Corrugated slitting is one of the most abrasive industrial cutting applications. The substrate is a multi-layer composite of kraft paper + adhesive + flute geometry, running at 200–500 m/min. The wrong blade grade loses 50 % of life. This guide covers single-face, double-face and thin-board slitting, with grade maps and field cases.
Crusher blades take the largest impact loads in industrial cutting. A 30 mm M16 nut in a granulator feed will shatter a D2 blade in 200 cycles. This guide covers jaw, hammer, rotary and impact crusher blades for stone, ore, scrap and ASR.
Doctor blades see high-speed scraping, ink chemistry and metrology-grade edge geometry. The wrong steel grade produces streaking, ghosting, or a 20 % scrap rate. This guide walks through the substrate, the ink, the line speed, the steel grade and the edge prep for flexo, gravure and coating lines.
Foam and rubber substrates are gummy, abrasive and chemically variable. The wrong blade grade galls immediately, the wrong edge geometry produces a torn surface, and the wrong cooling makes the problem worse. This guide covers PU foam, PE foam, EPDM rubber, silicone rubber and natural rubber slitting and shearing.
Granulator rotor and bed knives see impact, contamination and abrasive fillers. The right grade, geometry and edge prep separates a 2-week knife from a 6-month one. This guide covers rotor, bed, screen and wear-strip selection for film, rigid, fibre and filled polymer recycling.
Paper slitting looks simple until you account for the substrate GSM, the caliper variation, the trim, the lay-flat tension and the line speed. This guide walks through the substrate map, the steel grade decision, the edge-prep and clearance targets, and the line-side conditions that determine whether your slitter lasts 7 days or 70 days.