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Liquefied petroleum gas bottle upper cover and product thereof

A technology of petroleum gas cylinders and preparation technology, which is applied in the direction of mechanical equipment, container discharge methods, container structure installation devices, etc., which can solve the problems of gas leakage, explosion, etc., achieve uniform metal flow, reduce production costs, and improve use safety sexual effect

Active Publication Date: 2019-02-22
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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  • Liquefied petroleum gas bottle upper cover and product thereof
  • Liquefied petroleum gas bottle upper cover and product thereof
  • Liquefied petroleum gas bottle upper cover and product thereof

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 of a liquefied petroleum gas bottle upper cover and a product thereof. The preparation process of the liquefied petroleum gas bottle upper cover comprisesthe following steps of A, blank pretreatment, B, performing blank extrusion forming, and C, carrying out rough blank finishing treatment on the cover body. The liquefied petroleum gas bottle upper cover comprises a cover body and a valve seat, the cover body and the valve seat are made of an extrusion method, the cover body and the valve seat are integrally formed, a through hole is formed in thecenter of the valve seat, and threads are arranged on the through hole. The valve seat and the upper cover are integrally formed, so that the welding process of a traditional gas cylinder is avoided,the number and the length of the welding seam of the whole gas cylinder are reduced, and the using safety of the gas cylinder is improved; in the extrusion forming process of the cover body, the metal material and the inner wall of an extrusion cylinder do not slide relative to each other, the metal flowing in the extrusion process is uniform, and compared with a traditional stamping method, thesize precision of the part is high, and the structure is more compact; compared with the prior art, the manufacturing process is reduced, the production processing efficiency is improved, and the production cost is reduced.

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 Applications(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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