degassing of electro-slag remelting before martensitic stainless steel

摘要

As for this invention, as for the said manner, it has with the step of becoming erect loss lag redissolution of the ingot of the aforementioned steel and continuously the step which cools the aforementioned ingot in regard to the manner which produces the martensite type rustless steel. The ingot, although the hydrogen content of 3ppm is obtained in the ingot, receives vacuum exhausting before the erect loss lag redissolution step over sufficient time.