Case Overview
Full-process acceptance-trial case study: GFRP (glass fiber reinforced plastic) scrap ground to 60–70 mesh on the ZFS-250 using low-speed grinding. Demonstrates the low-speed, blade-free squeezing-and-rubbing process on FRP waste.
1. Material and Target
| Material Type | GFRP (glass fiber reinforced plastic) scrap |
|---|---|
| Initial Condition | Glass fiber reinforced plastic blocks / offcuts; high hardness; contains a resin matrix |
| Material Source | Customer-supplied material for acceptance trial |
| Key Challenge | FRP has high hardness combined with a tough resin matrix — conventional high-speed cutting tools wear quickly and generate large amounts of dust |
| Target Mesh | 60–70 mesh (approx. 212–250 μm) |
| Downstream Use | SMC / BMC molding filler, building material reinforcement filler |
2. Case Visuals
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Raw Material
On-Site
Finished Product
3. Equipment Setup
- Core Equipment: ZFS-250 FRP Grinding Machine
- Process Route: Blocks direct feeding → low-speed blade-free squeezing-and-rubbing grinding → 60–70 mesh screened output
- Auxiliary System: Fully enclosed design + dust-collection interface
4. Process Highlights
Low-Speed, Low-Stress Grinding
The ZFS-250 uses a low-speed, blade-free squeezing-and-rubbing process — distinct from high-speed impact crushing. Size reduction is achieved through mutual compression between materials, reducing reliance on metal tooling and minimizing wear from high-hardness GFRP on the equipment.
Fiber Protection
Low-speed grinding causes the glass fibers to fracture in a brittle radial pattern. At 60–70 mesh, a portion of the fiber skeleton structure is retained in the output, which benefits the mechanical performance of downstream SMC / BMC molded products.
Dust-Free & Environmentally Compliant
The fully enclosed design combined with a dust-collection interface effectively controls FRP dust, meeting workshop environmental standards.
5. Result Summary
- Output: Uniform 60–70 mesh powder containing short glass fibers and resin particles; no large residual pieces
- Powder Properties: The glass fiber short-fiber skeleton is retained, making it suitable as a molding reinforcement filler
- Applications: SMC / BMC molding filler, building reinforcement materials, recycled composite filler
6. Related Resources
FRP Grinding Machine
Low-speed low-stress grinding, adapted to multiple material forms