Crusher blade

Explanation and Introduction:

Crusher bladeIt is the core component in the crushing equipment, and its performance directly affects the crushing efficiency, particle uniformity, and equipment life.

1、 Common types and structures

1. Dual axis shearing cutter

-Structure: Two axis staggered arrangement, blade with hook shaped edge

-Applicable: crushing of metal waste, tires, and large garbage

-Advantages: High torque design, strong anti winding ability

2. Hammer blade group

-Structure: rotor+movable hammer plate+screen mesh

-Applicable to brittle materials such as wood and biomass

-Features: Mainly impact crushing, low replacement cost

3. Turbo type cutterhead*

-Structure: Multi layer disc stacking+fixed blade

-Applicable: Plastic film, fiber materials

-Advantage: Simultaneous airflow sorting

IICrusher bladeMaintenance and troubleshooting

High frequency fault solution:

1. Blade passivation

-Symptoms: Capacity decline of 15%+, uneven particle size

-Processing: Timely sharpening (grinding amount<0.2mm/time)

2. Knife body fracture

-Main cause: metal foreign objects entering or heat treatment defects

-Prevention: Installation of metal detectors+impact testing acceptance

3. Bolt cutting

-Key: Use 12.9 grade high-strength bolts+hydraulic torque wrench for pre tightening

-Specification: Tighten after 1 hour of operation

Selection and upgrade suggestions

1. Material evolution route

T10 steel → D2 tool steel → powder metallurgy high-speed steel (such as ASP60) → tungsten carbide sintered blade

2. Surface strengthening technology

-PVD coated titanium (TiAlN): Increases wear resistance by 3 times

-Laser cladding: repairing worn areas, extending lifespan by 2 times

Safety operation standards

During maintenance, it is necessary to:

-Double person operation system (1 person for operation+1 person for supervision)

-Mechanical locking+energy isolation

-Use specialized knife holder handling tools

2. Prohibited items for operation:

-Exceeding the rated feeding speed (refer to motor current monitoring)

-Fiber materials with a moisture content greater than 30% (which can easily cause fabric entanglement)

Tip: When the frequency of blade replacement increases abnormally, it is necessary to focus on checking the rotor dynamic balance and bearing clearance. Suggest everyPerform centering calibration after 200 working hours.

Select the cutter configuration scheme based on specific material characteristics (Mohs hardness, fiber content, corrosiveness, etc.), and if necessary, provide material samples for customized optimization of crushing tests.