- author = "Miha Kovacic",
- title = "Genetic programming and {Store Steel Ltd.}",
- booktitle = "9th International Scientific Conference, Management of Technology - Step to Sustainable Production (MOTSP 2017)",
- year = "2017",
- editor = "Predrag Cosic and Gordana Baric and Goran Dukic and Tihomir Opetuk and Maja Trstenjak and Max Regenfelder",
- address = "Dubrovnik Croatia",
- publisher_address = "Ivana Lucica 1, 10000 Zagreb, Croatia",
- month = apr # " 5-7",
- organisation = "Croatian Association for PLM",
- note = "Keynote Speaker",
- keywords = "genetic algorithms, genetic programming",
- broken_spam = "http://motsp.org/",
-
URL = "
https://www.hatz.hr/beta/wp-content/uploads/2017/03/MOTSP-2017_program.pdf",
-
abstract = "Store Steel Ltd. is one of the biggest spring steel
producers in Europe. Steel making in Store begins with
scrap melting in an electro-arc furnace in steel plant.
The melting bath, which is heated up to tapping
temperature according to further treatment procedures,
is discharged into the casting ladle. After achieving
proper melt temperature from the melting bath the
billets are continuously cast. The melting bath flows
through a sliding gate system and ladle shroud towards
the tundish.
After filling up the tundish with a help of the mould filling system with tundish stoppers and submerged pouring tubes, the casting is established. The billets, with a square section of 180 mm, are cast. After reaching a certain melting bath level, the potentiometer starts the flattening system, which drags the billet out of the mould. In this way the continuous casting is established. Each billet goes through the cooling zone toward the gas cutters, where it is cut and laid off onto the cooling bed.
After the heating of (already cooled down) billets, they are hot rolled in the strand of rolls in the rolling plant. Through the roll grooves with different shapes and dimensions the cylindrical, square or flat steel bars can be produced. Steel bars are cooled on the cooling bed. After cooling they are cut on the hot shears in different lengths.
Additionally the rolled material can be heat treated, straightened, controlled (automatic control line for detecting surface defects, inner defects and mixed material, magnetic particle inspection, manual ultrasonic inspection), cut, peeled, polished, chamfered and finally packed and stored. The last are usually conducted in cold finishing plant.
Genetic programming has been widely used in Store Steel Ltd. production. The genetic programming based researches in Store can be classified and listed in the following way:
steel plant:
* ladle furnace; management,
* casting; material properties modelling and its optimization
* casting; surface defects, optimization
rolling plant:
* heat treatment; productivity optimization
* material properties; modelling and its optimization
Store Steel Ltd. in general:
natural gas consumption prediction
* critical inclusion size determination
*emission modelling.",
