Recent content by Henk Trekker

@Asymptotic Thank you sir for the information, I have a design a screen with D 0.6 mm holes , 0.5 mm distance from the blades to the screen. What is a save rpm lvl?

Thank you sir for helping, my asnwer is in metric but i cannt find the answer of my fault in the formule. how did you calculate 61.67 ft-pounds.

Thats a shredder, shredder are shredding the material at low rpm high torque. granulator work in higher rpm to make granules of the material, I'm also happy if its work on 500rpm but i need first to calculate the torque and horsepower it needs to work.

Yes they like the same but they are not made for copper. this technique will make smaller parts of the copper.

working principe is like a shredder, but i don't shred and work on higher rpm. A machine with knives on a rotor, it rotate at high rpm to granulate materials to fine materials ( granules ). this granulator wil make copper wires in 3-5 mm pieces. You can look the ptf's to check the working of a...

I started calculating the needed horsepower for my project copper granulator. i come out on 250hp, its very high, i think i made a fault with the formule. Cross section area ( i take blades of the rotor height * withd ) = height : 10 cm, Withd: 12 cm. 10 * 12 = 120 / 2 = 60^2 cm Yield stress...

@trurle, thanks for improving!Yes, we all learned from mistakes.

@ Trurle, Thank you for the support! @ Some Bloke, Thank you for the support! 25000 psi ( shear stress of copper ) 0.025 m ( axis to tooth distance ) 25000 * 0.025 = 625 nm I want to granulat the scrap copper in pieces of 3 - 6 mm ( filter controls it ), the scrap copper has an little vinyl...

Summary: Single shaft copper shredder I design a rotor of a shredder, but i need to find a motor for the rotor of the shredder. My questions are: 1. What is the best rpm for a copper shredder ( what kind of effects wil the shredder have on high rpm 1200-3000, lower rpm 300-1200 ) 2. what...