FRICTION STIR WELD REPORT.docx - FAKULTI TEKNOLOGI KEJURUTERAAN MEKANIKAL DAN PEMBUATAN UNIVERSITI TEKNIKAL MALAYSIA MELAKA JOINING TECHNOLOGY BMMP 3523

FRICTION STIR WELD REPORT.docx - FAKULTI TEKNOLOGI...

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FRICTION STIR WELDING 1 FAKULTI TEKNOLOGI KEJURUTERAAN MEKANIKAL DAN PEMBUATAN UNIVERSITI TEKNIKAL MALAYSIA MELAKA JOINING TECHNOLOGY BMMP 3523 REV :01 LAB 1: FRICTION STIR WELDING NAMES OF GROUP MEMBERS & MATRIX NUMBER 1. NUR AMILIN HATIARA BINTI NORHAYAMI B071710725 2. MUHAMMAD SIRAJUDDIN BIN HAMDZAH B071710833 3. MUHAMMAD KHAIRI BIN SHARI B071710473 4. HAZIQ AFIFFUDDIN BIN AMINUDDIN BAKI B071710511 5. COURSE 3 BMMP 1/2 NAME OF INSTRUCTOR 1. MOHD FAUZI BIN MAMAT EXAMINER’S COMMENT VERIFICATION STAMP TOTAL MARKS : REV NO DESCRIPTION DATE OF REVISON 01 C ontents reviewed after 5 years 30/8/2018 02 03 04
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1.0 OBJECTIVES The objectives of this laboratory are; 1. Perform the Friction Stir Welding in order to welding butt joint of aluminium plates. 2. Investigate the effect of welding parameters such as arc current, voltage, travel speed and feed rate on the welding conditions and strength. 3. Analyze the welding parameters against tensile strengths of the weld. 2.0 INTRODUCTION Friction stir welding (FSW) is a solid state joining process that uses a non-consumable tool to join two facing workpieces without melting the workpiece material. Heat is generated by friction between the rotating tool and the workpiece material, which leads to a softened region near the FSW tool. While the tool is traversed along the joint line, it mechanically intermixes the two pieces of metal, and forges the hot and softened metal by the mechanical pressure, which is applied by the tool, much like joining clay, or dough. It is primarily used on wrought or extruded aluminum and particularly for structures which need very high weld strength. A rotating cylindrical tool with a profiled probe is fed into a butt joint between two clamped workpieces, until the shoulder, which has a larger diameter than the pin, touches the surface of the workpieces. The probe is slightly shorter than the weld depth required, with the tool shoulder riding atop the work surface. After a short dwell time, the tool is moved forward along the joint line at the pre-set welding speed. This process of the tool traversing along the weld line in a plasticized tubular shaft of metal results in severe solid state deformation involving dynamic recrystallization of the base material. FSW is a process which produces welds of high quality in difficult to weld materials such as aluminum, and is fast becoming the process of choice for manufacturing lightweight transport structures such as boats , trains and aero planes .
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