High-carbon low-carbon FERROALLOY

FERROCHROME
Ferrochrome grades and uses of
     Ferrochrome is divided into different carbon-carbon ferrochrome (carbon content of 4 ~ 8%), medium carbon ferrochrome (carbon content of 0.5 ~ 4%), low-carbon ferrochrome (0.15 ~ 0.50% carbon content), Micro-carbon ferrochrome (carbon content 0.06%), ultrafine carbon ferrochromium (carbon content of less than 0.03%), chromium, chromium alloy, such as silicon. There are commonly used silicon-chromium alloy, iron, such as CrN. Ferrochrome alloy steel mainly used as additives in steel-making past to join the latter part of the refinery. As a result of improvements in steel-making process, and now with AOD (see secondary refining), such as stainless steel, such as steel production, the use of carbon ferrochrome (mainly chromium iron loading level) installed furnace, and thus only a low increase in the latter, Micro-adjustment element of carbon ferrochromium, ferrochromium production now focus on refining carbon ferrochrome.
     Low carbon ferrochrome mainly used in the production of stainless steel, acid-resistant steel and heat-resistant steel. Silicon smelting methods of heat and electricity and heat against the law.
     In low-carbon ferrochrome for the production of low carbon structural steel, chromium steel, alloy structural steel.
     High-carbon ferrochrome (including ferrochrome reproduce) the main purposes are:
         (1) the ball higher for carbon steel, tool steel and high-speed steel alloy agent to improve the hardenability of steel to increase wear resistance and hardness of steel;
         (2) of the additives used for cast iron, cast iron to improve the wear resistance and increase the hardness, while cast iron has excellent heat resistance;
         (3) non-residue method for the production of silicon-chromium alloy and the low, low carbon chromium-containing raw materials of iron;
         (4) for the electrolytic production of chromium metal materials;
         (5) Oxygen used as the raw material of stainless steel smelting method.

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