This article elaborates on the integral forming in the autoclave of large size multi lattice structured composite
with particular emphasis on the optimistic design of overlay processing and assurance of forming pressure. It is
proved by engineering practice that the ware preforming of such frame can be realized by breaking down the overall
structure into multi technique units, in which unit overlay is first completed, followed by rest of overlay after matching
molds; and the technique of alternative use of soft and hard abrasives, pressure transmitting of soft abrasives, assurance
of frame geometrical size by hard abrasives, can achieve the integral co-curing molding. The products manufactured can
meet the designing requirements of deviation of shape and position in terms of flatness of upper and lower surface, and
its deviation of thickness, content of rubber and product quality can be also controlled within an allowable range.
