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Composite material pressure container with large size, super thin metal inner lining and its producing method

A manufacturing method and ultra-thin metal technology, which are applied in pressure vessels, fixed-capacity gas storage tanks, mechanical equipment, etc., can solve the problems of inability to process pressure vessels, and the weight of all-metal pressure vessels is large, and achieve light weight, simple structure, low cost effect

Inactive Publication Date: 2007-10-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of heavy weight in the use of all-metal pressure vessels in aircraft, and the use of existing technology can only process small-sized carbon fiber / epoxy composite material pressure vessels with a metal lining thickness of about 2.5mm , and the problem that the pressure vessel with a large size and an ultra-thin metal lining cannot be processed, thus providing a manufacturing method for a composite material pressure vessel with a large size and an ultra-thin metal lining

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  • Composite material pressure container with large size, super thin metal inner lining and its producing method

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specific Embodiment approach 1

[0006] Specific Embodiment 1: This embodiment is described in conjunction with FIG. 1. The large-size, ultra-thin metal-lined composite pressure vessel of this embodiment is composed of an inner liner 1, a left flange 2, a right flange 3 and carbon fiber composite materials. layer 4; the left flange 2 is welded with an inert gas on the left head 1-2 at the left end of the central axis of the inner liner 1, and the right head 1-3 at the right end of the central axis of the inner liner 1 is welded with an inert gas The right flange 3, the outer surface of the inner lining 1 is wound with a carbon fiber composite material layer 4, and the outer surface of the inner lining 1 is bonded to the carbon fiber composite material layer 4; the thickness δ of the inner lining 1 is 0.5-1.8 mm, The diameter Φ of the inner lining 1 is 700-1000mm; the length L of the inner lining 1 is 1900-2500mm; the inner lining 1 is made of aluminum-magnesium alloy thin slab or pure aluminum thin slab; the l...

specific Embodiment approach 2

[0007] Specific embodiment two: the manufacturing method of the composite material pressure vessel of large-scale, ultra-thin metal liner of this embodiment, the outer surface of inner liner 1 is wound the carbon fiber composite material layer 4 of impregnation; The manufacturing method of inner liner 1 is by The following steps are completed: a. Spinning of the left head 1-2 and the right head 1-3: put the aluminum-magnesium alloy thin slab or pure aluminum thin slab with a thickness δ of 0.5 to 1.8mm on the mandrel for spinning , the spinning speed is 200-650r / min, the feed rate is 0.3-0.7mm / r, and the left head 1-2 and the right head 1-3 with a diameter of Φ700-1000mm are produced by spinning; b. Heat treatment: The left head 1-2 and the right head 1-3 formed by spinning in step a are subjected to recrystallization annealing treatment respectively, and the recrystallization temperature is 390-420°C, and cooled to room temperature with the furnace; The left head 1-2 and the ...

specific Embodiment approach 3

[0008]Embodiment 3: The difference between this embodiment and Embodiment 2 is that in the manufacturing method of the inner liner 1 in this embodiment, in step a, an aluminum-magnesium alloy thin slab or a pure aluminum thin slab with a thickness δ of 0.8mm is Put it on the mandrel for spinning, the spinning speed is 300r / min, the feed rate is 0.5mm / r, and spin to form the left head 1-2 and the right head 1-3 with a diameter of Φ746mm. Adopting the above technical parameters can prevent aluminum-magnesium alloy thin slabs or pure aluminum thin slabs from wrinkling during spinning.

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Abstract

The present invention relates to a kind of pressure container of composite material and its making process, and solves the technological problem of making large size pressure container with super thin metal inner lining. The inner lining is made of Al-Mg alloy or pure aluminum material, and has thickness of 0.5-1.8mm, diameter of 700-1000mm, and three-point circular right and left end plates. The inner lining is made through five steps including: spinning the right and left end plates, heat treatment, mechanical machining, welding the tube body and welding the end plates, and overall welding. The present invention makes it possible to make pressure container of composite material and with light weight, high air tightness, high strength and large size.

Description

Technical field: [0001] The invention relates to a manufacturing method of a composite material pressure vessel, in particular to a manufacturing method of a composite material pressure vessel with a large size and an ultra-thin metal inner lining. Background technique: [0002] In the aerospace field, the weight of an aircraft is a very important indicator for evaluating the overall performance of the aircraft. Before the 1960s, most of the pressure vessels used in aircraft were traditional all-metal vessels, which can well solve the leakage problem of high-pressure liquid and gas. Limited by the performance of the material itself, the weight of the all-metal container is far from reaching the "lightweight" standard. In the mid-1980s, high-performance carbon fiber was produced, which has a very high specific strength and is suitable for the production of light weight and high strength. pressure vessel. However, due to the high permeability of carbon fiber composite lamina...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17C1/00
Inventor 赫晓东王荣国苏忠华刘文博苏钝
Owner HARBIN INST OF TECH