we tried with 1200 to 1500 rpm with feed rate of 10 mm/min kindly suggest some optimal range
Dear Venu
As reported by "DOI: 10.1016/j.matdes.2011.09.008" for 4 mm thick polyethylene sheet with a 18 mm diameter shoulder and a pin with a diameter of 6 mm, a length of 3.8 mm, speed of 3000 rpm, the tool traverse speed of 115 mm/min and the tilt angle of 3°. but it should be highly considered that the maximum strength depends not only to tool rotational speed and feet rate, bu also to too design( pin and shoulder size, tool angle, threaded or not), and even parameters like shoulder plunge depth and direction of tool rotation which can highly effect the weld quality. based on my own experience, a rotational speed of around 1500 (1200-1800) with an experimentally achieved feed rate ( not too slow which makes PE burnt or other over heating problems and not too high which makes melt not to have enough time to consolidate) can lead to good results for initial goals, then taguchi method can be applied to find the optimum levels of the chosen parameters,
I hope this information can help you. feel free to contact me
Dear Venu
overall, you can find some numbers as optimum rotational speed and feed rates in literature, but because the weld quality highly depends on tool geometry, based on my own experience, for PE its best to start around 1500(1200-1800) and experimentally find an appropriate feed rate ( not too slow because of over heating and over mixing and not too high because of insufficient consolidation time). I think its best for initial purposes.
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