盒形结构复合材料零件厚度控制研究

Research on thickness control of box-shaped structure composite parts

结合某新型民用飞机尾翼部分小尺寸、少铺层盒形结构复合材料零件的应用,通过不同铺层的平板试验,讨论了零件厚度特性,研究了不同结构压力垫对零件厚度、表面质量、内部质量的影响,得出了压力垫选型结论。采取了边缘树脂封胶、厚度控制等工艺措施,成功制造合格试件,最后对零件外形进行检测,确定了1.35°修型角度的殷钢模具,可有效补偿铺层厚度为6层及牌号为CYCOM 970/PWC T3003K环氧树脂增强的碳纤维预浸料制造的盒形结构复合材料零件的回弹变形。

Combined with the application of a new type of civil aircraft tail part with small size and few layers of box-shaped structure composite materials,the thickness characteristics of the parts were discussed through plate tests with different layers.The influence of pressure pads with different structures on the thickness,surface quality,and internal quality of the parts was studied,and the conclusion of pressure pad selection was obtained.Process measures such as sealant and thickness control were adopted to successfully manufacture qualified specimens.Finally,the part shape detection was completed,and it was determined that the Invar alloy tooling with 1.35°modification angle could effectively compensate the springback deformation of the box structure composite parts made of CYCOM 970/PWC T3003K epoxy resin reinforced carbon fiber prepreg with a thickness of 6 layers.