Top 5 UHMW FAQ
What is UHMW-PE?
UHMW-PE stands for Ultra High Molecular Weight Polyethylene.
This is the highest strength thermoplastic available at present. It is highly
resistant to corrosive chemicals and has a very
low coefficient of friction. In fact, its
coefficient of friction is significantly lower than that of PTFE and Teflon. In
addition to that, it has higher abrasion
resistant too. There are forms of UHMW that are around 15 times more abrasion
resistant than carbon steel.
UHMW is very useful for tough jobs. Ultra high molecular
weight of this polymer is the key to its unique properties. The molecular
weight of its resins ranges between 3.5
to 7.5 million. This makes it extra strong and enables it to withstand
abrasion. Due to its high molecular weight,
it doesn’t melt or flow as a molten liquid. These properties make it an ideal
product to be used as composites plate in
armors. It is excessively used in fishing lines due to these qualities. It is an
ideal product for hydraulic seals and bearings. UHMW
Conveyor Components excel in their jobs as it has very high wear resistance
and excellent sliding properties. UHMW railing guides, curve tracks, wear
strips, belt guides, chain guide profiles and other parts are the preferred
choice of conveyor manufacturers globally.
Is UHMW Custom
Extrusion a good and economical option?
This question has two parts and both need to be answered
separately. Yes, UHMW custom extrusion is a very good option when it comes to getting a smooth finish and required size. There would be very good tolerance to your give measurements. This is
something difficult to achieve with any other process. Remember UHMW is a very
hard material. It is used in various industries which require very low
coefficient of friction and high strength.
It may or may not be an economical option for you and that
will depend upon your order size. The tooling costs are very high in UHMW custom extrusion. Calibrating the tools leads to wastage of a lot
of material. This cost will get added to the cost of the final product. So, if
your order size is considerably small then this may not be an economical
option. You can choose standard sizes in that case to avoid this cost. However,
if your order size is big then this cost will get divided evenly and you would
get a great product at a low cost. You can get UHMW-PE profiles with a smooth
finish. The ram or surge lines can be avoided if the manufacturer has the skill
and experience. This makes the careful selection of the manufacturer important.
Is it possible to get
exact specifications in UHMW Tubing?
You can get UHMW Tubing as per your exact specifications.
This is very much possible for an experienced manufacturer. UHMW Tubing techniques allow production
of all kind of simple and complex pieces with exact ID/ OD combination in
custom lengths and colors. This can be achieved through screw extrusion process.
What are the
advantages of using UHMW-PE?
UHMW products have a very high toleration of impact and this
makes them ideal for use in various industries.
It offers the unique advantage of low
friction and high strength. It works excellently well in the areas where
products with lower molecular weight grades fail.
How does UHMW react
to various chemicals?
One of the best things about UHMW is that is highly
resistant to corrosive chemicals except for
some oxidizing acids. It has very low moisture absorption and therefore it can
be safely used for underwater operations. Even organic alcohols, acids and ketones have little effect on it. Hydrogen and
nitrogen also don’t have any impact on this material.
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