Experimental Study and Analysis of the Influence of Drawbead against Restriction and Deep Drawing Force of Rectangular Cup-Cans with Tin Plate Material

Candra, Susila; Batan, Ide

doi:10.4028/www.scientific.net/amm.315.246

Cited by 4 publications

(5 citation statements)

References 3 publications

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“…Equation 4, can obtain equation as r,i = ln (8) Furthermore, if the friction on the flange surface is considered, the forming equation of radial stress will be r,i = +…”

Section: The Mathematical Equation Of the Maximum Vbhfmentioning

confidence: 99%

“…Although specifically about the fracture (cracking) criteria could use the different criterion. S. Candra et al [8,9] determined a variable BHF base on criteria of wrinkle height dimension and maximum strength of material for predicting the wrinkle and cracking, respectively. In practice, the criteria of maximum strength of the material which is utilized as an index of the cracking, can be easily applied to estimate the maximum drawing force, to control the blank holder equipment optimally.…”

Section: Introductionmentioning

confidence: 99%

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Analytical Study and FEM Simulation of the Maximum Varying Blank Holder Force to Prevent Cracking on Cylindrical Cup Deep Drawing

et al. 2015

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This Research is aimed to predict the maximum varying blank holder force (VBHF) over the punch stroke in order to eliminate cracks on cup deep drawing product. The constant blank holder force during the process, it's frequently not capable to prevent cracking, effectively. Using the slab method with assuming a constant volume of material, the simple analytical approach of maximum VBHF, has been conducted under the failure deformation and cracking criteria on every stage punch stroke. The cracking criteria are based on the maximum strength of materials. Steel sheet of SPCD grade, thickness 0.2 mm was used in this study. And the diameter of the cylindrical cup-shaped product was 40 mm. The analytic calculation of the maximum VBHF has been compared to FEM simulations, and its effects in the prevention of cracking. Analytical Results of maximum VBHF, not much different with FEM simulation. Compared to the application of the constant blank holder force, VBHF can be quite effective for preventing the occurrence of cracking and increasing the formability of deep drawing.

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“…Equation 4, can obtain equation as r,i = ln (8) Furthermore, if the friction on the flange surface is considered, the forming equation of radial stress will be r,i = +…”

Section: The Mathematical Equation Of the Maximum Vbhfmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analytical Study and FEM Simulation of the Maximum Varying Blank Holder Force to Prevent Cracking on Cylindrical Cup Deep Drawing

et al. 2015

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“…The proper combination of blank holding forces and draw beads plays a critical role in achieving high-quality deep-drawn products [15]- [16], as it allows the blank holder to control material flow, minimize defects, and produce parts with the desired geometry and dimensional accuracy. Additionally, the implementation of an antilock brake mechanic system for blank holder control is an innovative approach that leverages real-time data and feedback to optimize the deep-drawing process [17]- [18].…”

Section: Introductionmentioning

confidence: 99%

Development of Porous Material and Hybrid Porous Ti6Al4V Dental Implants using Metal Injection Molding (MIM)

Supriadi

2024

JMechE

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Dental implants are biomaterial devices implanted in the jawbone through surgery to replace missing teeth. The surface topography of dental implants with surface roughness and a porous layer made of Ti6Al4V material is recommended to improve osseointegration and induce the growth of new bone tissue (bone ingrowth) while reducing the effect of stress shielding due to the high Young's modulus of the implant material. This study presents the fabrication of porous layers, the development of dental implant design, and the manufacturing process of hybrid porous dental implants using Metal Injection Molding (MIM). Surface analysis was performed on the combination of the implant core material with the porous Ti6AL4V material after the sintering process using a temperature of 1150 °C with holding times of 60, 90, and 120 minutes under an argon atmosphere with a flow rate of 1 liter/minute. The research results showed that the sintering holding time affected the percentage of porosity and hardness of the Ti6Al4V material. Surface roughness greatly influenced the shear bond strength on the surface. The higher the surface roughness value, the higher the shear bond strength. In this study, the highest shear stress value obtained was 1.54 MPa at a surface roughness (Ra) of 2.37 μm. The green part of the hybrid porous dental implant was successfully made using MIM with a mold temperature of 180 °C.

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“…The magnitude of the blank holder force is an important factor in the forming process and hence the proper magnitude has to be determined properly. In this study, a variable blank holder force (VBHF) approach to deep drawing is employed [2][5] [6]. This study provides information about the optimal gap to prevent wrinkling of the material, which will be used as data in this simulation.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Metal Flow to Investigate the Application of Antilock Brake Mechanic System in Deep Drawing Process of Cup

Candra

Batan

Pramono

et al. 2013

AMR

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This paper presents the importance of simulation of metal flow in deep drawing process which employs an antilock brake mechanic system. Controlling the force and friction of the blank holder is imperative to assure that the sheet metal is not locked on the blank holder, and hence it flows smoothly into the die. The simulation was developed based on the material displacement, deformation and deep drawing force on flange in the radial direction, that it is controlled by blank holder with antilock brake mechanic system. The force to blank holder was applied periodically and the magnitude of force was kept constant during simulation process. In this study, the mechanical properties of the material were choses such that they equivalent to those of low carbon steel with its thickness of 0.2 mm. The diameter and the depth of the cylindrical cup-shaped product were 40 mm and 10 mm, respectively. The simulation results showed that the application of antilock brake mechanic system improves the ability to control the material flow during the drawing process, although the maximum blank holder force of 13000 N was applied. The optimum condition was found when the drawing process was performed using blank holder force of 3500 N, deep drawing force of 7000 N, friction coefficient of 0.25 and speed of punch stroke of 0.84 mm/sec. This research demonstrated that an antilock brake mechanic system can be implemented effectively to prevent cracking in deep drawing process. IntroductionA drawing process refers to a sheet metal forming process where a sheet metal is radially drawn into a forming die by implementing a mechanical action of punch. It is called "deep drawing" when the depth of the drawn part exceed the diameter of the product. Although this process has been known and used for many years, there are many problems that may occur during the process and still become the attraction of many researchers. The process of deep drawing and problems that often occur in this process are illustrated in Figure 1. Controlling the flow of material properly during a deep drawing process is very important in order to prevent product defects such as wrinkling and cracking. Endelt, B [1] investigate the application of a flexible blank-holder system to adjust the blank-holder pressure individually in different zones in the flange area [1]. The draw-in of the flange is influenced by the blank-holder pressure and therefore, the draw-in can be controlled by adjusting/controlling the pressure. Online

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Experimental Study and Analysis of the Influence of Drawbead against Restriction and Deep Drawing Force of Rectangular Cup-Cans with Tin Plate Material

Cited by 4 publications

References 3 publications

Analytical Study and FEM Simulation of the Maximum Varying Blank Holder Force to Prevent Cracking on Cylindrical Cup Deep Drawing

Analytical Study and FEM Simulation of the Maximum Varying Blank Holder Force to Prevent Cracking on Cylindrical Cup Deep Drawing

Development of Porous Material and Hybrid Porous Ti6Al4V Dental Implants using Metal Injection Molding (MIM)

Simulation of Metal Flow to Investigate the Application of Antilock Brake Mechanic System in Deep Drawing Process of Cup

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