CN102240868A - High-tenacity wear-resisting overlaying alloy welding wire for cold-rolling support roller - Google Patents
High-tenacity wear-resisting overlaying alloy welding wire for cold-rolling support roller Download PDFInfo
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- CN102240868A CN102240868A CN2011101235284A CN201110123528A CN102240868A CN 102240868 A CN102240868 A CN 102240868A CN 2011101235284 A CN2011101235284 A CN 2011101235284A CN 201110123528 A CN201110123528 A CN 201110123528A CN 102240868 A CN102240868 A CN 102240868A
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Abstract
The invention relates to a high-tenacity wear-resisting overlaying alloy welding wire for a cold-rolling support roller, and the overlaying alloy welding wire provided by the invention has excellent tenacity and suitable hardness. The alloy welding wire comprises the following chemical components by weight percent: 0.2-0.4% of C, 1.0-2.0% of Mn, 0.5-1.5% of Si, 3.0-6.0% of Cr, 0.5-2.0% of Mo, 1.0-3.0% of Ni, less than or equal to 0.02% of P, less than or equal to 0.01% of S, and impurities, wherein the impurities comprise mineral substances and alloy powder; the mineral substances, the content of which is 2-5%, comprises one or more than one of CaF2, CaCO3, Na3SiF6 and LiF2; the alloy powder, the total content of which is 0.3-2.0%, comprises one or more than one of vanadium, tungsten, niobium, titanium, aluminum, and the like; and 0.1-0.5% of rare earth is additionally added. The welding wire is matched with a suitable welding process, thereby acquiring the hardness of HRC (Rockwell hardness) 48-53. A low-carbon steel belt is used for wrapping the alloy powder and the mineral substances and then rolling and drawing are performed, thereby forming the welding wire. A reasonable component design is matched with HJ107, grains are refined and sulfur-removing components are added, so that the high-tenacity wear-resisting overlaying alloy welding wire is free from hot crack in an overlaying process, has the hardness and tenacity suitable for cold-rolling rollers, and meets the demand of overlaying a cold roller.
Description
Technical field
The present invention relates to a kind of alloy welding wire, relate in particular to a kind of high-ductility high wear-resistant cold rolling support roller hardfacing alloy welding wire.
Background technology
Can bear huge normal pressure and shearing force during the work of cold roll backing roll, be easy to cause roll crown to become piece to come off.Backing roll requires distortion the smaller the better when rolling, and this just requires the hardness of surfacing layer metal to reach more than the HRC48 at least.Obtain hardness and be easier to realize, but its toughness just is difficult to guarantee, can't avoid the early stage sprouting and the expansion of fatigue crack, cause roll to destroy at the metal ratio of HRC48.
Urgent need will be developed a kind of existing suitable hardness to satisfy cold rolling industrial and mineral now, and the germinating of enough toughness delayed cracks and the hardfacing alloy of expansion are arranged again.This has just proposed three technical problems that need to be resolved hurrily, and the one, the hardness that guarantee hardfacing alloy is at HRC 50～53.The 2nd, satisfy under the prerequisite of above-mentioned hardness, adjust alloying component, the impact flexibility of deposited metal is reached more than 40 joules.The 3rd, cold and hot crackle does not appear when welding cold-rolled roller.
Summary of the invention
According to technical problem set forth above, the invention provides a kind of high-ductility high wear-resistant cold rolling support roller hardfacing alloy welding wire that has excellent toughness and suitable hardness and do not have cold and hot crackle, this alloy welding wire chemical composition is percentage by weight: C:0.2～0.4; Mn:1.0～2.0; Si:0.5～1.5; Cr:3.0～6.0; Mo:0.5～2.0; Ni:1.0～3.0; P :≤0.02; S≤0.01; Impurity is mineral matter and alloy powder.Described impurity comprises CaF2, CaCO3, one or more mineral matters of Na3SiF6, LiF2, and content is 2～5%; Elements such as vanadium, tungsten, niobium, titanium, aluminium wherein one or more, the content summation is 0.3～2.0%; Wherein also added a small amount of rare earth, content is 0.1～0.5%.Soldering wire alloy content is 6～12%.Welding wire cooperates suitable welding procedure, obtains the hardness of HRC48～53, and corresponding welding procedure is: cooperate the HJ107 solder flux, 300～500 amperes of welding currents, 30～35 volts of voltages.Speed of welding 350～600 mm/min.200～300 ℃ of interlayer temperatures, postheating.Then through 560 ℃ of 8 hours temper.This welding wire adopts mild-carbon steel strip parcel alloy powder and mineral matter to form through rolling drawing.
Beneficial effect of the present invention is: the present invention designs by rational composition, cooperate HJ107,, add the sulphur removal composition by crystal grain thinning, do not occur fire check when making welding wire built-up welding, and have the built-up welding requirement that the hardness that is applicable to cold roll and toughness can satisfy cold roller.
Characteristics of the present invention are to select impure few raw material in standard compliant material, especially will control the content of sulphur phosphorus, make sulphur be controlled at below 0.03%, and phosphorus is controlled below 0.035%.Studies show that phosphorus content can obtain the hardness requirement in 0.2～0.4% scope in the welding wire, cooperate again to add and to satisfy the requirement of welding wire carbon by high carbon ferro-chrome.Chromium content is controlled at 3～6% scope, and combines with carbon with other alloying element, forms carbide, plays the purpose of hardening built-up welding layer metal, crackle can not occur when guaranteeing built-up welding.Metallic elements such as molybdenum, manganese, silicon alloy have been added in the alloy welding wire, the effect that these alloys can play deoxidation and improve hardness.Molybdenum content is 0.5～2%, adds this kind metallic element and can prevent temper brittleness.Manganese content is 1.0～2.0%, and manganese can play the effect of deoxidation, and can strengthen surfacing layer metal, and too much manganese can cause tempering hardness to descend, and causes the hardness inhomogeneities.The content of silicon is 0.5～1.5%, and the adding of silicon also is for deoxidation and reinforcement.Studies show that silicon is crossed the toughness deficiency of surfacing layer metal when hanging down, and fire check will occur when too high, and toughness descends.Also added in vanadium, tungsten, niobium, titanium, the aluminium one or more in this alloy welding wire, these alloying elements and carbon, nitrification, disperse is distributed in the martensite, has improved hardness, refinement crystal grain, but impact toughness does not have obvious harm.The content summation of above element should be controlled in 0.3～2.0%.In addition the Ni that has also added appropriate amount in the alloy is to improve toughness.Ni not only can strengthen matrix, and can significantly improve the toughness of deposited metal.Experiment shows, the content of Ni should be controlled at 1～3% but too much toughness is not had the improvement effect.Added CaF2 in this alloy welding wire powder, CaCO3, Na3SiF6, one or more of LiF2, content are 2～5%.The mineral matter that adds can purify weld metal, reduces the impurity content in the deposited metal, improves because the high carbon content of mother metal causes fire check, and further improves the toughness of deposited metal.Also having added content in this welding wire is 0.1～0.5% a small amount of rare earth, and proper amount of rare-earth plays deoxidation, denitrogenation, the purpose of crystal grain thinning.Test shows, adds proper amount of rare-earth and can improve 5～10 joules of impact values.Welding wire of the present invention cooperates suitable welding procedure, can obtain the hardness of HRC48～53, makes deposited metal U-shaped notch shock toughness greater than 40 joules.
The specific embodiment
The present invention uses mild-carbon steel strip, and it is rolled into tubulose, fills impurity and additive thereof in the pipe.Impurity is mineral matter and alloy powder.The percentage by weight that this alloy welding wire powder chemistry is formed is C:0.2～0.4; Mn:1.0～2.0; Si:0.5～1.5; Cr:3.0～6.0; Mo:0.5～2.0; Ni:1.0～3.0; P :≤0.02; S≤0.01; Soldering wire alloy content is 6～12%.Impurity comprises CaF2, CaCO3, one or more mineral matters of Na3SiF6, LiF2, and content is 2～5%; Elements such as vanadium, tungsten, niobium, titanium, aluminium wherein one or more, the content summation is 0.3～2.0%; Wherein also added a small amount of rare earth, content is 0.1～0.5%, and powder is through being pre-mixed evenly, and granularity is 80～160 orders.After adding powder and finishing, welding wire cooperates the HJ107 solder flux, electric current is 300～500 amperes, voltage is 30～35 volts, and speed is 350～600 mm/min, 200～300 ℃ of interlayer temperatures, postheating, through the welding procedure of 560 ℃ of 8 hours temper,, obtain the hardness of HRC48～53 then again through repeatedly drawing.Powder is compacted closely knit in welding wire, and making and using diameter is the welding wire of 2.4～3.2cm.
Claims (5)
1. high-ductility high wear-resistant cold rolling support roller hardfacing alloy welding wire is characterized in that described alloy welding wire chemical composition is percentage by weight:
Surplus is alloy powder and mineral matter.
2. according to the described high-ductility high wear-resistant cold rolling support roller of claim 1 hardfacing alloy welding wire, it is characterized in that: described impurity comprises CaF2, CaCO3, one or more mineral matters of Na3SiF6, LiF2, and content is 2～5%; Elements such as vanadium, tungsten, niobium, titanium, aluminium wherein one or more, the content summation is 0.3～2.0%; Wherein also added a small amount of rare earth, content is 0.1～0.5%.
3. according to the described high-ductility high wear-resistant cold rolling support roller of claim 1 hardfacing alloy welding wire, it is characterized in that: soldering wire alloy content is 6～12%.
4. according to the described high-ductility high wear-resistant cold rolling support roller of claim 1 hardfacing alloy welding wire, it is characterized in that: welding wire cooperates suitable welding procedure, obtains the hardness of HRC48～53.Corresponding welding procedure: cooperate the HJ107 solder flux, 300～500 amperes of welding currents, 30～35 volts of voltages.Speed of welding 350～600 mm/min.200～300 ℃ of interlayer temperatures, postheating.Then through 560 ℃ of 8 hours temper.
5. according to the described high-ductility high wear-resistant cold rolling support roller of claim 1 hardfacing alloy welding wire, it is characterized in that: this welding wire adopts mild-carbon steel strip parcel alloy powder and mineral matter to form through rolling drawing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101235284A CN102240868A (en) | 2011-05-13 | 2011-05-13 | High-tenacity wear-resisting overlaying alloy welding wire for cold-rolling support roller |
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| CN2011101235284A CN102240868A (en) | 2011-05-13 | 2011-05-13 | High-tenacity wear-resisting overlaying alloy welding wire for cold-rolling support roller |
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| CN102240868A true CN102240868A (en) | 2011-11-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737196A (en) * | 2012-10-17 | 2014-04-23 | 沈阳工业大学 | Hardfacing alloy containing silicon and chromium composite ceramic phases and manufacturing process thereof |
| CN103785976A (en) * | 2013-12-13 | 2014-05-14 | 天津大学 | Hot roll surfacing submerged arc flux-cored welding wire and preparation method for same |
| CN104785895A (en) * | 2015-05-05 | 2015-07-22 | 合肥东方节能科技股份有限公司 | Submerged arc surfacing manufacturing technology of looper roll for rolling mill |
| CN106956094A (en) * | 2017-05-31 | 2017-07-18 | 河北工业大学 | A kind of hard-facing alloys material |
| CN110788514A (en) * | 2019-10-28 | 2020-02-14 | 鞍钢股份有限公司 | Submerged arc welding wire steel wire rod for roll build-up welding and manufacturing method thereof |
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| JPS60231591A (en) * | 1984-05-01 | 1985-11-18 | Kobe Steel Ltd | Wire for submerged arc welding of cr-mo group low alloy steel |
| CN101386115A (en) * | 2008-10-13 | 2009-03-18 | 攀钢集团研究院有限公司 | Flux-cored wire for cold rolling middle roller transient layer built-up welding and preparation method thereof |
| CN101391352A (en) * | 2008-10-15 | 2009-03-25 | 攀钢集团研究院有限公司 | Flux-cored wire for repair cold-rolling support roll operational layer and preparation method thereof |
| JP2009255169A (en) * | 2008-03-28 | 2009-11-05 | Nippon Steel Corp | Flux-cored wire for extra-low hydrogen welding, and method for producing the same |
| CN101670501A (en) * | 2009-09-25 | 2010-03-17 | 王新虎 | Iron-based abrasion resistant overlaying-welding flux-cored wire |
-
2011
- 2011-05-13 CN CN2011101235284A patent/CN102240868A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS60231591A (en) * | 1984-05-01 | 1985-11-18 | Kobe Steel Ltd | Wire for submerged arc welding of cr-mo group low alloy steel |
| JP2009255169A (en) * | 2008-03-28 | 2009-11-05 | Nippon Steel Corp | Flux-cored wire for extra-low hydrogen welding, and method for producing the same |
| CN101386115A (en) * | 2008-10-13 | 2009-03-18 | 攀钢集团研究院有限公司 | Flux-cored wire for cold rolling middle roller transient layer built-up welding and preparation method thereof |
| CN101391352A (en) * | 2008-10-15 | 2009-03-25 | 攀钢集团研究院有限公司 | Flux-cored wire for repair cold-rolling support roll operational layer and preparation method thereof |
| CN101670501A (en) * | 2009-09-25 | 2010-03-17 | 王新虎 | Iron-based abrasion resistant overlaying-welding flux-cored wire |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737196A (en) * | 2012-10-17 | 2014-04-23 | 沈阳工业大学 | Hardfacing alloy containing silicon and chromium composite ceramic phases and manufacturing process thereof |
| CN103737196B (en) * | 2012-10-17 | 2015-10-14 | 沈阳工业大学 | A kind of surfacing welding alloy containing Si, Cr composite ceramics phase and preparation technology thereof |
| CN103785976A (en) * | 2013-12-13 | 2014-05-14 | 天津大学 | Hot roll surfacing submerged arc flux-cored welding wire and preparation method for same |
| CN104785895A (en) * | 2015-05-05 | 2015-07-22 | 合肥东方节能科技股份有限公司 | Submerged arc surfacing manufacturing technology of looper roll for rolling mill |
| CN104785895B (en) * | 2015-05-05 | 2017-03-01 | 合肥东方节能科技股份有限公司 | A kind of submerged arc overlay welding manufacturing process of milling train loop back roll |
| CN106956094A (en) * | 2017-05-31 | 2017-07-18 | 河北工业大学 | A kind of hard-facing alloys material |
| CN110788514A (en) * | 2019-10-28 | 2020-02-14 | 鞍钢股份有限公司 | Submerged arc welding wire steel wire rod for roll build-up welding and manufacturing method thereof |
| CN110788514B (en) * | 2019-10-28 | 2021-12-24 | 鞍钢股份有限公司 | Submerged arc solid welding wire steel wire rod for roll build-up welding and manufacturing method thereof |
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Application publication date: 20111116 |