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Polyparts manufacture Cast Link Chains in irons and steels. This was the chain construction originally employed in the early days but we also provide other standards Cast Link Chains.
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Cast link chains has significant benefit being gained in a one piece construction obviating the need for press fits or welds. In addition there is almost limitless flexibility in the materials employed to achieve exactly the properties the customer is seeking whether this is in corrosion resistance, heat resistance, abrasion resistance or a combination of the three.
IRONS – For conventional links in iron, spheroidal graphite has replaced the white heart malleable originally employed and from this ductile material a greater range of mechanical properties can be accessed.
Significant advantage has been gained in the employment of Austempered Ductile iron a fully pearlitic material that through an austempering heat treatment process offers mechanical properties similar to alloy steels with a reduced weight typical of iron. This enhancement through a cyanide quench operation also introduces a work hardening characteristic.
CAST STEELS – allow the Engineer to select for best option in most applications whether this be 420 high chrome steel for heat and abrasion in such as a moving grate or High manganese steel which work hardens the more punishment it is given and through this unique quality has become predominant within cement clinker transport.