Wear-resistant round rod for agricultural machinery and production method of wear-resistant round rod

Abstract

The invention discloses a wear-resistant round bar for agricultural machinery and a production method thereof. The wear-resistant round bar comprises the following chemical components in percentage by mass: 0.15 to 0.020 percent of C, 0.80 to 1.10 percent of Mn, 0.20 to 0.40 percent of Si, less than or equal to 0.030 percent of S, less than or equal to 0.030 percent of P, 0.020 to 0.050 percent of Al, 0.50 to 0.80 percent of Cr, 0.20 to 0.40 percent of Cu, 0.070 to 0.110 percent of Ni and the balance of Fe and inevitable impurities. The production method comprises the steps of converter smelting, furnace back argon blowing, square billet continuous casting, hot rolling and cooling bed cooling and bundling. According to the crystallizer, electric stirring and final stirring are adopted, center shrinkage cavities and center segregation of a continuous casting blank are eliminated, segregation of elements on the surface of the casting blank is eliminated, a round rod product with the specification of phi 18-25 mm is produced through the heating-free direct rolling technology, and high-quality wear-resisting round rods are produced at low cost.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a wear-resistant round bar for agricultural machinery and a production method thereof. Background technique [0002] Agricultural machinery is a general term for various mechanical equipment used in agricultural production. Agricultural machinery is mainly composed of traction power machinery and operation platform machinery. The operation platform machinery mainly includes: tillage machinery, plant protection machinery, irrigation and drainage machinery, planting and fertilizing machinery, harvesting machinery and other types of machinery for professional purposes. Agricultural machinery needs to be in frequent contact with land, gravel, plants, etc., so the contact parts are required to have good wear resistance, acid and alkali resistance and fatigue resistance. According to different uses, agricultural machinery workbenches need to be formed and welded into dif...

AI Technical Summary

Problems solved by technology

[0003] Agricultural machinery manufacturing enterprises generally use Q235 and Q355 ordinary materials to make agricultural machinery workbenches. The materials of Q235 and Q355 are mainly medium carbon materials, which rely on C and Mn elements to improve material performance. The operating environment of machinery is changeable, eroded by dew, plant juice, and worn by sand and soil, so the parts of agricultural machinery are seriously worn out, and frequent repairs and replacements are required, which affects the normal operation of agricultural machinery

Images