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A kind of preparation technology and product of liquefied petroleum gas bottle top cover

A preparation process and technology of petroleum gas cylinders, applied in the field of production and manufacturing of liquefied petroleum gas cylinders, can solve problems such as explosion and gas leakage

Active Publication Date: 2021-05-11
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 two circular welds. The welds are often the weak point of the pressure vessel, resulting in defects during use. Certain risk of air leakage and explosion

Method used

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  • A kind of preparation technology and product of liquefied petroleum gas bottle top cover
  • A kind of preparation technology and product of liquefied petroleum gas bottle top cover
  • A kind of preparation technology and product of liquefied petroleum gas bottle top cover

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: 1) According to the size of the cover body 1, the aluminum alloy round bar ingot is cut into the billet 8 of the required thickness in advance, and the billet 8 is placed in a heating furnace with a temperature of 280~450°C and heated for 30~ 40min;

[0032] 2) Apply lubricant to the heated billet 8, the cavity 5 of the extrusion die 4 and the lower pressure head 7 respectively, and place the billet 8 in the cavity 5 of the extrusion die 4, and the height of the cavity 5 A positive number h must be greater than the height of the cover body 1 at least 80~140mm, start the upper pressing head 6 of the press to press the billet 8 downward at a speed of 3mm / s and a pressure of 1500KN, and the upper pressing head 6 presses the billet downward The pressure change time curve of 8 is attached image 3 As shown, make the blank 8 contact with the lower ram 7 and fill the cavity 5, then adjust the upper ram 6 to continue pressing down the blank 8 at a speed of 1mm / s and...

Embodiment 2

[0035] Embodiment 2: 1) According to the size of the cover body 1, the aluminum alloy round bar ingot is cut into the billet 8 of the required thickness in advance, and the billet 8 is put into a heating furnace with a temperature of 280~450°C and heated for 30~ 40min;

[0036] 2) Apply lubricant to the heated billet 8, the cavity 5 of the extrusion die 4 and the lower pressure head 7 respectively, and place the billet 8 in the cavity 5 of the extrusion die 4, and the height of the cavity 5 If it is a positive number, h must be greater than the height of the cover body 1 by at least 80~140mm. Start the upper pressing head 6 of the press to press the billet 8 downward at a speed of 4mm / s and a pressure of 1562.5KN, and the upper pressing head 6 will press downward. The pressure change time curve of billet 8 is as attached image 3 As shown, make the billet 8 contact with the lower ram 7 and fill the cavity 5, then adjust the upper ram 6 to continue pressing down the billet 8 a...

Embodiment 3

[0039] Example 3: 1) According to the size of the cover body 1, the aluminum alloy round bar ingot is cut into a billet 8 of required thickness in advance, and the billet 8 is placed in a heating furnace with a temperature of 280~450°C for heating for 30~ 40min;

[0040] 2) Apply lubricant to the heated billet 8, the cavity 5 of the extrusion die 4 and the lower pressure head 7 respectively, and place the billet 8 in the cavity 5 of the extrusion die 4, and the height of the cavity 5 If it is a positive number, h must be greater than the height of the cover body 1 by at least 80~140mm, start the upper pressing head 6 of the press to press down the billet 8 at a speed of 5mm / s and a pressure of 1625KN, and the upper pressing head 6 presses down the billet The pressure change time curve of 8 is attached image 3 As shown, make the blank 8 contact with the lower ram 7 and fill the cavity 5, then adjust the upper ram 6 to continue pressing down the blank 8 at a speed of 3mm / s and...

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Abstract

The invention discloses a preparation process and a product of the upper cover of a liquefied petroleum gas bottle. The preparation process of the upper cover of the liquefied petroleum gas bottle includes A, blank pretreatment, B, blank extrusion molding and C, cover body rough blank trimming treatment. The upper cover of the liquefied petroleum gas cylinder includes a cover body and a valve seat, the cover body and the valve seat are made by extrusion, the cover body and the valve seat are integrally formed, and a through hole is provided in the center of the valve seat Threads are provided on the through holes. In the present invention, the valve seat and the upper cover are arranged in an integrated structure, which avoids the welding process of the traditional gas cylinder, reduces the number and length of the welding seams of the whole gas cylinder, and improves the use safety of the gas cylinder; , because there is no relative sliding between the metal material and the inner wall of the extrusion cylinder, the metal flow is uniform during the extrusion process. Compared with the traditional stamping method, the parts prepared by the traditional stamping method have higher dimensional accuracy and a tighter structure; compared with the existing technology, the manufacturing process is reduced, and the production is improved. Improve processing efficiency and reduce production costs.

Description

technical field [0001] The invention belongs to the technical field of production and manufacture of liquefied petroleum gas cylinders, and in particular relates to a preparation process and a product of an upper cover of a liquefied petroleum gas cylinder capable of improving production efficiency. 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 two circular welds. The welds are often the weak point of the pressure vessel, resulting in defects during use. There is a certain risk of air leakage and explosion. [0003] Therefore, it is the key to solve the problem to develop the novel gas cylinder that a kind of valve se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00F17C13/06
CPCB23P15/00F17C13/06F17C2205/0311F17C2223/0153
Inventor 胥福顺包崇军岳有成鲁伟陈越谭国寅孙彦华李恒
Owner KUNMING METALLURGY INST
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