Efficient near-net forming method for single-port type oblique rolling ball-milled steel sections

Abstract

The invention relates to an efficient near-net forming method for single-port type oblique rolling ball-milled steel sections. By means of oblique rolling dies, bars to be rolled which are heated to the rolling temperature are rolled so as to achieve radial compression and axial extension to form ball-milled steel sections which are symmetrical back and forth; the front and back surfaces of the ball-milled steel sections are curved surfaces and the side surface is a cylindrical surface. The shape and size are good after rolling and forming, which totally meet the use requirements; the utilization rate of material reaches 98%. Finally, the excess heat after rolling is utilized to obtain ball-milled steel sections having high surface hardness, toughness and wear resistance, which effectivelyincreases production efficiency and material utilization rate.

Description

technical field [0001] The present invention designs the technical field of metal plastic forming, and in particular relates to a high-efficiency near-net forming method for a single-pass cross-rolled ball-milled steel section. Background technique [0002] The ball mill steel section is the grinding body used in the ball mill in the milling industry, mainly used for secondary grinding. The main movement forms of the ball mill steel section in the ball mill are falling movement, throwing movement and centrifugal movement. During the movement, it will be subjected to repeated impact, material extrusion and corrosion wear. The main failure forms are: cutting and chiseling wear, Brittle spalling, fatigue wear, crushing, etc. Therefore, the performance requirements for the steel section include: high surface hardness, high volume hardness, good toughness, corrosion resistance, and wear resistance. [0003] The commonly used production methods of ball milled steel section in Ch...

AI Technical Summary

Problems solved by technology

[0003] The commonly used production methods of ball milled steel section in China include casting and forging, among which casting includes ordinary casting and special casting. Casting ball milled steel section has high energy consumption, low efficiency, serious environmental pollution, poor product structure and high labor intensity, and forged steel section The organizational performance is better, but it is necessary to increase the output by increasing the number of forging tables, the investment in equipment is large, and the number of laborers increases

Images