| SMAW WELDING CURRENT VARIATIONS EFFECTS TO THE IMPACT STRENGTH, HARDNESS AND MICRO STRUCTURE AT THE SPRING PARSLEY 9 WELD JOINT |
Penulis
YUYU GAPURANING RAHAYU
Pembimbing : Fajar Nugroho, ST., M.Eng - Nurfi Ahmadi, ST., M.Eng
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ABSTRAK :
Spring is a component that functions to receive dynamic load and provides comfort in driving. The problem is the leaf spring is sometimes broken due to the overload or unfavorable road conditions. The solution for that problem is grafting using the SMAW welding.
This study aims to determine the effect of variations in the welding current to the impact strength, hardness and microstructure. Types of weld used is SMAW with a variety of welding current of 100 A, 120 A and 140 A and the type of seam used is the type of seam V.
The highest impact strength test was 1.698 j/mm2at 100 A and the highest hardness test was 355.338 HVN at 140 A. In addition, the micro structure at the welding area has bigger grain size and more pearlite structure at 140 A.
Keywords: welding, current, impact strength, hardness, micro structure
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Tulisan Lengkap dapat Dibaca di Ruang Tesis/Disertasi
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Penulis |
: YUYU GAPURANING RAHAYU |
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NIM |
: 12040063 |
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Foto |
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File |
: [ Baca file skripsi ]
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