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

High-strength and high-toughness metal powder flux-cored wire

A technology of metal powder core and flux cored wire, applied in metal processing equipment, welding medium, welding equipment, etc., to achieve good anti-knock performance, stable mechanical properties, and excellent seawater corrosion resistance

Inactive Publication Date: 2011-09-14
WUHAN TEMO WELDING CONSUMABLES CO LTD
View PDF7 Cites 36 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no supporting flux-cored welding wire for structural steel with a tensile strength greater than 900MPa (see Table 1)

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
  • High-strength and high-toughness metal powder flux-cored wire
  • High-strength and high-toughness metal powder flux-cored wire
  • High-strength and high-toughness metal powder flux-cored wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The steel sheath of the flux-cored wire is made of low-carbon steel strip, and its chemical composition and content in % by weight of the steel strip are shown in Table 2.

[0056] Chemical composition of table 2 steel strip

[0057]

Embodiment 2

[0059] The chemical composition and raw material composition of the drug core powder are shown in Table 3.

Embodiment 3

[0061] The low-carbon steel strip (14X9mm) is filled with core powder, the filling rate is 16-22%, and the diameter is reduced by drawing to form a finished welding wire with a diameter of 1.2-1.6mm.

[0062] According to the content ratio of each component of the flux core, different diameters of flux-cored wires were drawn by different filling ratios for testing. The composition ratio, flux core diameter and filling ratio are shown in Table 4.

[0063] Table 3 Composition of drug core powder

[0064]

[0065] Table 4 Composition ratio, drug core diameter, filling rate test

[0066] serial number

[0067] Ni

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
Yield strengthaaaaaaaaaa
Strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a high-strength and high-toughness metal powder flux-cored wire which comprises a carbon steel sheath (weight percentage: 78-84%) and a flux core (weight percentage: 16-22%), wherein the flux core comprises the following components in percentage by weight: 0.10-1.5% of TiO2, 0.10-0.5% of SiO2, 0.02-0.20% of Na2O+K2O, 0.2-0.7% of Si, 0.04-0.44% of Mg+Al, 0.02-0.18% of C, 0.05-0.30% of Zr, 1.2-2.6% of Mn, 0.6-1.4% of Cr, 3.0-5.0% of Ni, 0.4-2.0% of Mo, 0.2-1.0% of one or two of NaF or CaF2 and the balance of Fe and inevitable impurities. Through adopting a metal powder cored slag system and cooperating with the protection of argon-rich mixed gas (consisting of 80% of Ar and 20% of CO2), the high-strength and high-toughness metal powder flux-cored wire provided by the invention is mainly applicable to downward welding and horizontal fillet welding. In addition, the high-strength and high-toughness metal powder flux-cored wire is good in welding process adaptability, stable in mechanical performance, good in cold cracking resistance, fine in seawater corrosion resistance and excellent in anti-explosion performance; and meanwhile, the yield ratio of weld metalsis below 0.87, and the diffusible hydrogen in deposited metals reaches an ultra-low hydrogen level.

Description

technical field [0001] The invention relates to a welding material for metal welding, in particular to a high-strength and high-toughness metal powder-cored flux-cored welding wire. Background technique [0002] Flux-cored welding wire is a high-efficiency welding material developed in the 1950s. It has many advantages such as high welding efficiency, short welding cycle, fast construction progress, good welding process performance, beautiful weld shape, and small welding deformation. Therefore, it is widely used in ships, bridges, etc. It has been standardized in the field of steel structure welding. [0003] With the continuous development of iron and steel smelting technology, in order to reduce construction costs and save steel, various high-strength steels are widely used in ships, marine engineering, bridges and other fields, especially in the cold working conditions in the north, which require that the weld metal should have good low-temperature impact Toughness, ste...

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): B23K35/24B23K9/16
Inventor 刘玉双韩海峰杜晓琪吕奎清田海成李磊
Owner WUHAN TEMO WELDING CONSUMABLES 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
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