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UHMW Abrasion Resistance

UHMW Abrasion Resistance

UHMW Abrasion Resistance

(OP)
I am considering laminating some table tops (steel plate top) with 1/4" or 1/2" thick UHMW (see McMaster items 84945K815) to slide heavy dies across.  The dies weigh about 2000# each.  I was thinking of using an adhesive to mount the UHMW.

I am choosing this instead of rollers because of the lower assembly and labor costs.  We would do this on at least a dozen pieces of equipment.

Does anyone know what a good adhesive would be for UHMW to steel?

Does this sound like a bad idea all together?  We would be moving dies across the UHMW 6 to 12 times a day.  

New computer viruses?  That could be nice.

RE: UHMW Abrasion Resistance

Using an approximate coefficient of friction of 0.16 (dry), you would have to push with over 300lbf to get the dies to slide.  Best-case, if you're oil-lubricated, you get 0.05 coefficient, which is still 100lbf to push.  

RE: UHMW Abrasion Resistance

(OP)
Thanks for the reply.  We do have a mechanism to move it across the table that will give us mechanical advantage.  However, it is not enough for dry steel on steel.

My concerns are what is a good adhesive between steel and UHMW and what kind of loading issues should I be concerned about?  

New computer viruses?  That could be nice.

RE: UHMW Abrasion Resistance

I'd use Teflon and I'd screw it down with flat-heads rather than use glue.

Don
Kansas City

RE: UHMW Abrasion Resistance

I agree with eromlignod, mechanical fasteneres are preferred over messy adhesives, especially since these wear strips are going to become a maintenace point.

"Art without engineering is dreaming; Engineering without art is calculating."

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RE: UHMW Abrasion Resistance

Can you impliment some sort of air bearing to provide a temporary float for the heavy part?
 (put some small channels in the plastic top and hoses from the back),would probably require some valving arrangement and an air supply but it could effectively reduce the friction to about zero

RE: UHMW Abrasion Resistance

(OP)
Teflon is about 5-6 times the price of UHMW.  That is not an option for us.

RE: UHMW Abrasion Resistance

(OP)
I like the sound of that.  I sent them an RFQ for rubber backed Tivar 1000 at 3/8" thick.  Thanks.

RE: UHMW Abrasion Resistance

You may have to go to thicker sheet for your loads. We had a similar situation with approximately half the load and had to go to 1/2.

RE: UHMW Abrasion Resistance

In the case of UHMW-TIVAR88, to be a material of low coefficient of friction, it is possible that the adhesive, be not a good idea, for the case of 1/2", once use screws to fix to the base, then it was covered with a badge of the same UHMW, bony perforation fixed with screw-nut and then covered.

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