Method and device for improving quality of narrow lap welder weld joint

A lap welding and quality technology, applied in the field of metallurgical welding, can solve the problems of inability to detect weld defects online, inability to directly detect and evaluate weld quality, etc.

Active Publication Date: 2019-04-05
BAOSHAN IRON & STEEL CO LTD
View PDF16 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In the welding process of the narrow lap welder, only the welding state variables (welding current, welding pressure) are monitored to estimate the weld quality, but the weld quality cannot be directly detecte

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 improving quality of narrow lap welder weld joint
  • Method and device for improving quality of narrow lap welder weld joint
  • Method and device for improving quality of narrow lap welder weld joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0167] System parameters

[0168] For narrow lap resistance welding, the welding situation of the substrate thickness is 0.14-0.19mm.

[0169] The temperature measuring probe 15 is anti-electromagnetic interference and dust-proof. When installing, the vertical distance between the temperature measuring point and the welding seam 6 is 3mm, and the linear distance from the center of the lower welding wheel 8 is 105mm, so as to ensure that the center of the temperature measuring point and the center of the welding wheel Alignment, synchronous movement with welding machine.

[0170] The pulsed eddy current probe 1 is used to detect the quality of the weld after welding, which is installed behind the roller 3 on the narrow lap resistance welding machine, at a distance of more than 1m from the upper welding wheel, and moves synchronously with the welding machine to ensure real-time detection . The advantage of using pulsed eddy current testing is that the detection sensitivity is ...

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 method and device for improving the quality of a narrow lap welder weld joint. The method comprises the steps that (1), automatic tracking of a temperature probe on the weldjoint is controlled; (2), the temperature detected by the temperature measuring probe is kept constant; and (3), online detection and evaluation are conducted on the quality of the weld joint. Onlinedetection and evaluation on the quality of the weld joint comprise the steps that the optimum temperature detected by the temperature measuring probe when welding is conducted is determined; a weldingexperiment is conducted on a substrate plate, an optimum quality information curve and a maximum defect tolerance quality curve are determined, and a quality curve database is built; and the qualityinformation curve is matched with a weld joint quality information curve detected in real time, if the similarity of the quality information curve (the optimum curve similarity) in the database and the weld joint quality information curve detected in real time is 80% or above, a display module displays 'qualified', and if the similarity of the quality information curve (the optimum curve similarity) in the database and the weld joint quality information curve detected in real time is 80% or below, the display module displays 'unqualified', and an alarming device conducts alarming reminding.

Description

Technical field: [0001] The invention relates to the technical field of metallurgical welding, in particular to a method and a device for improving the quality of weld seams of narrow lap welders in the welding technology of thin plate strip coil joints. Background technique [0002] In order to ensure the continuity of tinplate production, before the substrate enters the pickling process section, the forward strip and the subsequent strip need to be connected by welding. [0003] During the entire electroplating process, the substrate will repeatedly withstand bending under high tension after passing through the tension roller, and the welded seam connection will often be broken. The broken belt will cause damage to the work roll, and even cause the shutdown of the entire unit, reduce production efficiency, and cause great losses to the production of tinplate. [0004] Since the average thickness of the thin gauge of the tinplate is usually only about 0.15mm, the connectio...

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): B23K31/12B23K37/00
CPCB23K31/125B23K37/00
Inventor 龚辉李宏李辉唐智雁
Owner BAOSHAN IRON & STEEL CO LTD
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