Replacement for Thermoset

[hrvat]

I'm looking for a replacement for Durez 31906 Black phenolic. My problem is the lack of dimensional stability, and wear resistance after molding - both of which I have to improve. I'm willing to look at other phenolics, or even other MATERIALS all together.

Thanks for any suggestions!

 

[13]

can you give any more information about this part?
what kind of dimensional stability do you need and under what conditions-humidity, temperature?
what kind of wear?
thanks

 

[hrvat]

It is a "flat" base plate that acts as a wear pad for a machine that operates (slides) mainly on wood. Flatness is the most important characteristic, followed by various concentricity call-outs. The warping, and shrinkage is not being controlled by the molder. I realize that the molder's processing is partly to blame, but I know that there is a better material out there to achieve my needs.

Temperature is not a factor (the sliding action on this plate is at a very low velocity). Humidity can be an issue, but this part is not being loaded funtionally.

Thanks

 

[13]

If this is a one-time part would you think of having the piece machined?
Unfortunately if the plate is not supported correctly, under humidity and temperature variations, the plate will deform. How about a plastic top screwed into a metal back plate? Then you dont have to worry about warpage.
Or if you could take the molded part and have it "finish" machined. Take it to a machine shop and have them do some surfacing to square the planes.

Good Luck.

 

[Thermoset]

hrvat, a helpful website is

http://www.plenco.com

you can find material data, process guidelines, mold and part design tips. Also, you might want to investigate castable high hardness Polyurethanes ... 75 to 85 Shore-D Hardness. This
material offers high wear resistance & high load bearing strength. Tooling cost for building open cast molds are very low. There are numerous suppliers out there that will do a turn-key job for you