The purpose of this study was to determine the weld ability of HDPE
sheets (High Density Polyethylene) through the method of welding FSW
(Friction Stir Welding). FSW is a new welding process, where joined of
the material occurs in the solid state. Samples were welded with
vertical milling CNC machines, while the type of connection is a butt
joint. This study used three process parameters, two parameters are
combined and one parameter value is constant, the parameters combined
are temperature backing plate (30; 70; 110 and 150 oC) and the welding
tool rotation speed (2200; 2300 and 2400 rpm), while the parameters with
constant value is the welding speed (30 mm / min).
In this research
experiment conducted observations and analysis of surface textures
welded joints, weld surface temperature during the process in front of
and behind the welding tools, macro-structure of the welded joints, the
maximum tensile strength and fracture tensile test results. From the
results of this study was obtained that temperature backing plate during
FSW process affects the maximum tensile strength and homogeneity of
HDPE sheets welded joints. The maximum tensile strength of welded joints
higher is 28.52 MPa or 95.07% of the maximum tensile strength of HDPE
material, the maximum ultimate tensile strength values were obtained on
the condition temperature backing plate t = 150 oC and the welding tool
rotation speed n = 2300 rpm. Heating the material HDPEby backing plate
during FSW process insulator properties of the material that is an
obstacle inthe process of forming a perfect weld can be resolved.
http://rekayasamesin.ub.ac.id/index.php/rm/article/view/138/136
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