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KARE GEOMETRİNİN HİDROMEKANİK DERİN ÇEKME YÖNTEMİ İLE ŞEKİLLENDİRİLEBİLİRLİĞİNİN DENEYSEL İNCELENMESİ

EXPERIMENTAL INVESTIGATION ON THE FORMABILITY OF SQUARESHAPED CUPS BY HYDROMECHANICAL DEEP DRAWING PROCESS

Journal Name:

  • Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

Publication Year:

  • 2013

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
Hydromechanical deep drawing (HDD), as an advanced forming technology, is gaining continuous interest in the sheet metal forming industry. Current research, investigates the formability of copper (Cu) and Erdemir 6112 (DC01) sheet blanks through hydromechanical deep drawing. Experiments have been carried out using custom designed and built hydromechanical forming test setup. The effects of process parameters such as chamber pressure (pi = 10 MPa, 20 MPa, 30 MPa), die radius (r = 4 mm, 6 mm, 8 mm), punch velocity (v = 6 mm/s, 12 mm/s, 18 mm/s), sheet metal thickness (t0 = 0,5 mm, 0,8 mm, 1,0 mm) and initial blank diameter (D = 120 mm, 130 mm, 140 mm) have been evaluated for the formability of square cup. In experimental studies; the limit drawing ratio of 2.6 was achieved in a single step operation for both material types. The results showed that smaller thickness variations for square-shaped cups were obtained in hydromechanical deep drawing process compared to the conventional deep drawing process.
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Abstract (Original Language): 
Hidromekanik derin çekme prosesi, sac metal malzemelerin şekillendirilmesinde giderek artan öneme sahip bir ileri şekillendirme teknolojisidir. Bu çalışmada; hidromekanik derin çekme yöntemiyle, Bakır (Cu) ve Erdemir 6112 (DC01) sac metallerin kare geometrili kap olarak şekillendirilebilirliği araştırılmıştır. Deneysel çalışmalar; çalışmanın amacına yönelik tasarlanan ve imal edilen bir hidromekanik derin çekme deney düzeneğinde gerçekleştirilmiştir. Hidromekanik derin çekmede; kalıp içindeki hidrolik sıvı basıncının (pi = 10 MPa, 20 MPa, 30 MPa), kalıp kavisinin (r = 4 mm, 6 mm, 8 mm), şekillendirme hızının (v = 6 mm/s, 12 mm/s, 18 mm/s), sac malzeme kalınlığının (t0 = 0,5 mm, 0,8 mm, 1,0 mm) ve başlangıç sac çapının (D = 120 mm, 130 mm, 140 mm) şekillendirilebilirlik üzerindeki etkileri deneysel olarak incelenmiştir. Deneysel çalışmalarda; hidromekanik derin çekme yönteminin kullanılmasıyla, Bakır ve Erdemir 6112 sac malzeme için tek seferde 2,6 çekme oranına ulaşılabilmiştir. Şekillendirilen ürünlerin klasik derin çekme yöntemine göre daha homojen bir kalınlık dağılımı gösterdiği tespit edilmiştir.
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  • Turkish

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