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

Austenitic stainless steel submerged-arc welding wire with excellent high-temperature strength

A technology of austenitic stainless steel and high-temperature strength, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., and can solve problems such as insufficient mechanical properties of welds

Inactive Publication Date: 2013-09-25
DANYANG HUALONG SUPERIOR STEEL
View PDF5 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The welding wire can solve the problem of insufficient mechanical properties of the weld seam in the long-term operation of the material in the pressurized water reactor environment

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
  • Austenitic stainless steel submerged-arc welding wire with excellent high-temperature strength
  • Austenitic stainless steel submerged-arc welding wire with excellent high-temperature strength

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The present invention will be further described below through embodiment.

[0039] The chemical composition of the welding wire of the present invention and the tensile strength of the welded joint are respectively listed in Table 1 and Table 2. In order to compare the excellence of the welding wire of the present invention, a comparative test is also performed on the conventionally used ER308L welding wire and listed in the table. The ferrite δ content in Table 2 is calculated using the following formula: Cont(δ)=3*(Cr+Mo)+4.5*Si-2.8*Ni-1.4*Mn-84*(C+N)-19.8. It can be seen from Table 2 that, compared with common comparative example 1, the austenitic stainless steel welding consumable welding joint of the present invention has excellent high-temperature strength, and can be used for welding or repairing equipment in a nuclear island reactor at a temperature of 350°C .

[0040] The four kinds of welding wires used in the test were prepared by the same production proce...

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 provides an austenitic stainless steel submerged-arc welding wire with excellent high-temperature strength and belongs to the technical field of welding wires. The stainless steel welding wire provided by the invention comprises the following chemical components by mass percent: 0 to 0.025% of C, 0 to 1.00% of Si, 0 to 2.50% of Mn, 0 to 0.020% of P, 0 to 0.020% of S, 9.00% to 12.00% of Ni, 18.00% to 20.00% of Cr, 0 to 0.50% of Mo, 0.06% to 0.12% of N, 0.05% to 0.30% of Nb, 0 to 0.018% of Co, 0-0.30% of one or more of the rare-earth elements Ce, Dy, Y and Nd, and Fe in balancing amount; the high temperature ferrite Delta in the austenitic stainless steel under cast condition is 1% to 3%. The welding wire can solve the problem that the mechanical property of a long-time running weld joint is insufficient in the environment of material pressurized water reactor. The welding wire provided by the invention is mainly applied to weld critical components in a pressurized water reactor nuclear island.

Description

[0001] technical field [0002] The invention provides an austenitic stainless steel submerged arc welding wire with excellent high-temperature strength, which belongs to the technical field of welding wires. The welding wire can solve the problem of insufficient mechanical properties of the long-term operation weld seam in the pressurized water reactor environment of the material. The welding wire of the invention can be mainly used for welding key parts in the nuclear island of the pressurized water reactor. [0003] Background technique [0004] Austenitic stainless steel is widely used in petroleum, chemical, aerospace and energy fields due to its good ductility, cold and hot workability and localized corrosion resistance at high and very low temperatures. Among them, the construction of nuclear power plants requires the use of a large amount of austenitic stainless steel. At present, most of the nuclear power plants under construction in China are pressurized water r...

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): B23K35/30
Inventor 淮凯文
Owner DANYANG HUALONG SUPERIOR STEEL
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