Why Use Vitrified Bond for Grinding Wheels?
A grinding wheel has three components:
- Abrasive grains that do actual cutting.
- Bond which holds together the abrasive grains in the wheel while they cut and releases grains when they become dull, so as to provide new sharp grains.
- Structure which is the void or air space left between adjacent grains coated with bond, so as to provide chip clearance.
Table of Contents
There are 5 Main Types of Bond in Grinding Wheels
Let’s dig deep inside bond types used for grinding wheels
- Vitrified Bond
- Resinoid Bond
- Rubber Bond
- Shellac Bond
- Oxychloride (Magnesite) Bond
Vitrified Bond
The term “vitrified” in its simplest form means “glassy” or “glass bond”. Abrasive materials such as aluminium oxide, silicon carbide, diamond and CBN are mixed with glass frit and other ceramic material like (clays, feldspar, etc…).
Blended mixtures are then pressed and sintered .On sintering, the glass and ceramic components are fused and melted together hard vitrified bond that holds the abrasive material in place.
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Vitrified Bonded Grinding Wheels
Why use vitrified bonded grinding wheel?
The vitrified grinding wheels have high levels of porosity in their structure. Porosity carries coolant through the grinding zone and provide space for chip clearance. By providing space to remove grinding swarf, the grinding wheels are able to grind faster.
Vitrified grinding wheels can remove the heat generated during grinding much more efficiently thus allowing faster grinding cycle times and less thermal damage to heat sensitive materials. Vitrified bonded wheels are also capable of high rate of stock removal in precision grinding operations.
FAQs about Why Use Vitrified Bond for Grinding Wheels?
What are the key advantages of using vitrified bond grinding wheels?
Vitrified bond grinding wheels are known for their high porosity, which improves coolant flow and chip clearance, allowing faster grinding cycles. These wheels also remove heat efficiently, reducing the risk of thermal damage to heat-sensitive materials. Their rigidity helps retain form and achieve high precision in grinding operations.
Why is vitrified bond ideal for precision grinding?
Vitrified bond wheels offer a high rate of stock removal and excellent form retention, making them ideal for precision grinding. Their rigidity ensures accurate results, and they are resistant to high temperatures, water, and oils, making them suitable for various demanding applications.
How does vitrified bond compare to other types of bonds in grinding wheels?
Compared to other bond types like resinoid, rubber, or shellac, vitrified bond wheels offer better porosity for coolant flow, heat dissipation, and chip clearance. This allows for faster grinding cycles and precision work, making them a preferred choice in precision grinding operations.
How does the structure of a vitrified bond grinding wheel affect performance?
The open structure improves coolant flow and chip clearance, reducing heat and increasing wheel life. It enables faster grinding with less thermal damage, while denser structures offer better form retention—making vitrified wheels ideal for both high-precision and high-volume applications.
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Abrasives Surface Grinding Segments
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