公开(公告)号：DE2643075A1

公开(公告)日：1977-04-07

申请号：DE2643075

申请日：1976-09-24

Applicant: SERVIMETAL

Inventor： BEGUIN JEAN-CLAUDE ,  GUERIT PIERRE

IPC: C21C7/04 ,  C22B9/10 ,  C22B21/06 ,  C22B21/00

Abstract: The invention relates to a preparation of aluminum and its alloys for purification by utilizing a flux composition of MgCl2 and KCl to substantially remove alkali and alkaline earth metals, such as, Ca and Na, from the formulation of an aluminum preparation.

公开(公告)号：FR2312570A1

公开(公告)日：1976-12-24

申请号：FR7517200

申请日：1975-05-28

Applicant: SERVIMETAL

Inventor： GUERIT PIERRE ,  POLLET GILBERT

IPC: C22B21/06 ,  C22C1/02 ,  C22C1/00 ,  C22C21/00

Abstract: Pellets or briquettes contg. a pre-alloy or metal and employed in the prodn. of aluminium alloys contain in addn. to the finely divided metal or pre-alloy, a flux which evolves gas when placed in the molten bath of metal. The wt. ratio of metal to flux is pref. between 1:1 and 20:1, and the pref. flux is eiher (a) a halo-hydrocarbon which is solid at room temp. esp. hexachloroethane; or (b) a salt mixt. of alkali (ne earth) metal(s) and/or aluminium, at least one salt evolving gas in the molten bath. Simplifies the addn. and dissolution of alloying elements such as Mn, Cu, Fe, Si, Ni, Zn, Co, Cr, Bi, Cd, Zr, Be or B in molten aluminium to obtain the correct compsn. prior to casting despite differences in density and/or slow dissolution speeds. The rapid and uniform distribution of the allowing element(s) throughout the bath, obviates the slow and arduous hand stirring previously necessary.