Producing method of aluminum alloy seamless stage variable section pipe and preparation device

A technology for preparing device and changing section, which is applied in the direction of metal extrusion mandrel, etc., can solve the problem that the production of pipe fittings with variable section in stages cannot be realized, and achieve the effect of saving materials, reducing production cost and optimizing structure.

Inactive Publication Date: 2013-02-13
GUANGDONG WEIYE ALUMINUM FACTORY GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In special fields such as machinery manufacturing, petroleum, energy, and ocean, it is necessary to use pipe fittings with variable cross-sections in stages. The pipe fittings can optimize the structural design and make their connections stronger, but the existing technology cannot realize the production of pipe fittings with variable cross-sections in stages.
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Method used

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  • Producing method of aluminum alloy seamless stage variable section pipe and preparation device
  • Producing method of aluminum alloy seamless stage variable section pipe and preparation device
  • Producing method of aluminum alloy seamless stage variable section pipe and preparation device

Examples

Experimental program
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Effect test

specific Embodiment 1

[0033] Such as Image 6 , Figure 7 , Figure 8 and Figure 11 A preparation device for an aluminum alloy seamless stage-variable cross-section pipe is shown, including an extruder and an extrusion die, and the extrusion die includes an extrusion die 2, a die support 6, an extrusion gasket 4, a multi-stage stepped The extrusion needle 5, the extrusion cylinder 1 and the extrusion shaft 3, the multi-stage stepped extrusion needle 5 adopts the three-stage stepped extrusion needle 5-1, the extrusion shaft 3 is located in the extrusion cylinder 1, The three-stage stepped extrusion needle 5-1 is located in the central through hole of the extrusion shaft 3, the extrusion die 2 is arranged at the head end of the extrusion barrel 1, and the extrusion die 2 is installed On the die support 6, the extrusion gasket 4 is arranged at the front end of the extrusion shaft 3, and the three-stage stepped extrusion needle 5-1 moves in the extrusion die 2 under the control of the extrusion mac...

specific Embodiment 2

[0040] Such as Figure 9 and Figure 12As shown, the characteristics of this embodiment are: the multi-stage stepped extrusion needle 5 adopts a two-stage stepped extrusion needle 5-2, and other features are the same as those of the specific embodiment 1. According to the method of the specific embodiment 1, A two-stage aluminum alloy seamless stage variable-section pipe body is formed.

specific Embodiment 3

[0041] Such as Figure 10 As shown, the characteristics of this embodiment are: the multi-stage stepped extrusion needle 5 has four stages 5-3, five stages or more than six stages, and other features are the same as those of the specific embodiment 1, according to the method of the specific embodiment 1 , through the extrusion needle control system, the multi-stage stepped extrusion needle is controlled to return to the fourth level, the fifth level or the sixth level, and the multi-level aluminum alloy seamless stage variable section tube is manufactured.

[0042] Such as Figure 13 Shown: the aluminum alloy seamless stage variable cross-section pipe body produced by the present invention is used in a high-speed rotator.

[0043] Because the high-speed rotator requires that the aluminum alloy tube body 9 installed on the rotating body has a thicker tube wall near the center, and a thinner tube wall at the tail end, so as to reduce the centrifugal force generated during rotat...

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Abstract

The invention discloses a producing method of an aluminum alloy seamless stage variable section pipe and a preparation device. A mould adopts a multi-stage step extruding needle. The extruding steps are as follows: taking the first stage with the maximum diameter of the multi-stage step extruding needle to the middle of a working belt of an extruding die, forming a wall-thinned pipe body through the first stage with the maximum diameter of the multi-stage step extruding needle; when the length of the wall-thinned pipe reaches the design requirement, enabling the multi-stage step extruding needle to return to the second stage, taking a second stage to the middle of the working belt of the extruding die, forming a wall-thickened pipe body by the second stage of the multi-stage step extruding needle; and until the step number fits for the requirement, cutting off the shaped aluminum alloy pipe by a cutting machine. The invention can produce the aluminum alloy seamless stage variable section pipe; and the aluminum alloy seamless stage variable section pipe is high in dimensional precision, firm, and high in producing efficiency; therefore, the production cost is reduced; and the aluminum alloy seamless stage variable section pipe realizes the structural optimal design, so that the material is saved and the self-weight of the member is lightened.

Description

technical field [0001] The invention belongs to a production method of metal pipe fittings, and in particular relates to a production method and a preparation device of an aluminum alloy seamless stage variable-section pipe. Background technique [0002] Squeeze casting to form seamless pipes is a new material processing technology invented in the 1970s. It is a process of solidifying and forming liquid metal under high mechanical pressure to obtain seamless pipes. The processing technology The mold adopts a first-stage extrusion needle, and the section of the seamless pipe formed by the first-stage extrusion needle is constant, that is, the circumference and wall thickness are consistent, such as figure 1 and figure 2 shown. In special fields such as machinery manufacturing, petroleum, energy, ocean, etc., it is necessary to use pipe fittings with variable cross-section in stages. The pipe fittings can optimize the structural design and make their connection stronger, bu...

Claims

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Application Information

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IPC IPC(8): B21C23/02B21C25/04
Inventor 梁世斌李伟萍
Owner GUANGDONG WEIYE ALUMINUM FACTORY GRP
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