Rolling and cooling controlled hot-rolling test rolling mill

Abstract

A thermo-mechanical control processing hot rolling testing mill comprises a mill furnance (1), a home roll mill and a hydraulic jet descaler (2), a rough roller mill (3), a roll table (13), and a finishing mill (8); a heat holding cover(4) which is provided with electromagnetic induction heaters (5) with intervals is arranged above a first section of the roll table (13); a channel (14) provided for billet steel to move is formed among the heat holding cover (4), the electromagnetic induction heaters (5) and the roll table (13); a second section of the roll table (13) behind the finishing mill (8) is provided with a three-section type cooling device and a coiler (12) is arranged behind the three-section type cooling device. The mill overcomes the shortcomings of the prior hot rolling mills that the function is single; and the heat treatment to steel plates can only adopt an off-line method, etc. The mill is suitable for both medium plates and hot rolling strip steel products and realizes the technological tests of new TMCP (thermo-mechanical control processing), which can obviously shorten the development cycle of new products and lower the developing cost and has important practical application value.

Description

technical field [0001] The invention belongs to a hot-rolling test rolling mill, in particular it is a controlled-rolling, controlled-cold and hot-rolling test rolling mill. It integrates the functions of pre-rolling heating, rolling, cooling, post-rolling heat treatment, straightening and other functions. Background technique [0002] The pilot test base is responsible for the pilot test tasks of the research and development of new products, new processes, new technologies, and new equipment for iron and steel enterprises. It is an important link in the transformation of technology into productivity. Doing a good job in the construction of the pilot test base can shorten the research and development cycle and reduce the cost of research and development. It is of great significance to realize the research and development guiding ideology of "application generation, promotion generation, research generation, and planning generation", which makes iron and steel enterprises pa...

AI Technical Summary

Problems solved by technology

[0004] Looking at the existing hot rolling equipment in the pilot test bases of advanced iron and steel enterprises at home and abroad, most of them are relatively simple in design, and most of the process ideas stay at the original level of "strike while the iron is hot". (Controlled rolling and controlled cooling) technology cannot be fully reflected in these pilot rolling mills

The relatively simple controlled cooling equipment of the existing pilot hot rolling mill cannot realize the central idea of ​​the new generation of TMCP technology, which to some extent hinders the research of new product development and new process methods and their application in actual mass production

[0005] In addition, the functions of the existing hot rolling mills are relatively simple, and the varieties and specifications are limited. Most of the considerations are limited to the varieties and specifications of thick or medium plates. To roll thinner steel plates, the only way to increase the number of rolling passes is to increase the number of rolling passes. The decrease limits the increase in the number of passes. The general reasons are: ①The design capacity of the test rolling mill cannot be too large;

[0006] At the same time, after the on-line rolling of the modern pilot-scale hot rolling mill, the heat treatment of the steel plate can only be done off-line, and the temperature drop is relatively large. different, and consumes energy and time

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