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Dual-beam laser rapid forming and manufacturing method based on laser ultrasound

A laser rapid prototyping and manufacturing method technology, applied in the direction of improvement of process efficiency, improvement of energy efficiency, additive processing, etc., can solve problems such as insufficient absorption of laser energy, achieve improved heterogeneous nucleation rate, and increase crystal nucleation The effect of enhancing the rate and action effect

Active Publication Date: 2019-05-21
武汉奇造科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the aluminum alloy component itself has good thermal conductivity, which results in insufficient energy absorption of the laser during the aluminum alloy additive manufacturing process.

Method used

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  • Dual-beam laser rapid forming and manufacturing method based on laser ultrasound
  • Dual-beam laser rapid forming and manufacturing method based on laser ultrasound
  • Dual-beam laser rapid forming and manufacturing method based on laser ultrasound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1, a double-beam laser rapid prototyping manufacturing method based on laser ultrasound, which includes the following steps:

[0032] 1. The substrate 7 is made of 6061 aluminum alloy plate with a thickness of 4mm, and the particle size of the powder material in the powder feeder 4 is 200~300 mesh aluminum alloy powder; the substrate 7 is horizontally fixed on the rapid prototyping platform, and the substrate 7 is connected to the positive electrode of the power supply 3 , The main heat source laser 2 is connected to the negative pole of the power supply 3 . Adjust the relative position of the pulse oscillation laser 1 and the main heat source laser 2, so that the main heat source laser beam 6 emitted by the main heat source laser 2 and the pulse oscillation laser beam 5 emitted by the pulse oscillation laser 1 are located on the same plane, and the forward direction of the workbench is used as a reference , the action point of the pulse oscillating laser bea...

Embodiment 2

[0037] Embodiment 2, a double-beam laser rapid prototyping manufacturing method based on laser ultrasound, which includes the following steps:

[0038] 1. The substrate 7 is made of 304 stainless steel plate with a thickness of 4mm, and the particle size of the powder material in the powder feeder 4 is 200~300 mesh austenitic stainless steel powder; the substrate 7 is horizontally fixed on the rapid prototyping platform, and the substrate 7 is connected to the power supply 3 Positive electrode, main heat source laser 2 connected to power supply 3 negative electrode. Adjust the relative position of the pulse oscillation laser 1 and the main heat source laser 2, so that the main heat source laser beam 6 emitted by the main heat source laser 2 and the pulse oscillation laser beam 5 emitted by the pulse oscillation laser 1 are located on the same plane, and the forward direction of the workbench is used as a reference , the action point of the pulse oscillating laser beam is behin...

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Abstract

The invention discloses a dual-beam laser rapid forming and manufacturing method based on laser ultrasound. The method is characterized by adopting a coaxial powder feeding manner through metal powderand laser, taking a laser heat source as a main heat source for melting metal powder and depositing and forming, exciting a laser melting pool by means of high-frequency pulse laser to generate an ultrasonic energy field so as to form a dense and fine-grained deposition layer texture structure in the melting and solidifying process. The method comprises the following steps: (1) adjusting relativepositions of main heat source laser and pulse oscillation laser and enabling energy of a pulse oscillation laser beam to act on a tail area of the molten pool; (2) setting a cooperative working modeof energy of a main heat source laser beam and the pulse oscillation laser beam; (3) setting an action mode of the pulse oscillation laser beam; and (4) starting forming and manufacturing programs andstarting forming and manufacturing processes until a manufacturing process is completed. The dual-beam laser rapid forming and manufacturing method based on laser ultrasound is capable of improving density of molten and solidified structures of materials, increasing heterogeneous nucleation rate in the melting pool, accelerating homogeneous nucleation and enabling grain growth in the solidifyingprocess of the melting pool to be obviously refined.

Description

technical field [0001] The invention relates to three-dimensional rapid prototyping manufacturing, in particular to a laser ultrasonic-based double-beam laser rapid prototyping manufacturing method. Background technique [0002] Three-dimensional rapid prototyping (additive manufacturing) technology is an advanced manufacturing technology developed by the multidisciplinary integration of information technology, new material technology and manufacturing technology. The leading technology for the development of individualized manufacturing models. After just over 20 years, this technology has achieved rapid development, and has broad application prospects in many fields such as aerospace, micro-nano manufacturing, and biomedical engineering. The technical basis of additive manufacturing of metal components is welding / connection. In the past 20 years, two major breakthroughs have been achieved in additive manufacturing at home and abroad: one is from the early laser rapid prot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y10/00
CPCY02P10/25
Inventor 罗怡蔡玉华陈东张福源阳树青彭沛森张荣杨海林
Owner 武汉奇造科技有限公司
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