Addition control method of an alloy of iron copper content ball

The present invention is an alloy of copper addition control method of the amount of ductile iron, which is the raw material for the scrap melting ductile iron, hot metal melt sampling instant, by spectrometry in liquid iron existing alloying elements copper, manganese, chromium, molybdenum, nickel , vanadium, tin content, and the mathematical model according to the control copper equivalent, calculated the amount of copper to be added to the liquid iron is added so that the copper in liquid iron equivalent 0.7% -1.2%. Calculation of the present invention is simple, fast, accurate, and to avoid over-alloyed iron, alloyed not only effectively controlled, to ensure the good mechanical properties of the casting, but also due to the addition of a small amount of copper, so that copper precipitated pearlite smaller particles , and it was dispersed, and therefore higher mechanical properties.