The carbon in steel-making cast iron basically exists with the appearance of cementite

The carbon in steel-making cast iron basically exists with the appearance of cementite

The carbon in steel-making cast iron basically exists with the appearance of cementite, its section shows white, general renown white iron. Cast iron function is solid and this kind is fragile, use the material that makes steel-making commonly.

Forging the carbon in cast iron with piece the black lead appearance of shape exists, its fracture surface is gray, general renown grey iron. Because black lead is qualitative soft, have smooth effect, because this forgings,cast iron is had crackajack cutting, wear-resisting and forging function. But its fight an intensity to be no good, reason cannot forge make friends, can use at making all sorts of cast only, if forging all sorts of machine tool beds, iron pipe.

The carbon in nodular cast iron exists with the appearance of globose black lead, grey iron of outclass of its machinery function and be close to Yu Gang, it is had forging outstandingly, cutting treatment and wear-resisting function, have sure flexibility, use extensively at making crankshaft, gear, piston wait high-grade cast and a variety of mechanical spare partses. Still have in addition contain silicon, manganese, nickel or other element to measure particularly tall cast iron, call alloy cast iron, wait like ferrosilicon, ferromanganese, commonly used the material that makes steel-making. Certain alloy cast iron attends when steel-making, can improve the function of steel.

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