Hard pin removal made easy

[Geo]

All,

So grind ball mill then magnet separation would be the wise choice when scrapping pins from a ton of PCBs?

Thanks
Kevin

this will work for HDPE but low density plastic would be a nightmare in a ball mill. the soft plastic has a lower melting point and the action of the mill generates enough heat to soften it even more. this will cause it to smear and create lumps fouling the mill and the charge. low density plastic should be removed before milling.

 

[kjavanb123]

Geo,

Thanks for your respond, please advise if you refer to PCI sockets or memory sockets as HDPE type plastic cover? how would you recognize with plastic would not stand the heat produced in the ball mill? I have a plastic shredder in the shop i will be working, would that be better than ball mill to do the job of separating the pins from the plastic cover?

Thanks
Kevin

 

[Geo]

the best i can tell you is most slot connectors that the PCI cards (with fingers) plug into is high density plastic as it tends to break before it bends very far. the connectors that ribbon cables plug into are low density plastic as they can be twisted double without breaking. breaking can be a good test, if the plastic breaks before it bends, it can be milled. if the plastic can be bent without breaking, it can not be milled.