Method for making low carbon high chromium alloyed steels

Details Method for making low carbon high chromium alloyed steels Method for making low carbon high chromium alloyed steels

1976-06-04

1978-08-01

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

751305, C21C 710, C22C 3300

Patent

active

041040570

ABSTRACT:
A low carbon high chromium alloyed steel is made by an underpressure treatment wherein a steel melt with a high chromium and carbon content is supplied with a gaseous decarbonization agent while it is maintained at an underpressure. At the beginning of the underpressure treatment the steel flows upwardly from a ladle through an inlet into a reaction vessel and no decarbonization agent is supplied. In a second phase of the treatment a high quantity of decarbonization agent is added directly to the melt which flows upwardly from the ladle into the reaction vessel. In a third treatment phase a small quantity of decarbonization is supplied. The melt is subsequently deoxidized and alloy corrected and it is then poured off from the reaction vessel. The apparatus includes a reaction vessel which has a downwardly extending inlet connected to the ladle and an outlet spaced from the inlet extending down into the ladle within the melt thereof. The inlet includes means for directing a decarbonization agent directly into the inflowing melt at the inlet. The apparatus includes a downwardly extending oxygen blow lance which is sealed at its entrance into the top of the vessel and which is water cooled by a surrounding water cooling jacket system. The vessel also includes an inlet for additional alloy materials.

REFERENCES:
patent: 3136834 (1964-06-01), Lorenz
patent: 3268326 (1966-08-01), Hardens
patent: 3320053 (1967-05-01), Lehman
patent: 3737302 (1973-06-01), Pomey
patent: 3798025 (1974-03-01), Ramachandrau

Affiliated with

Also associated with

Rating

Method for making low carbon high chromium alloyed steels does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for making low carbon high chromium alloyed steels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making low carbon high chromium alloyed steels will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1977589