The competitive advantages of Arvedi ISP ESP technology
Simplification and shortening of the production cycle
- The liquid steel is transformed into coils in a single plant, without interruption, without intermediate products (slabs), without manipulation of material, in 15 minutes for ISP and 7 minutes for ESP, and in a space of only 180 metres. Conventional techniques operate instead in distinct phases, through intermediate products, at different times and sometimes in different works, with a linear plant development in the order of 1000 metres or more.
Energy saving and reduction of the impact on the environment
- Arvedi technology maximises the exploitation of the heat contained in the liquid steel (the temperature along the whole cycle never drops below 950°C); this leads to considerably energy saving, which can be calculated as the equivalent of about 22 tonnes of oil saved for every 1000 tonnes of product; consequently a considerable beneficial effect on the environment since the lower demand for electrical power from power stations leads to a corresponding reduction of about 40% in CO2 emissions (greenhouse gases), well beyond the aims of the Kyoto protocol.
Reduction in invested capital and operating costs
- Invested capital per product unit of a manufacturing works based on Arvedi Technology (with its melt shop for liquid steel production) is two to three times lower than that required for a conventional steelmaking works which, to be economically efficient, needs to have a production of over 4 mtpy. With Arvedi technology break-even points can be reached of even less than 1 mtpy.
- The energy saving associated with higher productivity per head (2 to 3 times higher) leads to a reduction in operating costs of 30 – 50% compared with conventional cycles.
High quality of production and new types of products
- The particular and innovative solidification processes achieved by the process allow excellent internal steel structures to be obtained and a high quality end product, such as high strength and multi-phase steels which represent the new frontier in applications for the car industry.
- The plant also directly produces hot rolled thin gauges (1 – 1.5 mm) which with conventional cycles can only be obtained after a subsequent processing phase - cold rolling – and therefore with higher costs and greater energy consumption.
- The shortening of the production cycle, the placing in sequence and control in real time of the various processing phases, thanks to a high level of automation and computerised process control allow the end product to be obtained in only 90 minutes starting from the raw material (including therefore the melting of the scrap to produce the liquid steel).
- The plant using Arvedi Technology also allows strip thickness to vary from one coil to another, without a loss in productivity, providing the market with a service in terms of speed of response (which can be effected on a just-in-time basis) and a variety of supply which traditional systems, as represented by the big, extremely rigid steelmaking centres, cannot provide.
- The combination of the above-mentioned strong points can be summed up as lower capital expenditure for the investment, lower production costs, highly flexible production, high added value of the product mix leading to high profitability and a rapid return of the investment.