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Method for forming 05Cr17Ni4Cu4Nb stainless steel air entraining pipe through selective laser melting

A 05cr17ni4cu4nb, laser selective melting technology, applied in the field of additive manufacturing, can solve the problems of high tool cost, difficulty in manufacturing complex special-shaped structural parts, long manufacturing cycle of mechanical processing technology, etc., achieve less mechanical processing, solve long manufacturing cycle, and manufacture short time effect

Active Publication Date: 2021-10-29
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of traditional forging / casting, machining process, long manufacturing cycle, high tool cost, and difficulty in manufacturing complex special-shaped structural parts.

Method used

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  • Method for forming 05Cr17Ni4Cu4Nb stainless steel air entraining pipe through selective laser melting
  • Method for forming 05Cr17Ni4Cu4Nb stainless steel air entraining pipe through selective laser melting
  • Method for forming 05Cr17Ni4Cu4Nb stainless steel air entraining pipe through selective laser melting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Weigh 05Cr17Ni4Cu4Nb stainless steel raw material powder, the mass fraction of each main component of the powder is: Ni3.95%, Cu 3.29%, Cr 16.28%, Nb 0.25%, C 0.015%, Si 0.67%, Mn 0.35%, P0. 018%, S 0.009%, and the rest is Fe element; the powder particle size is 15μm-53μm, of which D10 is 15.57μm, D50 is 38.46μm, D90 is 50.10μm; powder hollow powder content is 0.86%;

[0025] 2) UG software is used to establish a three-dimensional model of the 05Cr17Ni4Cu4Nb stainless steel bleed pipe, such as Figure 1 to Figure 3 As shown, after using the Magics software to slice the 3D model, the thickness of the slice is 40 μm, and the slice file is imported into the laser selective melting equipment. Figure 4 shown;

[0026] 3) Under the condition of argon gas, 05Cr17Ni4Cu4Nb powder is laser-selectively melted and formed, and the powder is scanned by laser, and layer-by-layer accumulation is formed. The process parameters of laser selective melting and forming include: spot di...

Embodiment 2

[0031] 1) Weigh 05Cr17Ni4Cu4Nb stainless steel raw material powder, the mass fraction of each main component of the powder is: Ni4.04%, Cu 3.42%, Cr 16.08%, Nb 0.27%, C 0.012%, Si 0.62%, Mn 0.39%, P0. 016%, S 0.013%, and the rest is Fe element; powder particle size is 15μm-53μm, of which D10 is 15.82μm, D50 is 39.01μm, D90 is 50.50μm; powder hollow flour content is 0.81%;

[0032] 2) UG software is used to establish a three-dimensional model of the 05Cr17Ni4Cu4Nb stainless steel bleed pipe, such as Figure 1 to Figure 3 As shown, use Magics software to slice the 3D model, the thickness of the slice is 40 μm, and import the slice file into the laser selective melting equipment. Figure 4 shown;

[0033] 3) Under the condition of argon gas, 05Cr17Ni4Cu4Nb powder is laser-selectively melted and formed, and the powder is scanned by laser, layer by layer, and the process parameters of laser selective melting and forming include: spot diameter 120μm, laser power 260W, scanning spee...

Embodiment 3

[0038]1) Weigh 05Cr17Ni4Cu4Nb stainless steel raw material powder, the mass fraction of each main component of the powder is: Ni3.95%, Cu 3.33%, Cr 16.31%, Nb 0.22%, C 0.018%, Si 0.62%, Mn 0.34%, P0. 015%, S 0.009%, and the rest is Fe element; powder particle size is 15μm-53μm, of which D10 is 15.68μm, D50 is 38.57μm, D90 is 50.34μm; powder hollow powder content is 0.79%;

[0039] 2) UG software is used to establish a three-dimensional model of the 05Cr17Ni4Cu4Nb stainless steel bleed pipe, such as Figure 1 to Figure 3 As shown, use Magics software to slice the 3D model, the thickness of the slice is 30 μm, import the slice file into the laser selective melting equipment, and the laser selective melting forming direction of the bleed air pipe is as follows: Figure 4 shown;

[0040] 3) Under the condition of argon gas, 05Cr17Ni4Cu4Nb powder is laser-selectively melted and formed, and the powder is scanned by laser, and layer-by-layer accumulation is formed. The process param...

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Abstract

The invention provides a method for forming a 05Cr17Ni4Cu4Nb stainless steel air entraining pipe through selective laser melting. The method comprises the following steps of weighing 05Cr17Ni4Cu4Nb stainless steel raw material powder which comprises the following components of, in percentage by mass, 3.0%-5.0% of Ni, 3.0%-5.0% of Cu, 15.0%-17.5% of Cr, 0.15%-0.45% of Nb, less than or equal to 0.07% of C, less than or equal to 1.0% of Si, less than or equal to 1.0% of Mn, less than or equal to 0.035% of P, less than or equal to 0.025% of S, and the balance Fe; (2) establishing a three-dimensional model of the 05Cr17Ni4Cu4Nb stainless steel air entraining pipe, slicing the three-dimensional model, and importing a slicing file into selective laser melting equipment; and (3) conducting selective laser melting forming of the air entraining pipe on the raw material powder, and the 05Cr17Ni4Cu4Nb stainless steel air entraining pipe is obtained after heat treatment. The problems that a traditional manufacturing process is large in tool consumption, long in manufacturing period, difficult to form complex special-shaped structural parts and the like are solved, and rapid forming and direct manufacturing of the parts made of the material are achieved; and the selective laser melting forming part manufactured through the method is excellent in mechanical property, few in defect, high in density and good in internal quality, and the design and use requirements of aero-engines are met.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a method for forming an 05Cr17Ni4Cu4Nb stainless steel air-introduction pipe by selective laser melting. Background technique [0002] 05Cr17Ni4Cu4Nb is a martensitic precipitation and hardening stainless steel. Due to its high strength, hardness and oxidation resistance, this material is mainly used to manufacture high-strength corrosion-resistant parts that work below 400 ° C, and to manufacture aircraft and missile engines. parts, valve parts, etc. However, the traditional manufacturing process is mainly made by casting / forging and machining processes, the manufacturing cycle is long, and limited by the process itself, it is difficult to manufacture complex and special-shaped structural parts. [0003] Laser selective melting is a method of direct forming of metal parts, which is the latest development of rapid prototyping technology. This technology breaks th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F10/28C21D1/18C21D9/08B22F10/64B33Y10/00B33Y80/00
CPCB22F3/105B22F10/28C21D1/18C21D9/08B22F10/64B33Y10/00B33Y80/00C21D2211/008Y02P10/25
Inventor 薛丽媛马慧君任慧娇周冠男董文启
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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