Production method for non-quenched-and-tempered high-strength wear-resisting steel used for HB450 level caterpillar band plate

Abstract

The invention discloses a production method for non-quenched-and-tempered high-strength wear-resisting steel used for an HB450 level caterpillar band plate. The high-strength wear-resisting steel comprises the following chemical components including, by mass, 0.22%-0.27% of C, smaller than or equal to 0.30% of Si, 3.0%-5.0% of Mn, smaller than or equal to 0.012% of P, smaller than or equal to 0.002% of S, 0.10%-0.50% of Mo, 0.10%-0.15% of Ti, 0.0010%-0.0040% of B, smaller than or equal to 0.0040% of N and the balance Fe and inevitable impurities. By means of the method, the above high-strengthwear-resisting steel is adopted as the implementation object, production implementation of steel plates is conducted through technology processes of BOF converter smelting, LF external refining, RH treatment, slab continuous casting and controlled rolling, and compared with a traditional high-strength wear-resisting steel production technology, the production method has the beneficial effects that the production technology processes are simple, the production period is short, the cost is low, and the steel plate performance is stable and good; and good economic efficiency and technological innovation are achieved.

Description

technical field [0001] The invention relates to the technical field of iron and steel materials, in particular to a production method of non-quenched and tempered high-strength wear-resistant steel for HB450 track shoes. Background technique [0002] Wear-resistant steel is a kind of wear-resistant material widely used in various wear conditions such as metallurgy, mining, building materials, electric power, railways and military affairs. It is currently one of the most important steel types in my country's construction machinery industry. [0003] In recent years, with the development of my country's construction machinery industry, the demand for tracked heavy construction vehicles such as bulldozers and excavators has gradually increased. This type of engineering vehicle uses crawlers as the body load, which can ensure the stability of the vehicle chassis and improve the passability of the vehicle under complex working conditions. As a track shoe that is in direct contac...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a non-quenched and tempered high-strength wear-resistant steel for HB450 track shoes in view of the problems of long production process and poor efficiency in the production process of the existing high-strength wear-resistant steel for HB450 track shoes production method

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