How to dressing cast iron lapping disc?

What is cast iron lapping disc?

Cast iron grinding disc is a kind of grinding tool used for precision grinding and polishing. It is usually made of high-strength cast iron material with good hardness, wear resistance and stability. Cast iron grinding disc is widely used in mechanical processing, optical device manufacturing, semiconductor industry, metal material processing and other fields, mainly used for precision plane grinding, polishing or finishing of workpiece surface.

Features of cast iron grinding disc

• Material characteristics: Cast iron grinding disc is made of high-quality gray cast iron or ductile iron, with high hardness and good wear resistance, which enables it to maintain surface flatness and stability for a long time.
• Flatness and precision: The cast iron grinding disc is precisely machined, and its surface has extremely high flatness and finish, which is suitable for the processing and grinding of precision parts.
• Good thermal conductivity: Cast iron material has good thermal conductivity, which can quickly dissipate heat during the grinding process, reduce the temperature rise of the workpiece and the grinding disc, and avoid thermal deformation.
• Wide applicability: Cast iron grinding discs can be used for grinding and polishing of various materials, including metals, ceramics, glass and plastics, etc., and are particularly suitable for surface treatment of workpieces that require high flatness and high finish.

Applications of cast iron lapping disc

Cast iron grinding discs are suitable for polishing and grinding of stainless steel, copper, aluminum alloy, hardware, mobile phones, auto parts, optical glass, crystals, silicon wafers, quartz wafers, sapphire glass, valve plates, valve plates, friction plates, rigid sealing rings, cylinder piston rings, oil pump blades, cylinder piston rings, air pressure, hydraulic pressure, water pressure and other seals, zirconia ceramics, zirconia ceramics, plastics, molds, high-speed steel, and other metals or non-metals, and can be used together with surface grinders.

Maintenance of cast iron grinding discs

In order to maintain the good performance of cast iron grinding discs, they usually need to be maintained and trimmed regularly. Common maintenance measures include regularly cleaning surface dirt and residues, repairing wear or deformation caused by use, and ensuring that the disc surface always remains flat.

Dressing solutions for cast iron polishing plate

1. Diamond dresser dressing

Using a diamond dresser is one of the most common and effective dressing methods. The diamond dresser has extremely high hardness and can easily remove the wear layer and uneven areas on the surface of the cast iron grinding disc. Operation method: Fix the diamond dresser on the machine tool and move slowly according to the preset trajectory so that the diamond dresser contacts the surface of the grinding disc and cuts. Through multiple slight dressings, the flatness and precision of the grinding disc are gradually restored.

Advantages: Good dressing effect, suitable for cast iron grinding discs of various specifications, and can effectively remove the hardened layer or dirt on the disc surface.

2. Grinding wheel dressing

Grinding wheel dressing is a traditional dressing method, especially suitable for lighter wear or blockage on the surface of cast iron grinding discs. Operation method: Use a special grinding wheel to grind the surface of the grinding disc. Usually, appropriate pressure is applied on the disc surface to make the grinding wheel rub against the disc surface to remove surface unevenness or blockage.

Advantages: Simple operation and suitable for quick dressing.

3. Turning dressing

For severely worn or deformed cast iron grinding discs, lathes can be used for turning dressing.

Operation method: Fix the cast iron grinding disc on the lathe, use the turning tool to cut the disc surface, remove the damaged layer on the surface, and restore its flatness. Usually used to repair severely damaged or deformed grinding discs. Advantages: A large range of dressing can be performed, suitable for deep dressing.

4. Sandblasting dressing

Sandblasting dressing is a surface treatment method that cleans the dirt and oxide layer on the surface of the cast iron grinding disc by spraying high-pressure abrasives. Operation method: Place the grinding disc in a sandblasting machine and use high-speed abrasives to treat the surface of the grinding disc to remove surface impurities and blockages and restore its surface roughness.

Advantages: It can effectively remove surface impurities and slight wear.

5. Manual dressing

For small or slightly worn grinding discs, manual dressing is a flexible dressing method.

Operation method: Use manual tools such as scrapers and files to perform local dressing on the grinding disc. This method is suitable for small-scale wear and tear or slight unevenness.

Advantages: Suitable for delicate repairs and high flexibility.