Forming and processing method of titanium alloy high-pressure seamless gas cylinder for ships

A technology of seamless gas cylinder and processing method, which is applied in metal processing equipment, applications, household appliances and other directions, can solve the problems of inability to guarantee the metallographic structure and performance of α+β type titanium alloy, and achieves good fatigue resistance and manufacturing. The effect of low cost and high material utilization

Active Publication Date: 2021-01-22
湖北三江航天江北机械工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For TC4 titanium alloy high-pressure gas cylinders, the high-temperature spinning causes the structural transformation of the material, forming a β-phase structure that cannot be reversed by heat treatment, which cannot guarantee the metallographic structure and properties of the α+β-type titanium alloy.

Method used

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  • Forming and processing method of titanium alloy high-pressure seamless gas cylinder for ships
  • Forming and processing method of titanium alloy high-pressure seamless gas cylinder for ships
  • Forming and processing method of titanium alloy high-pressure seamless gas cylinder for ships

Examples

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Effect test

Embodiment 1

[0067] For a TC4 titanium alloy high-pressure seamless gas cylinder for a certain type of ship, its inner diameter d1 is 200mm, the length of the cylindrical section L4 is 500mm, and the wall thickness t1 is 4mm. The forming and processing methods of the titanium alloy high-pressure seamless gas cylinder for ships are specific as follows:

[0068] 1) forging blank forging

[0069] The titanium alloy round steel billet is forged into a forging billet. In order to improve the material utilization rate and reduce the material cost, one end of the outer circular surface of the forging billet is a stepped surface. Correspondingly, one end of the inner surface of the forging billet is a circular table surface; the other end of the forging billet is There is a machining allowance L1=2mm for strong spinning on the periphery of the forging, and the forging temperature of the forging blank is 800°C.

[0070] 2) Power spinning blank processing

[0071] The forging blank is numerically ...

Embodiment 2

[0092] For a TC4 titanium alloy high-pressure seamless gas cylinder for a certain type of ship, its inner diameter d1 is 300mm, the length of the cylindrical section L4 is 700mm, and the wall thickness t1 is 6mm. The forming and processing methods of the titanium alloy high-pressure seamless gas cylinder for ships are specific as follows:

[0093] 1) forging blank forging

[0094] The titanium alloy round steel billet is forged into a forging billet. In order to improve the material utilization rate and reduce the material cost, one end of the outer circular surface of the forging billet is a stepped surface. Correspondingly, one end of the inner surface of the forging billet is a circular table surface; the other end of the forging billet is There is a machining allowance L1=3.5mm for strong spinning on the periphery of the forging, and the forging temperature of the forging blank is 880 °C.

[0095] 2) Power spinning blank processing

[0096] The forging blank is numerical...

Embodiment 3

[0117] For a TC4 titanium alloy high-pressure seamless gas cylinder for a certain type of ship, its inner diameter d1 is 400mm, the length of the cylindrical section L4 is 1000mm, and the wall thickness t1 is 8mm. The forming and processing methods of the titanium alloy high-pressure seamless gas cylinder for ships are specific as follows:

[0118] 1) forging blank forging

[0119] The titanium alloy round steel billet is forged into a forging billet. In order to improve the material utilization rate and reduce the material cost, one end of the outer circular surface of the forging billet is a stepped surface. Correspondingly, one end of the inner surface of the forging billet is a circular table surface; the other end of the forging billet is There is a machining allowance L1=5mm for strong spinning on the periphery of the forging, and the forging temperature of the forging blank is 960°C.

[0120] 2) Power spinning blank processing

[0121] The forging blank is numerically...

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Abstract

The invention discloses a forming and processing method of a titanium alloy high-pressure seamless gas cylinder for ships. The method comprises the following steps: forging a forging blank at the forging temperature of 800-960 DEG C; performing powerful spinning on the blank to machine a cylinder section at the heating temperature of 550-750 DEG C; performing powerful spinning to form the cylindersection; performing core-mold-free hot spinning to form a head end socket; and performing seamless gas cylinder solid solution, aging heat treatment and bottle opening machining. The product is goodin quality and has no welding defects and bottom end socket incomplete fusion defects of a traditional method; the product is high in reliability and fatigue resistance and long in service life; and the material utilization rate is high, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to the technical field of processing titanium alloy products, in particular to a method for forming and processing titanium alloy high-pressure seamless gas cylinders for ships. Background technique [0002] With the rapid development of modern marine defense technology, large ships are widely used in marine defense equipment, and corresponding equipment such as titanium alloy high-pressure seamless fire-fighting gas cylinders for ships has a large number of application requirements. Seamless gas cylinders have been widely used in fuel supply, fire fighting, and cleaning due to their convenience, safety, refillability, and high pressure bearing. Commonly used steel gas cylinder materials have a high density. To improve the pressure bearing capacity of the gas cylinder, it can only be achieved by increasing the wall thickness, but this can only be achieved to a limited extent, and it will greatly increase the weight of the gas cyli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/14B21J5/00B21D51/38B21D51/44
CPCB21D22/14B21J5/002B21D51/38B21D51/44
Inventor 马旷韩庆波康斌唐旭亮吴钦
Owner 湖北三江航天江北机械工程有限公司
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