公开(公告)号：US20120327632A1

公开(公告)日：2012-12-27

申请号：US13227015

申请日：2011-09-07

申请人： Sang-Joon PARK ,  Bo-Hyun HEO

发明人： Sang-Joon PARK ,  Bo-Hyun HEO

IPC分类号： G09F13/04 ,  B21B27/06

CPC分类号： G06F1/1626

摘要： Bottom chassis for a tablet-type mobile display having a thickness of 0.2 mm, light weight and high strength by controlling the alloy composition and process condition.A method for manufacturing the bottom chassis comprises: (a) homogenizing a slab material by heating, the slab material having at most 0.3 wt % silicone, at most 0.4 wt % iron, at most 0.1 wt % copper, 0.15˜0.2 wt % manganese, 2.5˜3.5 wt % magnesium, 0.15˜0.35 wt % chromium, and at most 0.1 wt % zinc, the balance being impurities and aluminum; (b) subjecting the homogenized material to hot-rolling to thickness of 7.5±0.5 mm followed by cooling; (c) subjecting the hot-rolled and cooled material to a 1st cold-rolling to thickness of 2.5±0.5 mm followed by annealing; (d) subjecting the cold-rolled and annealed material to a finishing cold-rolling to thickness of 0.2±0.05 mm; (e) tempering the finishing cold-rolled material; and (f) processing the tempered material to the final shape.

摘要翻译： 通过控制合金组成和工艺条件，厚度为0.2mm，重量轻，强度高的片式移动式显示器的底盘。 一种制造底盘的方法包括：（a）通过加热均质板坯材料，所述板坯材料具有至多0.3重量％的硅氧烷，至多0.4重量％的铁，至多0.1重量％的铜，0.15至0.2重量％的锰 ，2.5〜3.5重量％的镁，0.15〜0.35重量％的铬和至多0.1重量％的锌，余量为杂质和铝; （b）使均质材料热轧至厚度为7.5±0.5mm，然后冷却; （c）对热轧和冷却的材料进行第一次冷轧，厚度为2.5±0.5mm，然后退火; （d）对冷轧和退火材料进行精轧冷轧，厚度为0.2±0.05mm; （e）回火整理冷轧材料; 和（f）将回火材料加工成最终形状。