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Anti-cracking stainless steel welding wire and preparation method thereof

A stainless steel, anti-cracking technology, applied in welding equipment, welding media, manufacturing tools, etc., can solve the problems of high surface tension of stainless steel droplets, unsatisfactory welding process performance, and reduced mechanical properties of welds, so as to suppress hydrogen escape , Remarkable anti-cracking effect, prolonging the heat preservation time

Inactive Publication Date: 2018-08-31
DANYANG HUALONG SUPERIOR STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the resistance value of the welding core of the stainless steel welding wire is larger than that of carbon steel, the thermal conductivity is worse than that of carbon steel, and the surface tension of the stainless steel droplet is large, so the droplet is mainly short-circuited by large particles during the welding process. Prolonging the welding time and increasing the temperature will result in unsatisfactory welding process performance and reduced mechanical properties of the weld
At present, domestic stainless steel welding wire has problems such as unstable welding wire arc, large internal stress after welding, easy cracking and arc crater formation, poor process stability and other problems for many years, which seriously affect the quality of weldments

Method used

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  • Anti-cracking stainless steel welding wire and preparation method thereof

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Embodiment 1

[0030] An anti-cracking stainless steel welding wire, which is composed of 304 stainless steel strip and a flux core, and the flux core is composed of the following components in terms of mass percentage: SiO 2 8%, 5 parts of rare earth fluoride, 3% of attapulgite clay, 5% of calcium oxalate, 10% of alloy powder composed of magnesium 30%, aluminum 20%, titanium 40%, boron 10%, metal chromium 5%, manganese content 55% ferromanganese 8%, molybdenum powder 2%, potassium carbonate 4%, alkali metal oxide 8% composed of lithium oxide, sodium oxide and potassium oxide in a mass ratio of 1:1:3, rutile 6%, and The amount is iron, and the sum of the mass percentages of the above components is 100%.

[0031] A preparation method of anti-cracking stainless steel welding wire, specifically comprising the steps of:

[0032] (1) Weigh SiO according to mass percentage 2 8%, 5 parts of rare earth fluoride, 3% of attapulgite clay, 5% of calcium oxalate, 10% of alloy powder, 5% of metal chro...

Embodiment 2

[0038] An anti-cracking stainless steel welding wire, which is composed of 304 stainless steel strip and a flux core, and the flux core is composed of the following components in terms of mass percentage: SiO 2 5%, 3 parts of rare earth fluoride, 1% of attapulgite clay, 3% of calcium oxalate, 12% of alloy powder composed of magnesium 35%, aluminum 15%, titanium 45%, boron 5%, metal chromium 5%, manganese content 60% ferromanganese 5%, molybdenum powder 1%, potassium carbonate 3%, alkali metal oxide composed of lithium oxide, sodium oxide and potassium oxide in a mass ratio of 1:2:1 5%, rutile 2%, and The amount is iron, and the sum of the mass percentages of the above components is 100%.

[0039] A preparation method of anti-cracking stainless steel welding wire, specifically comprising the steps of:

[0040] (1) Weigh SiO according to mass percentage 2 5%, 3 parts of rare earth fluoride, 1% of attapulgite clay, 3% of calcium oxalate, 12% of alloy powder, 5% of metal chrom...

Embodiment 3

[0046] An anti-cracking stainless steel welding wire, which is composed of 304 stainless steel strip and a flux core, and the flux core is composed of the following components in terms of mass percentage: SiO 2 10%, 8 parts of rare earth fluoride, 5% of attapulgite clay, 8% of calcium oxalate, 15% of alloy powder composed of magnesium 32%, aluminum 18%, titanium 45%, boron 5%, metal chromium 8%, manganese content 65% ferromanganese 10%, molybdenum powder 3%, potassium carbonate 5%, alkali metal oxide composed of lithium oxide, sodium oxide and potassium oxide in a mass ratio of 1:2:3 12%, rutile 9%, and The amount is iron, and the sum of the mass percentages of the above components is 100%.

[0047] A preparation method of anti-cracking stainless steel welding wire, specifically comprising the steps of:

[0048] (1) Weigh SiO according to mass percentage 2 10%, 8 parts of rare earth fluoride, 5% of attapulgite clay, 8% of calcium oxalate, 15% of alloy powder, 8% of metal c...

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Abstract

The invention belongs to the field of welding materials, and relates to a stainless steel welding wire material, in particular to an anti-cracking stainless steel welding wire and a preparation methodof the anti-cracking stainless steel welding wire. The welding wire is composed of a sheath and a flux core. The flux core is prepared from, by mass, 5-10% of SiO2, 3-8 parts of rare earth fluoride,1-5% of attapulgite clay, 3-8% of calcium oxalate, 10-15% of alloy powder, 5-8% of chromium metal, 5-10% of ferromanganese iron, 1-3% of molybdenum powder, 3-5% of potassium carbonate, 5-12% of alkalimetal oxide, 2-9% of titanate and the balance iron, wherein the sum of the mass percents of the components is 100%. According to the anti-cracking stainless steel welding wire and the preparation method of the anti-cracking stainless steel welding wire, the welding wire has the excellent mechanical properties such as excellent welding technological performance, good toughness and high strength, and is remarkable in anti-cracking effect; electric arc is stable, splashing is small, deslagging is easy, forming is meticulous and attractive, and full-position welding can be achieved; and the preparation method is simple, low in cost, high in efficiency, environmentally friendly, free of pollution and capable of achieving large-scale production.

Description

technical field [0001] The invention belongs to the field of welding materials and relates to stainless steel welding wire materials, in particular to an anti-cracking stainless steel welding wire and a preparation method thereof. Background technique [0002] With the development of modern industrial technology, stainless steel has been widely used due to its excellent mechanical properties and corrosion resistance, but its welding problems have become more and more prominent. In the actual welding process, there is a large difference between the strength and toughness of the welded joint and the strength and toughness of the base metal, which increases the production cost of the product and easily leads to safety accidents. When carrying out overlay welding repair of large-scale special wear-resistant parts such as rolls, grinding discs, and grinding rollers, since the base metal itself is mostly medium-high carbon alloy steel, the weldability is poor, cracks are prone to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/368B23K35/40
CPCB23K35/3053B23K35/0266B23K35/3602B23K35/368B23K35/406
Inventor 蒋红军
Owner DANYANG HUALONG SUPERIOR STEEL
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