Method for manufacturing high-quality high-strength cold forging steel with uniform texture performance

Abstract

The invention discloses a method for manufacturing high-quality high-strength cold forging steel with uniform texture performance. The cold forging steel comprises the following chemical ingredients in percentage by weight: 0.30 to 0.50 percent of C, 0.45 to 0.90 percent of Mn, 0.05 to 0.40 percent of Si, 0.70 to 1.50 percent of Cr, 0.03 to 0.50 percent of Mo, 0.015 to 0.040 percent of Alt and the balance of Fe and inevitable impurities. According to a rolling process, the tapping temperature of a heated steel blank is 910 to 1,160 DEG C, the finish rolling temperature is 800 to 900 DEG C, and the spinning temperature is 780 to 870 DEG C; and according to a stelmor air-cooled wire control cold process, the steel blank is cooled to be at the temperature of between 520 and 720 DEG C at a cooling speed of more than 5 DEG C/second to enter a cover, and the cooling speed in the cover is 0.2 to 0.8 DEG C/second. According to the method, a rolling and cooling control process is set and optimized reasonably to obtain an ideal texture, the qualified rate of cold upsetting is 100 percent, the problem of the cracking of the cold upsetting of the cold forging steel is solved effectively, the yield of standard components serving as finished products is improved, and the economic benefit is improved substantially.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for better quality and consistency during production of high strength low alloyed steels (HSS). By controlling the rolls used during this processing, it can ensure that all materials have been properly formed before they start react chemically or mechanically into their final product. Additionally, the HSS produced has an evenly distributed microstructure resulting from uniformly shaped wires made up mostly of iron atoms without any defects such as cracks caused when rolled at room temperature. Overall, these technical results improve the properties and efficiency of producing high-performance alloys while reducing costs associated therewith.

Problems solved by technology

Technics described in this patents discuss how different types of material used to make wires from iron or aluminum may affect its properties when processed under certain conditions that cause changes in shape (hardness), strength) and durability after heat treatment. These technical problem addressed through these studies includes improving the manufacturing efficiency and reducing defective parts while maintaining consistently strong connections between components made up of those metals.

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