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As an addition to the recent researches, I am also working on extrusion of beams.   I will research PP and HDPE on 3 different temperatures and 3 different speeds to see what works the most efficient. With all the samples I will do a deflection test to see if these setting changes the stiffness and quality of the beams. The extruder runs with a gearbox slowing down the motor with a factor 10. I will run the extrusion on 1.5 (15/10), 3 (30/10) and 5  (50/10) Hertz which results in 90 rpm, 180 rpm, 300 rpm The temperatures I will use are: 160-170, 180-190, 200-210 for PP and 140-150, 160-170, 180-190 for HDPE Each test will take 1 hour: resulting in 3*3*2=18 hours of testing. The tube is use is 2 meters long and 50X50 mm with 4 mm walls.
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