Effect of initial blank temperature in hot press forming towards 22MnB5 springback failure

Ng, Chuan Huat; Lai, Chee Fung; Yahaya, Shamy Nazrein Md; Shamsudin, Shazarel; Ahmad, Syarifah Nur Aqida Syed; Sharrifuddin, F.

doi:10.15282/jmes.13.2.2019.25.0422

Cited by 6 publications

(3 citation statements)

References 25 publications

(27 reference statements)

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“…The blank sheet then will be put through austenitization and then transfers to calibration and quenching. This stage was the inherent stage for the process chain to ensure the required high strength properties achieved [18]. There were three recognized ways to achieve lightweight automobile which includes optimizing vehicle frames and structures, making vehicle body out of new and alternative materials such as ultrahigh strength steel to reduce the vehicle mass, and adopting advanced manufacturing techniques for automobile lightweight such as thickness-gradient high strength steel (HSS) or metal-based compound plates by hot press forming.…”

Section: Hot Press Forming (Hpf)mentioning

confidence: 99%

An Overview on Forming Process and Heat Treatments For Heat Treatable Aluminium Alloy

Yahaya¹,

Azmi²,

Huat³

et al. 2020

ARFMTS

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Weight reduction and material substitution were increasing trends in the automotive industry due to the growing demand for more fuel-efficient vehicles to reduce energy consumption nowadays. The characteristic properties of aluminium alloy which includes high strength stiffness to weight ratio, good corrosion resistance, and high recycling potential make it the ideal candidate to replace the other materials (Steel or copper) currently used in cars. The replacement to aluminium alloy parts is on par to the weight reduction demand within automotive industry. The focus on lightweight had also brought the attention on the high strength Aluminium alloy. Its high mechanical properties and excellent strength to weight ratio had made it suitable for car frame parts. In order to improve its mechanical properties, the heat treatment technique make it the suitable process to implement in aluminium alloy for produce the car body parts. The process of heat treatment was same as hot stamping technique which is this process was to improve its mechanical properties. Hence, in order to define and identified the heat treatment technique available, this paper had reviewed on the development of forming process and heat treatment condition applied toward aluminium alloy throughout the years.

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Section: Hot Press Forming (Hpf)mentioning

confidence: 99%

An Overview on Forming Process and Heat Treatments For Heat Treatable Aluminium Alloy

Yahaya¹,

Azmi²,

Huat³

et al. 2020

ARFMTS

View full text Add to dashboard Cite

show abstract

“…Therefore, different methods of sheet metal forming have been researched and developed. This tendency has made a big motivation for studies on sheet technology to be done with considerable achievements [1][2][3][4][5][6]. In sheet metal forming process, thinning variations occur in most areas of the products and considerably affect the product quality, especially in drawing operation [2].…”

Section: Introductionmentioning

confidence: 99%

On the thinning variations in hydrostatic forming of sheet metal

Nguyen

Trung

2021

JMES

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In sheet metal forming, thinning phenomenon is one of the most concerned topics to ameliorate the final quality of the manufactured parts. The thinning variations depend on many input parameters, such as technological parameters, geometric shape of die, workpiece’s materials, and forming methods. Hydrostatic forming technology is particularly suitable for forming thin-shell products with complex shapes. However, due to the forming characteristics, the thinning variations in this technology are much more intense than in other forming methods. Therefore, in this paper, an empirical study is developed to determine the thinning variations in hydrostatic forming for cylindrical cup. Measurement of thickness at various locations of deformed products are conducted to investigate the thickness distribution and determine the dependence of the largest thinning ratio on the input parameters (including the blank holder pressure, the relative depth of the die and the relative thickness of the workpiece). The results are expressed in charts and equation which allow determining the effect of each input parameter on the largest thinning ratio.

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“…Giorleo [6] focused the research evaluating the preform geometry influence on an industrial Ring Rolling process; the results showed that a decrease of the starting preform ring height could guarantee less energy and loads, less defects and material saving. Zhu [7] investigated different geometries and ring dimensions to find optimal blank design principle for Axial-section in Ring Rolling. The effect of initial blank temperature was analyzed by Ng [8] while the forming limit by Mianroodi [9] in case of mild steel.…”

Section: Introductionmentioning

confidence: 99%

Ring Rolling speed rolls optimization to improve ring quality and reduce production time

Allegri¹,

Giorleo²

2020

JMES

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In this paper, an analysis of the production time reduction as a function of the Idle and Axial rolls speed law in a Ring Rolling process was examined. Starting from an industrial case study, the authors defined a new milling curve able to produce a better ring quality with lower loads. From this result, the authors tested the effect of the production time reduction till the 40% of the initial one. The Ide roll velocity was varied in a range between 0.71 and 1.13 mm/s while the Axial roll between 0.35 and 1.70 mm/s. Geometrical and load parameters have been taken into account to compare the results achieved. The authors identified in the external ring diameter and in the Idle roll maximum load the most critical parameter to control; in particular, a break-even point was determined in order to select a set of rolls speed laws able to produce a good quality ring with lower production time (about 20%) and lower loads (about 10 %). In this research both experimental and numerical approaches were followed.

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Effect of initial blank temperature in hot press forming towards 22MnB5 springback failure

Cited by 6 publications

References 25 publications

An Overview on Forming Process and Heat Treatments For Heat Treatable Aluminium Alloy

An Overview on Forming Process and Heat Treatments For Heat Treatable Aluminium Alloy

On the thinning variations in hydrostatic forming of sheet metal

Ring Rolling speed rolls optimization to improve ring quality and reduce production time

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