前言铝合金锻件重量轻、强度高,而且具有很高的可靠性,因而它作为强度部件得到了广泛的使用。尽管皆统称为锻造,但其生产技术是多样的,用途也各不相同。特别是冷锻,它们不仅仅是区别于锻造温度在再结晶温度以下还是以上,而且在生产工艺、模具构造、锻造设备以及用途等方面,至今都各有独特的发展。 Preface Aluminum alloy forgings are light weight, high strength, and have high reliability, so it has been widely used as a strength component. Although collectively referred to as forging, but its production technology is diverse and uses different. Especially cold forging, they are not only distinguished from the forging temperature below or above the recrystallization temperature, but also have their own unique development in terms of production technology, mold construction, forging equipment and applications.