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Powder cleaning method for additive manufacturing complex titanium alloy wing rudder part

A technology of additive manufacturing and cleaning method, which is applied in the field of additive manufacturing, can solve the problems such as the difficulty of powder cleaning of wing and rudder parts, and achieve the effects of solving the difficulty of powder cleaning, facilitating mass production, and removing residual stress

Pending Publication Date: 2022-04-12
BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above analysis, the present invention aims to provide a powder cleaning method for additively manufacturing complex titanium alloy wing rudder parts, which solves the problem of difficult powder cleaning in wing rudder parts in the prior art

Method used

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  • Powder cleaning method for additive manufacturing complex titanium alloy wing rudder part
  • Powder cleaning method for additive manufacturing complex titanium alloy wing rudder part
  • Powder cleaning method for additive manufacturing complex titanium alloy wing rudder part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] The powder cleaning method for additively manufacturing complex titanium alloy wing rudder parts provided in this embodiment includes the following steps:

[0078] Step 1: Take the wing rudder parts and the base plate out of the forming cylinder and place them on a mechanical vibration table. While the workpiece is vibrating, use 0.8MPa compressed air to purge the surface and internal cavity of the wing rudder parts until no powder is visible to the naked eye. Most of the powder in the cavity is cleaned up;

[0079] Step 2: Carry out low-temperature vacuum heat treatment on the preliminarily cleaned workpieces including wing rudder parts and substrates. -2 Pa;

[0080] Among them, the cooling process during the low-temperature vacuum heat treatment process is as follows: drop from the holding temperature to 300°C at a cooling rate of 8-12°C / min, keep the temperature for 30 minutes during the cooling stage, and then drop to room temperature at a cooling rate of 4-6°C / mi...

Embodiment 2

[0087] The powder cleaning method for additively manufacturing complex titanium alloy wing rudder parts provided in this embodiment includes the following steps:

[0088] Step 1: Take the wing rudder parts and the substrate out of the forming cylinder and place them on a mechanical vibration table. While the workpiece is vibrating, use 1MPa compressed air to purge the surface of the wing rudder parts and the internal cavity until no powder is visible to the naked eye. Most of the powder in the cavity is cleaned up;

[0089] Step 2: Carry out low-temperature vacuum heat treatment on the preliminarily cleaned workpieces including wing rudder parts and substrates. -3 Pa;

[0090] Among them, the cooling process during the low-temperature vacuum heat treatment process is as follows: drop from the holding temperature to 300°C at a cooling rate of 8-12°C / min, keep the temperature for 45 minutes during the cooling stage, and then drop to room temperature at a cooling rate of 4-6°C / min...

Embodiment 3

[0096] The powder cleaning method for additively manufacturing complex titanium alloy wing rudder parts provided in this embodiment includes the following steps:

[0097] Step 1: Take the wing rudder parts and the substrate out of the forming cylinder and place them on a mechanical vibration table. While the workpiece is vibrating, use 1MPa compressed air to purge the surface of the wing rudder parts and the internal cavity until no powder is visible to the naked eye. Most of the powder in the cavity is cleaned up;

[0098] Step 2: Carry out low-temperature vacuum heat treatment on the preliminarily cleaned workpieces including wing rudder parts and substrates. -2 Pa;

[0099] Among them, the cooling process during the low-temperature vacuum heat treatment process is as follows: drop from the holding temperature to 300°C at a cooling rate of 8-12°C / min, keep the temperature for 45 minutes during the cooling stage, and then drop to room temperature at a cooling rate of 4-6°C / m...

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Abstract

The invention discloses a powder cleaning method for additive manufacturing complex titanium alloy wing rudder parts, belongs to the technical field of additive manufacturing, and solves the problem that powder in the wing rudder parts is difficult to clean in the prior art. The method comprises the following steps: sequentially carrying out primary cleaning, primary vacuum heat treatment, separation of a substrate and the rudder part, removal of an auxiliary supporting structure, secondary cleaning and secondary vacuum heat treatment on the interior of the rudder part; the temperature of the primary vacuum heat treatment is lower than that of the secondary vacuum heat treatment. The method can be used for cleaning the powder of the additive manufacturing complex titanium alloy wing rudder part.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, in particular to a powder cleaning method for additively manufacturing complex titanium alloy wing rudder parts. Background technique [0002] Due to its low density, high specific strength, good corrosion resistance, and biocompatibility, titanium alloys have been widely used in aviation, aerospace, ships, chemicals, metallurgy, and biomedical fields. [0003] Additive manufacturing technology is a manufacturing technology based on the principle of discrete accumulation, through the layer-by-layer superposition of raw material powder to realize the forming of wing and rudder parts. As a representative additive manufacturing technology, laser selective melting forming technology has a high degree of freedom in forming, fine grains inside the wing and rudder parts, and excellent comprehensive mechanical properties. New ideas have become an important development direction of advance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F10/64B22F10/68B22F10/80B33Y10/00B33Y40/20B33Y50/02
Inventor 刘程程陈荣崔照雯惠泰龙刘莹莹钱远宏李志勇
Owner BEIJING XINGHANG MECHANICAL ELECTRICAL EQUIP
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