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

A method of ultra-high-speed laser cladding complex curved surface of revolution

A technology of laser cladding and complex curved surfaces, applied in the direction of improving energy efficiency, process efficiency, additive manufacturing, etc., can solve problems such as different surface cladding line speeds, huge differences in cladding quality and coating thickness, and achieve quality Good, guaranteed cladding efficiency, uniform thickness

Active Publication Date: 2022-06-21
JIANGSU UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for complex gyratory with changing radius of gyration, along with the radius of gyration R 回 If the same cladding strategy is maintained, it will lead to different cladding speeds on the surface and changes in the cladding overlap rate. For ultra-high-speed cladding, the cladding quality and Huge variation in coating thickness

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 method of ultra-high-speed laser cladding complex curved surface of revolution
  • A method of ultra-high-speed laser cladding complex curved surface of revolution
  • A method of ultra-high-speed laser cladding complex curved surface of revolution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0047] like figure 2 As shown in the figure, the cross-sectional profile of the to-be-clad surface of a certain roller part is approximately a parabola, the diameter of both ends is Φ400mm, the middle diameter is Φ200mm, and the length is 400mm. The surface is subjected to single-layer ultra-high-speed laser cladding and cladding powder. Iron-based stainless steel powder is selected, and the cladding process is carried out through the following process steps.

[0048] First, set the cladding line speed V=30 / min=500mm / s, laser beam power P=5kW, ultra-high-speed laser cladding defocus amount H=12mm, cladding overlap ratio δ=0.6 and ultra-high-speed laser cladding according to process requirements. Cladding single track width D L After many tests, it is 2.5mm; the cladding path node is set on the bus line of the axial cross-sectional profile of the complex curved body of revolution; by controlling the rotational angular velocity ω of the workpiece during the cladding process i...

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
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to laser cladding technology, in particular to a method for ultra-high-speed laser cladding of a complex curved surface revolving body. In this method, parameters such as the cladding line speed V are first set according to the process requirements; according to the lap rate δ and the width D L Parameters, the fitting calculation is performed on the profile generatrix of the complex curved surface, and the ultra-high-speed laser cladding path of the complex curved surface is set as an i-segment space helix; the rotation angular velocity ω when the ultra-high-speed laser cladding complex curved surface is obtained i and the moving speed of the laser cladding head along the X-axis along the Y-axis and the rotational angular speed of the laser cladding head ε i , to ensure that the cladding line speed V remains stable. Through this method, the relative motion between the ultra-high-speed laser cladding head and the high-speed rotating complex rotary body can be efficiently regulated, effectively ensuring the stability of the parameters in the ultra-high-speed laser cladding process, and stabilizing the cladding efficiency while ensuring the cladding quality. Good metallurgical bonding, dense and uniform cladding layer.

Description

technical field [0001] The invention relates to a laser cladding technology, in particular to a method for ultra-high-speed laser cladding of a complex curved surface revolving body. Background technique [0002] In 2017, the Ultra High-Speed ​​Laser Cladding technology (Ultra High-Speed ​​Laser Cladding) proposed by the Fraunhofer Institute in Germany, the cladding rate can reach 25-200m / min, and the laser is focused on the workpiece during processing, so that most of the energy is used. For the powder above the workpiece, using this method, the heat input of the matrix during the cladding process is extremely small, but it can ensure that the powder and the matrix are fully metallurgically combined, and the general dilution rate is only about 2 to 4%. Therefore, ultra-thin and high-quality coatings can be prepared. According to different cladding rates, the thickness of the coating is basically only between 25 and 400 μm, and the surface finish of the coating is very good....

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): B22F3/105B33Y10/00B33Y50/02
CPCB33Y10/00B33Y50/02B22F10/00B22F10/25B22F10/36B22F12/46B22F10/366B22F10/80
Inventor 鲁金忠杜家龙徐祥罗开玉
Owner JIANGSU UNIV
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