AA 5754-O ALAŞIMININ ILIK DERİN ÇEKİLMESİ ÜZERİNE KALIP YÜZEY AÇISI ve BASKI PLAKASI KUVVETİNİN ETKİSİNİN DENEYSEL ARAŞTIRILMASI

Özek, Cebeli; Taşdemir, Vedat

doi:10.17341/gazimmfd.300608

Cited by 4 publications

(4 citation statements)

References 20 publications

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“…Within the scope of the study, it is observed that when the temperature is increased from room temperature to 250 °C, the forming force decreases by an average of 20.55% (table 2). This situation is consistent with the literature [4] that analysed the effect of different temperatures on the stamping force of AA5754 sheet material in deep drawing processes using experimental and finite element methods. According to the analysis results, when the temperature was increased from room temperature to 250 °C, the stamping force decreased by approximately 22.69%.…”

Section: Analyses Of Warm Deep Drawing Process Resultssupporting

confidence: 92%

“…An important advantage of this process is that it is carried out below the recrystallization temperature, the microstructure does not change, and the sheet material's mechanical properties are unaffected. Developing warm-forming processes in the automotive and aerospace industries is crucial to produce lighter vehicles using aluminium and magnesium alloys to reduce fuel consumption and lower exhaust emissions [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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Investigation of tribological performance of hydrothermal carbon by pin-on-disc test and warm deep drawing process

Yurt,

Sen,

Simsir

et al. 2024

Surf. Topogr.: Metrol. Prop.

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In this study, the synthesis of hydrothermal carbon (HTC) lubricant and its usability as a lubricant under hot industrial conditions were investigated. In this context, the characterization of hydrothermal carbon (HTC) produced from organic sources at low cost and in a short time was performed, and its tribological performance was analysed in detail. HTC produced by the hydrothermal carbonization method was characterized through SEM images and EDS analysis. To determine the effect of HTC on friction at different temperatures, it was subjected to a pin-on-disc wear test with AA5754 material. The effect of various lubricants, temperatures, blank holder pressure, and forming speed parameters on the forming force for the analysis of the tribological effect of HTC on deep drawing processes were statistically analysed. The performance of HTC was compared with Teflon, fullerenes, graphene, and carbon nanotube (CNT) materials. According to the results obtained from wear tests, it was determined that the lowest friction coefficient value was achieved in the presence of fullerenes as the lubricant, and as the temperature increased, the friction coefficient decreased. It was observed that HTC exhibited lower performance in the wear test compared to fullerenes due to oxidation. When the effect of deep drawing parameters on the forming force was analysed, it was concluded that the most effective parameters were temperature (72.32%) and lubricant (20.89%). According to the S/N analysis results, the minimum forming force was obtained under the conditions of solid Teflon lubricant, 250°C temperature, 15-bar blank holder pressure, and 2 mm/s forming speed. The tribological performance difference between HTC and Teflon is at the 1% level. The results demonstrate the potential industrial usability of HTC as a lubricant.

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Section: Analyses Of Warm Deep Drawing Process Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Investigation of tribological performance of hydrothermal carbon by pin-on-disc test and warm deep drawing process

Yurt,

Sen,

Simsir

et al. 2024

Surf. Topogr.: Metrol. Prop.

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“…Özek ve Taşdemir'in bir başka çalışmasında ise AA 5754-O alaşımının oda sıcaklığı, 100°C, 175°C ve 250°C sıcaklıklarda kalıp ve baskı plakası yüzeylerine 0°, 5°, 10° ve 15°'lik açılar vererek derin çekmeye olan etkilerini araştırmışlardır. Araştırma sonucunda, sıcaklığın etkisiyle baskı plakası kuvvetindeki artışa rağmen et kalınlığı değişiminin azaldığını, sıcaklık ve kalıp yüzey açısı ile birlikte malzeme akışının kolaylaştığını, kalınlık dağılışının daha homojen hale geldiğini ve sıcaklığın artmasıyla geri esnemenin azaldığını belirlemişlerdir [13].…”

Section: = Dunclassified

DP600 Malzemenin Şekillendirilmesinde Değişken Baskı Plakası Kuvvetinin Etkisinin Araştırılması

Şen

2018

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Otomotiv üreticileri hem ağırlık/dayanım oranının düşürülmesinde hem de çarpışma anında daha mukavemetli araçları üretmek için ultra yüksek mukavemetli malzemelerin kullanım oranını gittikçe artırmaktadır. Bu çalışmada, ultra yüksek mukavemetli DP600 malzemesi için sonlu elemanlar yöntemi kullanılarak şekillendirebilirlik analizi yapılmıştır. Kalıp tasarımı yapılarak belirli bir geometride ve başlangıçta 1 mm kalınlığındaki sac malzeme için sanal ortamda hem sabit hem de değişken baskı plakası kuvvetlerinde derin çekme işlemi uygulanarak malzemenin oda şartlarında her iki farklı yöntem için sınır çekme oranı belirlenmiştir. Derin çekme analizleri sonucunda değişken baskı plakası kuvveti kullanılarak sınır çekme oranı 2,07'den 2,12'ye yükseldiği tespit edilmiştir.

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“…Although the lubrication conditions, microstructure and temperature plays a dominant role during a deep drawing process, geometrical features of the die setup such as die shoulder radius, punch edge radius and die angle have deterministic effects on the deep drawing process [21]- [24]. In literature, it has been stated that the use of a conical die for the deep drawing process may enhance the DDR [25], [26].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Conical Die Deep Drawing Ability of DP800 and MART1400 Ad-vanced High Strength Steels

ŞEN,

CİVEK,

TONGÜ

2023

International Journal of Automotive Science and Technology

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Deep drawing is one of the most important and vastly conducted sheet metal forming method. Thus, even small improvements achieved on the deep drawability of sheet metals significantly increases the ability of sheet metal to be formed into more complex products. Advanced high strength steels (AHSSs) are one of the most popular steels in the automotive industry due to their high strengths. However, their low ductility causes considerable splitting problems on the shop floors. In this study, deep drawing experiments have been conducted in conical dies with four different angles (0⁰, 7.5⁰, 12.5⁰, and 20⁰) for DP800 and MART1400 steels to observe whether a higher deep drawing ratio (DDR) can be achieved by deep drawing in conical dies for AHSSs. In addition, finite element analysis (FEA) has been utilized to estimate the DDR for each types of steels in different conical die setups. It has been observed that the deep drawing ability of MART1400 steel has not improved in any of the conical die setups. However, DDR of DP800 has slightly increased by 2.46% by deep drawing with 20⁰ die angle. A good agreement with the numerical and experimental results has been achieved.

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AA 5754-O ALAŞIMININ ILIK DERİN ÇEKİLMESİ ÜZERİNE KALIP YÜZEY AÇISI ve BASKI PLAKASI KUVVETİNİN ETKİSİNİN DENEYSEL ARAŞTIRILMASI

Abstract:  AA5754-O alaşımının ılık derin çekilmesi  Et kalınlığı ve şekillendirme kuvvetine sıcaklık, kalıp yüzey açısı ve baskı plakası kuvvetinin etkisi  Çekilen kaplardaki sertlik ve geri yaylanma ilişkisi

Cited by 4 publications

References 20 publications

Investigation of tribological performance of hydrothermal carbon by pin-on-disc test and warm deep drawing process

Investigation of tribological performance of hydrothermal carbon by pin-on-disc test and warm deep drawing process

DP600 Malzemenin Şekillendirilmesinde Değişken Baskı Plakası Kuvvetinin Etkisinin Araştırılması

Assessment of Conical Die Deep Drawing Ability of DP800 and MART1400 Ad-vanced High Strength Steels

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