CONTINUOUSLY CAST BILLET HAVING SUPERIOR CRACK SENSITIVITY AND ELIMINATING SOAKING AND DIFFUSION TREATMENT

PURPOSE:To obtain the titled continuously cast billet by restricting the space factor of a part having a specified concn. or above of segregated P in the total area of a sample having a restricted area taken out of the central part of a continuously cast billet. CONSTITUTION:A desired area 12 which...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUMIYA TOORU, KOMAI TADANOBU, TAKEMURA YOUZOU
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY FERROUS OR NON-FERROUS ALLOYS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY PERFORMING OPERATIONS POWDER METALLURGY PUNCHING METAL ROLLING OF METAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain the titled continuously cast billet by restricting the space factor of a part having a specified concn. or above of segregated P in the total area of a sample having a restricted area taken out of the central part of a continuously cast billet. CONSTITUTION:A desired area 12 which is in a cross section of a continuously cast billet 10 in the lateral direction and includes the final solidification position 11 in the direction of the thickness is used as a sample. The area of the sample 12 is >=0.04% of the cross-sectional area of the billet 10 in the lateral direction. The sample 12 is taken out and analyzed all over the surface. The space factor of a part contg. >=0.1% P in the total area of the sample is restricted to =0.1% concn. of segregated P exerts considerable influence on HAZ cracking characteristics and wire breaking rate, so the desired billet can be obtd. by restricting the space factor as mentioned above.