Low-fluorine flux cored welding rod

A technology of flux-cored electrode and composition, applied in welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problem of high cost, and achieve the effect of low spatter rate, good weld formation and small spatter

Inactive Publication Date: 2015-04-22
SUZHOU LU LU SHUN ELECTRICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Application number: 97219676.5, the name of the invention is flux-cored electrode, which solves the problem that the electrode needs to be dried before use and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A low-fluorine flux-cored electrode, comprising a metal shell and a filler composition, the parts by weight of each component contained in the filler composition are:

[0028] Metal oxide slag former: 30 parts,

[0029] Fluorochemicals: 15 parts,

[0030] Metal alloy agent: 35 parts,

[0031] The parts by weight of the metal oxide slag forming agent is greater than the parts by weight of the fluorine-containing compound, the fluorine provided by the fluorine-containing compound is at least 1.5% by weight of the filler composition; the metal shell contains at least 70% weight of iron.

[0032] The metal oxide slag former is rutile.

[0033] The fluorine-containing compound is CaF 2 、Na 3 A1F 6 mixture.

[0034] The filler composition accounts for 30% of the total weight of the flux cored electrode.

[0035] The metal alloying agent includes FeB and FeMn, wherein FeB is 1 part (by weight), and FeMn is 6 parts (by weight).

Embodiment 2

[0037] A low-fluorine flux-cored electrode, comprising a metal shell and a filler composition, the parts by weight of each component contained in the filler composition are:

[0038] Metal oxide slag former: 40 parts,

[0039] Fluorochemicals: 30 parts,

[0040] Metal alloy agent: 45 parts,

[0041] The parts by weight of the metal oxide slag forming agent is greater than the parts by weight of the fluorine-containing compound, the fluorine provided by the fluorine-containing compound is at least 1.5% by weight of the filler composition; the metal shell contains at least 70% weight of iron.

[0042] The metal oxide slag former is rutile.

[0043] The fluorine-containing compound is K 3 AlF 6 , MnF 3 mixture.

[0044] The filler composition accounts for 35% of the total weight of the flux cored electrode.

[0045] The metal alloy agent includes FeSi and FeTi, wherein FeSi is 5 parts (by weight), and FeTi is 3 parts (by weight).

[0046] The following table records the ...

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PUM

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Abstract

The invention discloses a low-fluorine flux cored welding rod which comprises a metal casing and a filler composition. The filler composition contains, by weight, metallic oxide slag forming agent 15-70 parts, fluorinated compound 2-30 parts and metal alloy agent 5-65 parts, wherein the parts by weight of the metallic oxide slag forming agent is large than that of the fluorinated compound, the fluorine contained by the fluorinated compound is at least 15% of the weight of the filler composition, and the metal casing contains at least 70% by weight of iron. The low-fluorine flux cored welding rod is good in weld joint forming effect, little in smoke dust, small in splashing, small in welding pores and low in splashing rate.

Description

technical field [0001] The application relates to the field of welding, in particular to a low-fluorine flux-cored electrode with improved weld seam formation performance and reduced weld seam porosity. Background technique [0002] In the field of arc welding, the main types of welding processes are gas shielded arc welding with solid electrodes or gas shielded flux cored arc welding and submerged arc welding. Of these processes, gas shielded arc welding using solid or metal cored electrodes is becoming increasingly popular due to its increased productivity and versatility as a welding process. This increase in productivity and versatility comes from the continuity of electrodes in gas-shielded arc welding, with considerably higher productivity. Also, very little weld dross is formed with these electrodes, which saves time and money spent on cleaning the weld and removing the dross. However, in gas shielded arc welding using solid core or flux cored electrodes, the spatte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/368
CPCB23K35/3608B23K35/0266B23K35/368
Inventor 戴从锋
Owner SUZHOU LU LU SHUN ELECTRICAL EQUIP
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