Stone cutting disc

for ceramicsfor stainless steelfor metal alloys

Overview
QPREP Premium cut-off wheels are engineered for metallographic and industrial sample preparation, offering tailored abrasive and bond combinations to minimize deformation and thermal damage during separation. Available abrasives include aluminum oxide, silicon carbide, diamond and CBN with bond types in metal/bronze, resin or rubber. Fabric-reinforced FS-FR variants provide increased stability for manual cutting.

Main benefits

• Fine, reproducible cutting surfaces with low deformation
• Wide material coverage: metals, ceramics, composites, rocks and brittle coatings
• Bond and abrasive combinations matched to material for optimal cutting performance
• Reduced temperature generation and extended wheel lifetime
• Color coding for quick product identification

Color coding
Visible color codes simplify selection and rapid identification of wheel type and intended material class.

Fabric-reinforced Premium Aluminum Oxide cut-off wheels (FS-FR)
QPREP FS-FR fabric-reinforced Al2O3 wheels are designed for cutting medium-soft to hard steels (approx. 250–600 HV). The textile reinforcement increases stability and reduces wear, making these wheels especially suitable for manual separation tasks where high plane parallelism and reproducibility are required.

Product advantages (FS-FR)

• Fabric reinforcement ensures maximum stability during cutting
• Optimized for manual use and handheld cutting operations
• Wear reduced by over 30% compared to non-reinforced variants (manufacturer data)
• Precise, clean cuts with high plane parallelism
• Consistent cutting performance for reproducible results

Recommended applications (FS-FR)

• Cutting medium-soft to hard steels (250–600 HV)
• Manual cutting operations requiring stability and parallelism

Premium diamond cut-off wheel
QPREP diamond wheels target hard and brittle materials such as technical ceramics, glass-fibre reinforced plastics, minerals and glass. Available in bronze (metal) bond and synthetic resin bond variants to suit precision cutting or general-purpose needs.

Product advantages (Diamond)

• Bronze and resin bond options cover a wide application range
• Dressing function maintains diamond cutting edge performance
• Long lifetime and low abrasive wear

Recommended applications (Diamond)

• Bronze-bonded: precision cutting of Al2O3, YSZ, B4C and hard composites (WC–Co, CMC, MMC)
• Resin-bonded: cutting hard, brittle materials like hard metals, BN, Al2O3 ceramics
• Brittle coatings (TiN, DLC, ZrO2) and sample preparation of mineral/rock specimens
• High concentration (HC): universal use including hard metals and composites
• Low concentration (LC): optimized for rock, glass and ceramic samples

Premium CBN cut-off wheel (bronze bond)
QPREP CBN wheels use cubic boron nitride abrasives in a bronze bond to deliver fine cutting surfaces on nickel- and cobalt-based alloys and other very hard steels. High hardness and favorable ductility of CBN particles improve cutting efficiency and reduce wear.

Product advantages (CBN)

• Excellent thermal conductivity of CBN dissipates cutting heat
• Extended lifetime with low wear rates
• Dressing functionality restores and maintains cutting-edge performance

Recommended applications (CBN)

• Cutting composite materials (e.g., CFRP, GFRP, BFRP)
• Cutting very hard steels (CrV, MnCr, CrMoV and similar alloys)

Cutting wheel selection guidance
Selection is driven by material class and hardness. Choose abrasive and bond combinations that minimize deformation and thermal effects while maximizing lifetime and cut quality. Use the product color coding for fast visual selection.

Technical specifications

• Abrasives: Aluminum oxide (Al2O3), silicon carbide, diamond, CBN
• Bond types: metal/bronze, resin, rubber
• Reinforcement: fabric-reinforced variants (FS-FR) for enhanced stability in manual cutting
• Target material hardness ranges: FS-FR Al2O3 for steels ≈ 250–600 HV (example)
• Wear reduction: fabric reinforcement reduces wear by >30% (manufacturer data)
• Dressing functionality: available for diamond and CBN wheels to maintain edge performance
• Applications: metallographic sample preparation across metals, ceramics, composites, geology/mineralogy and hard/brittle materials
• Advantages: fine cutting surface, low deformation, long lifetime, reproducible cutting performance