A kind of preparation technology of 2a14 aluminum alloy high tube parts
A preparation process, 2A14 technology, applied in the field of high-performance manufacturing process, can solve the problems of large size, reduce the anisotropy of high cylinder parts, reduce the plasticity of high cylinder parts, etc., to promote uniform dispersion precipitation, improve comprehensive mechanical properties, The effect of suppressing the dynamic recovery effect
A preparation process, 2A14 technology, applied in the field of high-performance manufacturing process, can solve the problems of large size, reduce the anisotropy of high cylinder parts, reduce the plasticity of high cylinder parts, etc., to promote uniform dispersion precipitation, improve comprehensive mechanical properties, The effect of suppressing the dynamic recovery effect
CN110170606BActive Publication Date: 2020-06-30CENT SOUTH UNIV
Image
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0036] A kind of preparation technology of 2A14 aluminum alloy high cylinder part of the present invention, its flow chart is as follows figure 1 shown, including:
[0037] (1) Heat the homogenized 2A14 aluminum alloy ingot to 480°C±5°C in a resistance furnace, hold it for 2 hours, and then perform multi-directional forging on a hydraulic press (along the axial, radial, and tangential directions, respectively. Two times of upsetting and elongation, followed by rounding and axial leveling), in which both the upper and lower dies are heated to 400°C, the deformation of a single upsetting is 60%, and the final forging temperature is ≥380°C;
[0038] (2) Punch the blank after multi-directional forging on a hydraulic press, heat the punch used for punching to 380°C, and machine after punching to remove forging defects such as burrs and flashes;
[0039] (3) Heat the punched blank to 500°C±2°C in a resistance furnace, and keep it warm for 4h;
[0040](4) Firstly, the heated billet...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| yield strength | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a preparation process of a 2A14 aluminum alloy high-cylinder part. The preparation process comprises the following steps that a 2A14 aluminum alloy ingot is heated in a resistance furnace to 475 DEG C-485 DEG C, and subjected to multi-directional forging on a hydraulic machine; a blank subjected to multi-direction forging is punched on the hydraulic machine; the blank subjected to punching is heated to 498 DEG C-502 DEG C, and heat preservation is carried out for 4-5 hours; hole expanding is carried out; a ring blank subjected to hole expanding is heated to 498-502 DEGC, and heat preservation is carried out for 4-5 hours; medium-temperature ring rolling is carried out, specifically, the ring blank obtained after high-temperature solid solution treatment is cooled to 200 DEG C-250 DEG C at room temperature, and then ring rolling is carried out, wherein the deformation amount is 25%-30%; and the heat treatment is carried out, so that the preparation of the 2A14 aluminum alloy high-cylinder part is completed. According to the preparation process, a coarse second phase is crushed and dissolved and the crystal grain is refined through middle-temperature mandrelsupporter hole expanding and medium-temperature ring rolling in combination with high-temperature solid solution heat treatment, the strength and plasticity of the high-cylinder part can be improved at the same time, high-performance manufacturing of the 2A14 aluminum alloy high-cylinder part is realized, and the mechanical property requirement of structural parts for spaceflight is met.
Description
technical field [0001] The invention belongs to the field of plastic processing and heat treatment of aluminum alloy materials, in particular to a high-performance manufacturing process capable of comprehensively improving the strength and toughness of large-scale 2A14 aluminum alloy high cylinder parts. Background technique [0002] 2A14 aluminum alloy is a heat-treatable and strengthened deformable aluminum alloy, which has the advantages of high strength, high plasticity and excellent weldability. It is an important structural material used in the manufacture of light-weight and high-strength alloy components in the aerospace field. With the gradual development of aerospace structural parts in the direction of integration, light weight and large size, extremely high requirements are put forward for its structural design and manufacturing performance. The large-scale 2A14 aluminum alloy high cylinder used in a certain type of strategic weaponry has a diameter of more than ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
30 Jun 2020
Publication
CN110170606B
- IPC
- B21J5/00; B21J5/08; B21J5/02
- CPC
- B21J5/002; B21J5/02; B21J5/08
- Inventors
- 易幼平; 黄始全