Aluminum alloy 3D printing heat treatment method

A heat treatment method and 3D printing technology, applied in the field of metal materials, can solve problems such as large internal stress of aluminum alloys, achieve the effects of improving density and strength, eliminating residual stress, and increasing yield strength and elongation

Active Publication Date: 2020-11-13
飞而康快速制造科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the object of the present invention is to provide a heat treatment method for 3D printing aluminum alloy, the method sequentially adopts the combined heat treatment process of hot isostatic pressing, solid solution and aging, and the 3D printed aluminum alloy sample Heat treatment is carried out

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0057] Example 1:

[0058] This embodiment provides a heat treatment method of 3D printed aluminum alloy, which comprises the following steps:

[0059] (1) placing a 3D printed aluminum alloy sample in a hot isostatic pressing forming chamber for hot isostatic pressing treatment, wherein the temperature of the hot isostatic pressing treatment is 500 DEG C, the heating rate is 5 DEG C / min, the pressure is 100MPa, the temperature is kept for 3 hours, and then the hot isostatic pressing treatment is carried out with the furnace at a cooling rate of 10 DEG C / min;

[0060] The 3D printing molding method of the aluminum alloy sample comprises the following steps:

[0061] After drying, AlSi7Mg powder is placed in the powder supply bin of 3D printing equipment, the preheating temperature of the substrate is adjusted to 100℃, the powder is evenly spread on the processing platform with a scraper, the thickness of the powder spread is 30μm, and the laser is scanned and irradiated, the power...

Example Embodiment

[0065] Example 2:

[0066] This embodiment provides a heat treatment method of 3D printed aluminum alloy, which comprises the following steps:

[0067] (1) placing a 3D printed aluminum alloy sample in a hot isostatic pressing forming chamber for hot isostatic pressing treatment, wherein the temperature of the hot isostatic pressing treatment is 520 DEG C, the heating rate is 6 DEG C / min, the pressure is 130MPa, the temperature is kept for 2 hours, and then the hot isostatic pressing treatment is cooled with the furnace, and the cooling rate with the furnace is 12 DEG C / min;

[0068] The 3D printing molding method of the aluminum alloy sample comprises the following steps:

[0069] After drying, AlSi10Mg powder is placed in the powder supply bin of 3D printing equipment, and the preheating temperature of the substrate is adjusted to 130℃. The powder is evenly spread on the processing platform with a scraper with a thickness of 40μm, and scanned and irradiated by laser with a power...

Example Embodiment

[0073] Example 3:

[0074] This embodiment provides a heat treatment method of 3D printed aluminum alloy, which comprises the following steps:

[0075] (1) placing a 3D printed aluminum alloy sample in a hot isostatic pressing forming chamber for hot isostatic pressing treatment, wherein the temperature of the hot isostatic pressing treatment is 540 DEG C, the heating rate is 3 DEG C / min, the pressure is 150MPa, the temperature is kept for 4 hours, and then the hot isostatic pressing treatment is cooled with the furnace, and the cooling rate with the furnace is 8 DEG C / min;

[0076] The 3D printing molding method of the aluminum alloy sample comprises the following steps:

[0077] After drying, AlSi10Mg powder is placed in the powder supply bin of 3D printing equipment, and the preheating temperature of the substrate is adjusted to 150℃. The powder is evenly spread on the processing platform with a scraper with a thickness of 60μm, and scanned and irradiated by laser with a power ...

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Abstract

The invention provides an aluminum alloy 3D printing heat treatment method. The method includes the following steps that an aluminum alloy 3D printing sample is subjected to hot isostatic pressing treatment, and then furnace cooling is conducted; the treated sample is subjected to solution treatment and then water cooling is performed; and afterwards, the sample is subjected to aging treatment, and heat-treated 3D printing aluminum alloy is obtained after air cooling. According to the aluminum alloy 3D printing heat treatment method provided in the invention, the combined heat treatment technology of hot isostatic pressing, solid solution and aging is adopted to be assisted with a proper cooling mode to improve the density and strength of a 3D printing aluminum alloy material, the inner residual stress of the material can be removed particularly, the plastic properties like yield strength and ductility are improved, the comprehensive mechanical properties of the aluminum alloy materialare also improved, and the applied field of 3D printing metal materials is widened; and the combined heat treatment technology is selected according to the defects of the 3D printing metal materials, and the reference function on improvement of the properties of various types of metal materials can be achieved.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and relates to a heat treatment method for 3D printing aluminum alloy. Background technique [0002] Metal 3D printing technology has the advantages of high dimensional accuracy, good surface quality, and excellent performance of formed parts. In particular, it can realize the integrated forming of dozens or even hundreds of traditional parts, and can complete the precise forming of highly complex and thin-walled parts. Countries give priority to promotion and are widely used in many fields. As one of the important materials for metal 3D printing, aluminum alloy has been widely used in military industry, aerospace, automobile manufacturing and other fields due to its excellent characteristics such as light density, good elasticity, high specific stiffness and specific strength, and has a good performance. development prospects. [0003] Although the mechanical properties of aluminum all...

Claims

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Application Information

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IPC IPC(8): B22F3/24C22F1/043B22F3/105B33Y10/00
CPCB22F3/24C22F1/043B33Y10/00B22F2003/248
Inventor 陈志茹
Owner 飞而康快速制造科技有限责任公司
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