CN100479940C - Technology for repairing semi-steel roller with flux-core welding wire built-up welding - Google Patents
Technology for repairing semi-steel roller with flux-core welding wire built-up welding Download PDFInfo
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- CN100479940C CN100479940C CNB2006100986919A CN200610098691A CN100479940C CN 100479940 C CN100479940 C CN 100479940C CN B2006100986919 A CNB2006100986919 A CN B2006100986919A CN 200610098691 A CN200610098691 A CN 200610098691A CN 100479940 C CN100479940 C CN 100479940C
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- 238000003466 welding Methods 0.000 title claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 16
- 239000010959 steel Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000007704 transition Effects 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229940079593 drug Drugs 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 238000005201 scrubbing Methods 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims 2
- 239000012467 final product Substances 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 5
- 239000004615 ingredient Substances 0.000 abstract 3
- 238000005098 hot rolling Methods 0.000 abstract 1
- 230000008439 repair process Effects 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Abstract
Disclosed is a semi-steel roller on the mill of the domestic hot rolling plate, the surface of the roller can not be used any longer when being frayed by 40mm of diameter, and the traditional welding method can not repair the semi-steel roller. The invention is a technique proposal for repairing the semi-steel roller by surfacing welding of the flux cored wire. The welding process includes three layers; the first layer is a transition layer, the ingredients of the flux cored wire: C is less than 0.1 percent, Mn is 1.4-1.85 percent, and the rest is Fe. The welding thickness is 3mm. The second layer is an intensity layer, the ingredients of the flux cored wire: C is 0.15-0.25 percent, Si is less than 0.8 percent, Mn is 0.8-1.2 percent, Cr is 12-14 percent, Ni is less than one percent, Mo is less than one percent, Nb is less than 0.3 percent, and the rest is Fe. The welding thickness is 10mm, the rigidity HRC is thirty three to forth three. The third layer is a wear resistance layer, the ingredients of the flux cored wire: C is 0.3-0.4 percent, Si is less than 0.8 percent, Mn is 1.2-1.5 percent, Cr is 13-15 percent, Ni is 3.5-4.5 percent, Mo is 1.5-2.5 percent, V is less than one percent, W is less than three percent, and the rest is Fe. The welding thickness is 15mm, the rigidity HRC is forty to fifty. The temperature between layers shall be ensured at about 300DEG C when welding, semi-steel shall be kept in the holding furnace with the temperature of 600DEG C for some time after continuous welding. The service life of the semi-steel welded by the technique can be increased by one to two times, the cost is one third of the original cost, and repeated welding can be executed. The invention has good economic benefits and social benefits.
Description
One, technical field: metallurgical steel rolling.
Two, background technology: the roll material 80% that domestic hot plate mill uses be ferrosteel roll, between the carbon content 1.4%-1.6%, can not re-use behind the rolling face diametric(al) wearing and tearing 40mm generally speaking.Because the carbon content height can't weld, ferrosteel roll becomes steel scrap.If can technology for repairing semi-steel roller, will bring huge economic results in society with a kind of convenience and economic welding procedure.
Three, summary of the invention: the present invention is a kind of technical scheme of medication core welding wire built-up welding technology for repairing semi-steel roller.
Carbon content half steel roller between 1.4%-1.6% is irrealizable with traditional welding side's method, and it is also very high promptly to enable to weld its cost, does not have economic worth.Flux-cored wire is to fill a prescription according to the material of half steel roller.Welding half steel roller generally is divided into three layers and welds:
Ground floor: transition zone by name, flux-cored wire composition C＜0.1%, all the other are Fe for Mn 1.4-1.85%.About throat thickness 3mm.The carbon content of main purpose dilution half steel roller is for next step welding can realize giving security smoothly.
The second layer: intensity layer by name, flux-cored wire composition C 0.15-0.25%, Si＜0.8%, Mn0.8-1.2%, Cr12-14%, Ni＜1%, Mo＜1%, Nb＜0.3, all the other are Fe, throat thickness 10mm.Welding hardness HRC 33-43.Main purpose provides intensity to guarantee.
The 3rd layer: wearing layer by name, flux-cored wire composition C 0.3-0.4%, Si＜0.8%, Mn1.2-1.5%, Cr 13-15%, Ni 3.5-4.5%, Mo 1.5-2.5%, V＜1%, W＜3%, all the other are Fe.Throat thickness 15mm, welding hardness HRC 40-50.
Make the life-span of roll improve 1-2 doubly with this technical scheme welding, welding cost is 1/3 of a former cost, and can repeatedly repeat welding.Have good economic benefits and social benefit.
Four, the specific embodiment
1, material therefor: each layer flux-cored wire, solder flux.
2, device therefor: the submerged arc overlay welding machine, the roll holding furnace,
3, tester: temperature measuring gauge, hardness tester, harmless flaw detector.
The concrete technical process of implementing is: roll that will built-up welding carries out scrubbing and cleans, get on the bus about fatigue layer 5mm at the rolling face for the treatment of built-up welding with lathe, put into 300 ℃ of insulation regular hours of holding furnace, temperature retention time is pressed the H=D/60 formula and is calculated, unit is hour, D is the diameter of welding roll, the mm of unit.Clamping at first is the weldering transition zone in the enterprising windrow weldering of built-up welding machine then, is the intensity layer then, welds wearing layer at last, and continuous welding is finished.Weld interpass temperature (having welded the temperature when rotating to return to weld once more) will be controlled in 300 ℃ of scopes, will carry out online heating when being lower than 300 ℃ of temperature.Put into 600 ℃ of holding furnace insulations after having welded, purpose is to eliminate stress and crystal grain thinning.Temperature retention time is pressed the h=D/10 formula and is calculated, and unit be hour that D is for welding the diameter of roll, the mm of unit.The air cooling of can coming out of the stove when being cooled to below 300 ℃ with stove is worked into then and requires size.
Claims (1)
1, a kind of method of medication core welding wire built-up welding technology for repairing semi-steel roller is characterized in that: welding process is divided into three layers welds, the ground floor transition zone, and flux-cored wire composition C＜0.1%, Mn1.4-1.85%, all the other are Fe, throat thickness 3mm; Second layer intensity layer, flux-cored wire composition C 0.15-0.25%, Si＜0.8%, Mn 0.8-1.2%, Cr 12-14%, Ni＜1%, Mo＜1%, Nb＜0.3, all the other are Fe, throat thickness 10mm, hardness HRC 33-43; The 3rd layer of wearing layer, flux-cored wire composition C 0.3-0.4%, Si＜0.8%, Mn 1.2-1.5%, Cr 13-15%, Ni 3.5-4.5%, Mo 1.5-2.5%, V＜1%, W＜3%, all the other are Fe, throat thickness 15mm, hardness HRC 40-50;
The concrete technical process of implementing is: roll that will built-up welding carries out scrubbing and cleans, get on the bus about fatigue layer 5mm at the rolling face for the treatment of built-up welding with lathe, put into 300 ℃ of insulation regular hours of holding furnace, temperature retention time is pressed the H=D/60 formula and is calculated, unit is hour, D is the diameter of welding roll, the mm of unit; Clamping at first is the weldering transition zone in the enterprising windrow weldering of built-up welding machine then, is the intensity layer then, welds wearing layer at last, and continuous welding is finished; Weld interpass temperature has promptly welded the temperature that one deck rotates when welding down one deck once more and will be controlled at about 300 ℃, put into 600 ℃ of holding furnace insulations after having welded, eliminate stress and crystal grain thinning, temperature retention time is pressed the calculating of h=D/10 formula in the stove, unit is hour, D is the diameter of welding roll, the mm of unit, and the air cooling of coming out of the stove when being cooled to below 300 ℃ with stove gets final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100986919A CN100479940C (en) | 2006-07-14 | 2006-07-14 | Technology for repairing semi-steel roller with flux-core welding wire built-up welding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100986919A CN100479940C (en) | 2006-07-14 | 2006-07-14 | Technology for repairing semi-steel roller with flux-core welding wire built-up welding |
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| Publication Number | Publication Date |
|---|---|
| CN101104180A CN101104180A (en) | 2008-01-16 |
| CN100479940C true CN100479940C (en) | 2009-04-22 |
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| CNB2006100986919A Active CN100479940C (en) | 2006-07-14 | 2006-07-14 | Technology for repairing semi-steel roller with flux-core welding wire built-up welding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744285A (en) * | 2011-04-22 | 2012-10-24 | 攀钢集团钢铁钒钛股份有限公司 | Bending roll of hot coil box and preparation method thereof |
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| CN103212920A (en) * | 2013-03-30 | 2013-07-24 | 首钢总公司 | Welding wire suitable for big hot-rolling back-up roll submerged arc overlaying welding |
| CN103706921B (en) * | 2013-12-23 | 2015-08-12 | 鞍钢实业集团冶金机械有限公司 | Hot-rolling finishing mill backing roll build-up welding repair method |
| CN105081521A (en) * | 2015-08-22 | 2015-11-25 | 湖北万安通复合再制造科技有限公司 | Precise surfacing welding method of high-hardness cold and hot rolls |
| CN105478962B (en) * | 2015-12-16 | 2017-10-31 | 秦皇岛鸿翔焊业有限公司 | The method of large-scale cold rolling backing roll 70Cr3Mo built-up welding reconstruction layer and repaired roller |
| CN105436665B (en) * | 2015-12-16 | 2017-10-31 | 秦皇岛鸿翔焊业有限公司 | The method of large-scale hot-rolling supporting roll Cr4 built-up welding reconstruction layer and repaired roller |
| CN105458479B (en) * | 2016-01-18 | 2018-03-13 | 天津君诚金利管业有限责任公司 | A kind of axle automated, multi-level repair welding equipment |
| CN106670739B (en) * | 2016-12-05 | 2019-02-12 | 安徽兴林机械集团有限公司 | A kind of process of surface treatment of grinding roll overlaying |
| CN106670668A (en) * | 2016-12-05 | 2017-05-17 | 安徽兴林机械集团有限公司 | Surfacing process for anti-corrosion layer of anti-corrosion grinding roller |
| CN106670672A (en) * | 2016-12-05 | 2017-05-17 | 安徽兴林机械集团有限公司 | Low-temperature overlaying technology of pressure-resistant grinding roller |
| CN106695147A (en) * | 2016-12-05 | 2017-05-24 | 安徽兴林机械集团有限公司 | Annealing treatment process for grinding roller overlaying |
| CN106513950A (en) * | 2016-12-05 | 2017-03-22 | 安徽兴林机械集团有限公司 | Grinding roller rotating surfacing process |
| CN114346512B (en) * | 2021-12-29 | 2023-07-28 | 西安理工大学 | Welding wire for alloy steel-stainless steel composite material transition layer and preparation method thereof |
| CN115026456A (en) * | 2022-06-23 | 2022-09-09 | 东北特殊钢集团股份有限公司 | Method for improving roller repair welding quality by adopting new-component welding wire and welding process |
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2006
- 2006-07-14 CN CNB2006100986919A patent/CN100479940C/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744285A (en) * | 2011-04-22 | 2012-10-24 | 攀钢集团钢铁钒钛股份有限公司 | Bending roll of hot coil box and preparation method thereof |
| CN102744285B (en) * | 2011-04-22 | 2014-10-01 | 攀钢集团钒钛资源股份有限公司 | Bending roll of hot coil box and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101104180A (en) | 2008-01-16 |
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Owner name: HEBEI SHOUGANG YANJIAO MACHINERY CO., LTD. Free format text: FORMER NAME: CAPITAL IRON + STEEL GENERAL CO., LTD YANJIAO MACHINERY PLANT |
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Address after: 065200 Langfang city of Hebei province Hanvon Sanhe economic and Technological Development Zone Yanjiao Road No. 302 Patentee after: Hebei Shougang Yanjiao machinery Limited by Share Ltd Address before: 065201 No. 11 Xueyuan Road East Street, Yanjiao Development Zone, Hebei, Sanhe Patentee before: Hebei Shougang Yanjiao Machinery Co., Ltd. |
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Address after: 065200 Langfang city of Hebei province Hanvon Sanhe economic and Technological Development Zone Yanjiao Road No. 302 Patentee after: Hebei first swallow machinery Limited by Share Ltd Address before: 065200 Langfang city of Hebei province Hanvon Sanhe economic and Technological Development Zone Yanjiao Road No. 302 Patentee before: Hebei Shougang Yanjiao machinery Limited by Share Ltd |
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Effective date of registration: 20210127 Address after: 063200 Hebei province Tangshan City Caofeidian District Tang Hai Town West Economic Zone Patentee after: TANGSHAN CAOFEIDIAN DISTR SHOUYAN MACHINERY Co.,Ltd. Address before: No. 302, Hanwang Road, Yanjiao Economic and Technological Development Zone, Sanhe City, Langfang City, Hebei Province 065200 Patentee before: HEBEI SHOUYAN MACHINERY Co.,Ltd. |
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