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Manufacture method for 2219 aluminium alloy cone-shaped ring forging piece with large cone angle

A manufacturing method and aluminum alloy technology are applied in the field of forging manufacturing to achieve the effects of improving the qualification rate, reducing the scrap rate and reducing the production cost

Active Publication Date: 2018-06-29
GUIZHOU AVIATION TECHN DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, for the manufacture of 2219 aluminum alloy large cone angle conical ring forgings, there is no corresponding technical literature to report on the improvement of the above technical problems

Method used

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  • Manufacture method for 2219 aluminium alloy cone-shaped ring forging piece with large cone angle
  • Manufacture method for 2219 aluminium alloy cone-shaped ring forging piece with large cone angle
  • Manufacture method for 2219 aluminium alloy cone-shaped ring forging piece with large cone angle

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Experimental program
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Effect test

Embodiment

[0036] A method for manufacturing a 2219 aluminum alloy large cone angle conical ring forging, comprising the following steps:

[0037] 1) Saw the 2219 aluminum alloy bar, heat it to 460-480°C, and keep it warm for 20 minutes per 10mm effective thickness of the 2219 aluminum alloy bar;

[0038] 2) Upsetting, punching, and reaming the bar after heat preservation to obtain a rectangular ring blank 1;

[0039] 3) Put the mold A2 into the upper end of the rectangular ring blank 1. Driven by the press, the cutting board exerts pressure F1 on the mold A2, so that the mold A2 is slowly pressed into the rectangular ring blank 1. After the mold 2 completely enters the rectangular ring blank 1, the cutting board Continue to apply pressure F1 to the mold A2, keep it for 10-15s, and then exit the mold A2 reversely to obtain the special-shaped ring blank A3;

[0040] 4) Put the mold B4 into the upper end of the special-shaped ring blank A3. Driven by the press, the cutting board exerts pr...

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Abstract

The invention relates to the technical field of forging manufacture and in particular to a manufacture method for a 2219 aluminium alloy cone-shaped ring forging piece with a large cone angle. By sawcutting a bar, heating and thermal insulating, preparing a rectangular ring blank, preparing a multiple special-shaped ring blank and forging the ring blank into a forging piece, the appearance of theobtained 2219 aluminium alloy cone-shaped ring forging piece with the large cone angle can be much closer to a part and a complete streamline of the forging piece can be kept; moreover, the subsequent machining allowance is small, the machining cycle is short and the material utilization rate is high; moreover, the obtained ring forging piece can be a complete circular ring and the interior structure is even without the need for welding, so that the problem of the structure difference and deformation of curl welding of a plate material can be solved.

Description

technical field [0001] The invention relates to the technical field of forging manufacture, in particular to a method for manufacturing a 2219 aluminum alloy large cone angle conical ring forging. Background technique [0002] 2219 aluminum alloy has the characteristics of high strength, good low temperature and high temperature mechanical properties, high fracture toughness, good stress corrosion resistance, etc., and has been widely used in aviation and aerospace industries. 2219 aluminum alloy with inner flange high tube special-shaped ring forging is a kind of parts commonly used in aero-engines. At present, there are two main production methods for high-tube special-shaped ring forgings of 2219 aluminum alloy with inner flange: 1) obtained by crimping and welding plates; 2) obtained by machining rectangular rings. [0003] Using the first method, the material structure at the welding seam of the forging is different from other areas, which will cause the performance of...

Claims

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Application Information

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IPC IPC(8): B21K1/76B21J1/06
CPCB21J1/06B21K1/761
Inventor 吴永安杨家典张华罗鸿飞王华东张园园官斌
Owner GUIZHOU AVIATION TECHN DEV
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