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Welding wire flux core, welding wire, preparation method of welding wire and welding method

A welding wire and flux core technology, which is applied in the preparation of welding wire, welding wire flux core and welding wire, can solve the problems of short life, easy damage to the structure, and easy occurrence of small holes and cracks in the surfacing layer, so as to improve the service life and weld The effect of good process performance and low overall cost of welding wire

Active Publication Date: 2021-02-23
ATLANTIC CHINA WELDING CONSUMABLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a welding wire flux core, welding wire, welding wire preparation method and welding method to solve the problem that small holes and cracks are easy to appear on the surfacing layer in the prior art, resulting in easy damage to the structure of the processed workpiece and short life. technical problem

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  • Welding wire flux core, welding wire, preparation method of welding wire and welding method
  • Welding wire flux core, welding wire, preparation method of welding wire and welding method

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Embodiment approach

[0045] As an implementation manner of the embodiment of the present invention, the filling rate of the drug core is 22-30%.

[0046] As an implementation manner of the embodiment of the present invention, the thickness of the outer skin is 0.3-0.5 mm, and the diameter of the welding wire is 1.2-1.6 mm.

[0047] In yet another aspect, the embodiment of the present invention also provides a method for preparing the above-mentioned welding wire for alloy steel surfacing, the method comprising:

[0048] Wrap the flux core of the welding wire for alloy steel surfacing welding in a stainless steel strip, and then go through fine drawing and diameter reduction, surface treatment and close-packed layer winding to obtain the welding wire for alloy steel surfacing welding.

[0049] This welding wire preparation method adopts precision forming technology, and the ultra-low carbon stainless steel strip is used as the outer skin.

[0050] In the fourth aspect, the embodiment of the presen...

Embodiment 1

[0056] Embodiment 1 provides a kind of welding wire flux core, welding wire, preparation method and welding method of welding wire, wherein,

[0057] The welding wire includes a steel sheath and a flux core. The diameter of the welding wire is 1.2mm, the thickness of the steel sheath is 0.4mm, and the flux core accounts for 26.0% of the weight of the welding wire. The composition of the flux core is calculated by mass percentage, 4% electrolytic manganese, 0.5% Ferrosilicon, 0.8% magnesium powder, 35% metal chromium, 20% nickel powder, 2% Na 2 O, 4% K 2 O, 1.0% sodium fluoride, 24% natural rutile, 6% SiO 2 The balance is iron powder.

[0058] The preparation method of welding wire is:

[0059] A 10mm×0.4mm ultra-low carbon stainless steel strip is selected as the outer skin, and its chemical composition is 0.01% carbon, 1.3% manganese, 0.3% silicon, 0.002% sulfur, 0.007% phosphorus, 18% Chromium, 8% nickel, the balance is Fe and unavoidable impurities,

[0060] The flux c...

Embodiment 2

[0063] Embodiment 2 provides a kind of welding wire flux core, welding wire, preparation method and welding method of welding wire, wherein,

[0064] The welding wire includes a steel sheath and a flux core. The diameter of the welding wire is 1.2mm, the thickness of the steel sheath is 0.4mm, and the flux core accounts for 27.0% of the weight of the welding wire. The composition of the flux core is 5% electrolytic manganese and 0.8% silicon Iron, 1.0% magnesium powder, 42% metallic chromium, 18% nickel powder, 4% Na 2 O, 3% K 2 O, 1.0% sodium fluorosilicate, 24% natural rutile, 8% SiO 2 , the balance of iron powder.

[0065] The preparation method of welding wire is:

[0066] A 10mm×0.4mm ultra-low carbon stainless steel strip is selected as the outer skin, and its chemical composition is: 0.01% carbon, 1.3% manganese, 0.3% silicon, 0.002% sulfur, 0.007% phosphorus, 18% Chromium, 8% nickel, the balance is Fe and unavoidable impurities.

[0067] The production process of ...

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Abstract

The invention provides a welding wire flux core, a welding wire, a preparation method of the welding wire and a welding method, and relates to the technical field of welding materials. The flux core is formed by following chemical components including, by mass percent, 1-6% of Mn, 0.1-5% of Si, 0.1-2% of Mg, 35-50% of Cr, 15-25% of Ni; 1-10% of Na2O and K2O, 0.1-2% of fluoride, 15-30% of TiO2, 3-10% of SiO2 and the balance Fe and inevitable impurities. After the welding wire is adopted for surfacing, the tensile strength of a surfacing layer of the welding wire is 527-547 MPa, the elongation is 38%, the welding wire is used as a backing welding material of an alloy steel flux-cored wire for surface surfacing, it is guaranteed that no open cracks exist in side bending (d=4t, and alpha=180 degrees) after heat preservation of 690 DEG C and heat treatment of 32 hours, and surfacing layer metal has no intergranular corrosion tendency; the welding process performance is good, electric arcs are stable, splashing is small, weld joint forming is attractive, and vertical downward welding can be achieved through short-circuit transition; and the welding wire is simple in production process, reasonable in alloy system design and low in comprehensive cost.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a welding wire flux core, a welding wire, a preparation method and a welding method of the welding wire. Background technique [0002] In recent years, with the rapid development of the economy, the stainless steel industry has also developed rapidly. The strong growth of stainless steel consumption will surely drive the rapid growth of the welding market: on the one hand, the improvement of steel quality promotes the replacement of stainless steel welding materials; The pace of structural adjustment was accelerated. [0003] Compared with traditional manual electrodes, copper-plated solid wires, and submerged arc fluxes, welding with stainless steel flux-cored wires has obvious advantages. First, the welding process is more continuous, and automatic welding can be realized, thereby reducing welding joints. The production efficiency is greatly improved, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40B23K9/16B23K9/04
CPCB23K35/3086B23K35/40B23K9/16B23K9/04
Inventor 袁均山赵佳蒋勇曾志超刘奇望
Owner ATLANTIC CHINA WELDING CONSUMABLES
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