Products Description
Pump body casting refers to the iron liquid in the solidification process of carbon to spherical graphite precipitation cast iron. Compared with gray cast iron, the big difference of its metallurgical organization is the graphite shape change, avoid the existence of sharp graphite in gray cast iron, make the graphite on the metal matrix of the incision effect is greatly reduced, basic flake graphite caused by the stress concentration phenomenon, make the strength of the metal matrix utilization rate of 70-90%, so as to make the performance of the metal matrix to a large extent.
Ductile iron can be like steel, through heat treatment and alloying and other measures to further improve its performance. For example, the treated ductile iron can obtain very good toughness, elongation as high as 24%; Tensile strength can be as high as 1400MPa, basically close to steel. Compared with steel, ductile iron has many advantages. For example, good casting performance, relatively low cost. Due to the continuous increase in the production of ductile iron, performance continues, has now successfully partially replaced the forged steel and cast steel, become a promising metal structure materials.
