Granite is also known as igneous rock. It is also called acid crystal deep diagenetic rock. It is the most widely distributed type of rock in igneous rock. It is composed of feldspar, quartz and mica, and the rock is hard and dense. Its composition is mainly silica, accounting for about 65%-75%.
The so-called igneous rock is the rock formed by the underground magma or volcanic eruption of molten lava. The content of silica in the igneous rock, the nature of the feldspar, and its content determine the properties of the stone. When the content of silica is more than 65%, it belongs to acidic rock. In this type of rock, when the basic minerals such as orthoclase, plagioclase, and quartz form a crystal, they are in a material structure and are called granite.
Lattice, cabinet countertops, and outdoor floors are suitable for granite. Among them, it is better to use dark granite. Marble is the metamorphic rock formed by the original rock in the crust through the high temperature and high pressure in the earth's crust. The internal force of the earth's crust promotes the qualitative change of all kinds of original rocks, ie the structure, structure and mineral composition of the original rock are changed. The new rock formed through qualitative change is called metamorphic rock.
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Black coating is a type of Surface Treatment used to provide a durable, aesthetic and protective finish to metal parts. It is applied to a range of substrates, including steel, aluminum, and titanium, through various processes such as painting, chemical baths or physical deposition.
Black coating provides an attractive, matte finish that reduces glare and reflections. It is commonly used in industries such as automotive, aerospace, and firearms, where aesthetics and durability are essential. The black coating can also be used for functional purposes, such as to reduce friction and wear.
One of the most common types of black coating is black oxide. Black oxide is created through a controlled chemical reaction that forms a layer of black iron oxide on the surface of the metal. This process enhances the corrosion resistance of the substrate and provides a uniform and attractive black finish. Black oxide is also used to provide a matte black finish to gun parts, as well as to increase the conductivity of electrical components.
Another type of black coating is powder coating, which involves applying a dry powder to the surface of the substrate and baking it in an oven. This process creates a durable, weather-resistant finish that is resistant to damage from UV rays and other environmental factors. Powder coating is widely used in the automotive and manufacturing industries, where it provides a long-lasting, high-gloss black finish.
Finally, black coating can also be achieved through physical vapor deposition (PVD). This involves depositing a thin layer of black material onto the substrate through a vacuum chamber. PVD black coatings are very durable, and are often used in high-precision applications such as medical instruments and aerospace components.
In conclusion, black coating is a versatile and effective way to provide a durable, aesthetic, and protective finish to metal parts. Its visual appeal, corrosion resistance, and wear resistance make it a popular choice in a variety of industries and applications. Whether applied through chemical baths or physical vapor deposition, black coating plays an important role in enhancing the performance and longevity of metal parts.
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