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Thermal treatment method of stainless steel 3D printing material

A heat treatment method and 3D printing technology, applied in additive processing and other directions, can solve problems such as incomplete application, and achieve the effects of short aging time, high hardness and small dimensional changes

Inactive Publication Date: 2020-04-24
上海镭镆科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing heat treatment process is not fully applicable to 3D printed parts

Method used

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  • Thermal treatment method of stainless steel 3D printing material
  • Thermal treatment method of stainless steel 3D printing material
  • Thermal treatment method of stainless steel 3D printing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A 3D printing material heat treatment process disclosed in this embodiment, taking Corrax stainless steel material as an example, includes the following steps:

[0026] Step 1: Part Printing

[0027] Through the 3D printing equipment, the strip scanning strategy is used to print parts of 100×100×30mm, and the heating temperature of the substrate is 200°C;

[0028] Step 2: Cryogenic Treatment

[0029] After the molding is completed, the parts are placed in a cryogenic box for cold treatment at -20°C for 2 hours, and air cooled to room temperature;

[0030] Step 3: Aging Treatment

[0031] After the cold treatment is completed, the parts are placed in a muffle furnace for aging heat treatment. The aging temperature is 550°C, the aging time is 2h, air-cooled to room temperature, and the heat treatment is protected by an Ar atmosphere.

Embodiment 2

[0050] A 3D printing material heat treatment process disclosed in this embodiment, taking Corrax stainless steel material as an example, includes the following steps:

[0051] Step 1: Part Printing

[0052] Through the 3D printing equipment, the strip scanning strategy is used to print parts of 100×100×30mm, and the heating temperature of the substrate is 180°C;

[0053] Step 2: Cryogenic Treatment

[0054] After the molding is completed, the parts are placed in a cryogenic box for cold treatment, the temperature of the cold treatment is -30°C, the time is 1.5h, and air-cooled to room temperature;

[0055] Step 3: Aging Treatment

[0056] After the cold treatment is completed, the parts are placed in a muffle furnace for aging heat treatment. The aging temperature is 560°C, the aging time is 2h, air-cooled to room temperature, and the heat treatment is protected by an Ar atmosphere.

Embodiment 3

[0075] A 3D printing material heat treatment process disclosed in this embodiment, taking Corrax stainless steel material as an example, includes the following steps:

[0076] Step 1: Part Printing

[0077] Through the 3D printing equipment, the strip scanning strategy is used to print parts of 100×100×30mm, and the heating temperature of the substrate is 170°C;

[0078] Step 2: Cryogenic Treatment

[0079] After the molding is completed, the parts are placed in a cryogenic box for cold treatment at -40°C for 2 hours, and air cooled to room temperature;

[0080] Step 3: Aging Treatment

[0081] After the cold treatment is completed, the parts are placed in a muffle furnace for aging heat treatment. The aging temperature is 570°C, the aging time is 2h, air-cooled to room temperature, and the heat treatment is protected by an Ar atmosphere.

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Abstract

The invention discloses a thermal treatment method of a stainless steel 3D printing material. The thermal treatment method is used for simplifying the thermal treatment process flow of a 3D printing part, the overall mechanical performance is improved, and the part processing allowance is reduced. The thermal treatment method is characterized by comprising the following steps of 1, part printing;2, cryogenic treatment; and 3, ageing treatment. Compared with the prior art, the thermal treatment method has the beneficial effects as follows: the thermal treatment process flow is simple, a high-temperature solid-solution treatment step is omitted, and the ageing time is short. The size change of a part before and after thermal treatment is small. The part is high in hardness, high in tensilestrength, and high in toughness.

Description

technical field [0001] The invention relates to a heat treatment method for 3D printing stainless steel materials, which belongs to the technical field of material heat treatment. Background technique [0002] 3D printing is a new manufacturing technology that designs a three-dimensional model through computer software, and uses layered processing and superposition forming to produce the same new manufacturing technology as the three-dimensional model. Compared with traditional subtractive manufacturing, 3D printing belongs to additive manufacturing, which has many advantages such as short production cycle, good design flexibility, and high degree of customization. [0003] Usually, the mechanical properties of metal parts in the form of 3D printing cannot meet the requirements of actual use. Subsequent heat treatment is required to meet the working conditions of the parts. Such as the commonly used mold steel materials such as Corrax, 17-4PH, PH13-8Mo, etc., in order to ob...

Claims

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Application Information

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IPC IPC(8): B22F3/24B33Y40/20
CPCB22F3/24B33Y40/00B22F2003/248
Inventor 吴巧巧于鹏超王克文牛洁张国良
Owner 上海镭镆科技有限公司
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