The large-sized tube-shaped carbon fiber composite material bearing beam is the first large-sized domestic high-mode carbon fiber composite material tube-shaped bearing beam that has passed the non-destructive testing in China. It is a full-carbon fiber reinforced resin-based composite structure. The pipe wall is provided with local reinforced areas along the axial direction and the circumferential direction, and the reinforced areas are symmetrically distributed along the center of the beam.
This product selects domestic high-modulus carbon fiber as the raw material, and innovatively uses the prepreg female mold integral molding process. After inspection, the product has met the design requirements in terms of appearance quality, straightness, contour, dimensional tolerances, and internal quality, which perfectly meets the structural design requirements of light, high-strength, and high-modular solar drones.
Innovation:
The negative mold forming process realizes a one-time overall molding of the large-sized tubular composite structure;
The prepreg paving design scheme does not require traditional coiling or winding equipment to achieve manual paving of tubular composite structures;
Molding tooling design and packaging scheme to ensure pressure transmission and ensure molding quality;
The molding tooling and demolding scheme ensure non-destructive demolding and ensure product performance.
At present, this technology product is applying for a patent for large-sized tubular composite material bearing beam forming technology, and has been applied to the central wing main beam structure of a certain type of solar drone.
About JSHY Composite Materials Technology Group
JSHY Composite Materials Technology Group was established in 2001, focusing on research and development, production and sales of products in the field of high-performance structural composite materials and thermal insulation materials.
The production facilities include: a 36200㎡ commercial aircraft composite material structure workshop, a 15000㎡ thermal insulation material workshop, 50 sets of equipment supporting the development of COMAC's C919 project, and PDM / ERP / MES integrated information management system.
JSHY is located in the research and development and industrialization of composite materials products in the field of civil aviation. It has passed the AS9100 quality system certification, and has obtained three NADCAP certifications including composite materials, non-destructive testing and spray painting processes. Possesses professional capabilities in composite material parts forming process, tooling mold design, CNC machining, component assembly, product inspection, non-destructive testing and other professional fields. After many years of research and research, Haiying Special Material Company has mastered the core technology of soft mold forming with its own characteristics. In the "high temperature resistant carbon fiber reinforced composite material forming technology", "honeycomb (foam) sandwich composite material forming technology" and "low "Cost rubber airbag integral molding technology" has strong strength in technology, and its achievements have formed more than 20 patents. At the same time, the company has undertaken the research and development tasks of composite parts and vertical tail composite parts for the rear fuselage, aileron, and front fuselage of the C919 project, and has become an important supplier of composite products for the C919 project.
product description
The rear section of the rear fuselage is generally a barrel structure, and the aerodynamic appearance surface is hyperbolic. The main body is a composite material structure, including 37 hat-shaped reinforced wall panels, APU firewall, C-shaped frame, flat tail longitudinal reinforcement beam, honeycomb maintenance cover and other 37 composite materials, weighing 106kg, which is the structure of the C919 passenger aircraft body. An important part of. The vertical tail siding is a typical I-shaped reinforced siding. There are many thickened areas in the skin. The thickness ranges from 1.8mm to 5.4mm. The siding includes 10 long beams of varying lengths. The curing process is co-adhesive. Bonding molding, that is, the cured stringer is co-glued with the wet skin formed by the automatic tape spreader.
After undertaking the C919 project work package, the company actively carried out process technology research and formed a composite material co-curing molding technology with independent intellectual property rights. The composite co-curing molding technology is an important development direction of current carbon fiber composite material molding. Effectively reduce component weight while improving product mechanical properties and stability.