FAQ

The correct installation and dressing of resin diamond grinding wheels are crucial for ensuring their performance and service life.

Installation:

Verify the grinding wheel information to ensure it meets the operational requirements.

Inspect the grinding wheel’s appearance to ensure it is damage-free.

Assemble the resin bond diamond wheel onto the spindle freely, avoiding excessive force.

Use a flange to securely clamp the grinding wheel, ensuring stable clamping with uniform pressure distribution.

Use a standard wrench for tightening, avoiding the use of an extended wrench or hammering.

Dressing:

Dressing can be done using a conventional abrasive grinding wheel.

During dressing, the diamond grinding wheel rotates while the conventional abrasive grinding wheel rotates and feeds simultaneously.

Monitor the conventional abrasive grinding wheel’s wear during dressing and replace it promptly when necessary.

Maintain appropriate dressing pressure and speed.

Diamond applications

Diamond is the hardest abrasive material in the world.

Its hardness, wear and thermal resistance made the diamond the most appropriate abrasive to machining such materials as:

• Hard metal

• Cermet

• Hard metal/steel combinations

• Glass

• Quartz

• Ceramic materials of all kinds

• Ferrotitanite

• Carbide-based powder coating

• Graphite

• Polycrystalline diamond and CBN blanks

• Ceramic magnetic materials

• Glass and carbon-fiber reinforced synthetic materials

• Tungsten Carbide

CBN applications

CBN is the second material after diamond. CBN is produced similarly to the diamond by high pressure and high-temperature aynthesis. Due to their chemical features and considerable lower wear, CBN tools are used for grinding such hard-to-process steels as:

• HarHardened high-speed steel (HSS)

• High alloyed steels with at least 55 HRC

• Case-hardened steels

• Iron-based powder coatings

• Chill castings

• Soft steels in certain applications

• Stellite

  
  

CDX applications

CDX is a special superabrasive material with the performance between diamond and CBN. It is mainly used to grind the compound of hard&fragile material (like TCT) and Ferrous material (like Chilled steel).

The chosen grit size affects the performance of the wheel determining the stock remove rate and surface finishing that can be achieved coarser grit size enables a higher material removal rate and rougher surface finishing, while a fine grit size is used for attaining a smoother surface finishing.

Truing and Dressing are necessary for keeping your super abrasive grinding wheel in ultimate working condition.

Truing gives the grinding wheel its geometrical accuracy and makes it run true while dressing opens up the grinding wheel, and exposes the abrasive grit by clearing away bond material from around the cutting edges.

While coolant plays a crucial role in the grinding process with grinding wheels, there are certain specific circumstances where the use of coolant may not be necessary. Here are some situations where coolant can be omitted:

1. Dry Grinding: In certain applications, such as dry grinding, coolant may not be used. Dry grinding is primarily used in situations where the surface quality requirements for the workpiece are not high, or the workpiece material is not susceptible to thermal damage. However, it should be noted that dry grinding may generate more heat and grinding swarf, causing greater wear on the grinding wheel and workpiece.

2. Specific Grinding Wheels: For some certain grinding wheels, such as those with special resin binders, have self-lubricating properties that can reduce friction and heat generation to a certain extent, thus eliminating the need for coolant. However, this situation is relatively rare and still requires evaluation based on specific conditions.

3. Short-Duration Grinding: For very short time grinding operations, such as removing minor defects or performing quick trimming on the workpiece surface, the use of coolant may not be necessary. This is because the heat generated during short time grinding is limited and unlikely to cause significant thermal damage to the workpiece.

4. Special Process Requirements: In some special process requirements, where maintaining certain characteristics of the workpiece surface (such as hardness, color, etc.) from being affected by coolant is necessary, coolant can be omitted. However, in such cases, it is important to ensure that the heat generated during the grinding process does not adversely affect the workpiece.

It should be emphasized that, despite the possibility of omitting coolant in certain situations, it is generally recommended to use coolant to ensure grinding effectiveness, workpiece quality, and extended grinding wheel lifespan. Especially in high-precision grinding, heavy-duty grinding, or long-duration grinding, the use of coolant is indispensable. Therefore, in practical operations, a balance and choice should be made based on specific conditions and requirements.

Grinding wheels play a crucial role in machining processes, so their maintenance is particularly important. To ensure the long-lasting use and efficient grinding of grinding wheels, we need to regularly inspect them to ensure their surfaces are free of cracks, damage, or irregular wear. At the same time, maintaining the sharpness of the grinding wheel is also crucial. As processing time increases, the grinding wheel will gradually wear down, reducing its cutting ability. At this point, it is necessary to dress the grinding wheel to restore its sharpness.

Furthermore, when the grinding wheel wears to a certain extent or shows severe irregular wear, cracks, or other issues, it should be replaced immediately to avoid affecting processing quality and safety. When replacing the grinding wheel, we should ensure that the machine is powered off and follow the machine operation manual to correctly remove the old grinding wheel and thoroughly clean the installation area.

In addition to the above measures, proper storage of grinding wheels is also part of their maintenance. We should ensure that grinding wheels are stored in a dry, well-ventilated environment free of corrosive gases, avoiding moisture, heat, or contamination.

Finally, standardized operation is also an important aspect of grinding wheel maintenance and care. We should strictly follow the machine operating procedures for grinding operations, avoiding excessive grinding pressure or incorrect operating angles.