▎ 摘　　要

NOVELTY - The utility model claims a high-strength graphene material cover base plate, comprising a cushion plate paved on the bottom of the printed circuit board and a cover plate paved on the top part of the printed circuit board; the cover plate comprises an aluminium plate layer; the upper surface of the aluminium plate layer is coated with graphene coating; the lower surface of the aluminium plate layer is adhered with a middle density fibre plate layer; the cushion plate comprises a high density fibre plate layer and a graphite paper layer; the high density fibre plate layer and the graphite paper layer are connected by adhesive layer. adding graphene coating and medium density fibre plate in the cover plate structure, reinforcing the deformation resistance on the basis of the original aluminium cover plate, so as to improve the drilling quality and precision, at the same time, the cover plate has a certain hardness can effectively prevent the drilling burr. adding graphite paper layer in the cushion plate structure greatly improves the hardness and heat conducting performance of the cushion plate, which greatly improves the drilling quality.