Blank-holding effect on the hole-flanging process of sheet aluminum alloy

Krichen, Abdelkader; Kacem, Ahmed; Hbaieb, Moncef

doi:10.1016/j.jmatprotec.2010.11.018

Cited by 38 publications

(10 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The forming kinematics in the hole-flanging for high value of R c was previously described in the work of Krichen et al (2011). It was found that forming is achieved in only five stages.…”

Section: Forming Kinematicsmentioning

confidence: 88%

See 1 more Smart Citation

Occurrence and effect of ironing in the hole-flanging process

Kacem

Krichen

Manach

2011

Journal of Materials Processing Technology

Self Cite

View full text Add to dashboard Cite

“…The forming kinematics in the hole-flanging for high value of R c was previously described in the work of Krichen et al (2011). It was found that forming is achieved in only five stages.…”

Section: Forming Kinematicsmentioning

confidence: 88%

“…The screws were slightly tightened in such a way to prevent the upward motion of the blank-holder and the workpiece as shown in the work of Krichen et al (2011). Hole-flanging process was carried out with a universal tension-compression testing machine of maximum load 50 kN.…”

Section: Methodsmentioning

confidence: 99%

Occurrence and effect of ironing in the hole-flanging process

Kacem

Krichen

Manach

2011

Journal of Materials Processing Technology

Self Cite

View full text Add to dashboard Cite

“…During hole-flanging, the workpiece was clamped between the die and blank-holder by applying a force of 5 kN (Krichen et al, 2011). The diameter of the punch was 12 mm and the half-angle at the top of the cone was 30 .…”

Section: Methodsmentioning

confidence: 99%

Prediction of damage in the hole-flanging process using a physically based approach

Kacem

Krichen

Manach

2014

International Journal of Damage Mechanics

Self Cite

View full text Add to dashboard Cite

The aim of this work is to identify the limits of the hole-flanging process experimentally and numerically by a physically based approach of damage for two different aluminium alloy sheets. Two hole-flanging conditions were considered, namely hole-flanging without ironing in which the flange is formed by edge stretching, and hole-flanging with ironing in which the metal is squeezed between the punch and the die. The forming defects were characterized experimentally by scanning electron microscope observations performed in critical zones of the flanged parts. The forming defects were also predicted numerically by a 3D finite element model based on Gurson-Tvergaard-Needleman constitutive equations. To evaluate the accuracy of the developed finite element model, material damage distribution within the workpiece during the process was studied and compared with experimental observations. Furthermore, the effects of the clearance-thickness ratio on the damage behaviour were investigated for different diameter of the initial hole. This study provides relevant and new results in the design of many parts obtained by holeflanging. Results showed that the model predicts accurately all types of failures (orange peel aspect, necking, microvoids, tear) for different conditions and both materials. Moreover, despite the large deformation induced by ironing, such conditions decrease the damage, due to void closure effects, that is in agreement with experimental results.

show abstract

“…Fracz et al [8] studied the thickness distribution when different punch shapes were used. Krichen [9] determined of wear at the thread tapping process described in [30]. Additionally, indirect methods for seeking common features among the group of cutting tools with the best performances on machining have been presented in [31].…”

Section: Introductionmentioning

confidence: 99%

Surface Analysis of Uncoated and PVD Coated Punch at the Hole-Flanging Process

Tomáš

Džupon

Evin

et al. 2018

Metals

View full text Add to dashboard Cite

This paper researches the surface condition and wear on the hole-flanging punch when producing a flanged Ø7 mm hole in a steel strip S355J2 + N (1.0577) with a thickness of 3 mm. The hole was flanged by a punch with a defined geometry known as a tangent ogive and described via a caliber radius head (CRH) ratio. During the process, wear of the punch made of hardened tool steel 1.3343 appeared after 20,000 strokes. Thus, a multipurpose coating TiCN-MP deposited via Lateral Rotating Arc-Cathode technology was applied on the punch to extend the punch lifetime. The coated punch was polished to remove droplets after deposition process. By applying TiCN-MP coating, 120,000 strokes were applied to reach the same wear as for the uncoated tool steel. The surface of the punch made of the hardened tool steel for uncoated and PVD coated conditions was researched by scanning electron microscopy after wear, and an energy dispersive X-ray (EDX) analysis was done to identify components of bonded material. In addition, the normal pressure on the punch active surface was studied via a numerical simulation of the hole-flanging process. The position of the high normal pressure is well correlated to the position of the adhesive wear for the uncoated and coated punches.

show abstract

Blank-holding effect on the hole-flanging process of sheet aluminum alloy

Cited by 38 publications

References 15 publications

Occurrence and effect of ironing in the hole-flanging process

Occurrence and effect of ironing in the hole-flanging process

Prediction of damage in the hole-flanging process using a physically based approach

Surface Analysis of Uncoated and PVD Coated Punch at the Hole-Flanging Process

Contact Info

Product

Resources

About