It is considered that using pig iron in large fraction would increase shrinkage tendency of the molten iron and decrease properties of castings;selection of carburizing agent is the key of melting with full steel scrap charge;it is necessary,in order to produce hi-strength gray iron castings with relatively high carbon and silicon content,to take .

A carburizing agent, a kind of semi graphite, for steel making is developed.

This paper presents the process of getting the qualified molten iron through melting scrap,carburant and moderate cast pig iron, which offers a new way for producing ductile iron.

The main factors,which determines the effectiveness of carburant, are the melting rate and absorptivity when the cr.

To resolve the problems above,we appling synthetic casting iron in the cylinder s producing,that is just to apply scrap steel and carburant in the producing.

The mechanism of solution of recarbonizer into cast iron melt is discussed.

Determination of sulphur in recarburizer by high frequency combustion infrared absorption method

Experiment on Calcined Denitriding Process of Recarburizer;