Refining and Qualty of Slabs and Heavy Plates Produced by 40t Electro-Slag-Remelting Process

Research on the Surface Quality of ESR Large Slab Ingots

“…In order to minimize the conduction losses, a bifilar congurations and a low frequency in the range 2-5 Hz is used [1,2] . The secondary cooling technology developed reduces string-like segregation of slab ingots [3,4] , and it can improve greatly the quality of solidification. Reduction of hydrogen content in slab ingots has been made possible by the control of atmosphere and the use of liquid slag starting [3][4][5] .…”

“…The secondary cooling technology developed reduces string-like segregation of slab ingots [3,4] , and it can improve greatly the quality of solidification. Reduction of hydrogen content in slab ingots has been made possible by the control of atmosphere and the use of liquid slag starting [3][4][5] . But because of ingot and mold with a relatively mobile, larger ingot contraction and thicker slag skin in ESR process for large slab ingots, the ingots surface quality is a serious problem.…”