CN1923437A - Pile-up welding flux-cored wire for restoring cold rolling support roller operational layer and method for manufacturing same - Google Patents
Pile-up welding flux-cored wire for restoring cold rolling support roller operational layer and method for manufacturing same Download PDFInfo
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- CN1923437A CN1923437A CN 200610021800 CN200610021800A CN1923437A CN 1923437 A CN1923437 A CN 1923437A CN 200610021800 CN200610021800 CN 200610021800 CN 200610021800 A CN200610021800 A CN 200610021800A CN 1923437 A CN1923437 A CN 1923437A
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- cored wire
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Abstract
The invention relates to a welding drug core welding wire used to repair the working layer of cold rolling middle roller. Wherein, said welding wire comprises coat and drug core; said drug core comprises medium-carbon ferromanganese at 1.0-1.4%, high carbon ferro-chrome at 3.5-4.5%, ferro-molybdenum at 1.0-3.0%, ferro-vanadium at 0.7-1.5%, ferrocolumbium at 0.06-0.16%, ferrotungsten at 1.0-2.8%; ferrotitanium at 0.05-0.09%; nickel at 0.5-0.9%, silicon iron at 0.70-1.3%, rare-earth at 1.0-5.0%, derbyshire spar at 4.5-10.5%, and the left is iron powder. The invention has simple process, and the rigidity is HRC46-49, without crack.
Description
Technical field
The invention belongs to welding material and manufacture method thereof, particularly relate to a kind of pile-up welding flux-cored wire for restoring cold rolling support roller operational layer and manufacture method thereof.
Background technology
Cold rolling support roller is the critical component that cold-rolled steel sheet is produced required parts, bear bigger alternate stress during work, hardness of roll body reaches HRC46～49, also require to have the ability of anti-strip preferably simultaneously, present for this reason manufacturer generally adopts high-carbon low-alloy steel such as 9Cr3Mo through forging and the manufacturing of complicated heat treatment process forms, and costs an arm and a leg.The consumption of the annual cold rolling support roller in the whole nation is very big, just scraps because of repairing very big the reparation hardly of difficulty again, causes enormous economic loss.
Technique for overlaying is mainly adopted in reparation to cold rolling support roller, and it comprises weld preheating, built-up welding and the post weld heat treatment process of roller.Built-up welding comprises the built-up welding of transition zone and working lining, and the resurfacing welding material that uses in this operation is the key factor in decision surfacing layer metal performance and cold rolling support roller service life.Also there is not at present special cold rolling support roller operational layer welding wire.
Summary of the invention
Technical problem to be solved by this invention provides a kind of pile-up welding flux-cored wire for restoring cold rolling support roller operational layer.The hardness of this welding wire built-up welding layer metal reaches HRC46～49, has good wearability, cracking resistance and antifatigue destructive characteristics.
The present invention also will provide a kind of manufacture method of above-mentioned welding wire.
The technical scheme that technical solution problem of the present invention is adopted is: pile-up welding flux-cored wire for restoring cold rolling support roller operational layer, comprise crust and medicine core, the component of described medicine core content by weight percentage comprises: mid-carbon fe-mn: 1.0～1.4%, high carbon ferro-chrome: 3.5～4.5%, molybdenum-iron: 1.0～3.0%, vanadium iron: 0.7～1.5%, ferro-niobium 0.06～0.16%, ferrotungsten: 1.0～2.8%, ferrotianium: 0.05～0.09%, metallic nickel: 0.5～0.9%, ferrosilicon: 0.70～1.3%, rare earth: 1.0～5.0%, fluorite: 4.5～10.5%, all the other are iron powders.
Further, the granularity (order) of described medicine core component is respectively: mid-carbon fe-mn: 80～120, high carbon ferro-chrome: 80～120, molybdenum-iron: 80～120, vanadium iron: 60～120, ferro-niobium: 80～120, ferrotungsten: 60～120, ferrotianium: 60～120, metallic nickel: 80～120, ferrosilicon: 60～120, rare earth: 80～120, fluorite: 60～120, iron powder: 80～120.
The manufacture method of pile-up welding flux-cored wire for restoring cold rolling support roller operational layer may further comprise the steps: after the oven dry of 1) cold-rolled strip being with, being deoiled through cutting out, be rolled into " U " type; 2) preparation medicine core batching and oven dry; 3) with being rolled into " O " type behind the filling medicine core in steel band " U " the type groove, be drawn into flux-cored wire then.
Further, the described cold-rolled strip of step 1 is that thickness is that 0.3～0.8mm, width are the cold-rolled strip of 8.0～16.0mm.
Further, described cold-rolled strip adopts the HO8A cold-rolled strip.
Further, the described flux-cored wire of step 3 is that diameter is the flux-cored wire of 2.0～5.0mm.
The invention has the beneficial effects as follows: manufacture method is simple, and the hardness of the surfacing layer metal of welding wire reaches HRC46～49, and cracking resistance is good in the weld deposit process, is difficult for cracking, when reaching the cold rolling support roller built-up welding fully and repairing to the specification requirement of working lining built-up welding.Hardfacing alloy not only has higher hardness, and wearability is good, and has toughness preferably, and crack resistance is good, thereby can improve the service life of backing roll.
The specific embodiment
Because Ti, V and Nb element all have stronger crystal grain thinning and solution strengthening ability, especially better effects if when adding that two kinds of elements are above, V and Nb element also have stronger precipitation strength ability, they and Mo element all are the strong carbide forming elements, add that these alloying elements make the crystallite dimension of deposited metal little, hardness is high, toughness is better, preferred 0.05～0.09% (weight percent content, as follows) of ferrotianium of the present invention, vanadium iron are preferred 0.7～1.5%, ferro-niobium is preferred 0.06～0.16%, molybdenum-iron preferred 1.0～3.0%.
The carbide of W element is stable, is difficult for during tempering separating out and assembling, and the temper resistance of steel is improved, can cause post-curing by carbide precipitate during tempering under higher temperature, the W element can stop grain growth, increases quenching degree, thereby improve the wearability of steel, ferrotungsten of the present invention preferred 1.0～2.8%.
Adding Ni element can improve the intensity and the toughness of alloy, contains at the same time under the situation of Ni and Cr element, and the Ni element can also improve the temper resistance of hardfacing alloy layer greatly, metallic nickel of the present invention preferred 0.5～0.9%.
Add a certain amount of Cr element and improve the Cr/C ratio, easily generate the high rigidity M of isolated strip form
7C
3The type carbide, than the M of net distribution
3C type carbide can strengthen the continuity of matrix, thereby improves the toughness of integral material, high carbon ferro-chrome of the present invention preferred 3.5～4.5%.
The Mn element can promote the dissolving of strong carbide in austenite, and the content of alloying element in balance carbide and the austenite is given full play to the precipitation strength and the solution strengthening ability of V, Nb and Mo element; In addition, improve Mn/C than the effect that can also play the formation that reduces grain boundary carbide, thereby improve the toughness of overlay cladding to a certain extent, but the Mn constituent content is unsuitable too high, otherwise can increase the temper brittleness of overlay cladding, mid-carbon fe-mn of the present invention preferred 1.0～1.4%.
The adding of rare earth has hardfacing alloy to suppress preferably hydrogen embrittlement, reduce temper brittleness and suppress P poly-partially ability on crystal boundary in heat treatment process, thereby can reach the purpose of the toughness of raising hardfacing alloy.In addition, because rare earth has the effect that makes inclusion modification, purifies crystal boundary and stronger crystal grain thinning, join in the resurfacing welding material and can play the effect of improving the overlay cladding performance, rare earth of the present invention preferred 1.0～5.0%.
Si element deoxidizing capacity in the ferrosilicon is very strong, can form SiO with the FeO effect
2, enter slag then and be excluded; The Si element can improve the quenching degree and the intensity of surfacing layer metal, and improves its temper resistance, but the Si constituent content can not be too high, thereby otherwise easily produces grain boundary carbide and be prone to crackle.Ferrosilicon of the present invention preferred 0.70～1.3%.
The main component of fluorite is CaF
2, it can reduce the fusing point and the viscosity of slag, increases flowability, is beneficial to slag making; It can reduce the hydrogen dividing potential drop in the arc atmosphere, causes hydrogen content minimizing in the weld metal, improves the toughness and the anti-crack ability of weld metal.Fluorite of the present invention preferred 4.5～10.5%.
Embodiment 1:
Medicine core component content by weight percentage comprises: mid-carbon fe-mn: high carbon ferro-chrome 1.0%: molybdenum-iron 3.5%: vanadium iron 1.0%: 0.7%, ferro-niobium 0.06%, ferrotungsten: ferrotianium 1.0%: metallic nickel 0.05%: ferrosilicon 0.5%: rare earth 0.70%: fluorite 1.0%: 4.5%, all the other are iron powders.
The hardness of produced welding wire built-up welding layer metal is greater than HRC46.
Embodiment 2:
Medicine core component content by weight percentage comprises: mid-carbon fe-mn: high carbon ferro-chrome 1.4%: molybdenum-iron 4.5%: vanadium iron 3.0%: 1.5%, ferro-niobium 0.16%, ferrotungsten: ferrotianium 2.8%: metallic nickel 0.09%: ferrosilicon 0.9%: rare earth 1.3%: fluorite 5.0%: 10.5%, all the other are iron powders.
Produced welding wire built-up welding layer metal hardness is HRC49.
Embodiment 3:
Medicine core component content by weight percentage comprises: mid-carbon fe-mn: high carbon ferro-chrome 1.1%: molybdenum-iron 4.1%: vanadium iron 2.0%: 0.9%, ferro-niobium 0.09%, ferrotungsten: ferrotianium 1.5%: metallic nickel 0.07%: ferrosilicon 0.7%: rare earth 0.90%: fluorite 3.5%: 7.5%, all the other are iron powders.
Produced welding wire built-up welding layer metal hardness is HRC48.
Embodiment 4:
Medicine core component content by weight percentage comprises: mid-carbon fe-mn: high carbon ferro-chrome 1.3%: molybdenum-iron 4.3%: vanadium iron 2.5%: 1.2%, ferro-niobium 0.12%, ferrotungsten: ferrotianium 2.0%: metallic nickel 0.07%: ferrosilicon 0.7%: rare earth 0.90%: fluorite 3.5%: 7.5%, all the other are iron powders.
Produced welding wire built-up welding layer metal hardness is HRC48.
Claims (6)
1, pile-up welding flux-cored wire for restoring cold rolling support roller operational layer, comprise crust and medicine core, it is characterized in that: the component of described medicine core content by weight percentage comprises: mid-carbon fe-mn: 1.0～1.4%, high carbon ferro-chrome: 3.5～4.5%, molybdenum-iron: 1.0～3.0%, vanadium iron: 0.7～1.5%, ferro-niobium 0.06～0.16%, ferrotungsten: 1.0～2.8%, ferrotianium: 0.05～0.09%, metallic nickel: 0.5～0.9%, ferrosilicon: 0.70～1.3%, rare earth: 1.0～5.0%, fluorite: 4.5～10.5%, all the other are iron powders.
2, pile-up welding flux-cored wire for restoring cold rolling support roller operational layer as claimed in claim 1 is characterized in that: the granularity (order) of described medicine core component is respectively: mid-carbon fe-mn: 80～120, high carbon ferro-chrome: 80～120, molybdenum-iron: 80～120, vanadium iron: 60～120, ferro-niobium: 80～120, ferrotungsten: 60～120, ferrotianium: 60～120, metallic nickel: 80～120, ferrosilicon: 60～120, rare earth: 80～120, fluorite: 60～120, iron powder: 80～120.
3, the manufacture method of the described pile-up welding flux-cored wire for restoring cold rolling support roller operational layer of claim 1 is characterized in that: may further comprise the steps: after the oven dry of 1) cold-rolled strip being with, being deoiled through cutting out, be rolled into " U " type; 2) preparation medicine core batching and oven dry; 3) with being rolled into " O " type behind the filling medicine core in steel band " U " the type groove, be drawn into flux-cored wire then.
4, the manufacture method of pile-up welding flux-cored wire for restoring cold rolling support roller operational layer as claimed in claim 3 is characterized in that: the described cold-rolled strip of step 1 is that thickness is that 0.3～0.8mm, width are the cold-rolled strip of 8.0～16.0mm.
5, the manufacture method of pile-up welding flux-cored wire for restoring cold rolling support roller operational layer as claimed in claim 4 is characterized in that: described cold-rolled strip adopts the H08A cold-rolled strip.
6, the manufacture method of pile-up welding flux-cored wire for restoring cold rolling support roller operational layer as claimed in claim 3 is characterized in that: the described flux-cored wire of step 3 is that diameter is the flux-cored wire of 2.0～5.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610021800 CN1923437A (en) | 2006-09-08 | 2006-09-08 | Pile-up welding flux-cored wire for restoring cold rolling support roller operational layer and method for manufacturing same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610021800 CN1923437A (en) | 2006-09-08 | 2006-09-08 | Pile-up welding flux-cored wire for restoring cold rolling support roller operational layer and method for manufacturing same |
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| CN1923437A true CN1923437A (en) | 2007-03-07 |
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| CN 200610021800 Pending CN1923437A (en) | 2006-09-08 | 2006-09-08 | Pile-up welding flux-cored wire for restoring cold rolling support roller operational layer and method for manufacturing same |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049593A (en) * | 2009-11-04 | 2011-05-11 | 中冶焊接科技有限公司 | Cold rolling back-up roll cover face submerged arc surfacing method and surfacing solder wire material |
| CN102139422A (en) * | 2010-02-02 | 2011-08-03 | 北京赛亿科技股份有限公司 | Transitional layer self-protecting metal core surfacing welding wire for repairing cold-rolled backup roller |
| CN101817125B (en) * | 2009-02-27 | 2011-12-07 | 北京赛亿表面工程技术有限公司 | Method for preparing amorphous abrasion-resistant surfacing coat |
| CN102343486A (en) * | 2010-07-30 | 2012-02-08 | 北京固本科技有限公司 | High wear-resistant erosion-resistant surfacing flux-cored wire for fan blade |
| CN102744533A (en) * | 2012-07-05 | 2012-10-24 | 武汉宇宙科技有限公司 | Build-up welding flux-cored wire for pinch roll |
| CN102922166A (en) * | 2012-10-29 | 2013-02-13 | 山东飞乐焊业有限公司 | High-deposition-efficiency metal powder-cored and flux-cored wire |
| CN103612024A (en) * | 2013-11-18 | 2014-03-05 | 武汉铁锚焊接材料股份有限公司 | Submerged arc flux-cored wire for Cr13 series universal type build up welding, preparation for submerged arc flux-cored wire and application for submerged arc flux-cored wire |
| CN107378310A (en) * | 2017-08-19 | 2017-11-24 | 芜湖鼎瀚再制造技术有限公司 | Continuous Casting Rolls are remanufactured with submerged-arc welding flux cored wire and its welding procedure |
| CN111618473A (en) * | 2020-06-01 | 2020-09-04 | 鞍钢附企三炼钢修造总厂 | Ultra-high wear-resistant flux-cored wire for grate bar |
| CN114571136A (en) * | 2019-12-17 | 2022-06-03 | 四川国鑫机械制造有限公司 | Flux-cored wire for roller repair and preparation method |
-
2006
- 2006-09-08 CN CN 200610021800 patent/CN1923437A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101817125B (en) * | 2009-02-27 | 2011-12-07 | 北京赛亿表面工程技术有限公司 | Method for preparing amorphous abrasion-resistant surfacing coat |
| CN102049593B (en) * | 2009-11-04 | 2013-06-19 | 中冶焊接科技有限公司 | Cold rolling back-up roll cover face submerged arc surfacing method and surfacing solder wire material |
| CN102049593A (en) * | 2009-11-04 | 2011-05-11 | 中冶焊接科技有限公司 | Cold rolling back-up roll cover face submerged arc surfacing method and surfacing solder wire material |
| CN102139422A (en) * | 2010-02-02 | 2011-08-03 | 北京赛亿科技股份有限公司 | Transitional layer self-protecting metal core surfacing welding wire for repairing cold-rolled backup roller |
| CN102343486A (en) * | 2010-07-30 | 2012-02-08 | 北京固本科技有限公司 | High wear-resistant erosion-resistant surfacing flux-cored wire for fan blade |
| CN102343486B (en) * | 2010-07-30 | 2014-10-08 | 北京固本科技有限公司 | High wear-resistant erosion-resistant surfacing flux-cored wire for fan blade |
| CN102744533A (en) * | 2012-07-05 | 2012-10-24 | 武汉宇宙科技有限公司 | Build-up welding flux-cored wire for pinch roll |
| CN102744533B (en) * | 2012-07-05 | 2016-01-20 | 武汉宇宙科技有限公司 | A kind of pinch roll flux-cored wire |
| CN102922166A (en) * | 2012-10-29 | 2013-02-13 | 山东飞乐焊业有限公司 | High-deposition-efficiency metal powder-cored and flux-cored wire |
| CN103612024A (en) * | 2013-11-18 | 2014-03-05 | 武汉铁锚焊接材料股份有限公司 | Submerged arc flux-cored wire for Cr13 series universal type build up welding, preparation for submerged arc flux-cored wire and application for submerged arc flux-cored wire |
| CN103612024B (en) * | 2013-11-18 | 2016-08-17 | 武汉铁锚焊接材料股份有限公司 | A kind of Cr13 serial universal built-up welding submerged arc flux-cored wire and preparation thereof and application |
| CN107378310A (en) * | 2017-08-19 | 2017-11-24 | 芜湖鼎瀚再制造技术有限公司 | Continuous Casting Rolls are remanufactured with submerged-arc welding flux cored wire and its welding procedure |
| CN114571136A (en) * | 2019-12-17 | 2022-06-03 | 四川国鑫机械制造有限公司 | Flux-cored wire for roller repair and preparation method |
| CN111618473A (en) * | 2020-06-01 | 2020-09-04 | 鞍钢附企三炼钢修造总厂 | Ultra-high wear-resistant flux-cored wire for grate bar |
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