Ductile iron well cap has been widely used because of its own characteristics: high strength, good toughness, wear resistance, acid and alkali resistance, aging resistance, not easy to deform and so on. Let's take a look at the manufacturing method of Shandong ductile iron well cover.
A. Measure the temperature of tapping once before nodulizing each ladle of molten iron. The control range is 1400-1500 C.
B. After the spheroidization of each ladle of molten iron, the temperature of molten iron is measured once, and the control range is above 1360 C.
C. The five elements of 1-2 samples of molten iron are tested daily to control the material quality of castings and the stability of furnace charge recycling. After the mechanical properties of test rods are qualified, the workshop is notified to clean up. If the package is found to be unqualified, it shall be scrapped one by one according to the sign number.
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