Tubular wire rod for double-electrode gas protective welding, its welding method and appts.

A technology of gas shielding and welding methods, applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problems of not being able to use only one electrode, complex, large, etc., and achieve the effect of good welding operability and good low temperature toughness

Active Publication Date: 2004-05-26
KOBE STEEL LTD
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, for this two-electrode gas shielded welding device, there will be a large and complex problem
In ad

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
  • Tubular wire rod for double-electrode gas protective welding, its welding method and appts.
  • Tubular wire rod for double-electrode gas protective welding, its welding method and appts.
  • Tubular wire rod for double-electrode gas protective welding, its welding method and appts.

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0064] (Example 1)

[0065] Hereinafter, the examples of the present invention are compared and described with comparative examples outside the scope of the present invention. Table 4 below shows the type, polarity, and vibration conditions of the welding wire used in the Examples and Comparative Examples. In addition, the following Table 5 shows the welding workability of each Example and Comparative Example. Among them, FCW in Table 4 is Flux Cored Wire, ○ in Table 5 represents the same performance as Examples 1-8, ◎ represents better than Examples 1-8, and △ represents better than Examples 1-8 Slightly worse, × means poor. In addition, for the test conditions, the shape of the welded plate 1 is 80mm thick, 500mm wide, 3000mm long, the groove angle is 20°, the groove shape is V-shaped, and the groove gap on the welding start side is 4mm. The side is 8mm. That is, taking into account the variation of the actual weld gap, a tapered weld with a groove gap of 4 mm at the lower end o...

Example Embodiment

[0076] (Example 2)

[0077] Next, Example 2 of the present invention will be described. In Example 2, first, a tubular welding wire having the composition shown in Table 7 below was produced. Furthermore, in the wire composition shown in Table 4, the remaining parts are Fe, Si, C, and the like. In addition, Comparative Example No. 3-21 uses the conventional tubular welding wire.

[0078] 【Table 7】

[0079] Next, using the various welding wires of the Examples and Comparative Examples, the two-electrode gas shielded welding method was used to weld the welded plates with a thickness of 80mm, a width of 500mm, and a length of 1500mm for vertical welding and single pass welding, and the welding workability and welding metal were evaluated The impact performance. The welding conditions at this time are that the groove shape is V-shaped, the groove weld is 8mm, and the input heat is all about 600KJ / cm. In addition, the impact test was performed in accordance with the impact test method ...

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

A flux charged wire for two-electrode electro-gas arc welding, a two-electrode electro-gas arc welding method, and a two-electrode electro-gas arc welding device are provided to obtain excellent welding work efficiency and excellent low-temperature toughness. In a two-electrode electro-gas arc welding method, a sliding copper plate(2) sliding upward is put on the surface side of a plate(1) to be welded and a fixed-type backing material is put on the rear side. Two welding wires(4,5) are arranged in a bevel in an isolated state to the surface side and the rear side. The bevel is welded through upright butt welding. The welding wires are flux charged wires. The welding wire of the surface side is vibrated in the plate thickness direction and welding is executed with the polarity of the welding wires reversed. A two-electrode electro-gas arc welding device has a welding trolley supplying the surface-side welding wire in the bevel and moving along the bevel, and a supply member supplying the rear-side welding wire to the position of the backing member side.

Description

technical field [0001] The invention relates to a tubular welding wire for double-electrode gas shielded welding capable of welding one vertical welding bead of thick steel plate, a double-electrode gas shielded welding method and a double-electrode gas shielded welding device. Background technique [0002] As a high-efficiency vertical welding method, gas shielded welding can be used in various fields such as ships, oil storage and irrigation, and bridges, and it has made great contributions to the rationality of welding and the stabilization of joint quality. Especially in the marine field, it is suitable for welding extremely thick plates with a plate thickness of 50 mm or more, such as gunwale strakes and hatch coamings of container ships. [0003] However, in the welding method for this extremely thick plate, in addition to the very low welding speed, the previous single-electrode single-pass welding method is also prone to defects such as poor fusion. In order to elim...

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): B23K9/173B23K35/02B23K35/30B23K35/362
CPCB23K9/121B23K9/16B23K35/368
Inventor 日高武史桥本哲哉长谷薰笹仓秀司中尾哲也
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