Another method is the ductile iron plant on the surface coated with some epoxy coal tar pitch, it is suitable for gas pipelines, sewage pipes, there are Good adhesion.
Ductile Iron temperature control in 1570 ℃ ~ 1610 ℃ into the spheroidization, the second birth, wet sand casting or coated sand shell type casting.
On the one hand, the temperature of the nodular cast iron is reduced on the one hand, and on the other hand, magnesium and rare earth elements form slag in the ladle and pouring system.
Wear resistance of high chromium cast iron is the best.It is most widely used, such as small and medium sized ball mill lining plate, and a small, hammer crusher and hammer mill, etc..
The melting temperature of high chromium cast iron is higher than that of general cast iron, about 1200 degrees Celsius, the temperature is about 1500 degrees.
Anticorrosion treatment of nodular cast iron pipe.
Ductile iron castings have been rapidly developed as second only to gray cast iron, which is widely used in cast iron materials.
Compared with gray cast iron, nodular cast iron has an absolute advantage in strength. The tensile strength of nodular cast iron is 60K, while the tensile strength of gray cast iron is only 31k.
Select the lost foam casting sand, according to the casting material, use and process requirements to choose.