets were employed and a flat sheet blank is formed into a cylindrical by a punch. Various cups were drawn by exchanging the punch and ringed die. The die was flat in the first stage, and was taper without a blankholder in the subsequent stages. The effects of the ratio of blank diameter to punch diameter and blank thickness on the deep drawability were examined. It was confirmed that the Mg-Li alloy long-cups were successfully formed by a multi-stage deep drawing operation in cold.

TRUWEAR

Alloy Digest ◽  
1969 ◽  
Vol 18 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
High Resistance ◽  
Deep Drawing ◽  
Cold Work ◽  
Heat Treating ◽  
High Carbon ◽  
Steel Company ◽  
High Chromium ◽  
Drawing Dies ◽  
Cold Work Tool Steel

Abstract Truwear is a high-carbon high-chromium cold work tool steel having extremely high resistance to abrasion and wear. It is recommended for deep drawing dies, brick mold liners, valve seats, master gages, etc. This datasheet provides information on composition and hardness as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-215. Producer or source: Jessop Steel Company.

Topographic Characterization of Progressive Wear on Deep Drawing Dies

1997 ◽  
Vol 40 (2) ◽  
pp. 346-352 ◽  
Author(s):  
S. Christiansen ◽  
L. De Chiffre
Keyword(s):  
Deep Drawing ◽  
Drawing Dies

Effect of Geometries of Die/Blank Holder and Punch Radii in Angular Deep-Drawing Dies on DP Steel Formability

2015 ◽  
Vol 813-814 ◽  
pp. 269-273 ◽  
Author(s):  
P. Venkateshwar Reddy ◽  
S. Hari Prasad ◽  
Perumalla Janaki Ramulu ◽  
Sirish Battacharya ◽  
Daya Sindhu Guptha
Keyword(s):  
Deep Drawing ◽  
Thickness Distribution ◽  
Frictional Coefficient ◽  
Drawing Ratio ◽  
Drawing Process ◽  
Dp Steel ◽  
Punch Force ◽  
Blank Holder ◽  
Deep Drawing Process ◽  
Drawing Dies

In recent days deep-drawing is one of the most important methods used for sheet metal forming. The geometries of die/blank holder and punch are one of the parameters for deep-drawing. This paper presents an attempt to determine the effect of different geometries of die/blank holder, punch radii and blank holding force on deep drawing process for the formability of DP Steel of 1mm sheet. The numerical simulations are performed for deep drawing of cylindrical cups at a constant frictional coefficient of 0.12 and different blank holding forces of 10, 15 and 20kN are used. For numerical simulation PAM STAMP 2G a commercial FEM code in which Hollomon’s power law and Hills 1948 yield’s criterion is used. The die/blank holder profile used with an angles of α=0°, 12.5°, 15° and die/punch profile with a radii of R= 6 and 8mm were simulated to determine the influence of punch force and thickness distribution on the limit drawing ratio. The aim of this study is to investigate the effect of tool geometries on drawability of the deep-drawing process.

A CAPP/CAD for Sheet Metal Deep Drawing

2014 ◽  
Vol 619 ◽  
pp. 105-109
Author(s):  
R.K. Abdel-Magied ◽  
H.M.A. Hussein
Keyword(s):  
Sheet Metal ◽  
Deep Drawing ◽  
Computer Aided Design ◽  
Basic Program ◽  
Integrated System ◽  
Computer Aided Process Planning ◽  
Drawing Die ◽  
Computer Aided ◽  
Aided Design ◽  
Drawing Dies

The aim of this work is to develop an integrated system for facilitating the process of designing the drawing dies and their component. The developed system is based on the integration between Computer Aided Process Planning in Sheet Metal Drawn parts “CAPP”, and the Computer Aided Design in Deep Drawing Die components “CAD”. Both modules are coded using Visual Basic program and joined with AutoCAD. The CAPP module made to report the drawing load and to plot the shape of the drawn shell in each stage of the Axis-Symmetric Deep Drawing process. Based on the reported shell geometry, the dimensions of the die components are calculated and transferred to the CAD module. The CAD module, which is based on many data bases (standard parts, sheet metal data), plots the required deep drawing die components for each drawn stage on the AutoCAD monitor. A demonstrated example is presented to validate the developed system and to show that the system results are acceptable.

Frictional Behaviour of Lubricants during Deep Drawing and Ironing Processes for Zinc-Coated Steel Sheets

1996 ◽  
Vol 210 (3) ◽  
pp. 189-197 ◽  
Author(s):  
M Muraki ◽  
K Tagawa ◽  
H Ide ◽  
T Nakamura
Keyword(s):  
Deep Drawing ◽  
High Hardness ◽  
Alloy Layer ◽  
Coated Steel ◽  
Contact Ratio ◽  
Friction Modifiers ◽  
Deep Drawability ◽  
Steel Sheets ◽  
Zinc Coated Steel ◽  
Frictional Behaviour

Frictional behaviour of lubricants during the deep drawing and the ironing processes was studied for two types of zinc-coated steel sheets at low speeds. Deep drawability of galvannealed steel sheet (GA) was significantly improved by an increase in viscosity as well as by addition of the friction modifiers, which was due to reduction in frictional forces in the flange zone and around the die radius. In contrast to the results in the drawing test, the frictional characteristics in the ironing test were little affected by the viscosity because the ironing process was primarily performed in the boundary lubrication regime. As to workpiece materials, a double-layer steel (GAE) coated with an electrogalvanized iron-rich alloy layer on the surface of GA was superior to GA in terms of deep drawability due to the lower contact ratio based on high hardness of the top coating layer and probably due to a low coefficient of friction in the boundary contact area. When compared with the effects of the friction modifiers, active sulphur EP (extreme pressure) additive showed the most significant effect on formability and the lowest friction in the ironing process. On the other hand calcium sulphonate raised formability in the deep drawing, but was ineffective for reducing friction in the ironing process.

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