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Pickling
The pickling process removes oxide film which causes
surface defects in the final cold rolled products by putting
the hot rolled steel coil through a scale breaker and
the chloric acid tank. |
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Cold Rolling
To secure the precise thickness for the appropriate material,
the supply rate is 40%~90% and uses such cutting-edge
systems as automatic gauge control system and automatic
shaper control for uniform thickness and shape. |
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Annealing
Process to soften the steel coil hardened by cold rolling.
A productive manufacturing process that can produce deep
drawing quality and high tensile strength steel magnetized
by metal heating and abrupt cooling. Both box annealing
and continuous annealing methods are employed. |
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Insulation Coating
When processing electrical steel and piling it to use
as steel wire, a coating is continuously applied to the
top and the bottom part of the steel to improve drawability
to minimize electric loss.
-Grain-oriented steel: C-10 (non-organic coating)
-Non-oriented: C-6A,B (organic+non-organic combined), C-9A,B(organic+non-organic combined)
** C-9A,B : excellent insulation property |
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