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

Flux-cored wire for improving welding performance and preparation method thereof

A flux-cored welding wire and welding performance technology, applied in welding equipment, welding media, welding/cutting media/materials, etc., can solve problems such as poor self-protection effect, poor arc stability, and coarse grains, etc., to improve melting Coating efficiency, optimization of welding wire self-protection effect, and effect of grain size reduction

Active Publication Date: 2021-12-31
JIANGSU UNIV OF SCI & TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of poor self-protection effect, coarse crystal grains and poor arc stability in the existing slag-free self-shielding flux-cored welding wire, this solution prevents the welding wire from Moisture can refine grains, enhance wear resistance and oxidation resistance, increase weld hardness, and improve impact toughness

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
  • Flux-cored wire for improving welding performance and preparation method thereof
  • Flux-cored wire for improving welding performance and preparation method thereof
  • Flux-cored wire for improving welding performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] Examples, see Figure 1-7 , a flux-cored wire for improving welding performance, whose components are weighed according to mass percentage as follows: 6.5% Mg powder, 35% Fe powder, 2.0% Al powder, 11.5% Cr powder, 3.0% V powder, 0.05% fluorinated graphene and 41.95% titanium carbide.

[0031] The present invention also improves a preparation method of a flux-cored wire for improving welding performance, comprising the following steps:

[0032] (1) After mixing 6.5% Mg powder, 35% Fe powder, 2.0% Al powder, 11.5% Cr powder, 3.0% V powder, 0.05% fluorinated graphene and 41.95% titanium carbide Stir the powder evenly;

[0033] (2) Ultrasonic cleaning the steel strip under the condition of 20°C-40°C, the ultrasonic time is 180-300s;

[0034] (3) drying the medicinal powder obtained in step (1) at a temperature of 200° C. to obtain a dried mixture;

[0035] (4) Place the dried powder in the powder feeding container of the flux cored wire manufacturing machine;

[0036]...

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a flux-cored wire for improving welding performance and a preparation method thereof. A flux-cored wire mixture is prepared from, by mass, 6.5% of Mg powder, 35% of Fe powder, 2.0% of Al powder, 11.5% of Cr powder, 3.0% of V powder, 0.05% of fluorinated graphene and 41.95% of titanium carbide. The microstructure of deposited metal formed by using the welding wire is composed of titanium carbide and a matrix, a crystal form main body of the deposited metal is martensite, and part of austenite remains on the martensite edge. Compared with the prior art, the flux-cored wire in the scheme has the beneficial effects that the droplet transition period of the welding wire is prolonged, the metallurgical reaction behavior is intensified, and the self-protection effect of the welding wire is further optimized; after improvement, the splashing rate is low; and the action effect on a molten pool is enhanced, the slag splashing behavior is less, the deposition efficiency is improved, a certain influence on macroscopic forming of a welding seam is achieved, and the wear resistance and the oxidation resistance are enhanced. The welding wire is prevented from being damped, and air holes are reduced. The method has the effects of refining grains, improving the weld hardness and improving the impact toughness.

Description

technical field [0001] The invention relates to the field of welding materials, and specifically refers to a flux-cored welding wire for improving welding performance and a preparation method thereof. Background technique [0002] At present, among many welding materials, slag-free self-shielding flux-cored wire has a high degree of automation, no need for additional gas supply, high efficiency and energy saving, no need for slag cleaning in multi-layer welding, and obvious energy saving and consumption reduction effects. It is one of the welding materials with the most development potential. But at the same time, there are also problems such as poor self-protection effect, easy damp welding wire, pores in the weld bead, poor weld toughness, coarse grains due to overheating, and poor arc stability. [0003] Titanium carbide is a black powder with high temperature resistance, oxidation resistance, high strength, high hardness, good thermal conductivity, and good toughness. Ti...

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 Applications(China)
IPC IPC(8): B23K35/30B23K35/368B23K35/40
CPCB23K35/308B23K35/3601B23K35/368B23K35/0266B23K35/404
Inventor 魏萍刘大双吴铭方胡庆贤
Owner JIANGSU UNIV OF SCI & TECH
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