Novolipetsk steel, the flagship company of NLMK Group, has introduced a digital service that optimizes the rate of rolling steel slabs in hot rolling mill.
On the mill slabs (steel billets) rolled into hot rolled strip thickness from
1.5 to 16 mm. For this purpose, the slabs are heated in furnaces and five by the operator alternately served on the mill for a subsequent rolling. The operator, choosing the rate of rolling should take into account a few factors below, in particular, to prevent the collision of slabs to ensure the required level of temperature in certain areas depending on the grade of steel, to maximize the productivity of the mill.
Before the operator calculated the output rate of the slabs manually based on intuition and experience. New digital service defines this indicator automatically. The model is built on the principles of machine learning analyzes the size, composition and the level of heating of the slab, and the parameters required of the finished product and the technical condition of the mill. Based on these data, the model predicts the speed with which the metal must go all the way from the furnace to the rolling line and recommends that the operator, when out of the oven to give the following slab.
the Project started in the end of last year. Today, thanks to digital service, the interval for the issuance of slabs decreased by 5%, increasing thus the productivity of the hot rolling mill. The company's specialists continue to "train" the model and increase the efficiency of the service.
"meanwhile, a joint team of production specialists and digital solutions to implement more than 50 services at various production stages and sites of the NLMK Group. This work is a solid basis for further growth the company's operating performance using digital tools," commented Director of digital transformation NLMK Sergey Kazantsev.
about the company
NLMK Group is a vertically integrated steel company and Russia's largest and one of the world's most efficient producers of steel products.
NLMK's metal Products are used in various industries, from construction and engineering to power-generating equipment and offshore wind turbines.
the Production assets of NLMK are located in Russia, Europe and the USA. The production capacity of steel companies over 17 million tonnes a year.
NLMK has high competitiveness in cost among global manufacturers, the company's profitability is one of the highest in the industry. The company's revenue for 2019 amounted to 10.6 billion dollars, EBITDA – $ 2.6 billion. The ratio of Net Debt/EBITDA amounted to 0.7 H. the Company has a credit rating of investment grade from S&P, Moody's, Fitch and RAEX (Expert RA).
Ordinary shares of JSC "NLMK", free float which is 18.6%, are traded on the Moscow Stock Exchange (Ticker "NLMK"), global Depositary shares on the London stock exchange (Ticker "NLMK:LI"). The share capital of the Company is divided into 5,993,227,240 shares with a par value of 1 Russian ruble. Read more about equity NLMK can be found at the link.
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