Autoclave molding process Union star packaging machinery

Autoclave process began in the 1940 s, has been widely used in the 60 s, is the second generation of composite materials for production and research and development of technology, especially in skin parts production has played a huge role, now as a mature technology is widely used. By autoclave process of composite material accounted for more than 50% of the entire composite materials production, in the field of aerospace proportion is as high as 80% above. Autoclave process has been used extensively in various composite parts manufacturer. Autoclave is the key of non-metallic composite component products production process equipment. By the vacuum system, pressure system, cooling system, central control system and form a complete set of machinery. In the curing process of composite material products, according to technology requirements, complete the products of vacuum, heating, pressure, reach the purpose of making products curing 26. Autoclave system in the process of work, can set up in the heating area and products of the relevant parts temperature measuring points, the temperature distribution can be controlled by the central system to collect, display, and adjust the heating and cooling rate, according to the requirements of process to ensure the quality of the solidified products. For important products, during solidification, vats with inert gas protection, in order to prevent the products in the process of curing the combustible volatiles escape caused the combustion or explosion. Is autoclave molding composite material wool embryo, the honeycomb sandwich structure or rubber sealing structure with vacuum bag on the mould, in cooking, in a vacuum ( Or vacuum) Condition, temperature, pressure, heat preservation, cooling and unloading process, make the necessary requirements of one of the molding methods of advanced composite materials and its components. With autoclave molding composite material component more application in the aerospace field, the main bearing and the bearing structure. The molding process of mould is simple, compact, small size tolerance, low void fraction of fabrication. But this method, auxiliary materials more power consumption and high cost. Autoclave moulding plate composite curing system is the key to the vacuum autoclave molding process. Autoclave process more resin impregnated flat fabric composites molding parts. Due to the resin impregnation flat fabric can be done using the solvent method and melt method, so this method can meet the high viscosity of high performance resin matrix composites forming, but for the three-dimensional fabric reinforced high performance resin matrix composites forming, autoclave process due to the problem of resin impregnated cannot be implemented. In recent years, the autoclave molding method is regarded as & other; High capital & throughout; Manufacturing method of composite structures, and excluded & other; Low capital method & throughout; Concept system, the resin transfer method and the formation of new and old pair potential, seems autoclave molding method should be gone out. In fact, autoclave molding method in engineering application in both the maturity and in terms of scale is the main forming method for today's composite structure, it is decided by its characteristics: 1. Tank pressure and temperature uniformity. Under the influence of their common, can meet the requirements of composite high fiber content, the composite material has high mechanical properties and relatively stable physical properties, such as the low porosity composite material structure, uniform resin content. 2. Autoclave molding method was widely applicable scope. Such as laminated structure and sandwich structure, bonding structure and sewing. Mold is relatively simple, high efficiency, especially suitable for large pieces of high performance requirements of composites molding. As for the autoclave molding method how to reduce the capital, domestic also did a lot of research work, for example, presoak material & other; Zero rubber & throughout; The implementation of the localization of auxiliary materials, curing mold structure optimization, in the form of the progress of the thermal efficiency and assembly structure into the reasonable combination of tank and justice of a test project with furnace effectively promoted in such aspects as manufacturing capital. In a certain aircraft composite structures, for example, each 1 kg composite structure, production can save manufacturing capital 1200 yuan. If presoak in manufacturing large composite material structure is expected to show to the exhibition adopts automatic folding, the production efficiency will be obvious progress, make capital will continue to decline. Therefore, as & other; High capital & throughout; Manufacturing method is not correct, the molding methods after 30 years of technology development, its integrity and maturity is undoubtedly for the application of composite materials in large aircraft structure fast track has the vital significance.