In the processing of special-shaped stone, diamond grinding discs are mainly used to grind and polish the stone. The special-shaped stone processed by the diamond soft grinding plate has a high mirror gloss, which gives a good visual effect and improves the added value of the stone product. Hand tools must be used in conjunction with processing, and the processing process is simple. So how to process special-shaped stones with diamond grinding discs?

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Prepare necessary tools and materials, diamond abrasive discs and hand tools. For better processing and subsequent polishing, please select the diameter and particle size suitable for the stone. The hand tool can be selected between an electric polisher and a pneumatic grinder. Use a pneumatic grinder.

Selected parameters:

When processing special-shaped stones with diamond grinding discs, the machine speed, particle size matching, water injection volume, etc. are selected as the process parameters to determine the processing technology.

Machine speed: Under the condition of ensuring the power of hand tools, the work efficiency is proportional to the machine speed. Usually the working speed range is 2000-7000r.p.m. When dealing with complex shapes, the operation is difficult, and the working speed must be controlled at a low level. When the working speed exceeds 8500r.p.m, the service life of the buckle on the back of the grinding disc will be affected.

Particle size matching: When using diamond grinding discs to process special-shaped stones, the accuracy of the initial particle size will often directly affect the processing effect.

Manual modeling: After the modeling is completed, some hand tools are often used for rough modeling, and then processed with soft abrasive pads. The starting number for small and heterogeneous matching can be 100#, and the starting number for large heterogeneous should be 60# for shaping, and then 100# for connecting.

Machine modeling: The shapes produced by this method are relatively standardized. When choosing soft polishing pads, the general principle is that the starting number is slightly lower (or equivalent) than the number selected for modeling. The user can skip a number when selecting the particle size, otherwise the grinding disc consumes a lot and the effect is poor.

Water injection rate: The use of soft diamond abrasive pads is mainly wet processing. The water injection method is in the middle hole. When the water injection volume is large, it is helpful to reduce the consumption of the grinding plate; sometimes, in order to improve the work efficiency, the water volume is reduced or even no water is added. Please note that this method should be used with caution for light colored stones.

checking work:

Before the formal processing starts, inspection work must be carried out. Mainly check whether the compressed air pressure is within the range of 0.5-0.7r.p.m, whether the connecting air path is unblocked, and whether the water path is normal. Whether the pneumatic grinder is connected as required, and the water-grinding disc is accurately overlapped with the rubber joint of the buckle and fixed on the hand tool.

Grinding and polishing:

Connect pneumatic grinder for grinding and polishing as required. The grinding process can be divided into rough grinding, fine grinding and fine grinding. Select the starting number 60# for finalization, and then distinguish the particle size number according to the color of the back buckle. At the same time of processing, choose the small surface of the above two kinds of stone to be polished to determine the gloss. Polishing and grinding methods are basically the same, the difference is that the abrasive grain size used for polishing is much finer than grinding, and the polishing speed is also higher.

Inspection stone:

After the diamond water-grinding disc is polished and polished, the special-shaped stone is inspected. Mainly check the surface defects and surface gloss of special-shaped stones. If any defects are found, they should be dealt with immediately. The surface gloss can be checked through the measurement results of the equipment to see if the gloss is within the required range, diamond abrasive cloth, 

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