How is decorative stone generally processed

（1） Sawing and cutting
Sawing is the operation of sawing natural stone waste or large artificial stone base materials into boards using a sawing machine.
The sawing equipment mainly includes frame saws (row saws), disc saws, wire rope saws, etc. When sawing hard stones such as granite or larger sized stones, frame saws are commonly used. When sawing small sized stones with medium or lower hardness, disc saws can be used.
The sawing principle of the frame saw is to pour iron sand or silica sand with water into the lower part of the saw blade, and the saw blade (flat steel strip) under certain pressure moves back and forth on the stone with the iron sand, generating friction and sawing the stone.
A circular saw is composed of a frame, a saw blade fixing frame, a lifting device, and a saw blade. The large saw blade has a diameter of 1.25-2.50m and can process stones 1.0-1.2m high. The saw blade is made of hard alloy or diamond, with the latter being more widely used. The cutting mechanism of a saw blade is that the saw teeth impact and rub against the rock, breaking down crystalline minerals into small pieces to achieve cutting.
（2） Surface processing
The surface quality of the sawn board is not high and requires surface processing. There are various forms of surface processing requirements, including rough grinding, fine grinding, polishing, flame drying, and chiseling.
The grinding process is generally divided into five steps: coarse grinding, fine grinding, semi fine grinding, fine grinding, and polishing. There are two types of grinding equipment: arm type hand-held grinding machines and bridge type automatic grinding machines. The former is usually used for small piece processing, while the latter is used for processing sheets of 1m2 or more. Abrasives are often made with silicon carbide and binders (such as resin and high alumina cement), or with 60-1000 mesh diamond sand.
Polishing is the final process of stone grinding and processing. After this process, the stone surface will have the maximum ability to reflect light and good smoothness, and the inherent pattern and color of the stone will be displayed to the maximum extent.