Carbon fiber composite high pressure gas cylinder manufacturing method

【Patent name】 Method for manufacturing carbon fiber composite high-pressure gas cylinders 【Applicant】 Harbin Institute of Technology [Inventor] He Xiaodong; Wang Rongguo; Su Zhonghua; Liu Wenbo; Su Lun[Main applicant address] 150001 Nangang District, Harbin, Heilongjiang Province No. 92, Dazhi Street [Application Number] 200510089227.9
【 Application Date 】 2005.07.04
【Approval Announcement No.】 1749632
【 Validation announcement date 】 2006.03.22
[Main classification number] F17C1/00(2006.01)I
[Category] F17C1/00(2006.01)I
[original division number] 200510010152.0
【Sovereignty Items】 1. A method of manufacturing high-pressure cylinders made of carbon fiber composite materials, including the production of a metal liner (1), the wrapping of a carbon fiber composite material layer (2) outside the metal liner (1), and the curing process. The preparation process of the metal liner (1) includes the following five steps in sequence: a. Spin-spinning head (1-1): The spinning temperature of the head (1-1) is 430-530°C. Spinning speed is 200～650rpm/min, feeding amount is 0.3～0.7mm/rotation; after the forming head (1-1) is formed, it is stretched on a 500ton double-acting punching stretcher (1-2) Shaped into a half metal liner (1); b recrystallization annealing: recrystallization temperature of 700 °C ~ 930 °C, heat 20 ~ 150 minutes, and then do not exceed 50 °C / min speed to the ambient temperature; c Machining: The oxide material produced during machining to the previous process is completely removed; d. End welding: The prepared head (1-1) and the end (3) are welded together by a TIG welding method; e. Welded Integral: The entire metal liner (1) is obtained by welding two halves of the inner liner (1) through a ring weld together by TIG welding.
[Instructions CD-ROM] D0612-1
【Abstracts】 The manufacturing method of carbon fiber composite high-pressure gas cylinders relates to a method for manufacturing a high-pressure gas cylinder of filament wound composite materials. In view of the existing high-pressure gas cylinder manufacturing process, high-pressure gas cylinders have disadvantages of heavy weight, low strength, high cost, and poor airtightness. The method for manufacturing a high-pressure gas cylinder of carbon fiber composite material of the present invention includes manufacturing a metal inner liner (1). A carbon fiber composite material layer (2) and a curing process are wound on the outer surface of the metal inner liner (1), and the preparation process of the metal innerliner (1) comprises the following five steps in sequence: a. Spin-spinning head (1- 1); b. Recrystallization annealing treatment; c. Mechanical processing; d. End welding; e. Welding overall. With the method of the present invention, a high-pressure gas cylinder of carbon fiber composite material with light weight, good air tightness, high strength, and low cost can be manufactured.
【 Agency 】 Harbin Songhuajiang Patent & Trademark Office 【Attendant】 Zhang Wei

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