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    PRODUITS FILÉS POUR PLANCHERS D'AVION EN ALLIAGE ALUMINIUM CUIVRE LITHIUM
    4.
    发明公开
    PRODUITS FILÉS POUR PLANCHERS D'AVION EN ALLIAGE ALUMINIUM CUIVRE LITHIUM 审中-公开
    STRANGPRESSPRODUKTEFÜRFLUGZEUGBÖDENAUS EINER铝合金 - 锂离子

    公开(公告)号：EP3080319A2

    公开(公告)日：2016-10-19

    申请号：EP14825362.8

    申请日：2014-12-10

    申请人： Constellium Issoire

    发明人： PIGNATEL, Jérome ,  POUGET, Gaëlle

    IPC分类号： C22C21/16 ,  C22C21/18 ,  B21C23/00 ,  C22F1/057

    CPC分类号： B64C1/18 ,  B21C23/142 ,  B64C1/061 ,  B64C3/00 ,  B64C2001/0081 ,  C22C21/14 ,  C22C21/16 ,  C22C21/18 ,  C22F1/057

    摘要： The invention relates in particular to an unprocessed extruded product for manufacturing a machined extruded product for the aeronautical industry, made of an Al-Cu-Li alloy with the following composition, as weight percentages: Cu: 2.0 - 6.0; Li: 0.5 - 2.0; Mg: 0 - 1.0; Ag: 0 - 0.7; Zn 0 - 1.0; and at least one element selected among Zr, Mn, Cr, Se, Hf and Ti, the amount of said element, if chosen, being 0.05 to 0.20 wt % for Zr, 0.05 to 0.8 wt % for Mn, 0.05 to 0.3 wt % for Cr and for Se, 0.05 to 0.5 wt % for Hf and 0.01 to 0.15 wt % for Ti, Si ≤ 0.1; Fe ≤ 0.1; others ≤ 0.05 each and ≤ 0.15 in total, the balance being aluminium, having an unprocessed core (21) with an aspect ratio of at least 5 and at least one unprocessed flank (22) with an aspect ratio of less than 4 and in which the length direction is substantially perpendicular to the lengthwise direction of the core, characterised in that a portion of the unprocessed flank (22) connecting the unprocessed flank to the unprocessed core has decreasing thickness and in that the ratio of the thickness of said unprocessed flank (22) at the end of said unprocessed flank connected to the web (E221) to that at the end thereof opposite the core (E222) — i.e. E221/E222 — is less than 0.8, thus defining two substantially symmetrical concave areas. The invention also relates to the method for manufacturing a machined extruded product and to the corresponding machined extruded product. The products according to the invention are useful in particular for manufacturing floor beams and girders.

    摘要翻译： 本发明具体涉及用于制造由Al-Cu-Li合金制成的用于航空工业的加工挤出产品的未加工的挤出产品。 本发明还涉及用于制造加工的挤出产品的方法和相应的加工的挤出产品。 根据本发明的产品特别用于制造地板梁和桁架。