Global ꞏ June 2019

Knife for plastic shredder with longer service life

Contact us

Description of the case

To crush plastic is originating from the selection of a recycling plant.

The steel that was used in the past was tool steel (DIN 1.2379). The rotation speed of the shredder is 600 rpm, approx. The problems are cracks and important chipping on the edges that means complicated regrinding. Replaced with Hardox® 600.

Dimensions and Quantities:

Thickness 15 mm. The shredder has 6 rotating cutting edges (45º) and 4 fixed (15 º). The sizes are 396 x 70 and 396 x 46 respectively.

Service Life and Status:

Cutting edges in DIN 1.2379 have a service life of a week, after regrinding is necessary; Hardox® 600 has a service life of  9 days before regrinding. The turnover could be 5 Tn / year.

Case details

Key success factors

Improved service life: 20%

New service life: Similar to previous

New solution
Hardox® 600
Old solution

Tool steel

Industry and wearpart
Recycling , Shredders , Knives