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Submerged arc flux

一种埋弧焊、焊药的技术，应用在电弧焊设备、焊接设备、焊接介质等方向，能够解决高成本等问题，达到降低焊接成本、好熔渣去除性能的效果

Active Publication Date: 2006-12-13
LINCOLN GLOBAL INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All these requirements for submerged arc welding flux used in deep narrow grooves already result in very high costs, although this expensive flux is not necessary in subsequent welding passes

Method used

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Examples

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Embodiment Construction

[0024] In submerged arc welding, the arc from the electrode is buried within a particle of flux such as figure 1 As shown, the electrode moves through the particulate flux in a plowing motion. The present invention provides a new type of flux F, which can be used in standard submerged arc welding process, especially process A for welding in deep and narrow grooves. In process A, an electrode E having any chemical composition required for the welding process forms an arc between the advancing electrode E and the workpiece WP. The electrode extends downwards into granulated flux F supplied by a standard flux feeder 10 . A starting flux pile 20 of particle flux F is brought along with electrode E and feeder 10 in zone 22 figure 1 The middle arrow indicates the directional movement of the dam 30 leveling out. The horizontal flux area 22 is the operating area of ​​particle flux, through which the electrode E passes when melted by the arc a to deposit molten metal puddle 50 in th...

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Abstract

A highly basic particle flux for submerged arc welding that produces less than 7 ml / 100 g of diffusible hydrogen in the weld metal, which flux comprises a carbon dioxide containing compound with an effective amount of heat releasable carbon dioxide in the range of 0.5-3.5% by weight of the flux over 10% by weight of a low melting point compound and a binder.

Description

technical field [0001] The invention relates to the field of electric arc welding, and more particularly relates to particle flux used in the submerged arc welding of the interface of heavily processed workpieces. Background technique [0002] Highly basic submerged arc welding granular fluxes are usually classified as H8 or H16 (according to AWS A4.3-93) when using the various AWS grades of electrodes. Therefore, existing submerged arc welding granular fluxes cause a relatively high content of diffusible hydrogen in the weld metal. It is a proven fact in the technical literature that a high diffusible hydrogen content makes the weld metal more prone to hydrogen assisted cold cracking (HACC). Due to the current trend towards higher strength steels, it is now more critical to achieve low diffusible hydrogen levels in the weld metal. At the same time, it is a known fact that low nitrogen levels in the weld metal enhance the mechanical properties of the weld, especially the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/36B23K9/18
CPCB23K35/362B23K35/36B23K35/3601B23K35/3605B23K35/3607
Inventor 阿希什·卡普尔特雷沙·A.·麦尔菲
Owner LINCOLN GLOBAL INC
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