Stainless steel flux cored wire

A technology of flux-cored welding wire and stainless steel, applied in welding equipment, welding medium, welding equipment, etc., can solve the problems of insufficient strength characteristics, high cost, high alloy content, and achieve good slag peelability and good tensile strength. Effect

Inactive Publication Date: 2019-06-11
KOBE STEEL LTD
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the Ni-based alloy flux-cored wire disclosed in Patent Document 1 is expensive because the alloy content of Ni, Cr, Mo, etc. is high compared with stainless steel.
In addition, the stainless steel chemical-coated electrode disclosed in Patent Document 2 has insufficient strength characteristics at room temperature, and because it is a chemical-coated electrode, welding efficiency is low.

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
  • Stainless steel flux cored wire
  • Stainless steel flux cored wire
  • Stainless steel flux cored wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～14 and comparative example 1～10

[0125] Flux-cored welding wires having the chemical compositions shown in Table 2 were produced using sheaths having the chemical compositions shown in Table 1.

[0126] The wire diameters of the obtained flux-cored wires were all 1.2 mm, and the flux rate was 21 to 34% by mass.

[0127] In addition, the chemical compositions in Table 1 and Table 2 are expressed in mass % relative to the total mass of the welding wire. In addition, "Bi" means a Bi-converted value for a Bi compound, "F" means a fluorine-converted value for a fluoride, and "Na+K+Li" means an alkali metal compound composed of Na, K, and Li. The sum of the alkali metal conversion values. In addition, the so-called "formula A" is the value represented by [Ni+30×(C+N)+0.5×Mn+12.4] among the contents of each component contained in the welding wire, and the so-called "formula B" is the content of each component contained in the welding wire. Among the contents of each component, the value represented by [Cr+Mo+1.5×S...

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 a stainless steel flux cored wire, which is excellent in extension strength, low-temperature flexibility, anti-defection property and anti-hot-cracking property. The stainless steel flux cored wire inlcudes, by mass, lower than 0.04% of carbon, lower than 0.8% of silicon, 0.5-5.0% of manganese, lower than 3.0% of copper, 13-33% of nickel, 15-29% of chromium, 2.0-6.0% of molybdenum, lower than 1.0% of niobium, and 0.08-0.25% of nitrogen. In addition, the flux includes, by mass, 4.0-12.0% of TiO2, 0.05-3.0% of SiO2, 0.5-5.0% of ZrO2, lower than 2.0% of Al2O3, a bismuth compound with Bi equivalent value being lower than 0.01%, an alkali metal compound with alkali metal equivalent value being 0.1-2.0% and fluorides with fluorine equivalent value being 0.1-1.0%.

Description

technical field [0001] The present invention relates to a stainless steel flux-cored wire having a fully austenitic structure used for welding stainless steel for low-temperature applications, 5% Ni steel, and the like. Background technique [0002] Stainless steel welding consumables are used for welding stainless steel with excellent corrosion resistance and heat resistance, and are widely used in various industrial fields. On the other hand, for welding materials of 5% Ni steel used as structural members such as storage tanks such as LEG, Ni-based alloy welding materials are often used because high strength characteristics and impact performance at low temperatures are required. [0003] Existing stainless steel welding consumables are hardly used in the welding of 5% Ni steels because they cannot meet the specifications for strength and impact properties. [0004] For example, Patent Document 1 discloses a Ni-based alloy flux-cored wire for low-temperature steel welding...

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): B23K35/365B23K35/30B23K9/16B23K103/04
CPCB23K9/16B23K35/0266B23K35/3086B23K35/3608B23K35/365B23K2103/04B23K2103/05B23K35/3053B23K35/3607B23K35/361C22C38/44C22C38/58
Inventor 菅原大志福田和博池田哲直西山繁树
Owner KOBE STEEL 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
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