Method and device for producing metal 3D printing method product

A technology of 3D printing and production method, which is applied in the field of high-temperature sintering, alloying and densification to produce metal parts and components, and can solve the problems of high power, high cost, and large-scale commercial investment of laser generators.

Inactive Publication Date: 2014-05-07
王利民
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AI Technical Summary

Problems solved by technology

Due to the high melting or sintering temperature of the metal, the power of the laser generator used in the laser forming method is large, generally above 200W. The production technology of high-power lasers is difficult, expensive, large-scale commercial investment is large, and the threshold is high.

Method used

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  • Method and device for producing metal 3D printing method product

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Embodiment Construction

[0015] The specific embodiment of the present invention is described as follows by using 3D printing stainless steel 316L material metal parts and components as an example:

[0016] one. Preparation of Metal Powder Mixtures for Thermoplastic Forming

[0017] (1) Select stainless steel 316L grade spherical metal powder with an average particle size D50=25μm

[0018] (2) Thermoplastic molding binder composition: 50% paraffin + 50% polyethylene

[0019] (3) Mixing: 60% metal powder content + 40% molding binder volume content, using a 5 kg screw mixer, mixing 20 kg of the mixture at a temperature below 120 ° C for 20 hours.

[0020] two. 3D printing formed metal parts green body

[0021] (1) Use professional 3D printing software to design the three-dimensional metal parts product model to be printed in the computer, set the printing parameters, and control the temperature of the print head of the 3D printer by the low-temperature fusion deposition molding method (FDM method) a...

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Abstract

The invention discloses a method and device for producing a metal 3D printing product. A low-melting-point thermoplastic 3D metal printing raw material mixture is prepared by adopting a method of combination between metal powder materials and forming adhesives, a 3D printer (please see the 3D printer in the figure) using a commercial FDM is slightly modified, a metal part product blank can be printed by using the prepared metal printing raw material mixture, the forming adhesives in a blank part are removed by using a thermal debinding method or a chemocatalysis debinding method or other technologies, high-temperature sintering is carried out on the blank without the forming adhesives by using a vacuum sintering method or an atmosphere protective sintering method, and a high-performance complex metal part product with alloying densification is produced. The method and device for producing the metal 3D printing product have the advantages that the device and the technology for protruding metal parts or parts made of other materials in a low-cost mode through a 3D printing method are developed.

Description

technical field [0001] The invention relates to a method of adding organic binders to metal powders, 3D printing product green bodies by hot melt deposition molding (FDM method), and then removing binders, high-temperature sintering, alloying and densification to produce metal parts and components. Methods and equipment. [0002] Background technique [0003] 3D printing production technology is a kind of near-net shape additive manufacturing technology. Its principle is that the software decomposes the three-dimensional parts and components designed by the computer into several layers of plane slices, and prints them out through 3D printers to produce the required parts of different materials. Components; because of its advantages of flexibility, customization, and rapid near-net molding to produce parts of different materials with complex structures, it has become a very promising additive manufacturing technology, especially in the design and manufacture of integrated ov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105
Inventor 王利民
Owner 王利民
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