Method of manufacturing AF1410 ultrahigh strength steel airplane horizontal tail axis

A technology of ultra-high-strength steel and flat tail rotating shaft, which is applied in the direction of improving energy efficiency and process efficiency, and can solve the problems such as the inability to manufacture the whole rotating shaft, hidden safety hazards, and sharp increase in maintenance costs.

Inactive Publication Date: 2008-07-30
王云阁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, if the welding process of similar horizontal tail shafts is improperly controlled, it is easy to induce cracks or corrosion. For example, during the service of an aircraft, it was found that corrosion and crack failures occurred in multiple sorties of horizontal tail shafts in a certain type of aircraft. This is a huge potential safety hazard. Hidden dangers, and the maintenance cost increases sharply due to the replacement of new parts
Since the horizontal tail shaft is a closed-cavity "jujube core"-shaped structure, it is impossible to manufacture the entire shaft according to the traditional manufacturing process
[0005] Therefore, hidden dangers of welding are the main problems in AF1410 steel welding flat tail shaft parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The raw material of AF1410 steel is processed into a bar with a cross-section of about 15×15mm and a length of 1000mm. According to the technical requirements of laser forming, vacuum non-contact plasma melting-argon atomization technology is used to prepare powder, which is supplied in vacuum cans in the powder atomized state. . 70% of the powder is spherical powder, after sieving and drying, the particle size needs to be determined according to the parts and process, generally 100-300 mesh; using laser melting deposition equipment and technology, the parts are nearly finalized according to the three-dimensional digital model of the parts.

[0017] The composition percentage of AF1410 steel powder is C0.18, Si0.035, S0.001, P0.0034, S+P0.0044, Cr1.98, Ni10.1, Co13.8, Mo1.09, Ti0.009, Al0. 007, O0.00008, N0.00008; using CO 2 Laser with output power of 8000W, spot diameter of 5mm, focal length of 500mm, scanning speed: 8mm / min, powder flow rate: 21g / min, single-layer de...

Embodiment 2

[0023] Other conditions are the same as embodiment 1, adopt CO 2 Laser with output power of 10000W, spot diameter of 5.0mm, focal length of 450mm, scanning speed: 9mm / min, powder flow rate: 20g / min, single layer deposition thickness: 0.5mm, protected by argon gas purging.

[0024] Table 2 Tensile properties of AF1410 steel laser-formed horizontal tail shaft parts at room temperature

[0025] orientation

σ b (MPa)

σ 0.2 (MPa)

δ 5

ψ

vertical

Towards

1870

1695

16.0

65.7

1790

1688

16.2

67.2

horizontal

Towards

1838

1740

13.7

52.5

1820

1735

14.1

53.1

[0026] It can be seen from Table 2 that the laser-formed horizontal tail shaft made of AF1410 steel has excellent tensile properties at room temperature, and its strength and plasticity are basically equivalent to those of forgings. The strength and plasticity between ...

Embodiment 3

[0029] Other conditions are the same as embodiment 1, adopt CO 2 Laser with an output power of 12000W, a spot diameter of 6.0mm, a focal length of 450mm, a scanning speed of 10mm / min, a powder flow rate of 24g / min, a single-layer deposition thickness of 0.6mm, and is protected by argon gas purging.

[0030] Table 3 Tensile properties of AF1410 steel laser-formed horizontal tail shaft parts at room temperature

[0031] orientation

σ b (MPa)

σ 0.2 (MPa)

δ 5

ψ

vertical

Towards

1875

1690

16.4

66.7

1784

1682

15.8

65.2

horizontal

Towards

1840

1735

12.1

51.5

1820

1720

12.8

52.1

[0032] It can be seen from Table 3 that the laser-formed horizontal tail shaft made of AF1410 steel has excellent tensile properties at room temperature, and its strength and plasticity are basically equivalent to those of forgings. The stren...

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Abstract

The invention relates to a method for producing an AF1410 ultrahigh strength steel aircraft horizontal tail shaft. Bar or forging of the AF1410 ultrahigh strength steel is mechanically processed into a fine bar and is then produced into powder; by adopting laser forming technology, the AF1410ultrahigh strength steel powder is melted and deposited layer by layer according to a three-dimensional number module of parts of the horizontal tail shaft; the whole horizontal tail shaft can be produced by carrying out digital control mechanical process only once during the process. The invention initially utilizes laser melting deposition (laser fast forming) technology in a creative way, which realizes the manufacture of the AF1410 unimach whole horizontal tail shaft, without processes of forging and welding and special requirements for the dimension of raw materials. The structure, the components and the properties of the parts are equal to the parts manufactured with the forging part; manufacturing cost is reduced by 1/3 and manufacturing period is reduced by more than 1/2; static strength is improved by 10 percent and endurance life can be prolonged by more than 3 times.

Description

technical field [0001] The invention relates to laser forming technology and ultra-high-strength steel materials, and in particular provides a method for manufacturing the AF1410 ultra-high-strength steel integral aircraft horizontal tail shaft Background technique [0002] AF1410 steel (16Co14Ni10Cr2Mo) is a low-carbon high-alloy secondary hardening ultra-high-strength steel with excellent comprehensive mechanical properties, low-temperature performance and welding performance, which can be used for damage tolerance design and is suitable for manufacturing long-life, high-strength structural parts, shafts Such parts and fasteners are commonly used in the manufacture of aircraft horizontal tail shafts, mostly by welding, and the raw materials are mainly bars and forgings. [0003] The AF1410 steel welded horizontal tail shaft can make the strength coefficient of the weld joint more than 0.9 stably, and through surface strengthening and protection, it can basically meet the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105
CPCY02P10/25
Inventor 王云阁王向明王华明
Owner 王云阁
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