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Welding wire flux core and welding wire, method for preparing welding wire and welding method

A welding method and welding wire technology, applied in welding equipment, welding medium, welding equipment, etc., can solve the problems of small holes and cracks in the surfacing layer, easy structure damage, short life, etc., and achieve good welding process performance, The overall cost of welding wire is low and the effect of improving the service life

Active Publication Date: 2022-06-24
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

Method used

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  • Welding wire flux core and welding wire, method for preparing welding wire and welding method
  • Welding wire flux core and welding wire, method for preparing welding wire and welding method

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Embodiment approach

[0045] As an implementation 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] On the other hand, an embodiment of the present invention also provides the above-mentioned preparation method of a welding wire for surfacing welding of alloy steel, the method comprising:

[0048] The above-mentioned welding wire flux core for surfacing welding of alloy steel is wrapped in a stainless steel strip, and then the welding wire for surfacing welding of alloy steel is obtained through fine drawing, diameter reduction, surface treatment and close-packed layer winding.

[0049] This welding wire preparation method adopts a precision forming process, and is prepared with an ultra-low carbon stainless steel strip as the outer skin.

[0050] In a fourth aspect, an emb...

Embodiment 1

[0056] Embodiment 1 provides a 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. ferrosilicon, 0.8% magnesium powder, 35% metallic chromium, 20% nickel powder, 2% Na 2 O, 4% K 2 O, 1.0% sodium fluoride, 24% natural rutile, 6% SiO 2 The remainder is iron powder.

[0058] The preparation method of welding wire is:

[0059] 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 inevitable impurities,

[0060] The flux core is wrapped in an ultra-low carbon stainless steel strip by a precision forming process, and then the ...

Embodiment 2

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

[0064] The welding wire includes steel sheath and flux core, the diameter of the welding wire is 1.2mm, the thickness of the steel sheath is 0.4mm, the flux core accounts for 27.0% of the weight of the welding wire, and the flux core is composed of 5% electrolytic manganese and 0.8% silicon by mass percentage. 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 remainder of the iron powder.

[0065] The preparation method of welding wire is:

[0066] 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% by mass of chromium, 8% of nickel, the balance of Fe and inevitable impurities.

[0067] The prod...

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Abstract

The invention provides a welding wire flux core, a welding wire, a preparation method and a welding method of the welding wire, and relates to the technical field of welding materials. The flux core is composed of the following chemical components in mass fractions: Mn: 1-6%; Si: 0.1-6% 5%; Mg: 0.1‑2%, Cr: 35‑50%; Ni: 15‑25%; Na 2 O and K 2 The sum of the mass fractions of O is 1‑10%; fluoride: 0.1‑2%; TiO 2 : 15‑30%; SiO 2 : 3‑10%; the balance is Fe and unavoidable impurities. After the welding wire provided by the present invention is used for surfacing, the tensile strength of the surfacing layer is 527-547 MPa, and the elongation is 38%. As the backing welding material of alloy steel flux-cored welding wire for surface surfacing, it can ensure heat preservation at 690 ° C. After 32 hours of heat treatment, the side bend (d=4t, α=180°) has no open cracks, and the surfacing layer metal has no intergranular corrosion tendency; and the welding process performance is good, the arc is stable, the spatter is small, the weld shape is beautiful, and the short-circuit transition is adopted Vertical downward welding can be realized; and the production process of the welding wire is simple, the design of the alloy system is reasonable, and the overall cost of the welding wire is low.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and particularly relates to a welding wire flux core and welding wire, a preparation method of the welding wire and a welding method. Background technique [0002] In recent years, with the rapid economic development, the stainless steel industry has also developed rapidly. The strong growth of stainless steel consumption will definitely drive the rapid growth of the welding market: on the one hand, the improvement in the quality of steel promotes the upgrading of stainless steel welding materials; The pace of structural adjustment has been accelerated. [0003] Compared with traditional manual welding rod, copper-plated solid core welding wire and submerged arc flux, the use of stainless steel flux-cored welding wire has obvious advantages. First, the welding process is more continuous, and automatic welding can be realized, thereby reducing the number of welding joints. It greatly i...

Claims

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Application Information

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Patent Type & Authority Patents(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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