CN1238151C - Repairing cold-rolled intermediat roll working lining build-up welding agent core welding stick - Google Patents
Repairing cold-rolled intermediat roll working lining build-up welding agent core welding stick Download PDFInfo
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- CN1238151C CN1238151C CN 02131093 CN02131093A CN1238151C CN 1238151 C CN1238151 C CN 1238151C CN 02131093 CN02131093 CN 02131093 CN 02131093 A CN02131093 A CN 02131093A CN 1238151 C CN1238151 C CN 1238151C
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- rolled
- welding
- flux
- steel band
- welding wire
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Abstract
The present invention discloses a build-up welding flux-cored welding wire for repairing a working layer of a cold rolling intermediate roller. A deeply punched cold-rolled steel band of which the thickness is from 0.3 to 0.8mm and the width is from 8 to 16mm is used as the raw material of the skin of the welding wire. Metal powder and iron alloy are used as main flux-cored soldering fluid. The steel band is rolled into a U shape by cutting, getting rid of oil and drying the flux-cored proportioning material, and the soldering fluid is filled in the U-shaped slot. The steel band is rolled into an O shape and then pulled into a flux-cored welding wire of which the diameter is from 2.0 to 4.0mm. The present invention is characterized by the component, the dimension and the content of the medicine core. The present invention has the advantages that the manufacturing method is simple; the hardness of the accumulated metal of the welding wire reaches 55 to 59 HRc, the impact power is larger than or equal to 40 J, and the crack resistance is high. The technique requirement to the build-up welding of the cold rolling intermediate roller can be achieved completely.
Description
Technical field
The invention belongs to welding material, more precisely belong to the flux-cored wire material that the repair cold-rolling intermediate calender rolls uses.
Background technology
Therefore cold rolling intermediate calender rolls is the critical component in the cold-rolled steel sheet device, bears huge high speed alternation pressure during work, requires the body of roll to have hardness up to 56～59HRc, also requires to have the ability of very high wearability and antifatigue pull out type fracture simultaneously.For this reason, manufacturer adopts 9Cr3Mo high-carbon chrome-moly steel, forms the manufacturing cost costliness through forging and the manufacturing of complicated heat treatment process.Yet the waste of annual cold rolling intermediate calender rolls is huge, scraps because of not repairing again afterwards, and this causes great economic loss for China's metallurgy industry.
Reparation to cold rolling intermediate calender rolls mainly is to adopt overlaying process at present.The step of this method comprises weld preheating, built-up welding and the post weld heat treatment process of the body of roll.Wherein built-up welding comprises the built-up welding of transition zone and working lining again.Employed resurfacing welding material is the key technology in decision surfacing layer metal performance and roll service life in this operation.
Summary of the invention
The object of the present invention is to provide a kind of repair cold-rolling intermediate calender rolls working lining flux-cored wire.The hardness of this welding wire deposited metal reaches 55～59HRc, ballistic work 〉=40J.Thereby have very strong wearability, crack resistance and an antifatigue destructive characteristics.
For achieving the above object, the present invention is realized by following technical proposals.With thickness is that 0.3～0.8mm, width are that the deep draw cold-rolled strip of 8.0～16.0mm is the crust raw material of welding wire, with metal powder and ferroalloy as main medicine core welding agent, cut out band, the oven dry of deoiling, the oven dry of medicine core batching through steel band, steel band is rolled into " U " type and filling welding agent in " U " type groove, again steel band is rolled into " O " type, is drawn into the flux-cored wire that diameter is 2.0～4.0mm then.The composition, specification and the content that it is characterized in that the medicine core are:
Medicine core component content (wt%) granularity (order)
Mid-carbon fe-mn: 6.12～18.56 80
Crome metal: 5.56～12.50 80
High carbon ferro-chrome: 7.85～19.23 60
Metal molybdenum: 4.50～15.55 80
Vanadium iron: 2.65～8.80 60
Ferrosilicon: 0.00～4.50 60
Ferrotungsten: 0.50～6.62 60
Rare earth: 1.20～8.65 100
Iron powder: 15.0～30.50 100
Fluorite: 5.0～12.55 60
Magnesia: 4.55～14.00 60.
The invention has the advantages that manufacture method is simple, the stacking coating metal function admirable of welding wire reaches the technique for overlaying requirement of cold rolling intermediate calender rolls fully.
The specific embodiment
Example one
Mid-carbon fe-mn: 8.42%
Crome metal: 12.50%
High carbon ferro-chrome: 15.34%
Metal molybdenum: 6.21%
Vanadium iron: 6.72%
Ferrosilicon: 4.50%
Ferrotungsten: 5.52%
Rare earth: 3.25%
Iron powder: 28.04%
Fluorite: 5.0%
Magnesia: 4.50%
Welding wire stacking coating metal performance:
Rockwell hardness: 56HRc, impact toughness=48 (impact test piece size: 10 * 5 * 55mm, not gap)
Example two
Mid-carbon fe-mn: 8.42%
Crome metal: 12.50%
High carbon ferro-chrome: 18.56%
Metal molybdenum: 7.80%
Vanadium iron: 6.72%
Ferrosilicon: 4.50%
Ferrotungsten: 6.52%
Rare earth: 5.50%
Iron powder: 19.98%
Fluorite: 5.0%
Magnesia: 4.50%
Welding wire stacking coating metal performance:
Rockwell hardness: 58HRc, impact toughness=43 (impact test piece size: 10 * 5 * 55mm, not gap)
Claims (1)
1. repair cold-rolling intermediate calender rolls working lining flux-cored wire, this welding wire is that 0.3～0.8mm, width are that the deep draw cold-rolled strip of 8.0～16.0mm is the crust raw material of welding wire with thickness, with metal powder and ferroalloy as main medicine core welding agent, cut out band, the oven dry of deoiling, the oven dry of medicine core batching through steel band, steel band is rolled into " U " type and filling welding agent in " U " type groove, again steel band is rolled into " O " type, be drawn into the flux-cored wire that diameter is 2.0～4.0mm then, it is characterized in that composition, specification and the content of medicine core is:
Medicine core component content (wt%) granularity (order)
Mid-carbon fe-mn: 6.12～18.56 80
Crome metal: 5.56～12.50 80
High carbon ferro-chrome: 7.85～19.23 60
Metal molybdenum: 4.50～15.55 80
Vanadium iron: 2.65～8.80 60
Ferrosilicon: 0.00～4.50 60
Ferrotungsten: 0.50～6.62 60
Rare earth: 1.20～8.65 100
Iron powder: 15.0～30.50 100
Fluorite: 5.0～12.55 60
Magnesia: 4.55～14.00 60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02131093 CN1238151C (en) | 2002-10-09 | 2002-10-09 | Repairing cold-rolled intermediat roll working lining build-up welding agent core welding stick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02131093 CN1238151C (en) | 2002-10-09 | 2002-10-09 | Repairing cold-rolled intermediat roll working lining build-up welding agent core welding stick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1413793A CN1413793A (en) | 2003-04-30 |
| CN1238151C true CN1238151C (en) | 2006-01-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02131093 Expired - Fee Related CN1238151C (en) | 2002-10-09 | 2002-10-09 | Repairing cold-rolled intermediat roll working lining build-up welding agent core welding stick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1238151C (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339178C (en) * | 2005-07-08 | 2007-09-26 | 湘潭大学 | High chromium cast iron self protective build-up welding cored welding wire and its usage |
| CN101434017B (en) * | 2007-11-14 | 2010-11-03 | 中冶集团建筑研究总院 | Welding wire for welding cold-rolled steel strip strain roll |
| CN100496865C (en) * | 2007-12-17 | 2009-06-10 | 徐龙江 | High-wearing high performance-cost ratio flux-cored wire |
| CN101804530B (en) * | 2010-05-07 | 2011-08-24 | 邯郸市永固冶金备件有限公司 | Special flux-cored wire for surfacing repair of BD roller |
| CN101837522B (en) * | 2010-06-11 | 2013-06-19 | 河海大学常州校区 | Vanadium-reinforced wear-resistant submerged-arc surfacing flux-cored welding wire |
| CN101954555A (en) * | 2010-10-19 | 2011-01-26 | 山东科技大学 | Method for manufacturing and using wear-resistant surfacing welding electrode |
| CN102528323B (en) * | 2012-01-18 | 2014-05-14 | 上海金刚冶金材料有限公司 | Alloy pipe wire produced by prefabricated alloy powder for overlaying welding of support roller and manufacture method of alloy pipe wire |
| CN102528324B (en) * | 2012-01-18 | 2014-04-09 | 上海金刚冶金材料有限公司 | Method for preparing alloy powder for manufacturing tubular welding wire |
| CN102764941B (en) * | 2012-07-03 | 2014-11-26 | 宁波隆兴焊割科技股份有限公司 | Carbon dioxide gas shielded welding flux-cored wire |
| CN103418923B (en) * | 2013-08-30 | 2015-06-17 | 北京工业大学 | Overlaying repair method for worn roller |
| CN106425156B (en) * | 2016-07-14 | 2019-09-24 | 宁波诺迈特新材料科技有限公司 | Flux-cored wire and application thereof, deposited metal and coating |
| CN106141505B (en) * | 2016-08-05 | 2019-04-30 | 天长市通联焊业有限公司 | A kind of high flux-cored wire of good toughness hardness |
| CN106862800A (en) * | 2017-03-31 | 2017-06-20 | 安徽再制造工程设计中心有限公司 | The built-up welding of steel pipe forming roller, flux cored wire used for submerged arc welding and its welding procedure |
| CN109249152B (en) * | 2018-09-06 | 2021-04-30 | 四川大西洋焊接材料股份有限公司 | Special hard surfacing welding wire for mandrel for rolling seamless steel tube and preparation method |
| CN109434320A (en) * | 2018-11-27 | 2019-03-08 | 安徽泰尔表面工程技术有限公司 | A kind of wear-resisting welding wire with flux core and the method that part is repaired using it |
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2002
- 2002-10-09 CN CN 02131093 patent/CN1238151C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1413793A (en) | 2003-04-30 |
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