The processing of bluestone plates is mainly sawing, cutting, grinding and throwing. The machinability of stone refers to the ease of sawing, cutting, grinding and polishing. Sawing and cutting are the same, grinding and throwing are different, but they are very similar. Therefore, the machinability of general stone usually refers to sawability and grindability. The main factors affecting the machinability of stone are:
(1) Hardness
In general, the harder the stone is, the more difficult it is to process and the greater the wear on tools.
(2) Mineral composition and chemical composition
The material composition of stone material includes mineral composition and chemical composition. Different mineral composition and chemical composition have different processability. For example, the rock-forming minerals of marble are mainly calcite and dolomite, whose Mohs hardness is 3 and 3.5-4 respectively, which is lower than that of granite and easy to process. The main rock-forming minerals of granite are quartz, orthoclase, plagioclase, and their Mohs hardness is 6.5-7. Its machinability largely depends on the content of quartz and feldspar, the higher the content, the more difficult it is to process. In terms of chemical composition, the higher the content of SiO2, the more difficult it is to process.
(3) The structure of rock
Generally speaking, stone with uniform particles is easier to process than uneven stone, fine-grained stone has higher polishing quality than flake, and dense stone has higher gloss than loose stone. The mineral crystallinity is good, and the directional arrangement and the same optical axis direction will greatly improve the gloss after polishing. The cleavage, grain boundaries and initial cracks of the rock are also important factors for machinability.
In addition, the selected machining tools and process parameters are an influencing factor that must be considered.
There are two main types of decorative stone used for building decoration: marble and granite. The main process of processing the veneer stone blocks into building decorative plates is sawing, grinding and polishing, cutting the finished plates, trimming, chamfering and grooving. The sawing process is the key, which determines the output and quality of the product . In the sawing process, there are many diamond saw blades. According to domestic and foreign statistical data, about 50% of the industrial diamonds in the world are currently used to manufacture stone processing tools, mainly stone processing saw blades.
Established in 1993, Sang Diamond Tools Co., Ltd. is an innovative company specializing in research and manufacture of various diamond tools, such as diamond segments, diamond blade, diamond wire saws, diamond core bits, diamond polishing pads, diamond cup wheels, and diamond profiling wheels.Our products are widely used for cutting and grinding granites, marbles, concretes, asphalts, tiles, slabs, countertops, pavement, bricks, curb, steps, palisades, wall stones, pillars, memorials, and sculptures.
For more details about diamond saw blade or polishing tool,contact us
WWW.SANGTOOLS.COM
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