CN103212920A - Welding wire suitable for big hot-rolling back-up roll submerged arc overlaying welding - Google Patents
Welding wire suitable for big hot-rolling back-up roll submerged arc overlaying welding Download PDFInfo
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- CN103212920A CN103212920A CN2013101089785A CN201310108978A CN103212920A CN 103212920 A CN103212920 A CN 103212920A CN 2013101089785 A CN2013101089785 A CN 2013101089785A CN 201310108978 A CN201310108978 A CN 201310108978A CN 103212920 A CN103212920 A CN 103212920A
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Abstract
The invention discloses a welding wire suitable for big hot-rolling back-up roll submerged arc overlaying welding, and belongs to the technical field of hard-surface overlaying welding. The welding wire not only can be produced as a solid-core welding wire but also can be produced as a powder core tube-shaped welding wire. The welding wire comprises the following ingredients in parts by weight: 0.10-0.40% of C, 1.00-2.50% of Mn, 3.0-7.0% of Cr, 1.0-3.0% of Mo, 0.2-1.0% of V+Nb, 1.0-4.0% of Ni and the balance of Fe. The welding wire has the advantages that alloy subjected to overlaying welding by the welding wire has the characteristics of high hardness, good toughness, low fissure sensitivity and excellent abrasion resistance, and the service life of a big hot-rolling back-up roll can be effectively prolonged.
Description
Technical field
The invention belongs to the hard-face overlaying welding technical field, a kind of large-scale hot rolling backing roll submerged arc overlay welding welding wire that is suitable for particularly is provided; Be used for built-up welding and repair large-scale hot rolling backing roll.
Technical background
For adapting to rolling shapes and quality requirement, steel rolling is equipped constantly to automation, high efficiency and large scale development, and the appearance and size and the weight of roll constantly increase.The domestic producer that possesses the manufacturing large-scale roller has only several families, and the manufacturing cycle is long.External import roll costs an arm and a leg, and the manufacturing cycle is longer, and roll takies a large amount of spare part expenses of iron and steel enterprise.
At present, the technology of the small-sized roll of built-up welding is comparatively ripe, and weight also is in developing stage at home at the technology for repairing surfacing of the large-scale roller more than 30 tons, because also exist big gap the service life of the hot rolling backing roll of built-up welding reparation and new roller, domestic many producers do not adopt the built-up welding reparation.
The reparation difficulty of large-scale roller is as follows: 1, the selection difficulty of welding material is big, and welding material requires high, requires deposited metal to have good cracking resistance, suitable tensile strength, and overlay cladding in use has the good mechanical performance.2, welding procedure control is complicated.Because the large-scale roller volume is big, rapid heat dissipation requires the temperature control of roll suitable in welding process, otherwise very easily causes overlay cladding or roll body to crack.
Summary of the invention
The object of the present invention is to provide a kind of large-scale hot rolling backing roll submerged arc overlay welding welding wire that is suitable for, solved that overlay cladding work hardening speed in use is fast, problems such as serious washboard-like pattern in use appear in overlay cladding.Improved the service life of the large-scale roller of built-up welding reparation, made more than 80% of service life that reaches new roller its service life.
The thinking that the present invention deals with problems is: the composition of appropriate design welding wire, the solder flux that the welding wire adapted is suitable obtains the overlay cladding of mechanical property excellence, and the mechanical property that overlay cladding is suitable, rational heterogeneous microstructure are to improve the built-up welding repaired roller key in service life.The invention provides a kind of welding wire of composition, welding wire can be thought solid core welding wire, also can make powder core flux cored wire, and the composition range of welding wire is as follows: C:0.10-0.40%; Mn:1.00-2.50%; Cr:3.0-7.0%; Mo:1.0-3.0%; V+Nb: 0.2-1.0%; Ni:1.0-4.0%; Surplus is Fe; Be percetage by weight.
In the above composition, the C element improves the intensity and the hardness of deposited metal, its reasonable range is 0.10-0.40%, C content is low excessively, and intensity and hardness are lower, influences the wearability of the roll of built-up welding reparation, the C too high levels, then the toughness of overlay cladding can reduce, and localized delamination in use can appear in the built-up welding roller, serious washboard line can appear in roll surface, influences the service life of roll.The Mn element improves overlay cladding intensity and hardness, and Mn content crosses that low effect is not obvious, and too high meeting causes overlay cladding more retained austenite tissue to occur, causes roll roll surface hardness inhomogeneous, influences the service life of roll, and its zone of reasonableness is Mn1.00-2.50%.Cr also is the alloying element that improves overlay cladding intensity and hardness, and content is low excessively, and effect is not remarkable, and too high levels can cause the roll work hardening in use of built-up welding obvious, influences the service life of roll, and its zone of reasonableness is Cr3.0-7.0%.Mo is the strong carbide forming element, form MoC with carbon, but disperse is separated out in the process of tempering, improve overlay cladding intensity and hardness, its zone of reasonableness is Mo1.0-3.0%, and content is crossed to hang down and can be caused hardness not reach claimed range, too high meeting reduces the toughness of overlay cladding, influences the service life of roll.V and Nb are the strong carbide forming element, in drawing process, form VC, the NbC disperse is separated out, improve overlay cladding intensity and hardness, content is crossed to hang down and can be caused hardness not reach claimed range, the too high toughness that can reduce overlay cladding, influence the service life of roll, its zone of reasonableness is V+Nb0.2-1.0%.The main effect of Ni element is the toughness that improves deposited metal, help promoting bainite structure to form, content is low excessively, effect is not remarkable, too high levels can cause overlay cladding more retained austenite tissue to occur, causes roll roll surface hardness inhomogeneous, influence the service life of roll, its zone of reasonableness is Ni1.00-4.0%.
Of the present inventionly be that a little the alloy of this welding wire built-up welding has hardness height, good toughness, crack sensitivity is low and the characteristics of high abrasion resistance, the service life that can effectively improve large-scale hot rolling backing roll.
The specific embodiment
Embodiment 1: component of weld wire: C0.15%; Mn2.10%; Cr6.5%; Mo1.5 %; V 0.2; Nb 0.3%; Ni2.0%; All the other are Fe, adopt following welding procedure built-up welding repaired roller: welding current 550A, weldingvoltage 30V joins the HJ107 solder flux, speed of welding 500mm/Min.540 ℃ of tempering of postwelding roll, roll surface hardness HS52 after the tempering, built-up welding repaired roller reach forged steel roller level service life.
Embodiment 2: component of weld wire: C0.35%; Mn1.50%; Cr4.5%; Mo2.5 %; V 0.1; Nb 0.1%; Ni3.0%; All the other are Fe, adopt following welding procedure built-up welding repaired roller: welding current 550A, weldingvoltage 30V joins the HJ107 solder flux, speed of welding 500mm/Min.540 ℃ of tempering of postwelding roll, roll surface hardness HS58 after the tempering, built-up welding repaired roller reach forged steel roller level service life.
Claims (1)
1. one kind is suitable for large-scale hot rolling backing roll submerged arc overlay welding welding wire, it is characterized in that the composition percetage by weight is: C:0.10-0.40%; Mn:1.00-2.50%; Cr:3.0-7.0%; Mo:1.0-3.0%; V+Nb: 0.2-1.0%; Ni:1.0-4.0%; Surplus is Fe; Make solid core welding wire, or make powder core flux cored wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101089785A CN103212920A (en) | 2013-03-30 | 2013-03-30 | Welding wire suitable for big hot-rolling back-up roll submerged arc overlaying welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101089785A CN103212920A (en) | 2013-03-30 | 2013-03-30 | Welding wire suitable for big hot-rolling back-up roll submerged arc overlaying welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103212920A true CN103212920A (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101089785A Pending CN103212920A (en) | 2013-03-30 | 2013-03-30 | Welding wire suitable for big hot-rolling back-up roll submerged arc overlaying welding |
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| CN (1) | CN103212920A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418923A (en) * | 2013-08-30 | 2013-12-04 | 北京工业大学 | Overlaying repair method for worn roller |
| CN105772987A (en) * | 2016-05-18 | 2016-07-20 | 首钢总公司 | Welding wire used for continuous casting roller surfacing |
| CN110961827A (en) * | 2019-12-10 | 2020-04-07 | 上海海事大学 | High-strength high-toughness abrasion-resistant submerged arc welding wire for polar ice sea low-temperature environment |
| CN112643244A (en) * | 2020-11-30 | 2021-04-13 | 山东聚力焊接材料有限公司 | Self-protection flux-cored wire and preparation method thereof |
| CN114406522A (en) * | 2022-02-16 | 2022-04-29 | 首钢集团有限公司 | Welding wire for hot-rolled backup roll build-up welding repair and preparation method thereof |
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| US3527920A (en) * | 1968-03-21 | 1970-09-08 | Air Reduction | Welding of alloy steels |
| CN1069216A (en) * | 1992-05-21 | 1993-02-24 | 鞍山钢铁公司 | A kind of welding rod that is used for the medium carbon heat treated high strength steel gear |
| EP0953401A1 (en) * | 1996-11-18 | 1999-11-03 | Nippon Steel Corporation | Wire for welding high-chromium steel |
| CN1316311A (en) * | 2001-05-28 | 2001-10-10 | 宝山钢铁股份有限公司 | Hard-surface alloy wire for build-up welding roller surface |
| CN1412336A (en) * | 2001-10-16 | 2003-04-23 | 天泰銲材工业股份有限公司 | Welding alloy material for repairing and protecting high-temp. resistant weared roller |
| CN101104180A (en) * | 2006-07-14 | 2008-01-16 | 首钢总公司燕郊机械厂 | Technology for repairing semi-steel roller with flux-core welding wire built-up welding |
| CN101293308A (en) * | 2008-06-12 | 2008-10-29 | 上海施威焊接产业有限公司 | Solder wire formula for ultra-large type backing roll renovation layer |
| CN101722384A (en) * | 2008-10-29 | 2010-06-09 | 中冶集团建筑研究总院 | Flux-cored wire and method for welding cold-rolled back-up roll by same |
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2013
- 2013-03-30 CN CN2013101089785A patent/CN103212920A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3527920A (en) * | 1968-03-21 | 1970-09-08 | Air Reduction | Welding of alloy steels |
| CN1069216A (en) * | 1992-05-21 | 1993-02-24 | 鞍山钢铁公司 | A kind of welding rod that is used for the medium carbon heat treated high strength steel gear |
| EP0953401A1 (en) * | 1996-11-18 | 1999-11-03 | Nippon Steel Corporation | Wire for welding high-chromium steel |
| CN1316311A (en) * | 2001-05-28 | 2001-10-10 | 宝山钢铁股份有限公司 | Hard-surface alloy wire for build-up welding roller surface |
| CN1412336A (en) * | 2001-10-16 | 2003-04-23 | 天泰銲材工业股份有限公司 | Welding alloy material for repairing and protecting high-temp. resistant weared roller |
| CN101104180A (en) * | 2006-07-14 | 2008-01-16 | 首钢总公司燕郊机械厂 | Technology for repairing semi-steel roller with flux-core welding wire built-up welding |
| CN101293308A (en) * | 2008-06-12 | 2008-10-29 | 上海施威焊接产业有限公司 | Solder wire formula for ultra-large type backing roll renovation layer |
| CN101722384A (en) * | 2008-10-29 | 2010-06-09 | 中冶集团建筑研究总院 | Flux-cored wire and method for welding cold-rolled back-up roll by same |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103418923A (en) * | 2013-08-30 | 2013-12-04 | 北京工业大学 | Overlaying repair method for worn roller |
| CN103418923B (en) * | 2013-08-30 | 2015-06-17 | 北京工业大学 | Overlaying repair method for worn roller |
| CN105772987A (en) * | 2016-05-18 | 2016-07-20 | 首钢总公司 | Welding wire used for continuous casting roller surfacing |
| CN110961827A (en) * | 2019-12-10 | 2020-04-07 | 上海海事大学 | High-strength high-toughness abrasion-resistant submerged arc welding wire for polar ice sea low-temperature environment |
| CN112643244A (en) * | 2020-11-30 | 2021-04-13 | 山东聚力焊接材料有限公司 | Self-protection flux-cored wire and preparation method thereof |
| CN112643244B (en) * | 2020-11-30 | 2023-02-14 | 山东聚力焊接材料有限公司 | Self-protection flux-cored wire and preparation method thereof |
| CN114406522A (en) * | 2022-02-16 | 2022-04-29 | 首钢集团有限公司 | Welding wire for hot-rolled backup roll build-up welding repair and preparation method thereof |
| CN114406522B (en) * | 2022-02-16 | 2023-08-11 | 首钢集团有限公司 | Welding wire for overlaying repair of hot-rolled backup roll and preparation method thereof |
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Application publication date: 20130724 |