CN102896437A - Flux-cored wire for surfacing repairing of high-manganese-steel cast steel frog and steel rail - Google Patents
Flux-cored wire for surfacing repairing of high-manganese-steel cast steel frog and steel rail Download PDFInfo
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- CN102896437A CN102896437A CN2012103941313A CN201210394131A CN102896437A CN 102896437 A CN102896437 A CN 102896437A CN 2012103941313 A CN2012103941313 A CN 2012103941313A CN 201210394131 A CN201210394131 A CN 201210394131A CN 102896437 A CN102896437 A CN 102896437A
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Abstract
The invention provides a flux-cored wire for surfacing repairing of a high-manganese-steel cast steel frog and a steel rail, belonging to the technical field of welding. The flux-cored wire comprises an outer skin and a flux core, wherein the flux core is 12-25% of the total weight of the flux-cored wire; the outer skin is a 304 stainless steel belt; and the flux core comprises the following components in weight percentage of 5-20% of TiO2, 30-70% of Mn, 0.5-5% of Si, 0.5-5% of Al-Mg alloy, 2-15% of Ni, 5-30% of Cr-Fe alloy, 0.5-2.5% of fluoride and residual amount of iron powder. The flux-cored wire has the advantages that the technical performance is better, the welding efficiency is high and the labor intensity of workers is small; deposited metal is arranged on the flux-cored wire in a surfacing manner so that the contact fatigue resistance and the wear resistance are better; and the service life of the repaired high-manganese-steel cast steel frog and steel rail can be prolonged.
Description
Technical field
The invention belongs to welding technology field.Be particularly related to a kind of potassium steel cast-steel crossing and rail surfacing and repairing flux-cored wire.
Background technology
Track switch is the important component part of railway track, the railway frog that is formed by potassium steel block cast, it is again the critical component of track switch, because there is idle space in it, train wheel roll with impact force action under, very easily produce wearing and tearing, after railway frog may wear to certain limit, very unfavorable to traffic safety, must in time change and repair.What the railway cast-steel crossing generally adopted in the past is the SMAW build-up welding repair process, workman's technical quality is required height, and welding procedure is complicated, need employs lifting, transporting equipment and a large amount of artificial in the repair process, man hour of labour is long, intensity is large, and it is large to apply difficulty.
In recent years, flux-cored wire is compared with manual electric arc welding in China's development rapidly, and adopt the main feature of flux-cored wire welding to have: 1) current density is large, and efficient is high, and its deposition efficiency is that manual electric arc welding is high more than 1～3 times; 2) striking is easy, arc stability, and welding procedure is good; 3) save wlding, reduction cost, flux-cored wire is compared with stick electrode, has not only reduced a large amount of welding rod stumps, has saved wlding, and because the deposition efficiency of flux cored wire arc welding is high, thereby reduced weld interval widely, saved electric energy; 4) the flux-cored wire semi-automatic arc weld is a kind of welding method of efficient, high-quality, and welding efficiency is high, and labor strength is little.
Summary of the invention
The object of the present invention is to provide a kind of potassium steel cast-steel crossing and rail surfacing and repairing flux-cored wire.It is complicated to have solved prior art processes, the problems such as inefficiency and difficult popularization.
Flux-cored wire provided by the present invention comprises crust and medicine core, and the medicine core accounts for the 12-25% of flux-cored wire gross weight; Crust is 304 stainless steel belts; The percentage by weight of drug core component is: TiO
2: 5-20%, Mn:30-70%, Si:0.5-5%, Al-Mg alloy: 0.5-5%, Ni:2-15%, Cr-Fe alloy: 5-30%, fluoride: 0.5-2.5%, surplus is iron powder.
The percentage by weight of Al content is 40-60% in the Al-Mg alloy; The percentage by weight of Cr content is 60-70% in the Cr-Fe alloy; Fluoride is BaF
2, MgF
2, CaF
2, Na
3AlF
6And Na
2SiF
6In one or more.
The effect of each component is as follows in the medicine core:
TiO
2: be that slag forms component, can improve covering performance and the weld seam removability of slag of slag, and make electric arc concentrate, stable, improve appearance of weld and minimizing is splashed.
Mn: to the weld metal transition alloy elements, guarantee intensity and the toughness of deposited metal, reduce oxygen, sulfur content.
Si: suitable viscosity coefficient of dross is provided, increases arc stability.Guarantee the intensity of weld metal and reduce oxygen content as deoxidier.
Al-Mg: Main Function is the deoxidation denitrogenation.The Al2O3 that produces after the deoxidation has the effect of regulating the high-temperature slag physical property, is conducive to improve welding technological properties.
Ni: to the weld metal transition alloy elements, guarantee intensity and the toughness of deposited metal.
Fluoride: the various fluorides in the medicine core at high temperature all can decompose, and vaporization produces a large amount of fluorine steam and greatly reduces hydrogen dividing potential drop in the arc atmosphere, thereby plays the dehydrogenation ability.Fluoride in the medicine core reacts when welding with a large amount of rutile, produces TiF
4Can with hydrogen atom in the arc atmosphere and water vapour generation secondary response, form and to be insoluble to the stable hydrofluoride HF of molten steel, thereby reduced the hydrogen dividing potential drop in the arc atmosphere, reduce weld hydrogen content.
TiO
2?+?XF→XO?+?TiF
4
TiO
2?+?XF→XTiO
3?+?TiF
4
Product TiF
4Can with hydrogen atom in the arc atmosphere and water vapour generation secondary response:
TiF
4?+?H→TiF?+?HF↑
TiF
4+ H
2O (vapour) → TiO
2+ HF ↑
The adding of multiple fluoride is such as the BaF in the prescription
2The electric arc of lacking very much be can support, arc energy and welding wire burning velocity reduced during welding, easier control molten bath, partially fluorinated thing decomposites the ionization potentials such as lithium, potassium, sodium less than calcium, the arc stability of Effective Raise welding wire.
Iron powder: regulate composition, guarantee arc stability, improve deposition efficiency.
The invention has the advantages that, adopt the present invention to carry out potassium steel cast-steel crossing and rail built-up welding reparation, welding procedure is simple, efficient is high, labor strength is little, its built-up welding deposited metal has preferably contacting fatigue resistance and anti-wear performance, can prolong the service life after potassium steel cast-steel crossing and rail are repaired.
The specific embodiment
Embodiment 1:
Potassium steel cast-steel crossing and rail surfacing and repairing flux-cored wire comprise crust and medicine core, and the medicine core accounts for 16% of flux-cored wire gross weight; Crust adopts 304 stainless steel belts, and the chemical composition of medicine core (percentage by weight) is: TiO
2: 5%, Mn:55%, Si:2%, Al-Mg alloy: 1%, Ni:8%, Cr-Fe alloy: 25%, BaF
2: 1%, MgF
2: 1%, iron powder: 2%.
The percentage by weight of Al content is 42% in the Al-Mg alloy; The percentage by weight of Cr content is 60% in the Cr-Fe alloy.
Embodiment 2:
Potassium steel cast-steel crossing and rail surfacing and repairing flux-cored wire comprise crust and medicine core, and the medicine core accounts for 13% of flux-cored wire gross weight; Crust adopts 304 stainless steel belts, and the chemical composition of medicine core (percentage by weight) is: TiO
2: 10%, Mn:40%, Si:5%, Al-Mg alloy: 0.5%, Ni:12%, Cr-Fe alloy: 30%, CaF
2: 1.5%, iron powder: 1%.
The percentage by weight of Al content is 51% in the Al-Mg alloy; The percentage by weight of Cr content is 70% in the Cr-Fe alloy.
Embodiment 3:
Potassium steel cast-steel crossing and rail surfacing and repairing flux-cored wire comprise crust and medicine core, and the medicine core accounts for 20% of flux-cored wire gross weight; Crust adopts 304 stainless steel belts, and the chemical composition of medicine core (percentage by weight) is: TiO
2: 15%, Mn:65%, Si:1%, Al-Mg alloy: 3%, Ni:4%, Cr-Fe alloy: 8%, CaF
2: 0.5%, Na
3AlF
6: 1%,, iron powder: 2.5%.
The percentage by weight of Al content is 60% in the Al-Mg alloy; The percentage by weight of Cr content is 65% in the Cr-Fe alloy.
Embodiment 4:
Potassium steel cast-steel crossing and rail surfacing and repairing flux-cored wire comprise crust and medicine core, and the medicine core accounts for 25% of flux-cored wire gross weight; Crust adopts 304 stainless steel belts, and the chemical composition of medicine core (percentage by weight) is: TiO
2: 20%, Mn:31%, Si:4%, Al-Mg alloy: 5%, Ni:15%, Cr-Fe alloy: 20%, MgF
2: 0.2%, Na
2SiF
6: 0.3%, iron powder: 4.5%.
The percentage by weight of Al content is 55% in the Al-Mg alloy; The percentage by weight of Cr content is 68% in the Cr-Fe alloy.
The flux-cored wire for preparing among the embodiment 1-4 is carried out the built-up welding of potassium steel cast-steel crossing and rail, arc stability in the welding process, it is few to splash, and appearance of weld, to take off slag good; The mechanical performance index that adopts GB/229-2007 and GB228-2002 standard to record its deposited metal is: tensile strength sigma
b: 800-1000MPa, yield strength σ
0.2: 400-500MPa, percentage elongation δ
5: 25-35%, impact absorbing energy A
Kv(0 ℃): 80-100J, hardness (HRC): 42-46.
Claims (4)
1. a potassium steel cast-steel crossing and rail surfacing and repairing flux-cored wire comprise crust and medicine core, and it is characterized in that: the medicine core accounts for the 12-25% of flux-cored wire gross weight; Crust is 304 stainless steel belts; The percentage by weight of drug core component is: TiO
2: 5-20%, Mn:30-70%, Si:0.5-5%, Al-Mg alloy: 0.5-5%, Ni:2-15%, Cr-Fe alloy: 5-30%, fluoride: 0.5-2.5%, surplus is iron powder.
2. flux-cored wire according to claim 1 is characterized in that, the percentage by weight of Al content is 40-60% in the described Al-Mg alloy.
3. flux-cored wire according to claim 1 is characterized in that, the percentage by weight of Cr content is 60-70% in the described Cr-Fe alloy.
4. flux-cored wire according to claim 1 is characterized in that, described fluoride is BaF
2, MgF
2, CaF
2, Na
3AlF
6And Na
2SiF
6In one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103941313A CN102896437A (en) | 2012-10-16 | 2012-10-16 | Flux-cored wire for surfacing repairing of high-manganese-steel cast steel frog and steel rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103941313A CN102896437A (en) | 2012-10-16 | 2012-10-16 | Flux-cored wire for surfacing repairing of high-manganese-steel cast steel frog and steel rail |
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| Publication Number | Publication Date |
|---|---|
| CN102896437A true CN102896437A (en) | 2013-01-30 |
Family
ID=47569080
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103941313A Pending CN102896437A (en) | 2012-10-16 | 2012-10-16 | Flux-cored wire for surfacing repairing of high-manganese-steel cast steel frog and steel rail |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2518211C1 (en) * | 2013-05-07 | 2014-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" | Powder wire |
| CN105382441A (en) * | 2015-12-18 | 2016-03-09 | 天津市庆鑫祥科技发展有限公司 | Stainless steel welding wire and preparation method thereof |
| RU2579328C1 (en) * | 2014-10-24 | 2016-04-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" | Charge of flux-cored wire |
| RU2623981C2 (en) * | 2015-12-09 | 2017-06-29 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" | Charge for wire circuit |
| RU2681049C1 (en) * | 2017-11-21 | 2019-03-01 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет", ФГБОУ ВО "СибГИУ" | Powder wire charge for surfacing in nitrogen-containing environment |
| RU2682940C1 (en) * | 2018-06-06 | 2019-03-25 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Омский государственный технический университет" | Flux cored wire |
| CN111515580A (en) * | 2020-04-14 | 2020-08-11 | 山东能源重装集团恒图科技有限公司 | Abrasion-resistant metal powder core type stainless steel flux-cored wire and application thereof |
| CN111590236A (en) * | 2019-11-26 | 2020-08-28 | 北京特冶工贸有限责任公司 | Welding rod for bainite steel electric arc welding |
| CN112894199A (en) * | 2021-01-20 | 2021-06-04 | 浙江鸿途焊接科技有限公司 | Consumable electrode gas shielded welding flux-cored wire for ultralow-temperature high manganese steel |
| RU2750737C1 (en) * | 2020-10-19 | 2021-07-01 | Общество с ограниченной ответственностью "Регионстрой" | Flux cored wire for mechanised steel surfacing |
| RU2753632C1 (en) * | 2021-01-11 | 2021-08-18 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет", ФГБОУ ВО "СибГИУ" | Flux-cored wire |
| CN113414518A (en) * | 2021-06-09 | 2021-09-21 | 株洲湘江电焊条有限公司 | Low-dust multipurpose high-manganese steel flux-cored wire and preparation process thereof |
| RU2756550C1 (en) * | 2021-02-12 | 2021-10-01 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет", ФГБОУ ВО "СибГИУ" | Powder wire |
| RU2762690C1 (en) * | 2021-06-04 | 2021-12-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет", ФГБОУ ВО "СибГИУ" | Powder wire |
| CN114769938A (en) * | 2022-04-24 | 2022-07-22 | 燕山大学 | Metal flux-cored wire and preparation method and application thereof |
| RU2779557C1 (en) * | 2022-03-15 | 2022-09-09 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет" ФГБОУ ВО "СибГИУ" | Cord wire |
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| CN101104232A (en) * | 2007-08-09 | 2008-01-16 | 武汉铁锚焊接材料股份有限公司 | Low alloy steel flux-cored welding wire for carbon dioxide gas protection welding |
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| CN101104232A (en) * | 2007-08-09 | 2008-01-16 | 武汉铁锚焊接材料股份有限公司 | Low alloy steel flux-cored welding wire for carbon dioxide gas protection welding |
| CN101722378A (en) * | 2008-10-29 | 2010-06-09 | 中冶集团建筑研究总院 | Self-protected flux-cored wire |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2518211C1 (en) * | 2013-05-07 | 2014-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" | Powder wire |
| RU2579328C1 (en) * | 2014-10-24 | 2016-04-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" | Charge of flux-cored wire |
| RU2623981C2 (en) * | 2015-12-09 | 2017-06-29 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" | Charge for wire circuit |
| CN105382441A (en) * | 2015-12-18 | 2016-03-09 | 天津市庆鑫祥科技发展有限公司 | Stainless steel welding wire and preparation method thereof |
| RU2681049C1 (en) * | 2017-11-21 | 2019-03-01 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет", ФГБОУ ВО "СибГИУ" | Powder wire charge for surfacing in nitrogen-containing environment |
| RU2682940C1 (en) * | 2018-06-06 | 2019-03-25 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Омский государственный технический университет" | Flux cored wire |
| CN111590236A (en) * | 2019-11-26 | 2020-08-28 | 北京特冶工贸有限责任公司 | Welding rod for bainite steel electric arc welding |
| CN111515580A (en) * | 2020-04-14 | 2020-08-11 | 山东能源重装集团恒图科技有限公司 | Abrasion-resistant metal powder core type stainless steel flux-cored wire and application thereof |
| RU2750737C1 (en) * | 2020-10-19 | 2021-07-01 | Общество с ограниченной ответственностью "Регионстрой" | Flux cored wire for mechanised steel surfacing |
| RU2753632C1 (en) * | 2021-01-11 | 2021-08-18 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет", ФГБОУ ВО "СибГИУ" | Flux-cored wire |
| CN112894199A (en) * | 2021-01-20 | 2021-06-04 | 浙江鸿途焊接科技有限公司 | Consumable electrode gas shielded welding flux-cored wire for ultralow-temperature high manganese steel |
| RU2756550C1 (en) * | 2021-02-12 | 2021-10-01 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет", ФГБОУ ВО "СибГИУ" | Powder wire |
| RU2762690C1 (en) * | 2021-06-04 | 2021-12-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет", ФГБОУ ВО "СибГИУ" | Powder wire |
| CN113414518A (en) * | 2021-06-09 | 2021-09-21 | 株洲湘江电焊条有限公司 | Low-dust multipurpose high-manganese steel flux-cored wire and preparation process thereof |
| RU2779557C1 (en) * | 2022-03-15 | 2022-09-09 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет" ФГБОУ ВО "СибГИУ" | Cord wire |
| CN114769938A (en) * | 2022-04-24 | 2022-07-22 | 燕山大学 | Metal flux-cored wire and preparation method and application thereof |
| CN114769938B (en) * | 2022-04-24 | 2023-07-04 | 燕山大学 | Metal flux-cored wire and preparation method and application thereof |
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Application publication date: 20130130 |