Process for obtaining a low silicon aluminium alloy part

• Main Authors: EPALE ROMAIN, DI SERIO EMILE THOMAS
• Format: Patent
• Language: Chinese; English
• Published: 26.09.2017
• Subjects: ALLOYS; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; FORGE FURNACES; FORGING; HAMMERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; PERFORMING OPERATIONS; PRESSING METAL; PUNCHING METAL; RIVETING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The low silicon aluminium alloy part comprises silicon, magnesium, copper, manganese, titanium and strontium. Said part is obtained by a process according to which: - said alloy is cast in a mould in order to obtain the part, - after casting, the part constituting a still hot preform is removed from the mould, - said preform is cooled and is then subjected to an operation capable of reheating it to a temperature between 470 DEG C and 550 DEG C, - said part is positioned between two shells of a die that complete a cavity having dimensions that are substantially equal, but smaller than that of the mould, - the two shells are pressed strongly against one another in order to exert on the part positioned between said shells a combined pressing and surface kneading effect. 所述由低硅铝合金制成的零件含有镁、铜、锰、钛和锶。所述零件通过由以下步骤组成的方法获得：-在模具中模铸所述合金以获得所述零件；-在所述模铸之后，将所述零件脱模构成仍然很热的预成型件；-冷却所述预成型件，然后使其经受适于将所述预成型件重新加热至在470℃至550℃的范围内的温度的操作；-将所述零件定位在模具的两个壳体之间，所述模具限定了尺寸基本上等于但小于所述模具的腔体尺寸的腔体；并且-强力地将所述两个壳体按压在起，在设置在所述壳体之间的所述零件上施加组合的按压和表面捏合效应。