Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Laser selective melting forming device and method

A technology of laser selective melting and forming equipment, which is applied in the field of additive manufacturing, can solve problems such as anisotropy of holes and cracked columnar crystals, and achieve uniform and stable compounding, improve quality, and improve organizational consistency.

Active Publication Date: 2019-01-08
HUAZHONG UNIV OF SCI & TECH
View PDF10 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of this equipment is to refine the grains, reduce thermal stress, eliminate thermal cracks, pores and columnar crystals by affecting the solidification and crystallization process without changing the material composition, and solve the problem of forming parts in the laser selective melting forming technology. Metallurgical defects such as holes and cracks and anisotropy caused by columnar crystals

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Laser selective melting forming device and method
  • Laser selective melting forming device and method
  • Laser selective melting forming device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0034] see figure 1 , the laser selective melting forming equipment provided by the first embodiment of the present invention, the forming equipment arranges multiple groups of electromagnetic fields and ultrasonic waves around the substrate in the forming cavity, and controls the intensity, direction and frequency of the magnetic field and ultrasonic waves in real time according to needs. U...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
magnetic flux densityaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of the additive manufacturing correlation technique, and discloses a laser selective melting forming device and method. The forming device comprises an industrial personal computer, a magnet exciting coil set, an electronic voltage adjuster, an adjustable resistor, a single-chip microcomputer, an ultrasonic power source and an ultrasonic vibration device. The magnet exciting coil set comprises multiple magnet exciting coils, and the multiple magnet exciting coils and the ultrasonic vibration device are arranged around a substrate of a forming cavity during use. The magnet exciting coils are connected with the industrial personal computer and the adjustable resistor, and the electronic voltage adjuster is connected with the magnet exciting coils and the adjustable resistor. The ultrasonic power source is connected with the single-chip microcomputer and the ultrasonic vibration device. The single-chip microcomputer is further connected to the electronicvoltage adjuster. The industrial personal computer is used for controlling the angle and on-off of the magnet exciting coil set according to different laser scanning phase angles so as to achieve zoning control of a magnetic field. The single-chip microcomputer is used for controlling the amplitude and frequency of the ultrasonic vibration device. According to the laser selective melting formingdevice and method, high-performance laser selective melting forming is achieved, and structure consistency is improved.

Description

technical field [0001] The invention belongs to the technical field related to additive manufacturing, and more specifically relates to a laser selective melting forming equipment and method. Background technique [0002] In recent years, additive manufacturing technology has developed very rapidly and has been widely used in aerospace, biomedicine and other fields. Among them, laser selective melting forming technology can directly manufacture high-performance metal parts from CAD models and metal powder / wire materials. The STL file is sliced ​​according to a certain layer thickness to generate a two-dimensional laser processing trajectory, and the equipment pre-lays / coaxially inputs the metal powder according to the generated processing trajectory. After the scan is completed, the substrate is lowered to a certain depth and the process is repeated until the part is completed, layer by layer to complete the preparation of the entire metal part. [0003] Due to the laser s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y30/00B33Y10/00B33Y40/00
CPCB33Y10/00B33Y30/00B33Y40/00B22F2003/1053B22F10/00B22F10/36B22F12/00B22F10/366B22F10/28B22F10/30Y02P10/25
Inventor 朱海红聂小佳张莎莎胡志恒祁婷齐洋肖中旭曾晓雁
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products