SMS SIEMAG
SMS Siemag expands the 5,0-m heavy-plate mill for Hyundai Steel
Hyundai Steel, Republic of Korea, has placed an order with SMS Siemag, Germany, for the expansion of its 5.0-m heavy-plate mill in Dangjin, Republic of Korea. The 5.0-m heavy-plate mill went into operation in December 2009 and was completely supplied by SMS Siemag. By expanding the mill, Hyundai Steel can increase its production from 1.5 to 2.0 million tpy and enhance its product range. The upgrade will take place in several stages in 2013.
The order includes a new roughing stand with edger, the expansion of the plate cooling system, an additional cooling bed, a second dividing shear as well as new pilers and roller tables in the plate yard. The entire X-Pact automation for these facilities is likewise part of SMS Siemag’s supply scope.
The new roughing stand has a roll force of 100 MN and is equipped with hydraulic adjustment system. An edger is flanged-on at the exit side of the stand for precise adjustment of the plate width.
SMS Siemag will be extending the extending the existing laminar cooling section of the mill to include a spray cooling system with a pre-leveler. The combination of spray and laminar cooling provides Hyundai Steel with a wide spectrum of cooling strategies and thus enhances its product range. The pre-leveler in the entry section of the plate cooling system eliminates any unflatness in the entering plates and thus ensures a uniform cooling effect.
The new dividing shear will be installed parallel to the existing dividing shear and, like this, is designed for cutting high-strength plates with a thickness of up to 50 mm.
Like with the plant which has already been supplied, the new facilities will also be operating with SMS Siemag’s X-Pact Level 1 and Level 2 automation system.
Together with the expansion of the 5.0-m mill, Hyundai Steel has also placed an order with SMS Siemag for the construction of a new 4.3-m heavy-plate mill. With these investments, Hyundai Steel will be increasing its heavy-plate capacity in Dangjin to a total of 3.5 million tpy
Tokyo Steel grants acceptance for SMS Siemag-supplied slab caster
Just four months after the first cast of the two-strand slab caster and following the successful conclusion of all performance tests, Tokyo Steel Mfg. Co. Ltd., Tahara, Japan, granted SMS Siemag, Germany, its acceptance.
The vertical-bending caster with 16 segments and a metallurgical length of 35 m is designed for a maximum casting speed of 2.2 m/min and an annual production of 2.4 million t of steel slabs. The new continuous caster will produce high-quality slabs primarily for utilization in automotive manufacturing.
SMS Siemag’s supply scope consisted of the Basic and Detail Engineering, all mechanical core components and the entire X-Pact electrical equipment and automation system. Training of the customer personnel and the supervision of erection and commissioning were also included in the scope of SMS Siemag’s services.
The equipment of the caster includes several Intelligent Slab Casting (ISC) modules which determine quality and production.
The hydraulically operated resonance oscillator and the remote-controlled mold narrow faces for width change during casting allow the casting width to be altered as required between 800 and 1,625 mm during operation.
Dynamic Soft Reduction and the variable Spot Cooling as well as the width-dependent air-mist secondary cooling system and the technological process model Dynamic Solidification Control ensure the production of slabs with a high inner quality.
The roller table in the exit section of the two-strand slab caster allows conventional cooling in the slab store or a direct transfer to the rolling mill. The surface quality of the slabs increasingly allows direct charging, which also saves energy for reheating.
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