Carbon fiber composite barrel containing metal liner and cold assembly manufacturing method of carbon fiber composite barrel

Abstract

The invention relates to a carbon fiber composite barrel containing a metal liner and a cold assembly manufacturing method of the carbon fiber composite barrel. The barrel comprises the metal liner, a metal tail pipe, a metal end pipe and a carbon fiber composite layer. The metal tail pipe and the metal end pipe are connected with the head end and the tail end of the metal liner correspondingly. The periphery of the metal liner is sleeved with the carbon fiber composite layer in a penetrating mode, and the carbon fiber composite layer tends to press the metal liner circumferentially. A sectional assembly design mode is adopted for the barrel of the structure, the weight of each section of the barrel can be lowered, and a soldier can carry the barrel conveniently. In addition, the carbon fiber composite layer has circumferential prestress on the metal liner and subjected to circumferential tensile stress, the metal line is subjected to circumferential pressure stress, the carbon fiber composite layer makes contact with the metal liner more tightly, and the pressure and load bearing capacity of the barrel is improved.

Description

technical field [0001] The invention relates to a pressure barrel structure containing metal-lined carbon fiber composite material and a corresponding manufacturing method. Background technique [0002] The development of modern military technology requires future weapons and equipment to have the characteristics of lightness, maneuverability, flexibility and quick response, so new structures and functional materials must be vigorously developed. Among them, fiber composite materials have the advantages of light weight, high strength, no rust, corrosion resistance, fatigue resistance and good designability, and are currently the most widely used type of new materials. However, the fiber composite material has poor ablation resistance and airtightness, so a layer of metal material is generally added to the inner wall of the fiber composite material launcher. It is strong and has good sealing performance, which can meet the requirements of various weapon platforms for the use...

AI Technical Summary

Problems solved by technology

[0004] One: The composite material layer wound on the outer surface of the metal lining needs to be cured at high temperature. If a thermosetting polyimide resin is used, the curing temperature is above 300 degrees. At such a high curing temperature, the metal lining expands, and the outer surface The carbon fiber composite material layer is not sensitive to temperature, and basically does not expand at high temperatures. After the thermal expansion of the metal lining, the carbon fiber composite material layer wound on the outer surface will be stretched. Gaps are generated at the interface of the metal lining, and the combination is not tight, so that the carbon fiber composite material layer cannot play the role of strengthening the circumferential strength of the barrel

[0005] Second: the modulus of the metal lining is generally 200GPa, and the yield strength is 1280MPa, while the hoop modulus of the carbon fiber (T800) composite layer is generally smaller than the modulus of the metal, generally 180GPa, and the strength is about 3000MPa, because the composite material The hoop modulus is smaller than the metal lining, so when the live ammunition is fired, the hoop stress on the composite material layer is smaller than that on the metal lining and far lower than its own strength, resulting in material waste

Images