The recycling industry is facing serious blade loss problems, especially in paper mills and plastic recycling fields (such as PP/PE films, woven bags, PET bottles, etc.). These materials contain impurities and pollutants, posing great challenges to the blades of the grinding machine. The traditional D2 and DC53 material blades have three major shortcomings: firstly, they wear out very quickly, with severe wear or dullness occurring when processing 10-30 tons of material, and their service life is less than one week; Secondly, the cost of replacement is high, with weekly shutdowns for tool changes resulting in a production line efficiency loss of over 20%, and an annual maintenance cost increase of 150000 to 300000 yuan; Thirdly, the adaptability to impurities is poor, and conventional blade designs are difficult to cope with the impact of mixed materials, resulting in frequent material jamming and entanglement, which seriously affects production efficiency.

The field of recycled material processing is undergoing material innovation. Traditional D2 tool steel (HRC58-61) and DC53 mold steel (HRC62-64) need to be replaced when processing 10-40 tons of material due to limited wear resistance. High speed steel (HSS, HRC63-66) forms dispersed carbide hard spots through tungsten molybdenum alloy, which increases its wear resistance by 5-8 times and has a measured processing capacity of 800-1100 tons. The more advanced tungsten steel alloy (HRC82-85) strengthens the matrix with superhard tungsten carbide particles, and laboratory data shows a lifespan of over 1100 tons, especially suitable for extreme recycling conditions with high loads and strong impacts, significantly extending the service life of cutting tools.

Optimization of blade tooth structure: reconstruction of crushing logic with 3.8mm tooth pitch
Tooth pitch widening: increased from 2.5mm to ≥ 3.8mm, increased slag passing rate by 40%, and reduced winding jamming by 60%;
Buffer groove design: The groove depth is increased to 5-8mm, creating an impact buffering space and reducing the risk of direct impact from the cutting edge;
Angle optimization: Adjust the front angle to 22 ° (original 15 °), increase the back angle to 18 °, reduce cutting resistance by 28%, and synchronously reduce energy consumption. After optimization, the anti winding performance of the blade has been improved by 60%, and the stability of continuous operation has been increased by 3 times.

Togo practical case: industrial verification of 1100 ton lifespan
Customer operating conditions:
Material type: Mixed waste paper recycling material (containing 30% plastic film, 15% sediment impurities, and 1% metal impurities)
Process flow: Cleaning line → Double stage granulation → Two filtration → PNMF-800 grinding disc crushing
Core configuration: HSS high-speed steel blade+3.8mm tooth pitch design
Effect data:
A single set of blades can operate continuously for 180 days, with a processing capacity of 1107 tons
The grinding mesh size remains stable at 20-25 mesh, and the particle size uniformity is ≥ 92%
Compared to the original plan, the frequency of blade replacement has been reduced from once a week to once every six months, saving an annual cost of 270000 yuan

Unlock Durable Solution Instantly: 3 Steps to Get Customized Services
Scan the code to submit a material sample (with a template for impurity component detection form attached)
Free comparison test report on wear between HSS blades and traditional blades
The engineering team will provide an exclusive adaptation plan for the production line within 72 hours

Conclusion
In the era of “ton cost competition” in recycled material processing, blade durability has become a core variable in production line efficiency. From actual testing in Togo, Africa to laboratory data verification, the combination scheme of high-speed steel material and structural optimization is reshaping the industrial standard of recycled material crushing with a disruptive performance of 5-8 times longer lifespan and 40% energy consumption reduction.