CN1238152C - Build-up welding chemical core wire for repairing cold rolling middle roller transition layer - Google Patents
Build-up welding chemical core wire for repairing cold rolling middle roller transition layer Download PDFInfo
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- CN1238152C CN1238152C CN 02131094 CN02131094A CN1238152C CN 1238152 C CN1238152 C CN 1238152C CN 02131094 CN02131094 CN 02131094 CN 02131094 A CN02131094 A CN 02131094A CN 1238152 C CN1238152 C CN 1238152C
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- welding
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- steel band
- welding wire
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Abstract
The present invention discloses a build-up welding flux-cored welding wire for repairing a transition layer of a cold rolling intermediate roller. A deeply punched cold-rolled steel band with 0.3 to 0.8mm of thickness and 8 to 16mm of width is used as the raw material of skins 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 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 35 to 42 HRc, the impact power is larger than or equal to 174 J, and the crack resistance is high. The technique requirement to the build-up welding of a transition layer when a cold rolled middle roller is repaired 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 transition zone flux-cored wire.This welding wire deposited metal has good cracking resistance, adopt this welding wire on 9Cr3Mo rod material, can guarantee not crack during built-up welding, and can between roller material and built-up welding working lining, form a good hardness transition, for good basis is created in the built-up welding of subsequent working layer.
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: 8.00～15.50 80
Crome metal: 13.6～17.80 80
Metal molybdenum: 3.50～6.55 80
Vanadium iron: 4.65～8.30 60
Metallic nickel: 1.10～3.35 80
Ferrosilicon: 0.50～4.50 60
Rare earth: 1.20～5.50 100
Iron powder: 35.0～55.0 100
Fluorite: 5.0～12.55 60.
The invention has the advantages that manufacture method is simple, the stacking coating metal crack resistance height of welding wire, hardness reaches 35～42HRc, ballistic work 〉=174J, crack resistance is extremely strong during built-up welding on 9Cr3Mo roller material, the transition zone that can guarantee built-up welding does not crack, when reaching cold rolling intermediate calender rolls fully and repairing to the specification requirement of transition zone built-up welding.
The specific embodiment
Example one
Mid-carbon fe-mn: 10.20%
Crome metal: 14.50%
Metal molybdenum: 5.55%
Vanadium iron: 4.65%
Metallic nickel: 1.65%
Ferrosilicon: 3.30%
Rare earth: 2.25%
Iron powder: 52.9%
Fluorite: 5.0%
Welding wire stacking coating metal performance:
Rockwell hardness: 36HRc, ballistic work=186J (impact test piece size: 10 * 5 * 55mm, not gap)
Example two
Mid-carbon fe-mn: 12.25%
Crome metal: 15.50%
Metal molybdenum: 4.50%
Vanadium iron: 6.20%
Metallic nickel: 2.50%
Ferrosilicon: 4.50%
Rare earth: 5.50%
Iron powder: 44.05%
Fluorite: 5.0%
Welding wire stacking coating metal performance:
Rockwell hardness: 41HRc, ballistic work=175J (impact test piece size: 10 * 5 * 55mm, not gap)
Claims (1)
1. repair cold-rolling intermediate calender rolls transition zone 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: 8.00～15.50 80
Crome metal: 13.6～17.80 80
Metal molybdenum: 3.50～6.55 80
Vanadium iron: 4.65～8.30 60
Metallic nickel: 1.10～3.35 80
Ferrosilicon: 0.50～4.50 60
Rare earth: 1.20～5.50 100
Iron powder: 35.0～55.0 100
Fluorite: 5.0～12.55 60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02131094 CN1238152C (en) | 2002-10-09 | 2002-10-09 | Build-up welding chemical core wire for repairing cold rolling middle roller transition layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02131094 CN1238152C (en) | 2002-10-09 | 2002-10-09 | Build-up welding chemical core wire for repairing cold rolling middle roller transition layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1408504A CN1408504A (en) | 2003-04-09 |
| CN1238152C true CN1238152C (en) | 2006-01-25 |
Family
ID=4746564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02131094 Expired - Fee Related CN1238152C (en) | 2002-10-09 | 2002-10-09 | Build-up welding chemical core wire for repairing cold rolling middle roller transition layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1238152C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386115B (en) * | 2008-10-13 | 2011-03-16 | 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 |
Families Citing this family (7)
| 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 |
| CN100553855C (en) * | 2007-05-23 | 2009-10-28 | 山东大学 | A kind of sandwiched alloy powder block used for built-up welding and preparation method thereof and application |
| 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 |
| CN107511477A (en) * | 2017-08-19 | 2017-12-26 | 芜湖鼎瀚再制造技术有限公司 | The build-up welding continuous-casting casting rod and its welding procedure of a kind of steel rolling guide roller |
| CN108907504B (en) * | 2018-09-05 | 2021-03-12 | 南京钢铁股份有限公司 | Metal powder cored flux-cored wire suitable for ultralow-temperature high-manganese steel and welding method |
| 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 |
| 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 |
-
2002
- 2002-10-09 CN CN 02131094 patent/CN1238152C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101386115B (en) * | 2008-10-13 | 2011-03-16 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1408504A (en) | 2003-04-09 |
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