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

460 MPa-grade seamless flux-cored wire suitable for full-position welding and manufacturing method

A technology of seamless flux-cored welding wire and manufacturing method, which is applied in welding medium, manufacturing tools, welding equipment, etc., can solve the problems of high welding material price, unguaranteed supply, and high technical requirements, and achieve excellent seawater corrosion resistance, Beautiful weld shape and stable welding arc

Active Publication Date: 2017-11-17
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 460MPa grade steel plate has good mechanical properties and welding performance, and is widely used in offshore platform equipment, ship construction and bridges, but the matching welding consumables have relatively high technical requirements, especially the stability and crack resistance of low temperature impact toughness are difficult to guarantee , so this level of flux-cored welding wire mainly depends on imports, but the price of foreign welding consumables is relatively high, and the supply cannot be guaranteed, resulting in delays in the construction of offshore platforms, ships and bridges

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
  • 460 MPa-grade seamless flux-cored wire suitable for full-position welding and manufacturing method
  • 460 MPa-grade seamless flux-cored wire suitable for full-position welding and manufacturing method
  • 460 MPa-grade seamless flux-cored wire suitable for full-position welding and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Rutile in drug core powder: 34%, quartz: 2%, sodium fluoride: 1.5%, zircon sand: 2.5%, feldspar: 4%, manganese-silicon alloy: 14%, electrolytic manganese: 3% , Low-carbon ferromanganese: 4%, aluminum-magnesium alloy: 2%, ferroboron: 0.5%, nickel powder: 4%, the balance is iron powder, the powder filling rate is 15%, and the diameter of the welding wire is Ф1.2mm.

Embodiment 2

[0030] Example 2: Rutile in drug core powder: 36%, quartz: 2.5%, sodium fluoride: 2%, zircon sand: 2.5%, feldspar: 4%, manganese-silicon alloy: 14%, electrolytic manganese: 4% , Low-carbon ferromanganese: 4%, aluminum-magnesium alloy: 2.5%, ferro-boron: 0.5%, nickel powder: 5%, the balance is iron powder, powder filling rate 15%, wire diameter Ф1.4mm.

Embodiment 3

[0031] Example 3: Rutile in drug core powder: 40%, quartz: 2.5%, sodium fluoride: 2%, zircon sand: 3%, feldspar: 5%, manganese-silicon alloy: 16%, electrolytic manganese: 5% , Low-carbon ferromanganese: 3%, aluminum-magnesium alloy: 3%, ferroboron: 0.5%, nickel powder: 5%, the balance is iron powder, powder filling rate 16%, wire diameter Ф1.6mm.

[0032] The present invention is a 460MPa seamless flux-cored wire suitable for all-position welding: the sheath is made of SPHC steel strip, and its properties are shown in Table 1. The chemical composition and mechanical properties of welding wire deposited metal are shown in Table 2 and Table 3. The diffusible hydrogen content of deposited metal is shown in Table 4.

[0033] Table 1 Performance requirements for SPHC steel strip

[0034]

[0035] Table 2 Chemical composition of welding wire deposited metal

[0036]

[0037] Table 3 Mechanical properties of welding wire deposited metal

[0038]

[0039] Table 4 Diffusio...

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
microhardnessaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a 460 MPa-grade seamless flux-cored wire suitable for full-position welding and a manufacturing method. The flux-cored wire comprises a SPHC steel-tape sheath and filling powder, wherein the filling powder comprises, by weight percentage, 32-42% of rutile, 2-3% of quartz, 1.5-2.5% of sodium fluoride, 2-3% of zircon sand, 3-5% of feldspar, 14-16% of manganese silicon alloy, 3-5% of electrolytic manganese, 3-5% of low-carbon ferromanganese, 2-3% of aluminium magnesium alloy, 0.3-0.5% of ferroboron, 4-6% of nickel powder and the balance iron powder; and the filling rate of the powder is 14-16%. The manufacturing method comprises the steps of carrying out on-line filling and welding, reducing the diameter of the wire to phi 1.2mm-phi 1.6mm by using rollers and a wire drawing die, and carrying out annealing on the wire under the condition that the temperature is 700 DEG C and the time of heat preservation is 3 hours in the diameter reducing process. The 460 MPa-grade seamless flux-cored wire suitable for full-position welding is stable in welding arc under the protection effect of carbon dioxide gas, has good full-position welding manufacturability, and can be used for downhand welding, vertical-up welding, horizontal-position welding and overhead welding; and the formed welding seam is attractive in appearance.

Description

technical field [0001] The invention relates to the technical field of welding materials, in particular to a 460MPa grade seamless flux-cored welding wire suitable for all-position welding and a manufacturing method thereof. Background technique [0002] With the development of economy and society, the strength level of steel plates used in marine engineering equipment, shipbuilding and bridges is gradually increasing, especially marine engineering equipment and ships have been immersed in the sea for many years, so the strength, corrosion resistance, Impact toughness and crack resistance requirements are getting higher and higher. [0003] 460MPa grade steel plate has good mechanical properties and welding performance, and is widely used in offshore platform equipment, ship construction and bridges, but the matching welding consumables have relatively high technical requirements, especially the stability and crack resistance of low temperature impact toughness are difficult...

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): B23K35/30B23K35/36B23K35/40
CPCB23K35/3053B23K35/3608B23K35/406
Inventor 李猛张文军郭纯
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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