Dear Colleague,
Most of car lightweight design will apply aluminum alloy except for some expensive supercar, will use carbon fiber. Compared to traditional rolled steel, with smaller density, lighter weight and rigidity, aluminium alloy has superiority for lightweight. However, aluminum alloy is “light” as well as “expensive” because of materials and manufacturing technique cost.
除了那些价格不菲的顶尖超跑会大量运用碳纤维外，汽车轻量化设计多半都是靠大比例使用铝合金来实现的。相比传统钢材而言，铝合金的密度更小，同体积下重量更轻，并且在还能保证一定刚性，其轻量化优势明显。然而，铝合金车身除了“轻”以外，还有另一个特点就是“贵”，这个不仅仅是材料本身的成本更高，还有门槛更高的制造工艺带来的成本。
All aluminum doesn’t mean pure aluminum. All aluminum body isn’t an integral part, which will apply different kinds of materials according to stress distribution of different parts. Those materials will be connected by self-pressing rivet joint technique, laser wielding, cementing and other joining technologies. Now, the common concerns are how to reduce the aluminum body cost and how to balance the applications of different materials under current production.
“全铝”并不等于“纯铝”，另外全铝车身并非一个整体，会根据车身不同部位的受力情况分布不同种类的材料，一般会通过自冲铆钉、激光焊接、胶接等方式连接。如何在不影响安全性的前提下，降低铝合金车身成本以及如何在现有技术与生产条件下实现的不同材料使用的平衡是大家普遍关注的问题。 |
