Stainless steel powder for additive manufacturing, and preparation method thereof

It is a technology of additive manufacturing and powder preparation, which is applied in the field of metal and alloy powder preparation. It can solve the problems that the oxygen content of the powder is easy to rise, it is difficult to meet the high-performance metal, and the particle size of the powder is difficult to control. Fluidity, simple and efficient preparation method

Inactive Publication Date: 2018-08-21
GUANGDONG ZHENGDE MATERIAL SURFACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation method of 3D printed stainless steel materials is mainly gas atomization powder making, gas atomization powder making can obtain a powder with a certain degree of sphericity and fluidity, but during the gas atom

Method used

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  • Stainless steel powder for additive manufacturing, and preparation method thereof
  • Stainless steel powder for additive manufacturing, and preparation method thereof
  • Stainless steel powder for additive manufacturing, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1:

[0037] The method for preparing stainless steel powder is as follows:

[0038] (1) In the screening system of Artech Swiss ultrasonic sieving machine, the original stainless steel powder A is classified to obtain the stainless steel powder B suitable for additive manufacturing particle size distribution. The effective screening diameter of the screen is φ520mm, and the screen size is 325 mesh and 500 mesh;

[0039] (2) In the spheroidization of TekNano-40 Nanopowder Synthesis system, stainless steel powder B is spheroidized to obtain stainless steel powder C. Among them, the system parameters are: the sheath gas of the plasma system is a mixture of argon and hydrogen, the flow rate of argon is 60L / min, and the flow rate of hydrogen is 15L / min; the center gas of the plasma system is argon, and the flow rate is 35L / min. The carrier gas of the plasma system is argon, and the flow rate is 10L / min. Powder feeding rate is 80g / min;

[0040] (3) In the ultrasonic cleani...

Example Embodiment

[0043] Example 2:

[0044] The method for preparing stainless steel powder is as follows:

[0045] (1) In the screening system of Artech Swiss ultrasonic sieving machine, the original stainless steel powder A is classified to obtain the stainless steel powder B suitable for additive manufacturing particle size distribution. The effective screening diameter of the screen is φ520mm, and the screen size is 325 mesh and 500 mesh;

[0046] (2) In the spheroidization of TekNano-40 Nanopowder Synthesis system, stainless steel powder B is spheroidized to obtain stainless steel powder C. Among them, the system parameters are: the sheath gas of the plasma system is a mixture of argon and hydrogen, the flow rate of argon is 60L / min, and the flow rate of hydrogen is 10L / min; the center gas of the plasma system is argon, and the flow rate is 35L / min. The carrier gas of the plasma system is argon, and the flow rate is 10L / min. Powder feeding rate is 100g / min;

[0047] (3) In the ultrasonic clean...

Example Embodiment

[0051] Example 3:

[0052] The method for preparing stainless steel powder is as follows:

[0053] (1) In the screening system of Artech Swiss ultrasonic sieving machine, the original stainless steel powder A is classified to obtain the stainless steel powder B suitable for additive manufacturing particle size distribution. The effective screening diameter of the screen is φ520mm, and the screen size is 325 mesh and 500 mesh;

[0054] (2) In the spheroidization of TekNano-40 Nanopowder Synthesis system, stainless steel powder B is spheroidized to obtain stainless steel powder C. Among them, the system parameters are: the sheath gas of the plasma system is a mixture of argon and hydrogen, the flow rate of argon is 80L / min, and the flow rate of hydrogen is 15L / min; the center gas of the plasma system is argon, and the flow rate is 25L / min. The carrier gas of the plasma system is argon, and the flow rate is 10L / min. The powder feeding rate is 60g / min;

[0055] (3) In the ultrasonic cl...

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Abstract

The invention discloses a high-sphericity stainless steel powder for additive manufacturing, and a preparation method thereof. The preparation method comprises the preparation steps of screening, spheroidizing, cleaning and drying. The preparation method provided by the invention is simple, high in production efficiency, high in finished product quality, suitable for mass production, and capable of meeting the demand of additive manufacturing; and meanwhile, the prepared stainless steel powder is excellent in performance, compact in powder structure, and stable in performance, so that the stainless steel powder for additive manufacturing can be applied to a worse working condition.

Description

technical field [0001] The invention relates to the technical field of metal and alloy powder preparation, in particular to a stainless steel powder for additive manufacturing and a preparation method thereof. Background technique [0002] Additive Manufacturing technology (Additive Manufacturing, AM) is also called 3D printing technology. Additive manufacturing technology is mainly based on computer-aided design, material processing and molding technology and digital models. Through programming and numerical control system, special printing materials, Such as metal materials, ceramic materials, inorganic materials, etc., are piled up layer by layer through various methods such as extrusion, sintering, melting, solidification, spraying, etc., to create a new manufacturing technology with entities. [0003] Additive manufacturing (AM) technology is the process of connecting materials to make objects based on three-dimensional CAD data. Compared with subtractive manufacturing,...

Claims

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Application Information

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IPC IPC(8): B22F9/14B22F1/00C23G5/02B33Y70/00
CPCC23G5/02B22F9/14B33Y70/00B22F1/065
Inventor 曾德长邹永鸣邱金勇邱兆国吴姚莎
Owner GUANGDONG ZHENGDE MATERIAL SURFACE TECH
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