Method for reducing pore defect of laser-cladding formed parts

A laser cladding molding and laser cladding technology, applied in the field of additive manufacturing, can solve the problems of difficulty in completely eliminating pore defects and the effect of concentration of gas in the molten pool, achieving a simple and efficient experimental plan and reducing porosity defects. , the effect of good packing speed

Active Publication Date: 2017-12-22
DALIAN UNIV OF TECH
View PDF3 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for the above three methods to exert a concentrated effect ...

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
  • Method for reducing pore defect of laser-cladding formed parts
  • Method for reducing pore defect of laser-cladding formed parts
  • Method for reducing pore defect of laser-cladding formed parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0033] 1) Clean the cladding substrate 5 according to the conventional cleaning method in this field: immerse the cladding substrate 5 in an acetone solution, and clean it with an ultrasonic cleaner at a temperature of 30-40°C for 20-25 minutes, thereby removing the cladding substrate 5 surface dirt; after the cleaning is completed, dry the acetone solution remaining on the surface of the cladding substrate 5 .

[0034] 2) The cladding substrate 5 is placed in the constant magnetic field generator 3 so that it is in a uniformly distributed directional magnetic field environment. After the cladding substrate 5 is placed, fix it with a clamp to avoid position shift under the action of subsequent electromagnetic force.

[0035] 3) Connect the cladding substrate 5 with the positive and negative poles of the DC...

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 belongs to the technical field of additive manufacturing, and relates to a method for reducing the pore defect of laser-cladding formed parts. A laser device is used for providing an energy source in the laser cladding process and is further equipped with an industrial robot used for assisting free-moving of a laser beam. A coaxial powder feeder is used for providing stable material input in the laser cladding process and carried on the laser device. A steady-state magnetic field generator is used for outputting an intensity-adjustable directional uniform magnetic field, and in the carrying process, a clad matrix is placed in the center of the steady-state magnetic field generator. A direct-current power supply is used for outputting current-value-adjustable direct-current power for the matrix material, and the positive and negative electrodes of the direct-current power supply communicate with the clad matrix. According to the method, uniform acting force can be exerted in a molten bath, gas buoyant force is increased, and porosity defects such as pores are reduced. The feeding speed in the molten bath solidification process is increased, and the density of the laser-cladding formed parts is improved. The experiment scheme is simple and efficient.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and relates to a method for reducing air hole defects of laser cladding molding parts, in particular to a method for reducing air hole defects of laser cladding molding parts and improving their compactness. Background technique [0002] Laser cladding technology uses a high-energy-density laser beam to make the cladding material added on the surface of the substrate and the surface material of the substrate undergo a process of rapid melting and solidification. After laser cladding, the cladding layer forms a good metallurgical bond with the substrate surface. Compared with traditional welding, spraying and other processing methods, laser cladding has the advantages of small heat input, fine grains of cladding layer, low dilution rate and compact structure. The use of laser cladding technology can achieve special properties such as high wear resistance, corrosion resistance, and ...

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
IPC IPC(8): C23C24/10B22F3/105B22F7/06B33Y10/00
CPCC23C24/10B22F7/062B33Y10/00B22F2007/068B22F2999/00B22F10/00B22F10/36B22F10/25B22F10/366B22F12/50B22F10/322B22F2202/05Y02P10/25
Inventor 刘伟嵬张楠邓德伟张元良李涛刘淑杰郑海彤张洪潮
Owner DALIAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap