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2. 发明公开

EP3176274A1 ALUMINIUM ALLOY EXTRUDED MATERIAL WITH SUPERIOR MACHINABILITY AND PRODUCTION METHOD THEREFOR 有权
标题翻译： STRAND压制材料从铝合金中优良的机械加工及其制造方法
公开(公告)号：EP3176274A1
公开(公告)日：2017-06-07
申请号：EP14898493.3
申请日：2014-12-26
申请人： Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
发明人： MIYATA, Yukimasa , YOSHIHARA, Shinji , SHIKAMA, Takahiro
IPC分类号： C22C21/02 , C22F1/043 , C22F1/00
CPC分类号： C22C21/02 , B21C23/002 , C22F1/00 , C22F1/043
摘要： To obtain an Al-Mg-Si based aluminum alloy extruded material with a smooth surface and no burning without inhibiting the productivity. An aluminum alloy billet includes: Si: 2.0 to 6.0% by mass; Mg: 0.3 to 1.2% by mass; and Ti: 0.01 to 0.2% by mass, a Fe content being restricted to 0.2% or less by mass, with the balance being Al and inevitable impurities. The aluminum alloy billet is subjected to a homogenization treatment by keeping at 500 to 550°C for 4 to 15 hours. The billet is forcibly cooled to 250°C or lower at an average cooling rate of 50°C/hr or higher. Then, the billet is subjected to hot-extruding at an extrusion rate of 3 to 10 m/min by being heating at 450 to 500°C. The extruded material is forcibly cooled at an average cooling rate of 50°C/sec or higher and then subjected to an aging treatment. The extruded material can be manufactured that has its surface having a ten-point average roughness Rz of 80 µm or less.
摘要翻译：要获得的Al-Mg-Si系铝合金挤压材料具有光滑的表面和没有生产率抑制没有燃烧。的铝合金坯，包括：硅：2.0〜6.0质量％; 镁：0.3〜1.2质量％; 和Ti：0.01〜0.2质量％，Fe含量为以质量计限定为0.2％或更少，且余量为Al和不可避免的杂质。铝合金坯是通过在500到保持550℃4到15小时进行均质化处理。将钢坯在以50℃/小时或更高的平均冷却速度强制冷却至250℃或更低。然后，将钢坯通过被加热在450进行热挤出以3挤出的速率，以10米/分钟至500℃ 将挤出的材料在50℃/秒或更高的平均冷却速度强制冷却，然后进行时效处理。将挤出的材料可以制造没有包括具有十点平均粗糙度Rz为80微米或更小的表面。

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