Conveyor belt steel cord types

Elastomers Compounding Processing

Standards / norms Equations Underground US dimensions Steel cords Engineering tables Papers

Handling/Storage Reel dimensions Stringing Textile belt splices Textile belt splicing Steel cord belt splices Steel cord belt splicing Splice testing

First belt Strongest belt Strongest underground belt Highest capacity belt Longest belt Heaviest belt First self-extinguishing belt Fastest belt

Belt designation Carcass types Cover grades Elastomers Glossary of terms

Rip detection Carcass health monitoring Splice health monitoring Surface monitoring Conveyor safety devices

Closed conveyor belts Energy saving belts Aramid belts

TECHNICAL

STEEL CORD/CABLE CONSTRUCTIONS
	This is a 7x7 (7 strands of 7 wires) open type steel cord (or cable) with four different wire diameters. The advantage of open type steel cords is the high rubberization of the cord gaps - for higher steel cord pull-out strength and better corrosion prevention. The cable diameter is measured as per DIN 3051.
	In a steel cord conveyor belt, Z and S lay steel cords are used alternately to ensure a straight running behaviour of the belt. The illustration shows a regular lay. The lay length of the sheath is the length along the strand in order for a wire to make one complete revolution around the king wire.

STEEL CORD PROTECTION
It is of utmost importance to protect the steel cords from damages by rubbing or corrosion. This is usually achieved by choosing the right cord construction, fire zinc coating and full rubberization.The photograph shows an ungummed conveyor belt steel cord after 10000 revolutions and storage in water for 24 hours.. It shows chafe marks with frictional corrosion and zinc hydroxide

So-called "Cable Belts" are not covered by this website. It is a trademark and not a standardized term.
Such belts are sensitive to impact, because there are no steel cords in it but only thin fabric.
Their transverse rigidity is achieved by transverse steel or fiber glass bars. Thus the troughing angle is small, so the belt has to run faster (with all the disadvantages caused by that).
The wear of the many support sheaves is high as are the maintenance costs.
Huge buildings are required for the tensioning and drive station.
If only one cable fails then the entire system is collapsing.

STEEL CORD/CABLE CONSTRUCTIONS

STEEL CORD PROTECTION