Traditional process to produce electrode of alloy steel 30CrMnSiA1.2 t ESR ingot at Daye Special Steel is EAF+LF-rolling250 mm×250 mm Billet
by which the crack easily produced at top of ESR ingot.With using optimum process to produced ESR electrode:EAF+LF(VD)steelmaking-φ320 mm cast round electrode
controlling≤0.003Pb
≤0.015Sn
≤0.030As
≤0.015(Pb+Sn)and0.020~0.035Ti in electrode
power supplying and water temperature controlling by computer
the ESR filling ratio increased from 0.40 to0.53
ESR electrical power consumption decreased by 200 kWh/t
metal yield of ESR ingot/electrode increased from 82.41% to93.75%
rejected metal decreased from 109.55 kg/t to29.42 kg/t and production period shortened by 7~10 day8.