Intelligent control technology for cooling of deformed-steel-bar fine-grained rolling rolled piece

Abstract

The invention discloses an intelligent control technology for cooling of a deformed-steel-bar fine-grained rolling rolled piece, and relates to the field of production of deformed steel bar. The rolling technological process includes the steps of rolling of a roughing mill-flying shear of a flying shear cutter I-rolling of an intermediate rolling mill-intelligent control over cooling of an intermediate rolled piece-flying shear of a flying shear cutter II-rolling of a finishing mill-intelligent control over cooling of a finish rolled piece-flying shear of a flying shear cutter III-cooling of acooling bed. The intelligent control process of rolled piece cooling includes the intelligent control over cooling of the intermediate rolled piece and the intelligent control over cooling of the finished rolled piece, the intelligent control over cooling of the intermediate-rolled piece is set after rolling of the intermediate rolling mill, and the intelligent control over cooling of the finished rolled piece is set after rolling of the finishing mill; the intelligent control technology is adopted to control the temperature in each process during the cooling process of the rolled piece, so that finally pearlite and ferrite structure can be obtained from the deformed steel bar without adding V alloy, the production cost is saved and the production efficiency is improved.

Description

Technical field: [0001] The invention relates to the field of threaded steel production, in particular to an intelligent control technology for cooling fine-grained rolled pieces of threaded steel. Background technique: [0002] my country is a well-deserved big country of iron and steel. In the past ten years since the beginning of the new century, my country's iron and steel industry has developed rapidly, and the output of crude steel has increased rapidly. %. At present, there are more than 1,400 iron and steel enterprises in the country. Among them, the output of rebar is about 300 million tons, and there are more than 500 production lines. [0003] At present, the level of automation and intelligence of domestic rebar production lines is relatively low, with high dependence on people and high cost. Rebar production has developed rapidly in recent years, from the original single-line rolling to two-slit, three-slit, four-slit, five-slit rolling, six-slit rolling has b...

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Problems solved by technology

In order not to appear martensite, the existing process increases Si and Mn to the u

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