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VERSION:2.0
METHOD:PUBLISH
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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 19a
SUMMARY:Industrial application of mechanical reduction in bloom continuous casting
DESCRIPTION:The present study focusses on the internal quality improvement of the spring (54SiCr6) and bearing (GCr15) steel blooms by optimizing the MSR (Mechanical Soft Reduction) and MHR (Mechanical Hard Reduction) process parameters on the continuous casting machine supplied by SMS Concast AG at Nanjing Iron &Steel Co. 
In addition to MSR and MHR, the caster is equipped with electromechanical stoppers, mold electromagnetic stirrer (M-EMS), final electromagnetic stirrer (F-EMS) and air-mist spray cooling. State of the art L1 and L2 software complete the technological packages for this machine.
Solidification status of the blooms with sections of 255 mm x 300 mm and 330 mm x 420 mm were determined by using the verified FEMS solidification model provided by SMS Concast AG. Theoretical effective reduction region was proposed based on the simulated crater end position of the blooms. Intensive industrial trials were conducted to study the effect of the reduction rate on the V-shaped and centerline segregation of the blooms. The results show that obvious improvement of internal quality of the spring and bearing steel blooms of both sections could be obtained by increasing the reduction amount and applying a suitable reduction rate in the effective reduction region during casting.

CLASS:PUBLIC
DTSTART:20230615T102000
DTEND:20230615T104000
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