Hammer Crusher
The hammer crusher is a widely used crushing equipment that crushes medium-hard and brittle materials (compressive strength ≤150 MPa) like limestone and coal via high-speed hammer impacts (800–1500 rpm). Materials are broken by impact, collision, and shearing, then discharged through a bottom sieve plate, finding applications in mining, building materials, and more due to its simple structure and high efficiency.
Its main components include: a cast steel or welded frame (ZG270-500/Q355B) with wear liners; a rotor consisting of a 40Cr main shaft, ZG310-570 rotor disk, and high-chromium cast iron (Cr15–20) hammers; a feeding port, ZGMn13 sieve plate (5–50 mm holes), 40Cr hammer shafts, bearing seats, and a 5.5–315 kW motor.
Key manufacturing processes: Hammers are sand-cast from high-chromium iron, heat-treated to HRC 55–65; rotor disks use sand-cast ZG310-570 with normalization and tempering (HB 180–220); the main shaft undergoes forging, quenching/tempering (HRC 28–32), and precision grinding.
Quality control involves material composition testing, dimensional inspection (CMM), non-destructive testing (MPT/UT), performance tests (empty/load runs), and safety checks, ensuring efficient and stable operation.
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