New Boiler System
EQS has replaced our boiler system that services our vacuum degassing with a state of the art steam plant. Four boilers, not one, ensure optimal conditions for vacuum degassing consistently.
New Teeming Bay
EQS has expanded our teeming facilities to include a brand new area for teeming large diameter ingots. This will increase our teeming capacity for all mold sizes.
TECHNICAL / WHITE PAPERS :::::
COMPOSITION CONTROL AT ELLWOOD QUALITY STEELS COMPANY
Bjorn E. Gabrielsson, Chief Metallurgist, and Steve Lubinski, Chief Chemist
Abstract
Consistency of chemical composition us one of the main design criteria of the Ellwood Quality Steels Company's new melt shop. Consistent Chemical Composition results in repeatable response to heat treatment and consistent mechanical properties. Tight chemistry control heat after heat is built into the design of the EQS steelmaking equipment ad the software controlling it.
This report briefly explains the steelmaking process and how the split ASEA-SKF secondary steelmaking unit is controlled by the computer to produce excellent composition control.
Chemistry results are presented for five common grades. For example, the implementation of this composition control technology has resulted in carbon control at .03% total range.
THE CONTROL OF HYDROGEN DURING PRODUCTION OF FORGING INGOTS AT ELLWOOD QUALITY STEELS COMPANY
Bjorn E. Gabrielsson, Chief Metallurgist, and Steve Lubinski, Chief Chemist
Abstract
Hydrogen control has always been an important factor in steel production at Ellwood Quality Steels Company, which began operation in late 1985, because majority of the production is bottom poured forging ingots.
An investigation has been performed at the Ellwood Quality Steels Company to determine the efficiency of hydrogen removal during vacuum treatment in an ASEA-SKF vacuum station with combined argon gas plus induction stirring and with only argon stirring. A mixing time study was performed and used to describe and explain the superiority of hydrogen removal associated with combined stirring opposed to argon stirring alone.
In addition, hydrogen sampling and analysis techniques were also examined. Efforts to decrease hydrogen pick-up during bottom pouring are described with their effect on the final hydrogen content of the liquid steel in the mold.
The results of this investigation have demonstrated that the hydrogen sampling and analysis methods used at EQS are effective in assuring the hydrogen levels in liquid steel. The implementation of this hydrogen control technology has consequently resulted in hydrogen levels less than 1.5 ppm in the bottom poured forging ingots produces at Ellwood Quality Steels Company.
THE FUNDAMENTALS OF HIGH QUALITY BOTTOM-POURED INGOT PRODUCTION AND THEIR IMPLEMENTATION AT ELLWOOD QUALITY STEELS COMPANY
Gregory J. Manzo, Manager of Quality Control, and Bjorn E. Gabrielsson, Vice President - Operations
Abstract
Although the percentage of steel continuously cast continues to increase, high quality bottom-poured ingots are still required for special applications and large section sizes. This was a major reason for the construction of the Ellwood Quality Steels Company's melt shop in New Castle, PA. EQS utilizes the split ASKEA-SKF secondary steelmaking unit to supply the teeming bay with steel having an excellent composition and temperature control.