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Method for the production of an anodised, turned mechanical part made from 6xxx alloy and having low roughness after anodisation
Method for the production of an anodised, turned mechanical part made from 6xxx alloy and having low roughness after anodisation
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机译:用于生产由6xxx合金制成且在阳极氧化后具有较低粗糙度的阳极氧化的车削机械零件的方法
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摘要
The invention relates to a method for the production of a mechanical part, comprising the following successive steps: casting of a billet of aluminum alloy with a composition (in weight %) of 0.4-3.0 Si; 0.6-2.0 Mg; 0.20-1.0 Cu; 0.15-1.8 Fe; Mn0.5; Ni1; Ti0.15; Cr0.35; Bi0.8; Pb0.4; Zr0.04; other elements 0.05 each and 0.15 total, the remainder being aluminum; homogenization of the billet; extrusion of the billet in order to obtain an extruded product; quenching while at extrusion heat; optional cold-deformation and/or straightening, typically by means of pulling and/or drawing, and/or curing of the extruded product; tempering; optional cold-deformation of the extruded product, typically by drawing; machining of the resulting extruded product in order to obtain a turned mechanical part; optional shaping of the resulting mechanical part; anodizing of the resulting mechanical part at a temperature of between 15 and 40 C with a solution comprising between 100 and 250 g/l sulphuric acid and between 10 and 30 g/l oxalic acid and between 5 and 30 g/l of at least one polyol. The anodized turned mechanical parts obtained using the method of the invention have, in particular, advantageous roughness and excellent corrosion resistance and can be used, in particular, as brake pistons or gearbox elements.
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机译:本发明涉及一种机械零件的制造方法,该方法包括以下连续步骤:铸造具有0.4-3.0Si的组成(以重量%计)的铝合金坯; 0.6-2.0毫克; 0.20-1.0铜; 0.15-1.8 Fe; Mn <0.5; Ni <1; Ti <0.15;铬<0.35; Bi <0.8;铅<0.4; Zr <0.04;其他元素各<0.05,总<0.15,其余为铝;坯料均质化;坯料的挤压以获得挤压的产品;在挤压加热时淬火;可选的冷变形和/或矫直,通常是通过拉伸和/或拉伸和/或固化挤出产品来进行的;回火挤出产品的可选冷变形,通常通过拉伸进行;机加工所得的挤出产品以获得车削的机械零件;可选的成形机械零件形状;使用包含100至250 g / l硫酸,10至30 g / l草酸和5至30 g / l至少一种溶液的溶液在15至40℃的温度下对所得的机械零件进行阳极氧化多元醇。使用本发明的方法获得的阳极氧化的车削机械零件尤其具有有利的粗糙度和优异的耐腐蚀性,并且尤其可以用作制动活塞或变速箱元件。
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