Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Method and device for real-time detection and control of rotation of hollow stud welding arc

A real-time detection, stud welding technology, applied in the direction of electrode support device, cleaning method using liquid, arc welding equipment, etc., can solve the problems of non-welding, welding arc cannot be effectively rotated, etc., to achieve simple operation and improve welding success The effect of high rate and high efficiency

Active Publication Date: 2020-04-28
NANJING UNIV OF SCI & TECH +1
View PDF10 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for detecting and controlling the rotation of the hollow stud welding arc in real time during welding for the phenomenon that the welding arc cannot be effectively rotated when the hollow steel stud is welded to the steel plate, resulting in non-welding

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 and device for real-time detection and control of rotation of hollow stud welding arc
  • Method and device for real-time detection and control of rotation of hollow stud welding arc
  • Method and device for real-time detection and control of rotation of hollow stud welding arc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Take the welding of a Q235 hollow stud with a diameter of 20mm at a welding current of 800A and a magnetic field current of 0.34A as an example.

[0035] 1. Connect the stud welding robot, welding machine, magnetic field control power supply, CCD high-speed camera and computer according to the figure 2 The installation diagram shown completes the connection;

[0036] 2. Use fine sandpaper to polish the end face of the 20mm hollow stud to be welded and the base metal to be welded, and then clean it with acetone and dry it quickly;

[0037] 3. Start the automatic stud welding robot, control the robot to grip the stud to the welding position, control the welding torch to complete the preload, set the welding current to 800A, the welding time to 1450ms, the initial current of the magnetic field control power supply to 0.34A, and start the drawn arc welding torch for welding ;

[0038] 4. During the welding process, the welding process is photographed by the CCD high-speed...

Embodiment 2

[0047] Take the welding of Q235 hollow studs with a diameter of 20mm under a magnetic field of 0.52A as an example.

[0048] 1. Connect the stud welding robot, welding machine, magnetic field control power supply, CCD high-speed camera and computer according to the figure 2 The installation diagram shown completes the connection;

[0049] 2. Grind the end face of the 20mm hollow stud and the base metal area to be welded with fine sandpaper, then clean it with acetone and dry it quickly;

[0050] 3. Start the automatic stud welding robot, control the robot to grip the stud to the welding position, control the welding torch to complete the preload, set the welding current to 900A, the welding time to 1450ms, the initial current of the magnetic field control power supply to 0.52A, and start the drawn arc welding torch for welding ;

[0051] 4. During the welding process, use the CCD high-speed camera to shoot the welding process, and set the shooting parameters of the CCD high-...

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
Shear strengthaaaaaaaaaa
Shear strengthaaaaaaaaaa
Shear strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for real-time detection and control of rotation of a hollow stud welding arc. The method for real-time detection and control of the rotation of the hollow stud weldingarc comprises the steps that a welding machine is adjusted, welding parameters are set for welding, and a CCD high-speed camera is used for shooting; a computer intercepts collected pictures and intercepts the pictures containing arc information; a global threshold algorithm is used for processing the arc motion state pictures which are intercepted; images are subjected to digital morphological processing, and interference information such as splashing droplets and reflections is eliminated by the corrosion and expansion morphology operation to obtain the original morphology of the arc; the MATLAB is used for contour extraction, and the contour of the arc is extracted; and a computer simulates the central axis of the contour of the arc, and the offset of the arc is calculated by coincidence comparison. The offset is compared with set data, if an error occurs, feedback to a controller is carried out in time to adjust the field current to control the magnetic field strength of the rotating arc. The morphology of the hollow stud welding arc can be detected and controlled in real time, and the arc is controlled to rotate uniformly, so that the situation of non-welding in the welding process of the hollow stud welding arc is effectively avoided.

Description

technical field [0001] The invention relates to the field of connection between hollow steel studs and steel plates, in particular to a method and device for real-time detection and control of hollow stud welding arc rotation. Background technique [0002] Stud welding is a welding method that welds a screw or column of metal to the surface of a metal sheet. The basic principle is: the top of the stud is placed on the flat surface of the steel plate to be welded by the air claw of the head of the welding torch to generate a pre-welding current, and then the stud is lifted to generate an arc between the stud and the steel plate, and the contact part is partially melted to form a weld. Finally, the stud is pressed into the molten pool at a certain speed, and the liquid metal is cooled to realize the metallurgical bond between the stud and the steel plate. Widely used in automobile manufacturing, shipbuilding, locomotives, aviation, medical equipment, boilers, chemical equipme...

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): B23K9/20B23K9/28B23K9/32B08B3/08
CPCB23K9/20B23K9/28B23K9/32B08B3/08
Inventor 张德库柏伟冯永和孙虎高金良
Owner NANJING UNIV OF SCI & 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
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