Manufacturing method of high speed steel finish roll for wire and bar mill

Abstract

The invention discloses a high speed steel finishing roll of a wire bar mill and a manufacturing method of the high speed steel finishing roll, belonging to the technical field of machining and casting. The finishing roll consists of a roll neck and a roll body comprising a working layer, a primary core and a core part; the working layer comprises the following chemical components: 1.50-2.50 percent of C, 0.40-1.00 percent of Si, 0.40-0.80 percent of Mn, less than or equal to 0.03 percent of P, less than or equal to 0.03 percent of S, 4.0-8.0 percent of Cr, 0.50-1.00 percent of Ni, 5.00-8.00 percent of Mo and 5.00-8.00 percent of V. In the casting process, the casting temperature and the rotating speed of a centrifuge can be controlled by adopting manners of high-temperature discharge from a furnace, low-temperature casting, high-speed mold filling and slow-down solidification. According to the high speed steel finishing roll and the manufacturing method of the high speed steel finishing roll, the adaptability of high speed steel materials on bar rolling can be effectively solved by reasonable design of alloy components and the processing technology, and the wear resistance and the millimeter rolling quantity of the roll are improved; in addition, the high speed steel finishing roll has favorable thermal crack resistance, and the working efficiency of a heavy and medium plate mill can be greatly improved.

Description

technical field [0001] The invention relates to a method for manufacturing rolls, belonging to the technical fields of mechanical processing and casting. Background technique [0002] In recent years, my country's construction, road and bridge industries have developed rapidly, and the consumption of wire and rod has increased significantly. At the same time, with the improvement of the quality of wire and rod in various projects, a faster and better rolling level for each wire and rod has been proposed. Require. In order to meet the needs of the market, the bar and wire rolling mill is gradually developing towards high speed and modernization, but the problem that the wear resistance of the rolls of the traditional finishing stand does not match the production efficiency of the rolling mill is also constantly highlighted. The rolling mill hopes to improve the wear resistance of the rolls High performance and anti-accident ability, minimize roll consumption and prolong roll ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to provide a method for manufacturing a finishing roll made of high-speed steel in a wire and bar mill, so as to solve the technical problems of insufficient wear resistance, poor surface quality, and easy thermal cracking of traditional rolls during use. The production of high-speed steel rolls for wire and rod provides an economical and feasible manufacturing method