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Specialty Glass Frits for Superabrasive Grinding Wheels
Our specialty glass frits are used in the vitrified bonds necessary to hold abrasives together in superabrasive grinding wheels that utilize cubic boron nitride (cBN) and diamond.
Ferro’s specialty glass frits are used to created vitrified bonds needed to embed and bind abrasive grains together in superabrasive grinding wheels. Our glass frits impart excellent wetting behavior along with free-cutting behavior when precision grinding ferrous materials such as hardened steel or nickel-based alloys.
Superabrasive grinding wheels made with vitrified bonds are specifically designed to provide extremely strong adhesion to the cBN grain through a strong ceramic bond, enabling G-ratio (volume ratio of stock removed to wheel wear) values of 10,000 or more. This ceramic bond strength can be varied by controlling the temperature, and blending our specialty glass frits allows our customers to tailor the ceramic to the superabrasive conditions and needs.
Additional property modification can be achieved by using a ceramic-coated grain offered by GE Superabrasives.
SPECIALTY FRITS FOR VITRIFIED BONDS IN SUPERABRASVIE GRINDING WHEELS PROPERTY DATA
Ferro glass products 90 740 F, 90 741 F, and 90 742 F are glasses with a strong tendency to recrystallize.
Special glasses for the ceramic bonding of superabrasives
| Softening behavior | Composition | ||||||||||||||||||||
| Product Number | Density g/cm3 |
Linear Coefficient of Thermal Expansion(20-400°C) x 10-7 / K |
Transformation temperature °C | Beginning of softening°C | Half-ball temperature °C | Li2O | Na2O | K2O | F | B2O3 | Al2O3 | CaO | MgO | BaO | SiO2 | ZrO2 | TiO2 | Bi2O3 | Application | ||
| 40 582 TF* | 2.5 | 68 | 422 | 780 | 870 | 5-20% | <5% | 5-20% | 5-20% | 5-20% | 5% | <5% | 20% | Diamond, CBN | |||||||
| 90 740 F | 2.8 | 77 | 470 | 680 | 760 | 5-20% | <5% | >20% | 20% | >20% | <5% | Diamond, CBN | |||||||||
| 90 741 F | 2.7 | 84 | 498 | 620 | 740 | <5% | 5-20% | <5% | 5-20% | 5-20% | 5% | <5% | 20% | <5% | <5% | <5% | Diamond, CBN | ||||
| 90 742 F | 2.7 | 84 | 486 | 600 | 720 | 5-20% | <5% | <5% | <5% | 5-20% | 5% | 5% | <5% | 20% | 5-20% | <5% | <5% | Diamond, CBN | |||
| 90 743 F | 2.6 | 60 | 702 | 890 | 1080 | 5-20% | <5% | 5-20% | 5-20% | 5-20% |
<5% | 5-20% | 20% | 5-20% | CBN, High Performance Application Corundum | ||||||
SPECIALTY GLASS FRITS FOR VITRITIFED BONDS IN SUPERABRASIVE GRINDING WHEELS PRODUCT INFORMATION
Ferro Specialty Glass Frits for SuperAbrasive Grinding Wheels Product Data
VALUE ADDED SERVICES
Applications Technology Support-Custom Formulations
We work closely with our customers to co-innovate and develop customized high-performing and economical specialty glass based on individual application requirements.
