Method for producing QT500-10 at low cost and application of QT500-10

The invention relates to a production process of nodular cast iron, in particular to a method for producing QT500-10 at low cost and application of the QT500-10, furnace charge adopted in the method comprises the following substances in percentage by weight: 9%-11% of pig iron, 29%-31% of waste steel cuttings, 49%-51% of returned materials of the material, 4%-6% of gray iron returned materials, 4%-6% of gray iron scraps, 1.0%-1.2% of a carburant, 0.010%-0.015% of tin, 0.25%-0.30% of ferromanganese and 0.25%-0.30% of silicon iron; compared with the prior art, the production cost is greatly reduced, the gray iron returned material and the gray iron scrap are effectively utilized, the inventory is digested, the benefit is further improved, in addition, the low-carbon and low-manganese waste steel scraps are used, and compared with briquetting waste steel in the prior art, the ductility, namely the ductility, of the waste steel scraps is good. Therefore, the mechanical property elongation of the product prepared