Powder-material-oriented SLM/SLS powder laying technology

A powder material and powder spreading technology, applied in the field of SLM/SLS powder spreading process, can solve the problems of difficult to meet the gradient material manufacturing, difficult to meet the personalized gradient material manufacturing, hinder the development of 3D printing, etc., and achieve the effect of improving work efficiency.

Active Publication Date: 2016-12-07
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the powder coating device of the current selective laser melting technology can only process one material at a time, which is difficult to meet the manufacture of personalized gradient material

Method used

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  • Powder-material-oriented SLM/SLS powder laying technology
  • Powder-material-oriented SLM/SLS powder laying technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 It is the basic structure diagram of the powder mixer. The powder channel inlets 1 are symmetrically distributed, and the number is two or more, which can satisfy the manufacture of two or more materials. The angle between the flow channel direction and the vertical direction is 30 degrees.

[0023] The flow controller 2 is located in the middle of the flow channel, and controls the powder flow through the size of the opening. Each flow channel is equipped with a flow controller, and each flow controller cooperates with each other to obtain mixed powder with different proportions.

[0024] The mixer 3 is connected with the powder flow channel, and different kinds of powders are uniformly mixed in the mixer. There is a stirring device in the mixer, which can fully and evenly mix the powder.

[0025] Below the mixer is the outlet (nozzle) 4 of the powder channel, and the evenly mixed powder flows out onto the workbench from the outlet of the channel.

[0026...

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PUM

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Abstract

The invention discloses a powder-material-oriented SLM (selective laser melting)/SLS (selective laser sintering) powder laying technology. Manufacturing through selective powder laying and selective laser melting individual gradient material is achieved. According to the main function, powder of different material components can be precisely laid on a powder bed in a fixed-point manner through a plurality of spraying heads, and then, through SLM/SLS manufacturing, continuous gradient changes of materials between different portions can be achieved. Along the material proportioning line, powder laying is carried out, through cooperation of all flow controllers, mixed powder with different proportions can be obtained, the proportion of different kinds of powder can be adjusted in advance, and then powder laying is carried out; in the powder laying process, the proportion of different kinds of powder can be dynamically adjusted, and continuous gradient changes of the materials between the different portions can be achieved.

Description

technical field [0001] The invention relates to a powder spreading process, in particular to a powder material-oriented SLM / SLS powder spreading process. Background technique [0002] Large bone defects seriously affect human health and quality of life of patients, and become a serious social problem. At present, orthopedics and surgery urgently require prostheses with multi-material gradient structures to meet the different needs of different parts for the mechanical properties of materials. For example, the artificial articular surface requires high strength and good wear resistance, and cobalt-based alloys can be used, while the joint stem requires light weight, good biocompatibility, high specific strength and avoiding stress shielding, and titanium alloys are generally used. [0003] Additive Manufacturing (AM), that is, 3D printing technology, is known as an important symbol of the third industrial revolution and has important applications in the medical field. Using...

Claims

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Application Information

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IPC IPC(8): B22F3/105B33Y10/00
CPCB33Y10/00B22F10/00B22F12/55B22F12/30B22F12/53B22F10/34B22F10/28B22F12/37Y02P10/25
Inventor 刘亚雄安超张博孙畅宁曹毅赵广宾王亚宁李涤尘贺健康连芩王玲
Owner XI AN JIAOTONG UNIV
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