PROCESS FOR MANUFACTURING ARTICLES IN CARBON FIBER AND ARTICLE MANUFACTURED WITH THIS PROCESS

摘要

The invention relates to a heat compression molding process for the manufacturing of composite material articles, the process comprising the steps of i) providing a mold (20) in which the negative shape (31, 32) of an article (30) to be manufactured is formed; ii) inserting into said mold (20) an SMC semi-finished product (10) comprising one or more sheets of composite material comprising a matrix of a heat-hardening resin and carbon fibers, the mold being pre-heated at a temperature suitable to allow the cure of said heat-hardening resin; iii) closing the mold (20) and carrying out a compression cycle in an autoclave according to a predefined time-pressure law; and iv) extracting the article (30), wherein the amount of SMC semi-finished product (10) inserted in the mold (20) is calculated by weighing on the basis of the volume of the article (30) to be manufactured. The size of the surfaces of the SMC semi-finished product (10) intended to contact the surfaces of the shape (31, 32) are calculated so as to cover said surfaces in a percentage comprised between 70 to 99%, in particular higher than 80% and less than or equal to 99%. Thanks to these characteristics it is possible to obtain manufactured articles substantially free from surface defects and suitable for both structural and aesthetic uses.