A customer recently asked us for tips on machining uhmw materials to better hold tolerances.
Uhmw machining tips.
Uhmw is a poor choice as a bearing for two reasons.
2 uhmw has low load bearing capabilities 500 800psi.
When dimensional stability and distortion requirements of the finished product are most stringent particularly under alternating thermal stress annealing of the semi finished product is recommended.
We can machine intricate parts on our cnc swiss machines and cnc turning centers.
The main application we here at redwood plastics see uhmw incorrectly used in is bearing applications.
Uhmw is a very unstable material to machine since it has roughly 12x the thermal expansion of steel.
Some of the key factors that we like to review include the size and geometry of the part the speeds and feeds of the machine plus the types of.
Uhmw parts easy to fabricate uhmw is also used for packaging conveyor and food processing machinery parts including star wheels idler sprockets and under chain wear strips.
It has the highest impact strength of any thermoplastic and is highly.
Like all polyethylenes uhmw has a low melting point 270 and a high cof 120 x10 in in üf which all contribute to the challenge.
When not to use uhmw.
Machining is the principal method used to fabricate finished parts from redco uhmw.
1 it is difficult to machine to tight tolerances 0 02 are the best you can usually hope for and.
Ultra high molecular weight polyethylene uhmw is a high density plastic ideal for screw machine parts that require extremely high resistance to wear and abrasion.
Uhmw wood replacement uhmw offers very low moisture absorption and is a popular choice for marine construction applications like dock fender pads pile guards.
