Process method for laying forming for multi-material area of powder bed

A process method and multi-material technology, applied in the field of multi-material additive manufacturing, can solve the problems of limited types and high equipment space occupancy, and achieve the effects of preventing agglomeration, low cost, and simple process steps

Active Publication Date: 2017-09-05
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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  • Process method for laying forming for multi-material area of powder bed

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Comparison scheme
Effect test

Embodiment 1

[0044] Utilize the method of the present invention to prepare the stainless steel parts with nickel wear-resistant coating on the surface, concrete 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 2 mm. Layer 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 nickel composition is stored in the mobile ultrasonic vibration micro powder feeding system, and the information of the stainless steel composition is stored in the SLM main equipment control system.

[0046] (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 X-Y plane; place the spherical...

Embodiment 2

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

[0052] (1) According to the thickness requirements of the thermal barrier coating, the three-dimensional distribution of the coating on the inner and outer surfaces of the nickel-based superalloy parts is designed, and the coating thickness is 20mm. Carry out 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, write the relative motion program of the ultrasonic vibration micro-powder feeding system in the X-Y p...

Embodiment 3

[0058] Using the method of the present invention to prepare a pure titanium porous stent 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 requirements of the niobium coating, and the coating thickness is 5 mm. Layer 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 composition is stored in the mobile ultrasonic vibration micro-powder feeding system, and the information of the pure titanium composition 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 X-Y plane; place the spher...

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Abstract

The invention belongs to the field of multi-material additive manufacturing, and discloses a process method for laying forming for a multi-material area of a powder bed. The process method comprises the following steps: (a) designing the three-dimensional structure and materials of a part, and layering the three-dimensional structure and identifying the material components and shape outline of each layer; (b) laying a subject powder and an object powder; (c) carrying out laser melting on the laid slice layer; and (d) descending the slice layer by the thickness of one powder laying layer, and repeating the abovementioned steps to complete forming for other slice layers. Through the process method disclosed by the invention, the formed part has many specific functions, the preparation efficiency of the multifunctional part is increased, and a 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 multi-material areas of a powder bed. 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 (Selective Laser Melting, SLM) is based on layer-by-layer manufacturing. The use of high-energy laser beams to form metal parts with fine and complex structures has become one of the main directions for the application of metal additive manufacturing technology with the advantages of integra...

Claims

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Application Information

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Patent Type & Authority Applications(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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