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

A scanning forming method for improving the forming quality of metal parts additive manufacturing

A molding method and technology of metal parts, applied in the field of scanning molding, can solve the problems of low molding efficiency, affecting the quality of powder coating, and uneven powder coating, and achieve the effects of improving density, reducing the probability of warping defects, and reducing thermal stress

Active Publication Date: 2018-05-15
SOUTH CHINA UNIV OF TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current scan forming method for support is to scan the contour of each layer, which is less efficient in forming, and too many support scans will affect the quality of powder coating during molding, and it is easy to cause uneven powder coating

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
  • A scanning forming method for improving the forming quality of metal parts additive manufacturing
  • A scanning forming method for improving the forming quality of metal parts additive manufacturing
  • A scanning forming method for improving the forming quality of metal parts additive manufacturing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] Such as figure 1 As shown, after the laser beam is focused by the metal additive manufacturing equipment, a processing point with concentrated energy (focused laser spot 1) will be obtained, and the metal powder will be melted through the processing point. However, there is a heat-affected zone at the processing point, which makes the forming melt channel wider than the processing point. The size of the forming melt channel 2 is a relatively important parameter, and the scanning parameters should be adjusted according to the size in the scanning forming.

[0034] Especially when scanning the contours of supports and parts, processing compensation is required, and the compensation value is usually set to half the size of the forming melt channel 2.

[0035] Such as figure 2 and image 3 As shown, if the laser spot compensation is not set during processing, when scanning the edge of the contour, the scanning track 5 at the center of the laser spot coincides with the t...

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

No PUM Login to View More

Abstract

The invention discloses a scanning molding method for improving the molding quality of metal parts additive manufacturing. The method divides the scanning method into two parts: support scanning and entity scanning. Contour offset scanning and internal square partition scanning are combined. After the solid contour shell is scanned, the interior is deflected layer by layer and partitioned, and the interior is filled with 5*5mm‑10*10mm squares according to the size of the part. The direction of the scanning line between two adjacent block partitions is 90° orthogonal, and the diameter of the focused spot is increased by adjusting the optical path to improve the processing efficiency when the object is scanned inside the part. Rotating the internal partition blocks of the interlayer cross-section by 60° layer by layer not only prevents the overlapping of the upper and lower blocks, eliminates edge protrusion defects as much as possible, but also prevents stress accumulation defects generated during the multi-layer accumulation process. This method can be widely used in the field of additive manufacturing.

Description

technical field [0001] The invention relates to the field of additive manufacturing of metal parts, in particular to a scanning forming method for improving the forming quality of additive manufacturing of metal parts. Background technique [0002] Additive manufacturing, also commonly known as 3D printing, is a technology that uses CAD design data to accumulate material layer by layer to manufacture solid parts. Compared with traditional material removal (cutting) technology, it is a "bottom-up" material accumulation process. Manufacturing method. Compared with traditional manufacturing technologies, additive manufacturing has the advantages of being able to form parts with complex shapes, high forming precision, and saving materials. Metal additive manufacturing has become the most popular manufacturing technology because it can directly manufacture high-precision metal parts with dense structure and metallurgical bonding. [0003] At present, the forming materials of me...

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 Patents(China)
IPC IPC(8): B22F3/105B33Y10/00
CPCB33Y10/00B22F10/00B22F10/38B22F10/36B22F10/366B22F10/364B22F10/47B22F10/28Y02P10/25
Inventor 王迪杨永强邓诗诗张自勉
Owner SOUTH CHINA UNIV OF 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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com