Bainite wear-resistant ductile cast iron and processing technology thereof

Abstract

The invention discloses bainite wear-resistant ductile cast iron and a processing technology thereof, and relates to the technical field of processing and manufacturing of ductile cast iron. The bainite wear-resistant ductile cast iron is prepared from chemical components including, by weight, 3.20%-3.45% of C, 2.0%-2.4% of Si, 0.75%-1.25% of Mn, 0.5%-0.75% of Mo, 1.2%-2.5% of Ni, 0.4%-0.6% of Cu,0.2%-0.5% of Cr, 0.01%-0.1% of Ti, 0-0.02% of P, 0-0.01% of S, 0.1%-0.5% of Nb and the balance Fe and inevitable impurities. According to the bainite wear-resistant ductile cast iron and the processing technology thereof, the advantages of the materials are exploited, cast products have the good wear resistance, the good impact toughness and the relatively good comprehensive mechanical properties, the method is convenient to operate, the technology is easy to control, and the products are stable in quality.

Description

technical field [0001] The invention belongs to the technical field of nodular cast iron processing and manufacturing, and in particular relates to a bainite anti-wear nodular cast iron processing technology and a bainite anti-wear nodular cast iron processing technology. Background technique [0002] Bainite ductile iron is widely used in the production of structural parts such as gears, crankshafts and wear-resistant parts such as grinding balls, liners, hammers, etc. due to its good comprehensive mechanical properties, casting properties, processing properties and economical efficiency. Bainite ductile iron is produced by adding heavy alloying elements Ni, Mo, and Cu, and adopting a nitrate bath isothermal quenching process. This production method requires a large one-time investment in production equipment, high energy consumption, long cycle time, and serious nitrite pollution. Therefore, there is an urgent need to invent an as-cast alloy bainitic ductile iron with high...

AI Technical Summary

Problems solved by technology

Bainite ductile iron is produced by adding heavy alloying elements Ni, Mo, and Cu, and adopting a nitrate bath isothermal quenching process. This production method requires a large one-time investment in production equipment, high energy consumption, long cycle time, and serious nitrite pollution. Therefore, there is an urgent need to invent an as-cast alloy bainitic ductile iron with high hardness, which can increase the production cycle, simplify the production process, and reduce costs while maintaining high compressive strength and wear resistance, or an alloy that simplifies the heat treatment process. Bainite Ductile Iron Material