Quantitative Evaluation of Tool Wear in Cold Stamping of Ultra-High-Strength Steel Sheets

Bang, Junho; Kim, Minki; Bae, Gyuyeol; Song, Jung‐Han; Kim, Hong-Gee; Lee, Myoung‐Gyu

doi:10.1007/s12540-022-01244-2

Cited by 12 publications

(21 citation statements)

References 40 publications

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“…A two-step tempering was performed at 530 • C for 200 min to reduce brittleness caused by quenching. The Vickers hardness at a 0.1 kgf normal load of the STD-11 tool steel was 788.5 ± 12.2 HV 0.1 , which was referred to in previous literature [35]. The chemical compositions of TRIP1180 steel and STD-11 tool steel are listed in Table 3.…”

Section: Methodsmentioning

confidence: 85%

“…The steel sheet used in this work was an uncoated transformation-induced plasticity (TRIP) steel sheet with a tensile strength of 1180 MPa (TRIP1180) and a thickness of 1.2 mm, which was produced by POSCO Pohang steelworks. The uniaxial tensile properties of a 1.2-mm-thick TRIP1180 steel sheet were obtained from previous work [35], which is summarized in Table 1. The punch for forming the steel sheet during the wear test was composed of STD-11 tool steel (KS D 3753) manufactured by POSCO Pohang Steelworks.…”

Section: Methodsmentioning

confidence: 99%

“…The punch geometry is presented in Figure 2. Dimensions of both punch shapes are previously reported in detail in the literature [35]. Die-to-punch gap was defined as 1.32 mm to avoid ironing, which is 10% clearance.…”

Section: Methodsmentioning

confidence: 99%

“…The geometrical parameters for the stamping process were the same as in a previous report. In sheet metal forming, failure can be determined from visible scratches and rough wear tracks on the surface of the formed products [35,40,41]. To identify the evolutionary In general, when forming UHSS, several thousand to tens of thousands of strokes are required to examine the wear characteristics of coated tools.…”

Section: Methodsmentioning

confidence: 99%

“…A wear test should be fast, convenient, efficient, and economical to investigate the wear characteristics of a stamping tool and reflect the real stamping conditions prevalent in automotive sheet metal forming. Bang et al [35] proposed a systematic wear test methodology using a progressive die set in sheet metal forming. This apparatus was designed to conduct wear evaluation of four types of punches simultaneously with a single press stroke.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Efficient Wear Simulation Methodology for Predicting Nonlinear Wear Behavior of Tools in Sheet Metal Forming

et al. 2022

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In conventional wear simulation, the geometry must be updated for succeeding iterations to predict the accumulated wear. However, repeating this procedure up to the desired iteration is rather time consuming. Thus, a wear simulation process capable of reasonable quantitative wear prediction in reduced computational time is needed. This study aimed to develop an efficient wear simulation method to predict quantitative wear reasonably in reduced computational time without updating the geometry for succeeding iterations. The wear resistance of a stamping tool was quantitatively evaluated for different punch shapes (R3.0 and R5.5) and coating conditions (physical vapor deposition of CrN and AlTiCrN coatings) by using a progressive die set. To capture the nonlinear wear behavior with respect to strokes, a nonlinear equation from a modified form of Archard’s wear model was proposed. By utilizing the scale factor representing the changes in wear properties with respect to wear depth as input, the simulation can predict the behavior of rapidly increasing wear depth with respect to strokes after failure initiation. Furthermore, the proposed simulation method is efficient in terms of computational time because it does not need to perform geometry updates.

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Section: Methodsmentioning

confidence: 85%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Efficient Wear Simulation Methodology for Predicting Nonlinear Wear Behavior of Tools in Sheet Metal Forming

et al. 2022

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PVD coated dies in action: Exploring finite element analyses for sheet metal forming of high‐strength steel

Sivarajan,

Neto,

Oliveira

et al. 2024

Lubrication Science

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This research proposes a complete analysis of the use of physical vapour deposition coated dies in the sheet metal forming process for high‐strength‐steel sheets. The goal of the proposed approach is to investigate how PVD coatings affect die performance and how that affects the formability and quality of the high‐strength‐steel‐sheets that are made. The finite element analyses are used to simulate and evaluate the mechanical behaviour and deformation characteristics during the forming process. Studies to enhance the forming characteristics of these materials, typically denoted by limiting draw ratio and maximum punch force are required. A reduction in punch force required and improved limiting draw ratio is observed that is attributed to the enhanced contact with friction‐conditions in the die‐sheet interfaces. The experimental results are compared with simulation results from DD3IMP, a code used for deep drawing simulations, and it is evident that the experimental outcomes are analysed well with the simulation results.

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Investigation on deformation characteristic of electromagnetic punching process in AA5182 aluminum alloy sheet

Duan,

Hong,

Dong

et al. 2023

Int J Adv Manuf Technol

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Quantitative Evaluation of Tool Wear in Cold Stamping of Ultra-High-Strength Steel Sheets

Cited by 12 publications

References 40 publications

Efficient Wear Simulation Methodology for Predicting Nonlinear Wear Behavior of Tools in Sheet Metal Forming

Efficient Wear Simulation Methodology for Predicting Nonlinear Wear Behavior of Tools in Sheet Metal Forming

PVD coated dies in action: Exploring finite element analyses for sheet metal forming of high‐strength steel

Investigation on deformation characteristic of electromagnetic punching process in AA5182 aluminum alloy sheet

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