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Three-directional near-isotropy high-performance aluminum alloy cylindrical forge piece manufacturing process

A manufacturing process and technology of aluminum alloy, which is applied in the field of manufacturing process of three-way nearly isotropic high-performance aluminum alloy cylindrical forgings, can solve the problem of extremely high equipment capacity requirements of ring rolling mills, large dimensions in the height direction of cylindrical forgings, and loss of radial elongation Indicators and other issues to achieve the effect of tapping material potential and high peak strength

Inactive Publication Date: 2019-05-17
天津航天长征技术装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dimension in the height direction of the cylindrical forging is too large to be cold deformed by axial cold pressing or cold expansion. The outer diameter can only be increased by 2-3% by cold rolling, but this requires extremely high equipment capacity of the ring rolling mill , and will lose the radial elongation index to a certain extent

Method used

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  • Three-directional near-isotropy high-performance aluminum alloy cylindrical forge piece manufacturing process

Examples

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Effect test

Embodiment 1

[0106] Taking the 2A14 aluminum alloy tubular forging, a key part of a key model of the Air Force, as an example, the finished product size is Φ1040×Φ870×1000mm, including the following steps:

[0107] Step 1: Raw material size design:

[0108]The aluminum alloy round ingot produced by the semi-continuous casting method as the raw material, considering the structural size of the part, the consumption of the forging process, and the machining allowance, requires the height-to-diameter ratio of the ingot L / D=2, the diameter of the ingot is Φ600mm, and the height is 1200mm;

[0109] Step 2: Ingot Quality Inspection:

[0110] The state of the ingot is annealed, and the quality of the ingot is being controlled;

[0111] Step 3: Heating the ingot before forging:

[0112] The ingot is installed in the furnace at room temperature. The heating process is divided into two stages. The first stage: from room temperature to 430°C for 2 hours, and keep it for 1 hour; the second stage, tak...

Embodiment 2

[0150] Taking the 2A14 aluminum alloy tubular forging, a key part of a key model of the Air Force, as an example, the finished product size is Φ1040×Φ870×1000mm, including the following steps:

[0151] Step 1: Raw material size design:

[0152] The aluminum alloy round ingot produced by the semi-continuous casting method as the raw material, considering the structural size of the part, the consumption of the forging process, and the machining allowance, requires the height-to-diameter ratio of the ingot to be L / D=3, the diameter of the ingot to be Φ600mm, and the height to be 1800mm;

[0153] Step 2: Ingot Quality Inspection:

[0154] The state of the ingot is annealed, and the quality of the ingot is being controlled;

[0155] Step 3: Heating the ingot before forging:

[0156] The ingot is installed in the furnace at room temperature. The heating process is divided into two stages. The first stage: from room temperature to 450°C for 2 hours, and keep it for 1 hour; the seco...

Embodiment 3

[0194] Taking the 2A14 aluminum alloy tubular forging, a key part of a key model of the Air Force, as an example, the finished product size is Φ1040×Φ870×1000mm, including the following steps:

[0195] Step 1: Raw material size design:

[0196] The aluminum alloy round ingot produced by the semi-continuous casting method as the raw material, considering the structural size of the part, the consumption of the forging process, and the machining allowance, requires the height-to-diameter ratio of the ingot to be L / D=2.5, the diameter of the ingot to be Φ600mm, and the height to be 1500mm;

[0197] Step 2: Ingot Quality Inspection:

[0198] The state of the ingot is annealed, and the quality of the ingot is being controlled;

[0199] Step 3: Heating the ingot before forging:

[0200] The ingot is installed in the furnace at room temperature. The heating process is divided into two stages. The first stage: from room temperature to 440°C for 2 hours, and keep it for 1 hour; the se...

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Abstract

The invention provides a three-directional near-isotropy high-performance aluminum alloy cylindrical forge piece manufacturing process. The manufacturing process specifically comprises the following steps of raw material size design, cast ingot quality detection, heating before ingot casting, multi-directional forging, return to a furnace for heating, Z-direction upsetting and punching, return toa furnace for heating, core shaft drawing out, return to a furnace for heating, saddle forging, machining, heating before rolling, ring rolling, solution treatment, aging treatment and quality detection. According to the manufacturing process, an aluminum alloy cylindrical forge piece is subjected to nearly equal deformation in three directions, so that the three-direction performance of a productis nearly isotropic; a thick residual crystalline phase in cast-state structure is fully crushed so as to provide structure preparation for second phase uniform dispersion distribution in the heat treatment process; a second phase in the structure is fully dissolved, the degree of supersaturation is improved, the material potential is excavated to the maximum extent, and the performance limit ofa material is exerted; and the small reduction rate is adopted, the quenching water temperature is increased, the stress in the product manufacturing process is reduced, so that the residual stress ofthe forge piece is controlled within a certain range.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy forging cylinder technology, in particular to a manufacturing process for a three-way near-isotropic high-performance aluminum alloy cylinder forging. Background technique [0002] With the development of my country's aerospace industry, large-scale, integrated, and high reliability have become the development direction and general trend of aerospace products. In recent years, the demand for large-scale aluminum alloy rotary body integral forgings is increasing, and the requirements for its service performance are also increasing. Traditional integral casting has the advantages of low cost and short cycle, but it is prone to loose and porosity. Defects, and the overall performance of the product is low, unable to meet service requirements. Forging forming, through thermoplastic deformation of the billet, breaks the coarse residual crystal phase in the as-cast structure, improves the unifor...

Claims

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Application Information

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IPC IPC(8): B23P15/00
Inventor 姚梦张文学倪江涛刘浩张曼曼付敏敏马少义高建新朱凯魏博深车景斌常永甫杨立乐
Owner 天津航天长征技术装备有限公司
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