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.

Specialty Glass Frits for Super Abrasive Grinding Wheels

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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  Li2  Na2O    K2 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 

 

*Ready-to-use bonding, GHS symbol 07, H phrases 302, 332   Particle size: F = fine  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


SPECIALTY GLASS FRITS FOR VITRITIFED BONDS IN SUPERABRASIVE GRINDING WHEELS PRODUCT INFORMATION

Ferro Specialty Glass Frits for SuperAbrasive Grinding Wheels Product Data


 

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