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

A method for synchronous regulation of f/a ratio in double-metal penetrating laser welding multi-layer structure

A bimetal, laser welding technology, applied in laser welding equipment, metal processing equipment, welding equipment and other directions, can solve the problem of joint corrosion resistance decline and other problems, and achieve the effect of increasing austenite content

Active Publication Date: 2021-07-13
XI AN JIAOTONG UNIV
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a method for synchronous regulation and control of the F / A ratio of bimetallic penetration laser welding cladite structure, to solve the problem of bimetallic material penetrating laser welding seam cladding duplex stainless steel (DSS) ferrite (F) , Austenite (A) ratio imbalance caused by joint corrosion resistance decline

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 for synchronous regulation of f/a ratio in double-metal penetrating laser welding multi-layer structure
  • A method for synchronous regulation of f/a ratio in double-metal penetrating laser welding multi-layer structure
  • A method for synchronous regulation of f/a ratio in double-metal penetrating laser welding multi-layer structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In this embodiment, a YLS-4000 fiber laser connected in series with a MIG welding torch is used to perform laser welding on a DSS2205 / X65 layered bimetallic composite board. The specific operation steps are as follows:

[0036] (1) Process the DSS2205 / X65 layered bimetal composite plate with a thickness of 18 mm as a sample. After processing, the size and shape of the test plate are as follows: Figure 2a and Figure 2b As shown, close to the side of the cladding DSS2205 of the composite board, the thickness of the base material X65 is reserved for 1mm, and the remaining 2mm thick cladding constitutes a total thickness of 3mm "I" type groove, above the "I" type groove, taking into account MIG welding torch space requirements, welding efficiency and weld forming quality and other factors, adopt the form of inverted trapezoidal groove, the width of the bottom of the groove is 3mm, and the opening angle of the groove is 60°;

[0037] (2) Before performing butt welding on...

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
Login to View More

Abstract

A method for synchronous regulation and control of the F / A ratio of bimetallic penetration laser welding of multilayer structures, which uses laser welding technology to perform penetration welding on the layered bimetal workpiece to be welded; during the laser welding process of the layered bimetal workpiece to be welded, the laser An auxiliary heat source is applied behind the laser beam, and the synchronous optimization of the laser weld structure is realized through the thermal action of the auxiliary heat source. In the laser welding process of layered bimetallic materials, the invention applies an auxiliary heat source behind the laser beam, and through the reheating effect of the heat source, the heat cycle in the welding process is changed, so that the clad layer DSS structure of the weld seam is at the austenite transformation temperature The section stays for more time, thereby increasing the austenite content, and synchronously optimizes the structure of the dual-phase steel side of the weld, so that the unbalanced structure due to the decrease of the austenite content is close to the balance ratio of 1:1 again.

Description

technical field [0001] The invention belongs to the field of welding technology, and in particular relates to a method for synchronous regulation and control of the F / A ratio of bimetallic penetration laser welding multilayer tissue. Background technique [0002] Layered bimetallic composite materials use low-cost carbon steel as the base layer, and use corrosion-resistant materials such as stainless steel with good corrosion resistance as the cladding layer, which can meet the requirements of mechanical properties and corrosion resistance. Compared with corrosion-resistant alloy steel, it greatly reduces the cost of corrosion resistance in industrial production and transportation, and is widely used in many fields. [0003] Duplex stainless steel has a duplex structure of ferrite (F) + austenite (A), and the F / A ratio is close to 1:1. It combines the characteristics of austenitic stainless steel and ferritic stainless steel in performance, and has excellent The toughness o...

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): B23K26/348B23K26/70
CPCB23K26/348B23K26/70B23K26/702
Inventor 张建勋张小凡苟宁年杨寿康牛靖白嘉瑜
Owner XI AN JIAOTONG 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