81.
    发明专利
    未知

    公开(公告)号:DE69422377T2

    公开(公告)日:2000-08-24

    申请号:DE69422377

    申请日:1994-11-21

    Applicant: SOLLAC PUTEAUX

    Abstract: Corrosion inhibitor for a metallic material such as steel, of the type consisting of an aqueous solution containing an alkali metal nitrite, characterised in that the said solution contains 0.01 to 0.3 mol/l of an alkali metal nitrite, 0.01 to 0.3 mol/l of an alkali metal phosphate and phosphoric acid in the proportion of a quantity sufficient to maintain the pH of the said solution, measured at ambient temperature, between 6.9 and 7.2.

    83.
    发明专利
    未知

    公开(公告)号:ATA184498A

    公开(公告)日:2000-01-15

    申请号:AT184498

    申请日:1998-11-06

    Abstract: The aim of the invention is to create an installation comprising a straight permanent mold (9) out of a continuous casting installation having a curved permanent mold (1), whereby as many components as possible of the continuous casting installation having the curved permanent mold (1) can be used for additional applications. To this end, the straight casting which exits the straight permanent mold (9) is, in at least one bending zone (12), curved along a transition curve to form the shape of a circular arc comprising a first radius (Rmin). In addition, said casting is, in at least one successive straightening zone (14), curved along a transition curve to form the shape of a circular arc comprising a second radius (Rend) which is larger than the first radius (Rmin). Said radius (Rend) preferably corresponds to the shape of the circular arc of an initial continuous casting installation having a curved permanent mold (1).

    PROCEDE D'ELABORATION D'UNE TOLE OU D'UNE BANDE EN ACIER POUR LA REALISATION D'UNE BOITE ET TOLE OU BANDE EN ACIER OBTENU PAR CE PROCEDE

    公开(公告)号:TNSN96032A1

    公开(公告)日:1998-12-31

    申请号:TNSN96032

    申请日:1996-02-23

    Applicant: SOLLAC SOC

    Abstract: L'INVENTION A POUR OBJET UN PROCEDE D'ELABORATION D'UNE TOLE OU D'UNE BANDE DESTINEE A LA REALISATION D'UNE BOITE OBTENUE PAR EMBOUISSAGE-REPASSAGE A PARTIR D'UN ACIER POSSEDANT LA COMPOSITION EN POURCENTAGE POIDS SUIVANTE, CARBONE INFERIEUR A 0,008 % MANGANESE COMPRIS ENTRE 0,01 ET 0,30 % AZOTE INFERIEUR A 0,006 %, ALUMINIUM COMPRIS ENTRE 0,01 ET 0,06%, PHOSPORE INFERIEUR A 0,015%, SOUFRE INFERIEUR A 0,020 %, SILICIUM INFERIEUR A 0,020 POUR CENT,. AU MAXIMUM 0,08 % D'UN OU PLUSIEURS DES ELEMENTS CHOISIS PARMI LE CUIVRE, LE NICKEL ET LE CHROME, LE RESTE ETANT DU FER ET DES IMPURETES RESIDUELLES, PROCEDE DANS LEQUEL LA BRAME EST LAMINEE A CHAUD EN UE TOLE A CHAUD OU FEUILLARD D'EPAISSEUR INFERIEURE A 3MM. PUIS LA TOLE A CHAUD OU LE FEUILLARD EST LAMINE A FROID AVEC UN TAUX DE REDUCTION COMPRIS ENTRE 83 ET 92% ET SOUMIS A UN RECUIT DE RECRISTALLISATION ET ENFIN RELAMINE A FROID AVEC UN TAUX DE REDUCTION COMPRIS ENTRE 10 ET 40%

    88.
    发明专利
    未知

    公开(公告)号:DE69102004D1

    公开(公告)日:1994-06-23

    申请号:DE69102004

    申请日:1991-03-25

    Applicant: SOLLAC PUTEAUX

    Abstract: The subject of the invention is a method for forming an embossed part on a metal sheet blank (10) with the aid of a die and a punch. A preforming operation and a shaping operation are carried out on at least one localised zone of the metal sheet blank (10), of greater dimensions than those of the said embossed part, thereby forming the said embossed part. During the preforming operation, a succession of tiered undulations are progressively produced on an intermediate zone of the said localised zone, located between the eventual high part of the said embossed part at the periphery of the said localised zone and, during the shaping operation, the tiered undulations of the said intermediate zone are progressively opened out and, simultaneously, the said embossed part is formed. … The subject of the invention is also an apparatus for implementing the method. … …

    90.
    发明专利
    未知

    公开(公告)号:DE69005798T2

    公开(公告)日:1994-04-28

    申请号:DE69005798

    申请日:1990-10-29

    Abstract: The subject of the invention is a ladle for treating metal, comprising a metal casing (1) which is equipped, on its inner surface, with a refractory wall coating (3) and with a refractory base coating (4) carrying a taphole (5), characterised in that the surface of the refractory base coating (4) in contact with the metal under treatment is a concave surface having, at any point, a slope directed towards the taphole (5). A further subject of the invention is a process for producing such a refractory base coating.

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