Pure argon gas shielded welding mig flux-cored wire and mig arc welding method

A technology of flux-cored welding wire and welding wire, used in arc welding equipment, welding/welding/cutting items, welding medium, etc., can solve problems such as solidification cracks, achieve high static tensile strength and fatigue strength, and suppress slag and smoke. , low cost effect

Active Publication Date: 2009-10-21
KOBE STEEL LTD
View PDF3 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in high C steel, there is a disadvantage that oxides are easily caused by solidification cracks as inclusions

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
  • Pure argon gas shielded welding mig flux-cored wire and mig arc welding method
  • Pure argon gas shielded welding mig flux-cored wire and mig arc welding method
  • Pure argon gas shielded welding mig flux-cored wire and mig arc welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. figure 1 It is a perspective view showing a MIG welding method using pure Ar gas according to the embodiment as a shielding gas. The welding wire 13 is continuously supplied to the welding torch 1 , and the welding wire 13 is fed out from the tip of the welding torch 1 toward the base material 21 through the center portion of the welding torch 1 . With the welding wire 13 as the positive electrode and the base material 21 as the negative electrode, a welding voltage is applied from a power supply (not shown), and an arc 31 is formed between the welding wire 13 and the base material 21 . The arc 31 melts the welding wire 13 and the base material 21 to form a molten pool 175 . At this time, if figure 2 As shown in (b), Ar gas as a shielding gas is supplied to the vicinity of the molten pool 175 formed between the welding wire 13 and the base material 21, and...

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
particle diameteraaaaaaaaaa
strengthaaaaaaaaaa
strengthaaaaaaaaaa
Login to view more

Abstract

A pure Ar-MIG welding wire for welding steel according to the present invention is formed of a flux-cored wire. The flux-cored wire is formed in the manner that a formation formed by welding a carbon steel hoop into a pipe shape or a seamless pipe is used as an outer sheath, the outer sheath is filled with a flux, and a wire drawing process is performed. The flux accounts for 7 to 27 mass% of the total wire mass. The wire contains graphite in the amount of 0.16 to 2.00 mass% on the basis of the total wire mass and iron powder in the amount of 20 mass% on the basis of the total flux mass. According to the construction, neither expensive metal resource nor a greenhouse effect gas is used, slag and fume generation is inhibited, and a weld joint having a high static tensile strength and fatigue strength can be obtained.

Description

technical field [0001] The present invention relates to a MIG flux-cored wire for pure Ar gas shielded welding used for MIG arc welding of steel materials using pure Ar gas as a shielding gas, and a MIG flux cored wire for gas shielded arc welding while discharging the wire from a welding torch. arc welding method. Background technique [0002] Unlike the case where the base material is an aluminum alloy material, in gas shielded arc welding of steel materials, an inert gas shielded arc welding method using pure Ar is considered to be substantially impossible. The reason for this is considered to be that when a steel material is used as an electrode, an oxide having low energy is required for electron emission. However, pure Ar gas will not form oxides on the surface of the steel plate or the front end of the welding wire. Therefore, CO is generally used alone 2 or mix CO in Ar 2 or O 2 gas as shielding gas. However, if CO 2 and O 2 In the presence of such an oxidizi...

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): B23K35/22B23K35/30B23K35/38B23K9/173B23K9/09B23K103/04
CPCB23K35/0244B23K35/0266B23K35/362B23K35/368B23K35/3053B23K35/383B23K9/173
Inventor 铃木励一梅原悠中野利彦
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