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Introduction to the Uses and Application Fields of Chromium
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Due to its excellent properties such as hardness, brittleness, and corrosion resistance, chromium is widely used in fields such as metallurgy, chemical industry, cast iron, refractory materials, and high-precision technology. The specific application proportions are shown in the following figure:


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1, ferrochrome in the steelmaking process has to increase the antioxidant steel: in the steelmaking process into the ferrochrome can increase the antioxidant steel, ferrochrome in the chromium can protect the steel, so that the oxidation rate slows down to increase the antioxidant steel, with the advantages of enhancing the service life of the steel;


2, put the proportion of ferrochrome in steel water has to enhance the corrosion resistance of steel: in the process of steelmaking according to the content of elements in steel water in proportion to a certain amount of ferrochrome can enhance the corrosion resistance of steel, ferrochrome in the chromium can be attached to the surface of the steel to provide a layer of insulation and thus play a corrosion-resistant ability of the advantages.


3, ferrochrome has to enhance the hardness of steel and abrasion resistance: now the steelmaking process are generally put into the ferrochrome, the main reason is that ferrochrome can enhance the hardness of steel and abrasion resistance, ferrochrome chromium in the oxygen because of the element is not easy to combine, so you can enhance the steel oxidation resistance, in addition to ferrochrome can also be purified of impurities in steel to enhance the hardness of steel.

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Due to the high melting point of chromite ore, which ranges from 1900°C to 2050°C, it can maintain its volume at high temperatures and does not react with any slag. Therefore, it can be used as a refractory material, serving as the lining of steel-making furnaces and various metal smelting furnaces. Thus, in the field of refractory materials, chromite ore is used to manufacture chromium bricks, chromemagnesite bricks, and other special refractory materials.

In addition, chromium is also applied in cast iron. For instance, cast iron in the chromium state has the characteristics of high strength, high elongation, high impact value, and low hardness.



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