The definition of ferroalloy classifies utility

Ferroalloy futures is about to hang out his shingle in Zheng Shang trade. Know ferroalloy market to make the market overall, our newspaper will publish article of series of ferroalloy merchandise on hand in succession since now, introduce the case of the respect such as the production of ferroalloy, consumption, commerce, in order to provide dinner for reader.

The definition of ferroalloy

Ferroalloy is by one plant or the alloy that the metal of two kinds of above or metalloid element and iron element confluence are together. For example, ferrosilicon is the silicon such as the Fe2Si that silicon and iron form, Fe5Si3, FeSi, FeSi2 changes thing, they are the main constituent of ferrosilicon, the silicon in ferrosilicon basically exists with FeSi and FeSi2 form, especially FeSi is relatively stable. The melting point of different composition ferrosilicon is not same also, for example 45% ferrosilicon melting point is 1260 ℃ , 75% ferrosilicon are 1340 ℃ . Ferromanganese is the alloy of manganese and iron, also contain a few other elements such as carbon, silicon, phosphor among them, those who depend on its carbon content is different, ferromanganese cent is tall carbon ferromanganese, medium carbolic ferromanganese and low carbon ferromanganese. The manganese ferroalloy that contains enough silicon amount calls silicon manganese alloy.

Ferroalloy is not the metallic data that can use directly, basically be produced as iron and steel however and cast the intermediate raw material of the deoxidizer of course of study, reducer and alloy additive.

The classification of ferroalloy

As the development of modern science and technology, each industries are right rolled steel (2940, 3, the demand of the breed of 0.10%) , function is higher and higher, also raised taller requirement to ferroalloy thereby. Ferroalloy breed is various, classified method is much also, press the following method to classify commonly:

(1) presses ferroalloy in advocate elemental classification, can divide for: The series ferroalloy such as silicon, manganese, chromic, vanadium, titanium, tungsten, molybdenum.

(2) presses classification of content of the carbon in ferroalloy, can divide for: Tall carbon, medium carbon, low carbon, small carbon, exceed the breed such as small carbon.

(3) presses production methods classification, can divide for: The law outside blast furnace ferroalloy, electric stove ferroalloy, furnace (the metal heats up a law) solid state of ferroalloy, vacuum is reductive law ferroalloy, converter ferroalloy, electrolysis ferroalloy. In addition, still oxide is pressed piece wait for special ferroalloy with calorific ferroalloy.

(4) is pressed multivariate two kinds when ferroalloy place contains or classification of alloying element of two kinds of above, main breed has calcium of aluminium alloy of manganese of calcic alloy of silicon aluminium alloy, silicon, silicon, silicon alloy of barium of calcium of aluminium alloy, silicon, silicon is aluminous baric calcium alloy.

In silicon, manganese, chromium in series of 3 big ferroalloy, manganese of ferrosilicon, silicon, ferrochrome is the variety with the biggest crop.

The utility of ferroalloy

Ferroalloy is iron and steel industry and machinery cast one of important raw material with essential industry. As the abidance of our country iron and steel industry, rapid development, the breed of steel expands to rise with quality ceaselessly, raised taller requirement to ferroalloy product.

(1) uses as deoxidizer. All sorts of elements in molten steel are right the combinative strength of oxygen, namely deoxidization ability, from be as follows to strong order infirmly: Chromic, manganese, carbon, silicon, vanadium, titanium, boracic, aluminous, zirconium, calcic. General steel-making to oxigenate is commonly used is the ferroalloy that comprises by silicon, manganese, aluminous, calcium.

(2) uses as alloying constituent. The element that the chemical part that is used at adjusting steel makes steel alloy is changed or alloy make alloying constituent, commonly used alloying element has silicon, manganese, chromic, molybdenum, vanadium, titanium, tungsten, cobaltic, boracic, niobium to wait.

(3) uses as cast agent of nucleus be pregnant with. To change caky condition, be in normally pouring before join certain ferroalloy to serve as nucleus, form grain center, make formation black lead becomes petty and dispersive, grain is refined, improve the performance of cast thereby.

(4) uses as reducer. Ferrosilicon can regard production as the reducer of the ferroalloy such as molybdenum iron, vanadium iron, silicon chromic alloy and silicon manganese alloy can serve as respectively low carbon ferrochrome is mixed in fine in the reducer of low carbon ferromanganese.

(The utility of 5) other side. In coloured metallurgy and chemical industry, ferroalloy also by more and more use widely.

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