Knowledge

What are the main factors affecting stone processing?



The machinability of stone refers to the difficulty of sawing, cutting, grinding and polishing. Saw, cut the same, grinding, throwing, although different, but very similar, so the general machinability of the stone usually refers to the sawability and grindability. But what are the factors that affect stone processing? Let's take a look!



First, the hardness



In general, the greater the hardness of the stone, the more difficult the processing, the higher the required molding technology, and the greater the wear on the processing tool. When the hardness of the stone is enhanced, the anti-abrasion performance is enhanced, so the resistance of the cutting will increase, and the requirements for the processing tool will be higher.



Second, the composition of the stone



The composition of stone includes two kinds of minerals and chemicals, different mineral components and chemical components, and the processability is also different. For example, marble, the main mineral composition is calcite, dolomite, its Mohs hardness is 3 and 3.5-4, respectively, lower hardness than granite, easy to process. The main minerals of granite are quartz, feldspar, and plagioclase, which have a Mohs hardness of 6.5-7. Its processability depends to a large extent on the content of quartz and feldspar, the higher the content, the more difficult it is to process. In chemical composition, such as higher SiO2 content, the more difficult the processing.



Third, the internal structure of the rock



Generally speaking, the structural grain of stone is more easy to process than uneven; the fine grain is higher than the flake polishing quality; the dense stone has higher gloss than the loose stone; the mineral crystal is good, and the orientation is arranged, the optical axis Consistent orientation will greatly improve the gloss after polishing.