Document Type and Number:
Japanese Patent JPH0368099
Kind Code:
B2
Abstract:
The invention relates to the methods for the preparation of steels with high machinability, comprising globular inclusions which allow for high cutting speeds by means of carbide tools. The method according to the invention consists of introducing into a liquid steel which has been deoxidized carefully with aluminum, and desulfurized, additions of calcium and sulfur, carried out by a cored wire, the contents obtained being from 20 to 100 ppm calcium and 150 to 500 ppm sulfur. The steels prepared under this method offer a particular aptitude for high speed machining with the aid of carbide cutting tools.
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Inventors:
ANDORE GEYUSUIE
EDOMONDO UASHIRII
EDOMONDO UASHIRII
Application Number:
JP4801084A
Publication Date:
October 25, 1991
Filing Date:
March 13, 1984
Export Citation:
Assignee:
VALLOUREC
International Classes:
C22C33/04; C21C7/00; C21C7/064; C22C33/00; C22C38/00; C22C38/60