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Smelting of high-quality boiler steel in large-load arc furnaces

Journal Article:

Abstract

High-grade steel can be obtained in large-capacity furnaces if the smelting technology used takes account of the size of the aggregates, the course of the metal fusion process, interaction with slag, furnace atmosphere, reducing agents, and other process characteristics. 12Kh1MF boiler steel smelted in a 100-ton electric arc furnace by an oxidizing process with oxygen bath blow and cast by the siphon method into 6.5-ton ingots using a slag-forming mixture (240 mm diameter billets and 219 to 245 mm diameter tubes) is satisfactory with regard to macro and microstructure, oxygen and nonmetallic oxide inclusion content, and mechanical properties. The stress rupture strength of 10/sup 5/ h at 570/sup 0/C is similar to that of open-hearth steel. Sulfides larger than a 3.5 spheroid have been detected in it. The nitrogen content of the electric steel is 0.0090 to 0.0120%, which is somewhat greater than usual in open-hearth metal. Of the oxygen inclusions in the steel, spinel-alumina predominates. Large inclusions were represented mainly by brittle silicates which appeared to be of exogenous origin.
Authors:
Kablukovskij, A F; Breus, V M; Tyurin, E I; Khristich, V D; Dumchev, Ya P [1] 
  1. Tsentral'nyj Nauchno-Issledovatel'skij Inst. Chernoj Metallurgii, Moscow (USSR)
Publication Date:
Feb 01, 1975
Product Type:
Journal Article
Reference Number:
AIX-07-236332; EDB-76-053597
Resource Relation:
Journal Name: Stal; (USSR); Journal Volume: 2; Other Information: For English translation of selected articles see the journal Stal USSR
Subject:
36 MATERIALS SCIENCE; STEELS; CASTING; ARC FURNACES; CHEMICAL COMPOSITION; DISTRIBUTION; INCLUSIONS; MICROSTRUCTURE; MIXTURES; NITROGEN; OXYGEN; REDUCTION; SMELTING; YIELD STRENGTH; ALLOYS; CHEMICAL REACTIONS; CRYOGENIC FLUIDS; CRYSTAL STRUCTURE; DISPERSIONS; ELEMENTS; FABRICATION; FLUIDS; FURNACES; IRON ALLOYS; IRON BASE ALLOYS; MECHANICAL PROPERTIES; NONMETALS; 360101* - Metals & Alloys- Preparation & Fabrication
OSTI ID:
7351495
Country of Origin:
USSR
Language:
Russian
Other Identifying Numbers:
Journal ID: CODEN: STALA
Submitting Site:
INIS
Size:
Pages: 126-129
Announcement Date:

Journal Article:

Citation Formats

Kablukovskij, A F, Breus, V M, Tyurin, E I, Khristich, V D, and Dumchev, Ya P. Smelting of high-quality boiler steel in large-load arc furnaces. USSR: N. p., 1975. Web.
Kablukovskij, A F, Breus, V M, Tyurin, E I, Khristich, V D, & Dumchev, Ya P. Smelting of high-quality boiler steel in large-load arc furnaces. USSR.
Kablukovskij, A F, Breus, V M, Tyurin, E I, Khristich, V D, and Dumchev, Ya P. 1975. "Smelting of high-quality boiler steel in large-load arc furnaces." USSR.
@misc{etde_7351495,
title = {Smelting of high-quality boiler steel in large-load arc furnaces}
author = {Kablukovskij, A F, Breus, V M, Tyurin, E I, Khristich, V D, and Dumchev, Ya P}
abstractNote = {High-grade steel can be obtained in large-capacity furnaces if the smelting technology used takes account of the size of the aggregates, the course of the metal fusion process, interaction with slag, furnace atmosphere, reducing agents, and other process characteristics. 12Kh1MF boiler steel smelted in a 100-ton electric arc furnace by an oxidizing process with oxygen bath blow and cast by the siphon method into 6.5-ton ingots using a slag-forming mixture (240 mm diameter billets and 219 to 245 mm diameter tubes) is satisfactory with regard to macro and microstructure, oxygen and nonmetallic oxide inclusion content, and mechanical properties. The stress rupture strength of 10/sup 5/ h at 570/sup 0/C is similar to that of open-hearth steel. Sulfides larger than a 3.5 spheroid have been detected in it. The nitrogen content of the electric steel is 0.0090 to 0.0120%, which is somewhat greater than usual in open-hearth metal. Of the oxygen inclusions in the steel, spinel-alumina predominates. Large inclusions were represented mainly by brittle silicates which appeared to be of exogenous origin.}
journal = {Stal; (USSR)}
volume = {2}
journal type = {AC}
place = {USSR}
year = {1975}
month = {Feb}
}