ElectroSlag Remelting (ESR) under neutral protective gas at Esfarayen Industrial Complex is now fully operational.
ElectroSlag Remelting (ESR) under neutral protective gas at Esfarayen Industrial Complex is now
fully operational. The ESR has been added to the production line from Sept.
2017. This unique instrument, in Iran and the whole Middle East region, was
brought to the production line as one of the developmental plan of EICO’s
research and development vision. The facility enables EICO to annually produce
about 6000 Tons of different ESR high quality alloyed steels such as cold and
hot work tool steels, mold steel, steel for bearings, stainless steel
(austenitic, ferritic, martensitic, Duplex, precipitation hardening) etc.
The high quality
alloyed steels produced by EICO’s ESR can be used in industries such as Oil,
Gas & Petrochemical, power plants, steel, automotive, etc.
EICO’s ESR can
be operated under neutral gases (Argon,
Nitrogen). The protective neutral gas impacts
the quality of the products as follows:
Or very small hydrogen pick-Up in steel During ESR (less than 0.5 ppm)
low oxygen levels attainable (<10ppm) with usual ternary slags.
excellent micro cleanliness and improved mechanical (toughness) properties.
of oxidation of active elements such as Al, Ti, Zr in special Alloys.
of very low nitrogen levels and no nitrogen pick-up.
sulfur lost in free cutting steels under neutral gas shield by using acidic
slag saturated with sulfur.
in compositional & microstructural homogeneity and product quality compared
with the process under atmospheric condition.
The ESR at Esfarayen Industrial Complex is capable of
producing ingots with the diameter from 450 mm to 1200 mm, length up to 6 m,
and maximum weight of 52 Tons. These ingots are then used in different sections
of EICO as an input to produce final products (based on costumer requirements)
with open die forging, radial forgings, and high precision machining
It is worth mentioning that the ESR
products, in addition to nourishing the needs of Iran’s internal market, can be
exported internationally as well.