Abstract
To join sheets of commercial pure titanium grade 2 and nylon 6 polymer, friction lap spot welding (FLSW) was proposed. The titanium sheets were drilled to create a 3.5mm diameter hole, which was then threaded with M4. In this work, the effects of the process parameters on joint quality was investigated. The tool's rotating speed was 710, 900, 1120 RPM, the tool's plunging rate was 0.23, 0.75, 1.3mm/sec, and the tool's diameter was 8,10, and 12 mm. All of the specimens were successfully joined, according to the results. The specimens were fully dislocated from the titanium pre-hole after shearing the polymer at the lap joint region. The Ti-nylon 6 joints had shear forces ranging from 597 to 864N. The axial load measured during the joining operation is found to be 199 kg. The joint shear force was most affected by the rotating speed. The two metals were connected by a mechanical interlock at a micron-wide interface line, according to the microstructure analysis.
Published Version
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