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Lining half casing blank die forging forming method for recombination pressure container

A pressure vessel and forming method technology, which is applied in the field of composite pressure vessel lined semi-shell blank die forging, can solve the problems of difficulty in starting and high cost, and achieve the effects of saving mold costs, preventing wrinkles, and increasing rigidity

Inactive Publication Date: 2007-02-07
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

However, using this method to develop a large-volume composite pressure vessel lining usually requires giant press equipment (taking a 65-liter spherical lining as an example, a press of about 7,000 tons is required) and molds to forge the half-shell blank of the lining , so the cost of initial investment in research and development is extremely high, and it is difficult to start

Method used

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  • Lining half casing blank die forging forming method for recombination pressure container
  • Lining half casing blank die forging forming method for recombination pressure container

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Embodiment Construction

[0022] As shown in Figures 2a-e, a method for forging a composite pressure vessel lining half-shell blank according to the present invention includes:

[0023] 1. A die and at least two punches with different shapes and diameters. The diameter of the die in this example is 467 mm, the depth is 550 mm, the number of punches is 4, and the punch pressure in this embodiment is 900 tons;

[0024] 2. First install the female die and a punch 6 on the press, apply lubricant, preheat to a certain temperature, then take out the metal blank (aluminum in this embodiment) heated to the forming temperature from the heating furnace, put Put it into the female mold and align it. In this embodiment, oily graphite is used as the lubricant, and the preheating temperature of the die and a punch is about 250°C;

[0025] 3. Press a punch into the billet, then lift it up, take out the billet and return it to the furnace for heat preservation, and complete the first deformation. The diameter of the ...

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Abstract

The invention relates to a method for molding the linear semi-frame blank of composite pressure container, wherein it uses one concave mould and at least two punch channels with different shapes and diameters, to extrude; each punch has same function area on the blank; the first and second channels are processed in similar temperature on the blank; after the third channel, first reducing the temperature of bottom. And it can use small compressor to mold the liner semi-frame blank of composite pressure container with large capacity, to save the cost.

Description

Technical field: [0001] The invention relates to a pressure vessel manufacturing technology, in particular to a method for forming a composite pressure vessel inner liner semi-shell blank by die forging. technical background: [0002] Composite pressure vessels have been widely used in aerospace, aviation, military, medical, mountaineering, chemical, coal and other fields. Due to the characteristics of light weight and high performance of composite pressure vessels, composite pressure vessels have been used to replace conventional metal pressure vessels in space launches in the world, which greatly reduces the launch cost of space vehicles. Large-volume composite pressure vessels are very obvious for improving the safety and reliability of large aircraft structures such as space shuttles and space stations, and reducing structural weight, and they cannot be replaced by small-volume composite pressure vessels. [0003] Composite pressure vessel lining works under plastic str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/02B21K21/02
Inventor 郝传勇李正林毛先锋
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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