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通过对国产０８Ａｌ钢板试样进行预拉伸成形试验，并研究试件应变分布及对制件抗凹陷刚性的影响，从而为采用张力拉伸成形法成形以提高汽车覆盖件产品质量提供了有关技术依据。
Through the pre-stretch forming test of the domestic 08Al steel samples and the study of the strain distribution of the specimens and their influence on the dent-resistant rigidity of the parts, the related technologies are provided for forming the product quality by using the tension stretch forming method in accordance with.