With an annual capacity of more than two million tons, the rolling mill is more than a half-mile long and includes a walking beam reheat furnace, a two-high scalebreaker, five four-high roughers, a crop shear, six four-high finish mills, and two downcoilers. Equipped with an automatic gauge control system and technologically advanced computer controls, the hot strip mill rolls slabs of seven to nine inches thick, into coils ranging in thickness from. Finishing facilities include a build-up line, a slitting line, and a skin pass line.
Gerdau Summit offers various roll options to meet the wide range of needs of rolling applications. Rolling mill rolls are made using a casting process, in which the outer layer of the roll work layer imparts wear resistance, while the inner layers core provide a combination of tenacity and mechanical resistance, which gives them the strength and quality to support the forces generated by rolling processes. You may be trying to access this site from a secured browser on the server.
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The primary purpose of a hot strip mill is to reheat thick steel slabs into thin sheets with varying thickness. The thick steel slab passes through several rolling mill stands that are driven by powerful motors. The rolled sheets then pass through coilers, thereafter these coils move on to the next process in the plant. From the startup to the end, the steel material undergoes several treatments through each stage that are the main features of a hot strip mill.
The ability to precisely measure the strip and plate dimensions during the hot rolling process is essential for the production of high quality steel and for achieving an optimum yield. DELTA has developed a range of gauges for installation in the extreme environmental conditions of the metal industry using the latest technologies with high resolution and high speed digital cameras. Sensors and Systems for the Steel Industry.
In the research area Hot Strip Rolling, advanced nonlinear process control problems associated with the operation of a tandem hot-strip finishing mill are solved. A tandem hot-strip mill like the one shown in Fig. Its behavior is characterized by input, state, and time constraints, time variance, uncertainties, and a continuous mode of operation.
The mill takes a slab of steel of around 12 metres long and roughly 25 centimetres thick and turn it into something that could be almost a kilometre long and as slim as 1. The process starts at the far end of the odd metre-long hot strip mill, where slabs arrive from the slab yard and are loaded one at a time in the furnace. Depending on what the end requirements are, the slabs will be heated by the use of gas from the coke ovens to between and degrees Celsius.
Several run-out table pumps feed cooling water to the header tank, which supplies the laminar flow cooling tubes on a hot strip mill. Constant water level in the header tank produces a constant pressure at the flow control valves in the laminar flow lines and allows good flow control. If too much flow enters the header tank the surplus water overflows into the scale water pit, which represents a waste of pumping energy. In order to improve this situation, a water supply control has been developed which uses existing control information and predictive information from the strip mill models.
Around a third of the products we send out to our customers, are hot rolled. In the hot strip mill Ghentslabs coming from the continuous caster are rolled out to steel plates with a thickness of around 1. First, the slabs coming from the continuous caster are pre-sorted in the slab yard.