Factors Affecting Stone Polishing

2021-09-27

Generally, stone needs to be polished before it is used since the stone will be aging and contaminated after time. And polishing is a meticulous processing technology, some people will call it surface enhancement technology. In the polishing process of stones, there will be more or less factors that affect the polishing effect and quality.

The influence of the stone itself　　

Different types of stone will affect the polishing effect. Stones with different mineral compositions have different polishing process characteristics. The stone contains a certain amount of clay minerals, which will also affect the gloss of the stone. It is difficult for the polished stone to achieve a gloss above 85.

The Influence of polishing process

1. Polishing agent

Theoretically, different minerals should use different polishing agents. Although the polishing agent is a special polishing material, the difference between it and the abrasive material is mainly in the processing mechanism. In principle, some low-hardness micropowder materials can also be used as polishing agents. But generally, high-hardness polishing agents are better than low-hardness ones and have a wide range of applications. Diamond polishing powder can achieve satisfactory polishing results for most stones.　　

2. Grinding disc

The flat stone surface is a form of expression of stone surface grinding. Discs made of metal bond diamond are often used as grinding discs. The polished surface of the soft bond grinding discs is easy to yield into a concave surface when the stone is pressed, which is suitable for curved surface polishing. The medium bond grinding discs have good abrasion resistance, good adsorption and certain elasticity, so it has a good polishing effect on flat stone.　　

3. Grinding head

The feed rate of the grinding head has a great influence on the polishing effect. Studies have shown that with the increase of the feed rate of the grinding head, the surface gloss of the stone will decrease, but if the feed rate is too low, the wear of the head will be accelerated and the production efficiency will be reduced. In addition, the operation mode of the grinding head should be coordinated with the operation mode of the coarse and fine grinding heads.

4. Polishing process parameters

The process parameters include the concentration and supply of the polishing agent, the pressure and line speed during polishing, etc. When the supply amount of polishing agent is at a certain value, the polishing speed is high, and then if the supply amount continues to increase, the polishing speed will decrease instead. Appropriately increasing the pressure during polishing can increase the polishing speed, but if the pressure is too high, the grinding effect will be strengthened, which is not conducive to the formation of a glossy surface. The polishing speed depends on the rotation speed of the grinding disc, but if the linear speed is too high, the polishing agent will be thrown out, causing waste.

The diamond grinding disc produced by DTS Diamond Tools has the characteristics of sharp grinding, good heat resistance and pressure resistance. And without changing the color of the stone itself, it has the advantages of fast glazing, high brightness and not easy to fade. If you are interested in our products, please call or leave a message for consultation.