Title:
PREPARATION OF MOLTEN STEEL CONTAINING LOW MELTING POINT METAL
Document Type and Number:
Japanese Patent JPS6046311
Kind Code:
A
Abstract:
PURPOSE: To obtain molten steel containing low melting point metals with low cost, which is excellent in machinability and less dispersion of quality, by adding thereto low melting point metals in the form of sulfides.
CONSTITUTION: As a low melting point metal sources, low melting point metals; Pb, Bi, etc., sulfides of said metals; PbS, and Bi2S3, and the mixture of their oxides, if needed, are added to the molten steel. A steel ingot obtained by this process has little dispersion in the analytical values of Pb and Bi taken from the plurality of portion of the ingot, and has advantage that environmental problems can be disolved as no dust is generated when adding these low melting point metals.
Inventors:
KAMISAKA EIJI
MAEDE HIROFUMI
KAWACHI YUUJI
MAEDE HIROFUMI
KAWACHI YUUJI
Application Number:
JP15549083A
Publication Date:
March 13, 1985
Filing Date:
August 25, 1983
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
C21C7/04; C21C7/00; C22C33/04; (IPC1-7): C21C7/00; C22C33/04
Attorney, Agent or Firm:
Akizawa Masamitsu
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