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

Abstract

A high temperature -resistant and wear -resistant ball milling iron, which is the field of casting technology, consists of the following raw materials with a percentage of quality, carbon 2.77 %, chromium 2 % to 3 %, manganese 3 % to 6 %, silicon 1.2 % to 1.5 %, and silicon, 1.2 % to 1.5 %, and silicon, 1.2 % to 1.5 %, and silicon.~ 0.1 % ~ 0.5 %, boron 0.05 % ~ 0.1 %, tungsten 0.5 % ~ 0.8 %, magnesium 0.03 % ~ 0.04 %, 0.003 % to 0.004 % aluminum, 0.6 % to 0.8 % copper, 0.3 % to 0.4 %, lowIn the impurities of 0.05 %, the balance is iron.The beneficial effect of the present invention is novel in the composition, and the production process is reasonable and clear. The invention is based on the ball and cast iron as the main component. According to the present invention, through the formation of the above composition, it can create high temperature strength and oxidation resistance at low cost and excellent delay.The ball and ink cast iron reduces the production cost of the enterprise, improves production efficiency, and the abrasion resistance of cast iron, which effectively improves the service life of cast iron.

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...

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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