When we think about an old tire, it is easy to focus only on the rubber. But there is quite a bit of steel inside the tire, and that steel can make a difference when the tire reaches the end of its service life.
The bead is one of the areas where steel is concentrated. Its job is to keep the tire firmly seated on the wheel, so the wire in this area is designed to be strong and resistant to movement.
Why Steel Changes the Recycling Process
Once a tire is being cut or shredded, rubber and steel behave very differently. Rubber can be cut relatively easily, while steel wire may bend, stretch, or become wrapped around moving components.
For larger tires, this can become more noticeable. Removing the bead wire before the main shredding stage can make the material easier to process and can reduce some of the problems caused by concentrated steel.
A hydraulic bead wire remover is one way of doing this. It grips the prepared bead section and uses pulling force to separate the steel wire from the rubber.
Of course, this does not mean that all of the steel in a tire disappears at this stage. Other steel reinforcement remains in the tire and normally has to be separated later during the recycling process.
I find it interesting how much engineering is hidden inside something as ordinary as a tire. The same steel that makes a tire strong on the road can become one of the main challenges when that tire needs to be processed.
Has anyone here ever cut apart an old tire and noticed how much steel reinforcement it actually contains?