Nodular cast iron with high-temperature resistance and high abrasion resistance

Abstract

The invention belongs to the technical field of casting and discloses nodular cast iron with high-temperature resistance and high abrasion resistance. The nodular cast iron with high-temperature resistance and high abrasion resistance is composed of, by mass, 2.77% of carbon, 2%-3% of chrome, 3%-6% of manganese, 1.2%-1.5% of silicon, 0.1%-0.5% of vanadium, 0.05-0.1% of boron, 0.5%-0.8% of tungsten, 0.03%-0.04% of magnesium, 0.003%-0.004% of aluminum, 0.6%-0.8% of copper, 0.3%-0.4% of phosphorus, less than 0.05% of impurities, and the balance iron. The nodular cast iron with high-temperature resistance and high abrasion resistance has the beneficial effects that the constituents are novel, the manufacturing process is reasonable and clear, the nodular cast iron is adopted as a main constituent, the nodular cast iron with the high-temperature strength and excellent oxidative resistance and ductility can be manufactured with low cost by means of the composition, the production cost of enterprises is reduced, the production efficiency and the abrasion resistance of the cast iron are improved, and the service life of the cast iron is effectively prolonged.

Description

technical field [0001] The invention belongs to the technical field of casting, and relates to a spheroidal grinding cast iron, in particular to a spheroidal grinding cast iron with high temperature resistance and high wear resistance. Background technique [0002] Cast iron is a general term for alloys mainly composed of iron, carbon and silicon. Cast iron can be divided into: gray cast iron, white cast iron, malleable cast iron, nodular cast iron, vermicular cast iron and alloy cast iron. [0003] Ductile cast iron obtains spherical graphite through spheroidization and inoculation treatment, which effectively improves the mechanical properties of cast iron, especially the plasticity and toughness, so as to obtain higher strength than carbon steel. Ductile cast iron was developed in the 1950s It is a high-strength cast iron material whose comprehensive performance is close to that of steel. Ductile iron has excellent high-temperature strength and oxidation resistance. It i...

AI Technical Summary

Problems solved by technology

[0003] Ductile cast iron obtains spherical graphite through spheroidization and inoculation treatment, which effectively improves the mechanical properties of cast iron, especially the plasticity and toughness, so as to obtain higher strength than carbon steel. Ductile cast iron was developed in the 1950s It is a high-strength cast iron material whose comprehensive performance is close to that of steel. Ductile iron has excellent high-temperature strength and oxidation resistance. It is based on its excellent performance that it has been successfully used to cast some complex stress, strength, toughness, and durability. For parts with high abrasiveness requirements, nodular cast iron has rapidly developed into a cast iron material that is second only to gray cast iron and is widely used. In the field of machinery manufacturing, cast iron alloys are used to prepare parts with high wear resistance or parts with complex structures. , the use of cast iron alloys with casting technology can reduce the difficulty of processing and reduce production costs, but a defect of cast iron alloys is that in the process of use, the high temperature resistance is limited. During the process, high temperature will be generated locally through friction, which not only wears the coating of the brake disc, but also causes deformation of the coating of the brake disc, which affects the performance of the brake disc. Therefore, the brake disc must be used after a period of time. replacement, which results in an increase in the cost of