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Nodular cast iron is the result of a chemical reaction between Magnesium and the liquid taken from the furnace in a treatment ladle.
Using a motorized ladle, the cylinders are cast into shells made of cast iron or steel through static centrifugation to achieve a higher degree of surface hardness than what can be obtained in the core.
Cooling times are directly proportional to the weight of the cast product and can vary from one to three days.
Once cooling is complete, the cylinders are removed from their respective molds and left to cool in the open air for several days. Then, they are inspected, marked, and approved by the Quality Manager.
They are now ready for storage or processing in the mechanical workshop, as the peculiarity of nodular cast iron is that it can be used even without further heat treatments.
The mechanical processing process begins with a preliminary machining of the slab to check its surface quality. Products that do not pass this test are immediately discarded.
Numerically controlled machines quickly work on the cylinders according to the executive drawings provided by the customer.
The rings that need to be fitted are sent to the fitting department, where they are mounted on steel shafts sold by us or provided by the customer.
All processed products are inspected and tested (dimensional checks, hardness tests, and ultrasonic testing are performed), then sent to the shipping department, where they are packed and stored ready for shipment.