Experimental research on warm deep drawing of HC420LA grade sheet material

Şen, Nuri̇; Karaağaç, İbrahim; Kurgan, Naci

doi:10.1007/s00170-016-8617-1

Cited by 9 publications

(6 citation statements)

References 12 publications

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“…In this regard, scientists and researchers started a tendency to various applications to reduce fossil fuel consumption in transportation. For this purpose, some of them tried to modify the vehicle design [3][4][5] such as light-material usage and geometry changes, while others tried to modify the fuels [6].…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of combustion, performance and emission characteristics of a diesel engine fuelled with diesel–biodiesel–alcohol blends

Ağbulut

Sarıdemir

Albayrak

2019

J Braz. Soc. Mech. Sci. Eng.

147

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The purpose of this study is to investigate the impacts of diesel-biodiesel-alcohol blends on the combustion, performance and emissions characteristics of a single-cylinder diesel engine. Tests were conducted at different engine speeds of 1750, 2250, 2750 and 3250 rpm and under full load. In this study, different fuels [called as reference diesel (D100), 20 vol% cottonseed methyl ester (D80C20), 10 vol% ethanol (D90E10) and finally the ternary type of their derivations (D70C20E10)], were used. The experimental results showed that the highest reduction values were observed on CO emission by 42%, 30% and 8% for the D90E10, D70C20E10 and D80C20 fuels, respectively. These reductions for HC emission were achieved as 40%, 31% and 23% for the D90E10, D70C20E10 and D80C20, respectively. On the other hand, the reductions of NO x and CO 2 emissions were not sharp and varied between 2-7%. Besides the reductions on the exhaust emissions, biodiesel-ethanol blend presented better results in terms of HRR max and CP max than using biodiesel alone. Additionally, ignition delay of the biodiesel blends was longer than that of D100 fuel owing to their low cetane numbers. Combustion duration was shortened with the increment in engine speed because the turbulence increased in the combustion chamber at high engine speed. This case also improved the homogeneity of test fuels and increased the quality of the combustion process. As a consequence, this paper clearly reported that it is possible to achieve fewer emissions, the highest CP max values with the presence of ethanol in biodiesel fuels rather than using biodiesel alone for diesel engines.

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Section: Introductionmentioning

confidence: 99%

“…(3) and(4) were used:Taking into account the empirical constants in Eq. (2), the values of EP i,d and EP i,w in Eqs (5). and(6) were derived.…”

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confidence: 99%

Experimental investigation of combustion, performance and emission characteristics of a diesel engine fuelled with diesel–biodiesel–alcohol blends

Ağbulut

Sarıdemir

Albayrak

2019

J Braz. Soc. Mech. Sci. Eng.

147

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“…However, sheet metal products with a high drawing ratio that cannot be formed by conventional deep drawing processes can be formed using hydroforming methods or hot forming methods where the die set or material is heated. [9][10][11][12][13][14][15][16][17][18] To increase the formability in the hydromechanical deep drawing process-a hydroforming methodthe positive effects of pre-bulging in the opposite direction of forming on deep drawability have been experimentally and analytically proven in published literature. Lang et al investigated the effects of pre-bulging on deep drawability in the hydromechanical deep drawing process with finite element analyses and experimental studies.…”

Section: Introductionmentioning

confidence: 99%

A novel approach to the conventional deep drawing process

Kabakçi

Karaağaç

Demirel

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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In this study, the mechanical formability of Al6061-T6 sheet material using a pre-bulging process was experimentally investigated. Therefore, an innovative die entrance design was applied to conventional deep drawing dies. In addition to the formability of the Al6061-T6 material, the effects of the innovative design on the energy consumption and thickness distribution were also investigated. For the experimental studies, deep drawing dies capable of mechanically pre-bulging at 0°, 15°, and 30° angles were designed and experimental studies were carried out at a 10 mm/sec forming speed with constant blank holder force. It was observed that the Al6061-T6 material, which was drawn at the highest ratio of ß = 2.0 in a single operation with the conventional deep drawing method, can be deep drawn at a drawing ratio of ß = 2.2 in a single operation with this new method, and the forming force was reduced by 24.45%. It was found that the deep-drawn Al6061-T6 sample, which was drawn at the highest ß = 2.2 drawing ratio, exhibited a maximum sheet thinning of 15%, and it could be formed with a single die in a single operation without forming defects such as cracking and wrinkling.

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“…Wang et al stated that when bending AZ31B magnesium alloy sheet in the temperature range of 50°C–300°C, the springback decreased with increasing temperature [22]. Nuri Şen, in his studies, increased the LDR ratio of local heating and also reported that the springback decreased with increasing temperature [23, 24].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the formability of ultrahigh-strength sheet material using local heat treatment

Şen

2019

Ironmaking & Steelmaking

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In this study, the effects of local heat treatment temperature on the V-bending formability of Martensitic 1200 steel, was investigated experimentally. In the first stage of the study, local heating temperatures were determined according to the stress-strain curves obtained as a result of the hot tensile test. Other experimental parameters included temperature (room temperature -RT/25, 300, 400 and 500°C), die-punch angle (30, 60, 90 and 120°) and punch holding time (0 and 10 s). The heating procedure in the bending operation was carried out locally only in the bending zone with the temperature controlled heating rod. The hardness values were found as 5.19% HV at the forming temperatures of RT-300°C, 2.31% HV at 300-400°C and 1.85% HV at 400-500°C. Due to the coarseness of the carbides in the microstructure, softening of the sheet material was observed up to 400°C. The slight increase in the flexure observed in the sheet materials bent at 500°C was caused by secondary precipitation hardening.

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Experimental research on warm deep drawing of HC420LA grade sheet material

Cited by 9 publications

References 12 publications

Experimental investigation of combustion, performance and emission characteristics of a diesel engine fuelled with diesel–biodiesel–alcohol blends

Experimental investigation of combustion, performance and emission characteristics of a diesel engine fuelled with diesel–biodiesel–alcohol blends

A novel approach to the conventional deep drawing process

Experimental investigation of the formability of ultrahigh-strength sheet material using local heat treatment

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