Investigations about Starting Cracks in DC Casting of 6063

Investigations About Starting Cracks in DC Casting of 6063 Type Billets. Part I: Experimental Results
W. Schneider and E.K. Jensen

Influence on starting crack tendency (hot cracks in billet center) of varying a number of casting parameters was studied by experiments (Part I) and by model calculations (Part 11). Effects of varying the following factors were examined in detail: casting conditions, starting block material, insulating various parts of the starting block, starting block shape, Both experiments and calculations pointed to starting block shape as a most important single factor controlling starting cracks. By using the in experiments determined and calculated depth of the liquid sump as a criterion, a proper shape was found that practically eliminates the starting crack problems in billets of the AA 6063 type alloys.

This paper is the recipient of the 1991 Light Metals Award

Publisher: TMS
Product Format: PDF
Pages: 931-936
Date Published: January 1, 1990
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