Deformed steel bar finished product wave optimization technology

Abstract

A process for optimizing the corrugation pattern of rebar finished products, the method is: adopt the production process route of steel billet heating→rough rolling→finish rolling→natural cooling→cutting length→inspection→storage, and heat the steel billet to 1070-1180°C when heating the steel billet; In the rough rolling process, 5 stands of micro-tension rolling are adopted, and the temperature is controlled at 1000-1100°C; cooling method. By using the upper and lower roller grooves to engrave letters and adjust the number of marked ribs, increase the width and depth of characters, so that the rebar does not bend, and effectively improve the wavy bend of the finished product.

Description

technical field [0001] The invention relates to a process for optimizing corrugated patterns of threaded steel products. Background technique [0002] In the production process of rebar in a steel factory, especially the specifications of φ25mm~φ32m, the finished product frequently has wavy bending, and when the bending degree is serious, the bending degree per meter is 8-15mm, which does not change regularly and exceeds the range specified by the national standard (≤ 4mm / m). At first, it was judged that the cause of the wavy bend was due to the precision bounce of the rack or insufficient processing precision of the rolling groove. After selecting a good rolling mill and reprocessing the rolling groove, the bending degree per meter still exceeded the standard; after replacing the rolling mill, rolling groove and guide guard , the phenomenon of single-meter bending exceeding the standard still exists and cannot be eliminated, resulting in mis-rolling time caused by unplanne...

AI Technical Summary

Problems solved by technology

At first, it was judged that the cause of the wavy bend was due to the precision bounce of the rack or insufficient processing precision of the rolling groove. After selecting a good rolling mill and reprocessing the rolling groove, the bending degree per meter still exceeded the standard; after replacing the rolling mill, rolling groove and guide guard , the phenomenon of single-meter bending exceeding the standard still exists and cannot be eliminated, resulting in mis-rolling time caused by unplanned replacement of specifications between 1 and 2 hours, and the finished product is cut to a length of about 20 tons, which seriously affects production costs, billet consumption and Completion of job rate indicators

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