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

Metal powder flux-cored wire for high-strength steel

A technology of flux-cored welding wire and high-strength steel, applied in metal processing equipment, welding media, welding equipment, etc., can solve the problems of not allowing cellulose-type electrodes, high strength, and high sensitivity to cold cracks, and achieve high welding melting Deposition efficiency and deposition speed, improvement of thermal cracking resistance, reduction of welding fume and spatter

Inactive Publication Date: 2012-07-11
KUSN GINTUNE WELDING
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the welding of X80 steel on the second line of the West-East Gas Pipeline, due to the high strength of this steel type and its high sensitivity to cold cracks, it is not allowed to use cellulose-type electrodes for welding bead priming

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
  • Metal powder flux-cored wire for high-strength steel
  • Metal powder flux-cored wire for high-strength steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] A metal powder-type flux-cored wire for high-strength steel, which uses low-P, S low-carbon steel strips as the wire sheath, uses a flux-cored transition alloy, and is manufactured using a general-purpose flux-cored wire manufacturing process. The filling ratio is 10%-20%.

[0019] Select the cold-rolled steel strip, and use the total mass composition of the matching welding wire as shown in Table 1:

[0020] Table 1: Embodiment ①~⑥ drug core composition

[0021]

[0022] The diameter of the welding wire is 1.2mm. After the above-mentioned flux-cored welding wire is made, it is connected with DC reverse, the voltage is 28V, the current is 250A, the dry elongation is 18mm, and the moving speed is 250mm / min. The mechanical properties of the weld are shown in Table 2.

[0023] Table 2 Examples ① ~ ⑥ obtained weld mechanical properties

[0024]

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 metal powder flux-cored wire for high-strength steel, which comprises carbon steel sheath and a flux core with the filling ratio of 10-20%. The metal powder flux-cored wire is characterized in that in the overall weight percent of the wire, components in the flux core include 1.00-3.00% of Mn (manganese), 0.20-1.50% of Si (silicon), 0.005-0.050% of F (fluorine), 0-0.1% of Ti (titanium) and 0-0.004% of B (boron). The flux-cored wire is applicable to backing weld of the high-strength steel of an X80 pipeline, and when in welding, deposition efficiency is high, speed is high, arc is stable, splash is little, a welding bead is smooth and beautiful in appearance, and post-welding slag is little.

Description

technical field [0001] The invention belongs to the field of welding materials and relates to a shielding gas welding flux-cored welding wire, which is especially suitable for welding X80 pipeline steel. Background technique [0002] Pipeline transportation is mainly used for long-distance transportation of oil and natural gas. It has the remarkable characteristics of economy, safety, uninterrupted, and less damage to the environment. Therefore, countries all over the world are vigorously developing it. In order to adapt to the complex geological conditions and climate environment along the transportation, its development trend is high strength and high toughness. [0003] However, in the welding of X80 steel on the second line of the West-East Gas Pipeline, due to its high strength and high sensitivity to cold cracks, it is not allowed to use cellulose-type electrodes for welding bead priming. Contents of the invention [0004] In order to solve the above problems, the p...

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): B23K35/30
Inventor 蔡鸿祥庄石城
Owner KUSN GINTUNE WELDING
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