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Titanium alloy high-pressure seamless gas cylinder with large volume, and manufacturing method

The technology of a seamless gas cylinder and a manufacturing method, which is applied to the container filling method, the container discharging method, the manufacturing of the container structure, etc., can solve the problems of difficult quality control, easy defects at the weld, and low utilization rate of blanks. , to achieve the effect of improving the overall performance and safety of the structure, excellent comprehensive mechanical properties of the cylinder, good strength and impact toughness

Inactive Publication Date: 2017-12-08
LUOYANG SUNRUI SPECIAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this process method are: difficult machining, low utilization rate of blanks, long manufacturing cycle, high manufacturing cost, and relatively many welds in the product, which are prone to defects at the welds, difficult in quality control and safe to use. poor sex

Method used

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  • Titanium alloy high-pressure seamless gas cylinder with large volume, and manufacturing method
  • Titanium alloy high-pressure seamless gas cylinder with large volume, and manufacturing method
  • Titanium alloy high-pressure seamless gas cylinder with large volume, and manufacturing method

Examples

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Embodiment 1

[0039] A method for manufacturing a large-volume titanium alloy high-pressure seamless gas cylinder, comprising the following steps:

[0040] Step 1. Select Ti as the matrix according to the design size, including Al5%, Nb2.5%, Zr1%, Mo0.5% by mass percentage, and the total content of other impurity elements is not more than 0.15%. Reserve ;

[0041] Step 2. Ultrasonic flaw detection is carried out on the large-diameter titanium alloy pipe in step 1. The pipe should not have defects exceeding 5% of the designed wall thickness of the gas cylinder;

[0042] Step 3. Spinning and sealing both ends of the large-diameter titanium alloy pipe that has passed the flaw detection, to obtain a primary gas cylinder body with an ellipsoidal head at both ends, and a straight section of opening and necking at the end of the ellipsoidal head;

[0043] Step 4: Perform solution heat treatment at 950~1050°C on the body of the primary gas cylinder, so that the yield strength of the bottle body is...

Embodiment 2

[0052] A method for manufacturing a large-volume titanium alloy high-pressure seamless gas cylinder, comprising the following steps:

[0053] Step 1. Select Ti as the matrix according to the design size, including Al6.5%, Nb5%, Zr3%, Mo1.5% by mass percentage, and the total content of other impurity elements is not more than 0.15%. Reserve ;

[0054] Step 2. Ultrasonic flaw detection is carried out on the large-diameter titanium alloy pipe in step 1. The pipe should not have defects exceeding 5% of the designed wall thickness of the gas cylinder;

[0055] Step 3. Spinning and sealing both ends of the large-diameter titanium alloy pipe that has passed the flaw detection, to obtain a primary gas cylinder body with an ellipsoidal head at both ends, and a straight section of opening and necking at the end of the ellipsoidal head;

[0056] Step 4: Perform solution heat treatment at 950~1050°C on the body of the primary gas cylinder, so that the yield strength of the bottle body is...

Embodiment 3

[0065] A method for manufacturing a large-volume titanium alloy high-pressure seamless gas cylinder, comprising the following steps:

[0066] Step 1. Select Ti as the matrix according to the design size, including Al5.9%, Nb3.5%, Zr2%, Mo1% by mass percentage, and the total content of other impurity elements is not more than 0.15%. Reserve ;

[0067] Step 2. Ultrasonic flaw detection is carried out on the large-diameter titanium alloy pipe in step 1. The pipe should not have defects exceeding 5% of the designed wall thickness of the gas cylinder;

[0068] Step 3. Spinning and sealing both ends of the large-diameter titanium alloy pipe that has passed the flaw detection, to obtain a primary gas cylinder body with an ellipsoidal head at both ends, and a straight section of opening and necking at the end of the ellipsoidal head;

[0069] Step 4: Perform solution heat treatment at 950~1050°C on the body of the primary gas cylinder, so that the yield strength of the bottle body is...

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Abstract

The invention provides a titanium alloy high-pressure seamless gas cylinder with a large volume, and a manufacturing method. The titanium alloy high-pressure seamless gas cylinder with the large volume comprises a gas cylinder block, a blind end plug, an opening end plug and a washer; the gas cylinder block is made of large-caliber titanium alloy tubes, and the titanium alloy seamless tubes are based on Ti, and comprise, by mass, 5%-6.5% of Al, 2.5%-5% of Nb, 1%-3% of Zr, 0.5%-1.5% of Mo, and no more than 0.15% of impurity elements in total. The manufacturing method comprises the steps of material selection, flaw detection, molding, solid solution heat treatment, opening machining, test, polishing and assembly. The gas cylinder adopts a hot spinning and closing structure of the titanium alloy seamless tubes, and has the advantages of easy manufacturing, high structural strength, use safety and reliability.

Description

technical field [0001] The invention belongs to the technical field of high-pressure seamless gas cylinders, and relates to a large-volume titanium alloy seamless gas cylinder, in particular to a large-volume titanium alloy seamless gas cylinder for special environments such as marine corrosion. Background technique [0002] Gas cylinders have the characteristics of pressure resistance, repeatability, and easy mobility, and are widely used in aerospace, transportation, marine operations and other fields. In recent years, with the continuous advancement of science and technology, related fields have more stringent requirements on the volume-to-weight ratio and life of gas cylinders. Due to the advantages of low density, high strength, and good corrosion resistance, titanium alloys are widely used in aerospace, ocean-going ships, etc. It has been widely used in industries such as. The emergence of titanium alloy high-pressure gas cylinders solves the problems of corrosion res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C1/00F17C13/00F17C13/06B23P15/00
CPCF17C1/00B23P15/00F17C13/002F17C13/06F17C2201/0138F17C2209/21F17C2209/2172F17C2209/2181
Inventor 武春学张永峰任方杰邓春锋
Owner LUOYANG SUNRUI SPECIAL EQUIP