冲压成形性能与冲压板料选用——修订国标《金属薄板成形性能与试验方法》的技术说明(3)

Formability and selection of sheet metals for press forming——Technical illustration on revising GB/T15825《Sheet metal formability and test metheds》(Part 3)

论述板料本征力学性能与冲压成形性能的相关性,辨析通用冲压成形和复杂冲压成形技术的特点,阐述通用冲压成形和复杂冲压成形生产中的选材技术要求以及不同的技术方法,提出应用灰色关联决策理论进行冲压选材的新观点,并简述其选材的方法步骤,为GB/T15825在冲压选材中的技术应用提供了方法性参考。

The relationship between the natural mechanics properties and formability of sheet metals was explained. The technical features of the general and complex forming processes for sheet metals were clarified. The methods of se lecting sheet metal were discussed for the general and complex forming process. The new method of using grey incidence decision-making theory to select sheet metals was proposed for press forming. As an example of this method, the calculating steps were briefly illustrated how to select sheet metals for an autobody-workpiece forming, which can be used as a methodological reference of selecting sheet metal in press forming based on the GB/T 15825 《 Sheet metal formability and test methods 》.