Submerged arc welding flux for steam temperature ultra-supercritical thermal power unit steel and preparation method thereof

An ultra-supercritical, thermal power unit technology, used in welding equipment, manufacturing tools, welding media, etc.

Active Publication Date: 2018-10-30
ATLANTIC CHINA WELDING CONSUMABLES +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no submerged arc welding material matching this steel

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
  • Submerged arc welding flux for steam temperature ultra-supercritical thermal power unit steel and preparation method thereof
  • Submerged arc welding flux for steam temperature ultra-supercritical thermal power unit steel and preparation method thereof
  • Submerged arc welding flux for steam temperature ultra-supercritical thermal power unit steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] SiO 2 8kg, MgO 34kg, Al 2 o 3 15kg, CaF 2 36kg, CaO 3kg, ZrO 2 3kg, Re 2 o 3 Put 1kg of powder in a mixer, stir and mix evenly, add 18.0kg of sodium water glass to mix and granulate, then bake at 150°C, sinter at 700°C, and sieve to obtain the flux product.

[0031] The flux is matched with welding wire (the components of the welding wire are: C 0.106, Mn 0.80, Si 0.20, S0.005, P 0.005, Cr 8.91, Co 2.85, W 2.95, V 0.22, Nb 0.071, N 0.010, B 0.008, Cu 0.90, Ce 0.08, Nd 0.061, Ni 0.030, the balance is Fe and impurities) for submerged arc welding experiments on 20mm thick G115 steel plates. Excellent welding process performance, good slag removal, stable arc, beautiful weld surface, regular weld edges, no undercut, pores, cracks and other defects.

[0032]The flux and welding wire prepared in Example 1 were subjected to a submerged arc welding test, and the chemical composition of the deposited metal was: C: 0.086wt%, Mn: 0.61wt%, Si: 0.26wt%, S: 0.004wt%, P: 0....

Embodiment 2

[0042] SiO 2 6kg, MgO 36kg, Al 2 o 3 16kg, CaF 2 39kg, CaO 2kg, ZrO 2 1.5kg, Re 2 o 3 Put 0.5kg of powder in a mixer, stir and mix evenly, add 18.5kg of sodium water glass to mix and granulate, then bake at 150°C, sinter at 700°C, and sieve to obtain the flux product.

[0043] The flux is matched with welding wire (the components of the welding wire are: C 0.106, Mn 0.80, Si 0.20, S0.005, P 0.005, Cr 8.91, Co 2.85, W 2.95, V 0.22, Nb 0.071, N 0.010, B 0.008, Cu 0.90, Ce 0.08, Nd 0.061, Ni 0.030, the balance is Fe and impurities) for submerged arc welding experiments on 20mm thick G115 steel plates. Excellent welding process performance, good slag removal, stable arc, beautiful weld surface, regular weld edges, no undercut, pores, cracks and other defects.

[0044] The flux and welding wire prepared in Example 2 were subjected to a submerged arc welding test, and the chemical composition of the deposited metal was: C: 0.088wt%, Mn: 0.62wt%, Si: 0.24wt%, S: 0.004wt%, ...

Embodiment 3

[0053] SiO 2 5kg, MgO 37kg, Al 2 o 3 17kg, CaF 2 37kg, CaO 2kg, ZrO 2 1kg, Re 2 o 3 Put 1kg of powder in a mixer, stir and mix evenly, add 19.0kg of sodium water glass to mix and granulate, then bake at 150°C, sinter at 700°C, and sieve to obtain the flux product.

[0054] The flux is matched with welding wire (the components of the welding wire are: C 0.106, Mn 0.80, Si 0.20, S0.005, P 0.005, Cr 8.91, Co 2.85, W 2.95, V 0.22, Nb 0.071, N 0.010, B 0.008, Cu 0.90, Ce 0.08, Nd 0.061, Ni 0.030, the balance is Fe and impurities) for submerged arc welding experiments on 20mm thick G115 steel plates. Excellent welding process performance, good slag removal, stable arc, beautiful weld surface, regular weld edges, no undercut, pores, cracks and other defects.

[0055] The flux and welding wire prepared in Example 3 were subjected to a submerged arc welding test, and the chemical composition of the deposited metal was: C: 0.091wt%, Mn: 0.63wt%, Si: 0.25wt%, S: 0.005wt%, P: 0...

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
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a steel submerged-arc welding flux for a steam temperature ultra-supercritical thermal power unit and a preparation method of the welding flux. The welding flux comprises, by weight, 5-8 parts of SiO2, 34-37 parts of MgO, 15-17 parts of Al2O3, 36-39 parts of CaF2, 2-4 parts of CaO, 1.0-3.0 parts of ZrO2 and 0.5-2.0 parts of Re2O3 (rare earth oxide). Compared with the prior art, the welding flux has the advantages that G115 steel is welded with the welding flux, and weld metal has strength, flexibility and high-temperature performance similar to those of the G115 steel.

Description

technical field [0001] The invention relates to the field of welding materials, in particular to a submerged arc welding flux for steam temperature ultra-supercritical thermal power unit steel and a preparation method thereof. Background technique [0002] At present, the steam parameters of the main ultra-supercritical thermal power units in the world are 600 °C. Since the first 600 °C ultra-supercritical thermal power unit in China was put into operation in Yuhuan County, Zhejiang Province in 1996, nearly a hundred 600 °C ultra-supercritical thermal power units have been built. Thermal Power. In order to further reduce coal consumption, improve thermal efficiency and reduce emissions, my country launched a national plan for the development of ultra-supercritical thermal power units with 700 °C steam parameters in 2010. [0003] Heat-resistant materials are the main "bottleneck" problem that restricts the development of thermal power units to high parameters, while large-d...

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): B23K35/36B23K35/40
CPCB23K35/3601B23K35/40
Inventor 杨飞蒋勇李亚军佘应堂王冬平罗永飞王林森张玮钟正彬
Owner ATLANTIC CHINA WELDING CONSUMABLES
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
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap