The Versatility of Vitrified CBN Grinding Wheels
Vitrified cubic boron nitride (CBN) grinding wheels are the backbone of precision machining for hardened ferrous materials—thanks to CBN’s exceptional hardness (4,500–5,000 HV) and chemical inertness to iron, paired with a vitrified (ceramic) bond’s thermal stability and shape retention. At Zhengzhou Ruizuan, our vitrified CBN wheels are engineered with proprietary ceramic formulations and high-purity CBN grains to solve the most demanding grinding challenges, from finishing automotive gears to machining aerospace superalloys. This guide answers the critical question: What materials can vitrified CBN wheels process? while detailing their technical advantages, target workpieces, and compatible grinding methods.
Core Features of Ruizuan’s Vitrified CBN Grinding Wheels
Our vitrified CBN wheels stand out for their ability to balance precision, efficiency, and durability:Proprietary Vitrified Bond System；Titanium-Coated CBN Grains；Thermal Stability Up to 1,300°C； Low Wear Rate.
Materials Processed by Vitrified CBN Grinding Wheels
Vitrified CBN wheels are exclusively designed for ferrous metals and alloys with hardness ≥50 HRC (hardened grades). Their chemical inertness and hardness make them ineffective for non-ferrous metals (use vitrified diamond wheels instead) but unrivaled for the following materials:
1.Hardened Carbon & Alloy Steels (50–65 HRC)
Key Materials: 40CrNiMoA (shafts), 20CrMnTi (gears), GCr15 (bearings), 65Mn (springs).
Target Workpieces:
Automotive: Transmission gears, crankshaft journals, bearing races (achieves Ra 0.05μm surface finish and ±0.002mm roundness).
Industrial Machinery: Hydraulic valve spools, linear guide rails, precision shafts (maintains dimensional stability in high-load operations).
2.Tool Steels (58–65 HRC)
Key Materials: W18Cr4V (high-speed steel/HSS), D2 (cold-work die steel), H13 (hot-work die steel).
Target Workpieces:
Cutting Tools: HSS end mills, D2 die inserts, H13 forging dies (sharpens cutting edges with radius <5μm, extending tool life by 30%).
Mold & Die: Precision mold cavities for plastic injection molding (delivers Ra 0.08μm surface finish, eliminating post-grinding polishing).
3.Cast Irons (40–55 HRC)
Key Materials: Ductile iron (ADI), gray cast iron (HT300), malleable cast iron.
Target Workpieces:
Automotive: ADI crankshafts, HT300 engine blocks (reduces material removal time by 25% vs. alumina wheels).
Heavy Machinery: Cast iron bearing housings (prevents graphite smearing, a common issue with resin-bonded wheels).
Processing Advantage: CBN’s resistance to abrasion from graphite particles in cast iron extends wheel life by 2–3x compared to silicon carbide (SiC) wheels.
How to Select the Right Vitrified CBN Wheel for Your Material
To maximize performance, align wheel specifications with your target material and grinding method:
Grit Size: Coarse (60#–100#) for roughing hardened steel; medium (120#–240#) for semi-finishing; fine (320#–600#) for superfinishing (e.g., Ra <0.1μm).
CBN Concentration: 75–100% for roughing (high MRR); 125–150% for finishing (consistent surface quality); 150–200% for precision form grinding.
Bond Hardness: HRA 78–82 for semi-automatic grinders; HRA 83–88 for high-rigidity CNC machines (prevents bond wear in tight-tolerance applications).
Ruizuan’s vitrified CBN grinding wheels are engineered to unlock the full potential of hardened ferrous materials—from 50 HRC cast iron to 65 HRC tool steel. By combining proprietary ceramic bonds, high-purity CBN grains, and compatibility with key grinding methods, we deliver solutions that boost efficiency, reduce costs, and meet the strictest industry standards.
Post time: Sep-13-2025