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Preparation method of weldless type aluminum alloy liquefied petroleum gas cylinder

A technology of liquefied petroleum gas and aluminum alloy, which is applied in mechanical equipment, fixed-capacity gas storage tanks, gas/liquid distribution and storage, etc., can solve problems such as explosion and air leakage, prolong service life, and have reasonable bottle structure design , the effect of excellent performance

Inactive Publication Date: 2018-11-02
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional liquefied petroleum gas cylinder body is welded by the valve seat, upper body and lower body. This structure has several circular welds. The welds are often the weak point of the pressure vessel, resulting in some problems during use. Gas Leakage and Explosion Risk

Method used

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  • Preparation method of weldless type aluminum alloy liquefied petroleum gas cylinder
  • Preparation method of weldless type aluminum alloy liquefied petroleum gas cylinder

Examples

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preparation example Construction

[0022] as attached figure 1 The preparation method of the shown weldless aluminum alloy liquefied petroleum gas cylinder comprises the following steps:

[0023] A. Billet selection: according to the size of the gas cylinder body, the aluminum alloy extruded round bar ingot is cut to the required thickness in advance to become a disc-shaped billet 5;

[0024] B, billet extrusion: after heating the billet 5, put it into the mold cavity and extrude it through the extrusion head to form the rough bottle body 6 of U-shaped structure, and take out the rough bottle body 6 from the mold cavity;

[0025] C. Closure of the rough blank 6 of the bottle body: put the rough blank 6 of the bottle body into the spinning machine for closing to become a semi-finished gas cylinder 1;

[0026] D. Semi-finished product assembly: assemble the valve 2, handle 3, and base 4 on the semi-finished gas cylinder 1 to become a finished gas cylinder;

[0027] E. Finished product performance test: carry ou...

Embodiment 1

[0041] Example 1: 1) Calculate the raw material size required for the preparation according to the size of the petroleum liquefied gas cylinder to be prepared, and cut the aluminum alloy extruded round bar billet to the required thickness to form a disc-shaped billet according to the calculated size 5 , put the blank 5 into a heating furnace with a temperature of 200°C~550°C and heat it for 30~60min;

[0042] 2) Apply lubricant to the heated billet 5, mold cavity and extrusion head respectively, and put the billet 5 into the mold cavity, lower the extrusion head at a speed of 3mm / s to extrude the billet 5, and the extrusion head The pressure is 1800KN, so that the blank 5 starts to slide and deform along the inner surface of the mold cavity. When the lower surface of the blank 5 contacts the upper surface of the concave plug at the bottom of the mold cavity, the extrusion is stopped and the extrusion is forward. End transfer to reverse extrusion;

[0043] 3) At this time, kee...

Embodiment 2

[0048]Example 2: 1) Calculate the raw material size required for the preparation according to the size of the liquefied petroleum gas cylinder to be prepared, and cut the aluminum alloy extruded round bar billet to the required thickness to form a disc-shaped billet according to the calculated size 5 , put the blank 5 into a heating furnace with a temperature of 200°C~550°C and heat it for 30~60min;

[0049] 2) Apply lubricant to the heated billet 5, mold cavity and extrusion head respectively, and put the billet 5 into the mold cavity, lower the extrusion head at a speed of 4mm / s to extrude the billet 5, and the extrusion head The pressure is 1850KN, so that the blank 5 begins to slide and deform along the inner surface of the mold cavity. When the lower surface of the blank 5 contacts the upper surface of the concave plug at the bottom of the mold cavity, the extrusion is stopped and the extrusion is forward. End transfer to reverse extrusion;

[0050] 3) At this time, keep...

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Abstract

The invention discloses a preparation method of a weldless type aluminum alloy liquefied petroleum gas cylinder. The preparation method comprises the steps of A, blank selection, B, blank extrusion, C, shell nosing on a bottle body rough blank, D, semifinished product assembly and E, finished product property detection. The weldless type aluminum alloy liquefied petroleum gas cylinder with the volume of 4.7-35.5L and the bottle body height of 190-700 mm is prepared, the weldless type aluminum alloy liquefied petroleum gas cylinder prepared by the preparation method is formed by back extrusionand thus is more compact in structure, the structural design of a bottle body is reasonable, and the weldless type aluminum alloy liquefied petroleum gas cylinder is light in weight and safe, energy-saving and environmentally friendly. Compared with a traditional liquefied petroleum gas steel cylinder, the weight reducing effect is significant, and the compression resistance is high; by use of a compact oxidation film formed on an aluminum alloy surface, a preservative effect can be achieved, and the service life is prolonged effectively; the surface does not require to be sprayed, so that theenvironmental protection effect is obvious; and the preparation method has good economic benefits and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of producing liquefied petroleum gas cylinders, and in particular relates to a method for preparing a lightweight and safe aluminum alloy liquefied petroleum gas cylinder without welds. Background technique [0002] As a common fuel, liquefied petroleum gas has quickly entered thousands of households with the advantages of convenience, speed and cleanliness. Therefore, liquefied petroleum gas cylinders have become the most widely used pressure vessels in China. The traditional liquefied petroleum gas cylinder body is welded by the valve seat, upper body and lower body. This structure has several circular welds. The welds are often the weak point of the pressure vessel, resulting in some problems during use. Risk of gas leaks and explosion. [0003] Therefore, it is the key to solve the problem to develop the novel gas cylinder that a kind of non-welded seam integral molding is set. Contents of the inventi...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00F17C1/00
Inventor 胥福顺谭国寅岳有成鲁伟包崇军李恒陈越高珺
Owner KUNMING METALLURGY INST
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