Machsupport Forum

Tangent Corner => Tangent Corner => Topic started by: fer_mayrl on March 08, 2009, 04:56:51 PM

Title: Metal shredder
Post by: fer_mayrl on March 08, 2009, 04:56:51 PM

Hello guys,
Anyone here has some experience working with shredders for metal?
Im really interested in some of its key characteristics.
Please let me know if anyone knows anything about them.

Best regards
Fernando

Title: Re: Metal shredder
Post by: Chaoticone on March 08, 2009, 05:00:23 PM

What type metal Fernando? Steel strapping? Chunks of huge iron castings?

Brett

Title: Re: Metal shredder
Post by: Overloaded on March 08, 2009, 06:59:32 PM

I saw an automobile shreader recently on TV. It was basically a large hammer mill. The hammers weighed 800 lbs. each.
Brutal piece of equipment.
 

RC

Title: Re: Metal shredder
Post by: fer_mayrl on March 09, 2009, 01:39:44 AM

There is a lot of shredder footage on the internet on shredders, from aluminum cans, to boats and automobiles.


I was looking for information on something that could chew up scrap sheet metal.
I was kind of trying to figure out the RPM of the hammers, the material of the hamers, how are the hammers held in place once they are slid in the Hex shaft.... stuff like that.

its really impressive to see them work.

Title: Re: Metal shredder
Post by: Tweakie.CNC on March 10, 2009, 04:02:29 AM

In the UK they call these machines fragmentation plants. They usually have 4 hammers (which are bell shaped in section) which are free to pivot within a central hub which is rotated by a motor (big motor). Underneath the hammer assembly is a grille of about 100mm mesh and everything that is placed in the hopper above gets smashed by the hammers until it drops through the grille.

The machines are usually conveyor belt fed from grab cranes and everything that goes in (cars that have been previously crushed into blocks - scrap etc.) comes out as scrolls of gray metal witch all looks exactly the same. Quite an amazing sight.

Tweakie.

Title: Re: Metal shredder
Post by: fer_mayrl on March 10, 2009, 11:41:39 AM

Tweakie,
Actually, the machine you just described is called a hammer mill, it does not work under the same principle of a shredder.

A shredder has 2 or 4 counter rotating shafts fitted if shear blades, instead of crushing the metal, it gets pinched between the blades and gets sheared.

http://www.ssiworld.com/watch/steel_drums.htm

watch that

Fernando

Title: Re: Metal shredder
Post by: Tweakie.CNC on March 10, 2009, 11:51:43 AM

Wow ! - don't want to let your CNC anywhere near that.

Tweakie.

Title: Re: Metal shredder
Post by: Overloaded on March 10, 2009, 01:12:03 PM

GOOD LORD MAN ! !
That is one BRUTAL piece of equipment there.....Jeeesh !
If you bend over to look in......watch out for your neck tie and ponytail.
Thanks Fer,
RC

Title: Re: Metal shredder
Post by: Chaoticone on March 10, 2009, 04:15:14 PM

Yup, thats a nicen.  :)

Brett

Title: Re: Metal shredder
Post by: RICH on March 10, 2009, 06:36:49 PM

The Mafia don't know what they are missing in the new world of things!  >:D
Ouch  ;D
RICH

Title: Re: Metal shredder
Post by: BClemens on March 17, 2009, 05:45:48 PM

OSHA will not approve this device. Desk weenies will we we their britches with just a glance, and that is enough! DISAPPROVED!

Bill C.


Where can we buy one....!

Title: Re: Metal shredder
Post by: Hood on May 02, 2009, 07:13:20 PM

Not sure what that vid showed as it wouldnt open for me but remembered seeing this one http://www.liveleak.com/view?i=8b2_1227825460
has some pics of the build so you may get some clues from that.

Hood

Title: Re: Metal shredder
Post by: Overloaded on May 02, 2009, 08:58:54 PM

HOLY CRAP ! ! !
That SOB is VISCIOUS ! >:D
Will try to download the whole vid tonight, (7+ hrs on dial up) first 2 minutes are impressive.
I would LMAO if one of the forks fell in accidentally. It might eat it but my guess is it would stall.
Thanks Hood,
RC

Title: Re: Metal shredder
Post by: Tweakie.CNC on May 03, 2009, 05:55:19 AM

They are certainly some machines Hood has posted the video of.

Tweakie.

Title: Re: Metal shredder
Post by: Chaoticone on May 03, 2009, 07:09:39 AM

Yup, those are some nice ones.

Brett

Title: Re: Metal shredder
Post by: ger21 on May 03, 2009, 09:42:36 AM

http://www.ssiworld.com/watch/shred_of_the_month-april_2009.htm