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Manufacturing method for C-shaped section ring forging of 2219 aluminum alloy

A manufacturing method and aluminum alloy technology, applied in the field of forgings, can solve the problems of reducing specific strength, room temperature tensile strength and Brinell hardness, low material utilization rate, long processing cycle, etc., to increase room temperature tensile strength and Brinell hardness Hardness, resolution of structure differences and deformation, and short processing cycle

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

AI Technical Summary

Problems solved by technology

[0006] 1. For special-shaped rings obtained after plate welding, the material structure at the weld is different from that of other parts of the part, resulting in a decrease in the performance of the part
[0007] 2. There is welding stress after welding, and large deformation will occur due to stress release during subsequent processing and use, resulting in product scrapping
[0008] 3. If a rectangular ring is produced, more material will be removed by subsequent machining and cutting, which will destroy the streamline integrity of the forging, reduce its specific strength, room temperature tensile strength and high Brinell hardness, and the processing cycle will be longer. The utilization rate of materials is low, resulting in waste, which does not meet the requirements of sustainable development

Method used

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  • Manufacturing method for C-shaped section ring forging of 2219 aluminum alloy
  • Manufacturing method for C-shaped section ring forging of 2219 aluminum alloy
  • Manufacturing method for C-shaped section ring forging of 2219 aluminum alloy

Examples

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Embodiment 1

[0028] This embodiment provides a method for manufacturing a 2219 aluminum alloy C-shaped cross-section ring forging, including the following steps:

[0029] 1) sawing; sawing the 2219 aluminum alloy bar according to the specification;

[0030] 2) Quenching treatment, heat the sawed 2219 aluminum alloy bar to 440-460°C and keep it warm. Cool at a rate of min to below 200°C; in this embodiment, the preferred heating temperature is 450°C, the processing time is the holding time: the effective thickness of the rod × 2.5min / mm, and then cooled to below 200°C at a rate of 3°C / min ;

[0031] 3) Upsetting, punching, and reaming the quenched 2219 aluminum alloy bar to obtain a rectangular ring blank 1, the temperature of the whole process is 400-430°C; the preferred temperature in this embodiment is 420°C;

[0032] 4) Production of special-shaped ring blanks, such as figure 1 with figure 2 As shown, the rectangular ring billet is placed on the ring rolling mill, the rotation spee...

Embodiment 2

[0035] This embodiment provides a method for manufacturing a 2219 aluminum alloy C-shaped cross-section ring forging, including the following steps:

[0036] 1) sawing; sawing the 2219 aluminum alloy bar according to the specification;

[0037] 2) Quenching treatment, heat the sawed 2219 aluminum alloy bar to 440-460°C and keep it warm. Cool at a rate of min to below 200°C; in this embodiment, the preferred heating temperature is 450°C, the processing time is the holding time: the effective thickness of the rod × 2.5min / mm, and then cooled to below 200°C at a rate of 3°C / min ;

[0038] 3) Upsetting, punching, and reaming the quenched 2219 aluminum alloy bar to obtain a rectangular ring blank 1, the temperature of the whole process is 400-430°C; the preferred temperature in this embodiment is 420°C;

[0039] 4) Production of special-shaped ring blanks, such as figure 1 with figure 2 As shown, the rectangular ring billet is placed on the ring rolling mill, the rotation spee...

Embodiment 3

[0043] This embodiment provides a method for manufacturing a 2219 aluminum alloy C-shaped cross-section ring forging, including the following steps:

[0044] 1) sawing; sawing the 2219 aluminum alloy bar according to the specification;

[0045] 2) Quenching treatment, heat the sawed 2219 aluminum alloy bar to 440-460°C and keep it warm. Cool at a rate of min to below 200°C; in this embodiment, the preferred heating temperature is 450°C, the processing time is the holding time: the effective thickness of the rod × 2.5min / mm, and then cooled to below 200°C at a rate of 3°C / min ;

[0046] 3) Upsetting, punching, and reaming the quenched 2219 aluminum alloy bar to obtain a rectangular ring blank 1, the temperature of the whole process is 400-430°C; the preferred temperature in this embodiment is 420°C;

[0047] 4) Production of special-shaped ring blanks, such as figure 1 with figure 2 As shown, the rectangular ring billet is placed on the ring rolling mill, the rotation spee...

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Abstract

The invention provides a manufacturing method for C-shaped section ring forging of a 2219 aluminum alloy. The manufacturing method for C-shaped section ring forging of the 2219 aluminum alloy comprises sawing; quenching treatment, upsetting, punching, carrying out mandrel support reaming hole to obtain a rectangular ring blank; and manufacturing a profile ring blank and manufacturing a forge piece. According to the manufacturing method, the 2219 aluminum alloy profile ring piece is produced, due to the appearance of the forge piece is closer to the part, a flow line of the forge piece can be kept even more complete, and the subsequent machining allowance is small, so that the machining period is short, and the material utilization rate is high, moreover, the ring part is a complete circular ring, internal tissues are uniform, so welding is not needed, and therefore the problem of tissue difference and deformation of plate curl welding is solved; and meanwhile, by adding the quenching and tempering treatment, the tensile strength in room temperature and the brinell hardness are increased.

Description

technical field [0001] The invention relates to the field of forging production, in particular to a method for manufacturing a 2219 aluminum alloy C-shaped cross-section ring forging. Background technique [0002] 2219 aluminum alloy has the characteristics of high specific strength, tensile strength at room temperature and Brinell hardness, good mechanical properties at low temperature and high temperature, and good stress corrosion resistance. It is suitable for structural parts and high-strength weldments working at high temperatures of 315 °C. Its chemical composition is as follows: [0003] Table 1: Chemical Composition of 2219 Aluminum Alloy [0004] [0005] 2219 aluminum alloy is widely used in aviation and aerospace industry. The 2219 aluminum alloy C-section ring is a commonly used part type in aero-engines. The common production method for the 2219 aluminum alloy C-section ring is to use the plate to curl and weld the ring, or to produce the rectangular ring ...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 张华杨家典吴永安罗鸿飞王华东安世豪官斌王春梅
Owner GUIZHOU AVIATION TECHN DEV
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