7,The given picture illustrates the production of wire
Looking from an overall perspective, it is readily clear that this man-made process comprises various stages, commencing with the mixture of iron ore and coking coal being heated, followed by a number of physical steps, and ending with the cooling process for the final products.
At the first stage of the process, fossil fuels such as coking coal and iron ore are mixed together, after this, the materials are heated in a blast furnace at a temperature of around 1300 Celsius degrees. Following this, the resulting substance is combined with reduced coal in an arc furnace, where the temperature reaches around 1800C. Next, lime are added in another furnace with the same temperature to remove impurities.
The process continues with the substances being transferred into a vat before being poured into moulds. Next, the solidified material undergoes pressing and shaping procedures. After that,these are transferred to a specific furnace and reheated at a lower temperature of 150 degrees, before passing through a series of pipes. Following the cooling process, the solidified metal is shaped into long rods, which are then turned into steel wire.
