What Are the Main Safety Technologies for Rolling Steel?

1. Rapid cooling technology after plate rolling, using internationally advanced high-density tube laminar flow cooling device to improve the production of special steel plates by controlled rolling control cooling process in the production of medium and heavy plates, and improve the mechanical properties of the steel plates.

2. Controlled rolling and controlled cooling technology for bar production can achieve temperature controlled rolling between the inter-stand and inter-unit rolling by the specially designed cooler, to improve the strength and toughness of the bar.

3. Cold rolling, hot rolling, plate shape control technology, including design and optimization of roll shape; strip shape on-line detection, signal recognition and shape evaluation; shape control strategy and pre-set, feedforward and feedback mathematical models.

4. Hydraulic AGC technology, using high-performance hydraulic APC, AGC control system, has the advantages of fast response speed and high control precision. It is replacing electric AGC as the technology of today’s new rolling mills.

5. Complete sets of equipment and technology for dual stand reversible cold rolling mill. The technology chooses different rolling passes according to the material, specification and production conditions of the rolled strip, so that the rolling mill can flexibly adapt to the changes of the quality, specification and coil weight of the strip in a wide range, with high product precision, and can develop precise strip and non-ferrous metal foil strip.

6. Hot-rolled narrow strip steel production equipment and process technology, close to the broadband steel in the process and equipment, replace the looper oscillator and vertical coiling with laminar cooling and horizontal coiler. High-pressure water descaling before rough rolling mill can obviously improve the surface quality and performance of strip steel and increase coil weight to 1-2 tons.

7. On-line inspection system for surface quality based on image processing. The system uses CCD camera to collect the surface image of the product on the production line, and analyzes and processes the image in real-time through image processing and pattern recognition algorithm to detect whether there is a defect on the surface of the product. And obtain the size, location, type, grade and other information of the defect, so as to achieve the purpose of online evaluation and control of the surface quality of the product.

8. Steel product development and performance optimization techniques, including the influence of process parameters on the forming properties of IF steel; the research of ultra-fine grain and high-strength pure steel; the research of high-strength micro-alloyed steel.

9. Bar and wire rod size online detection system analysis software package. This software package is developed in C++, the system installation is convenient and fast, the system runs stably and reliably, with good human-machine interface supports automatic report generation and printing, and has statistical analysis, history record playback, query, and other functions.