A method for laying and forming powder bed multi-material areas

A process method and multi-material technology, applied in the field of multi-material additive manufacturing, can solve the problems of high equipment space occupancy rate and type restrictions, and achieve the effects of low cost, prevention of agglomeration and agglomeration, and simple process steps.

Active Publication Date: 2020-05-19
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To a certain extent, the above research can realize the manufacture of personalized parts with double gradient distribution of materials and structures, but the space occupation rate of the equipment is too high, and the formed metal materials require specific properties, and the types are greatly limited

Method used

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  • A method for laying and forming powder bed multi-material areas
  • A method for laying and forming powder bed multi-material areas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Using the method of the present invention to prepare stainless steel parts with a nickel wear-resistant coating on the surface, the specific steps are as follows:

[0045] (1) Design the three-dimensional distribution of the coating on the inner and outer surfaces of the stainless steel parts according to the thickness requirements of the wear-resistant coating, and the coating thickness is 2mm. Layer processing along the processing direction, slice and identify each layer of information. The information of the nickel component area is stored in the mobile ultrasonic vibration micro powder feeding system, and the stainless steel component information is stored in the SLM main equipment control system.

[0046] (2) According to the material distribution results of each slice layer section, compile the relative motion program of the ultrasonic vibration micro powder feeding system in the XY plane; place the spherical stainless steel powder in the powder feeding cylinder and the...

Embodiment 2

[0051] Using the method of the present invention to prepare nickel-based superalloy parts with alumina thermal barrier coating on the surface, the specific steps are as follows:

[0052] (1) Design the three-dimensional distribution of the coating on the inner and outer surfaces of the nickel-based superalloy parts according to the thickness requirements of the thermal barrier coating, and the thickness of the coating is 20mm. Perform layering processing along the processing direction, slice and identify the information of each layer. The information of the area containing the alumina composition is stored in the mobile ultrasonic vibration micro powder feeding system 1, and the information of the nickel-based superalloy composition is stored in the SLM main equipment control system .

[0053] (2) According to the material distribution results of each slice layer section, compile the relative motion program of the ultrasonic vibration micro powder feeding system in the XY plane; pl...

Embodiment 3

[0058] Using the method of the present invention to prepare a pure titanium porous scaffold with a biocompatible niobium coating on the surface, the specific steps are as follows:

[0059] (1) Design the three-dimensional distribution of the coating on the inner and outer surfaces of the pure titanium porous stent according to the thickness of the niobium coating. The thickness of the coating is 5mm. The layered processing is carried out along the processing direction, and the information of each layer is sliced ​​and identified. The information of the area containing the niobium content is stored in the mobile ultrasonic vibration micro powder feeding system, and the information of the pure titanium content is stored in the SLM main equipment control system.

[0060] (2) According to the material distribution results of each slice layer section, write the relative motion program of the ultrasonic vibration micro powder feeding system in the XY plane; place the spherical pure titani...

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Abstract

The invention belongs to the field of multi-material additive manufacturing, and discloses a powder bed multi-material area laying and forming process method, including: (a) designing the three-dimensional structure and material of the part, layering the three-dimensional structure and identifying the part of each layer Material composition and shape profile; (b) placement of host and guest powder; (c) laser melting of the placed slice layer; (d) slice layer down one powder layer thickness, repeat the above steps to complete the formation of other slice layers . Through the invention, the formed parts have multiple specific functions, the preparation efficiency of the multifunctional parts is improved, and the preparation process flow is simplified.

Description

Technical field [0001] The invention belongs to the field of multi-material additive manufacturing, and more specifically, relates to a process method for laying and forming a powder bed with multi-material regions. Background technique [0002] With the increasing demand for the complexity of parts in industrial manufacturing, the requirements for design freedom, forming efficiency and comprehensive performance of parts are more stringent. At present, most commercial laser selective melting systems are only suitable for single-material product manufacturing. Compared with traditional manufacturing, product quality and performance still need to be improved. Among them, Selective Laser Melting (SLM) is based on layer-by-layer manufacturing. In this way, the use of high-energy laser beams to form metal parts with fine and complex structures, and the advantages of integrated structure and function design and manufacturing, short cycle times, and no molds have become one of the main ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B33Y10/00
CPCB33Y10/00B22F2999/00B22F10/00B22F10/37B22F12/53B22F10/34B22F10/38B22F10/32B22F10/28B22F2202/01Y02P10/25
Inventor 魏青松韩昌骏李明李岩王倩刘洁史玉升
Owner HUAZHONG UNIV OF SCI & TECH
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