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Why Does The Ultra High Molecular Weight Polyethylene Sheet Rail Wear Out?

Aug 19, 2019

Ultra-high molecular weight is a distinctive feature of this polymer, with a molecular weight of 3 to 6 million, while high-density polyethylene resin is only 300,000 to 500,000. This difference is to ensure that UHMWPE has sufficient strength to achieve wear and impact resistance that is not possible with other lower polymer products.


UHMWPE's extremely high molecular weight gives it excellent performance, and it is a moderately priced, high-performance thermoplastic engineering plastic that combines the advantages of various plastics.


It has unmatched wear resistance, impact resistance, self-lubrication, corrosion resistance, impact energy absorption, low temperature resistance, hygienic non-toxicity, non-sticking, non-absorbent water absorption and low density. In fact, there is currently no single polymer material with so many excellent properties.


Why does the ultra high molecular weight polyethylene sheet rail wear out?


Wear is a phenomenon in which the working surface material of the object is damaged or lost in relative motion. There are many ways to classify wear. The high molecular polyethylene rail can be divided into abrasive wear, adhesive wear, corrosion wear, erosion wear, contact fatigue wear, impact wear, fretting wear and the like.


Under working conditions, several forms of wear often occur simultaneously or sequentially, and the interaction of wear failure presents a more complex form. Determining the type of workpiece wear failure is the basis for the rational selection or development of wear resistant steel.


In the industrial field, abrasive wear and adhesive wear account for the proportion of wear failure of the workpiece. Wear and failure modes such as corrosion, corrosion, fatigue, and fretting often occur in the operation of some important components, and are therefore receiving more and more attention.


Component wear is also a system engineering problem. There are many factors affecting the wear of polymer sheets, including working conditions (load, speed, mode of motion), lubrication conditions, environmental factors (humidity, temperature, surrounding medium, etc.), material factors (composition, structure, mechanical properties), surface quality, Parts and materials. Changes in the physical and chemical properties of various factors may change the amount of wear and even change the wear mechanism.