CN103240539B - A kind of flux-cored wire and application thereof with high-wearing feature - Google Patents
A kind of flux-cored wire and application thereof with high-wearing feature Download PDFInfo
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- CN103240539B CN103240539B CN201310174589.2A CN201310174589A CN103240539B CN 103240539 B CN103240539 B CN 103240539B CN 201310174589 A CN201310174589 A CN 201310174589A CN 103240539 B CN103240539 B CN 103240539B
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- powder
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- cored wire
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- lanthana
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Abstract
The invention discloses a kind of flux-cored wire and the application thereof with high-wearing feature, belong to field of welding material.This flux-cored wire comprises crust and medicine core, and described drug core component and mass percent are: tungsten carbide: 4.9-5.0%; Boron powder: 2.0-2.1%; Vanadium powder: 1.9-2.1%; Manganese powder: 8-10%; Chromium powder: 30-35%; Niobium powder: 1-2%; Cerium oxide: 0.5-1%; Lanthana: 0.8-1.3%; Yittrium oxide; Quartz: 4.0 ~ 4.5%; Magnesia: 2.0 ~ 3.5%; Fluoride: 3.5 ~ 4.0%; Surplus is rutile and carbon dust, and in its Chinese medicine core, the total content of C is 6.0-6.5%.The present invention have splashing less, good stability, slag cover evenly, de-slag easily, the advantage of wearability and good toughness, especially strong shock resistance, is applicable to the welding to wearability and the high cutter of toughness reguirements.
Description
Technical field
The invention belongs to field of welding material, specifically, relate to a kind of flux-cored wire, more particularly, relate to a kind of flux-cored wire and the application thereof with high-wearing feature.
Background technology
Shielding tunnel excavator, be called for short shield machine, a kind of special engineering machinery of tunnel piercing, modern shield excavation machine integrates light, mechanical, electrical, liquid, sensing, information technology, there is excavation cut the soil body, conveying soil quarrel, assembled tunnel-liner, measure the functions such as guiding correction, relate to geology, building, machinery, mechanics, hydraulic pressure, electrically, control, the multi-door subject technology such as measurement, and will carry out manufacturing and designing of " cutting the garment according to the figure " formula according to different geology, reliability requirement is high.Shield excavation machine has been widely used in the Tunnel Engineering such as subway, railway, highway, municipal administration, water power.With shield machine carry out tunnel construction have automaticity high, save that manpower, speed of application are fast, cavitation, weatherproof, excavation time controllably face sedimentation, reduce on the impact of above ground structure and under water excavation time do not affect the features such as water surface traffic,, buried depth longer at tunnel line is larger, with shield machine construction more economical rationality.The history that shield machine comes out existing nearly 180 years so far, it starts from Britain, develops in Japanese, German.The present country that can manufacture shield machine is fewer, in China, only has the minority producers such as China Railway Tunneling Equipment Co., Ltd. to manufacture shield machine at present.The development and apply of shield machine provides strong support to the construction of subway, substantially reduces the construction period of subway, but its defect with high costs is difficult to overcome always.It is exactly cutter as shield machine pioneer army that shield machine consumes one of maximum parts.Cutter head of shield machine cutter not only subjects grit wearing and tearing in work progress, also suffers strong impact.This just requires that hardfacing alloy not only will have high rigidity, also will have good toughness, not easily comes off when intense impact repeatedly.The cost of direct replacing cutter is too high, so carry out reparation to the cutter of impaired shield machine could reduce use cost.
China Patent No.: 200510075283.7, publication date on October 26th, 2005, disclose the patent document that a name is called pile up welding cored electrode for shield tool bit cutting edge, this invention belongs to the welding field in Materials Processing Engineering, and this invention is mainly used in the surfacing manufacturing that subway tunnel excavates shield machine cutter head.It is characterized in that, described drug core component mass percentage: high carbon ferro-chrome: 45 ~ 60%; Crome metal: 5 ~ 15%; Molybdenum-iron: 4 ~ 8%; Manganese metal: 5 ~ 10%; Ferro-niobium: 2 ~ 5%; Ferrotianium: 2 ~ 4%; Vanadium iron: 2 ~ 4%; Wollastonite: 1 ~ 3%; CaF
2: 1 ~ 3%; SiO
2: 2 ~ 5%; ZrO
2: 2 ~ 5%; Feldspar: 2 ~ 5%; TiO:2:5 ~ 10%; Na
2cO
3: 1 ~ 3%; Bi
2o
3: 1 ~ 3%; Na
2siF
6: 1 ~ 3%.This invention after tool wear lost efficacy, can be pulled down and carry out on-the-spot Bead weld repair.But still there is the problem of wearability deficiency, repeatedly repairing affects construction speed.
Summary of the invention
the problem solved
For reparation existence wear no resistance, the life cycle short problem of existing flux-cored wire to shield machine cutter, the invention provides a kind of flux-cored wire and the application thereof with high-wearing feature, it can be used for the Bead weld repair of shield machine cutter, cutter after reparation not only wearability is good, and good toughness, strong shock resistance.
technical scheme
In order to solve the problem, the technical solution adopted in the present invention is as follows:
Have a flux-cored wire for high-wearing feature, comprise crust and medicine core, described drug core component and mass percent are: tungsten carbide: 4.9-5.0%; Boron powder: 2.0-2.1%; Vanadium powder: 1.9-2.1%; Manganese powder: 8-10%; Chromium powder: 30-35%; Niobium powder: 1-2%; Cerium oxide: 0.5-1%; Lanthana: 0.8-1.3%; Yittrium oxide: its content is determined according to the content of cerium oxide and lanthana, the mass percent summation of yittrium oxide, cerium oxide and lanthana is less than or equal to 2.3%; Quartz: 4.0 ~ 4.5%; Magnesia: 2.0 ~ 3.5%; Fluoride: 3.5 ~ 4.0%; Surplus is rutile and carbon dust, and in its Chinese medicine core, the total content of C is 6.0-6.5%.
Preferably, described crust is stainless steel.
Preferably, described drug core component and mass percent are: tungsten carbide: 5.0%; Boron powder: 2.0%; Vanadium powder: 2.0%; Manganese powder: 9%; Chromium powder: 32%; Niobium powder: 1.5%; Cerium oxide: 0.5%; Lanthana: 1.1%; Yittrium oxide: 0.7%; Quartz: 4.2%; Magnesia: 3.5%; Fluoride: 3.8%; Surplus is rutile and carbon dust, and in its Chinese medicine core, the total content of C is 6.2%.
Preferably, described fluoride is calcirm-fluoride.
A kind of application of flux-cored wire when shield machine blade weld deposit repairing with high-wearing feature.Welding shield machine blade have splashing less, good stability, slag cover the advantages such as all even de-slag is easy, it is few that the cutter after welding has defect, and weld seam is specious, the feature of wearability and good toughness.
The present invention by adding WC, improving C content, control Cr content, Mn content and utilizing the Grain refinement of B element and V element, thus improves the wearability of deposited metal.Known the improving constantly along with C content of those of ordinary skill, that organizes is hypereutectic more and more obvious, the increasing number of carbide, make macrohardness all very high, but due to the rising along with C content, its toughness also can reduce greatly, so C content is controlled lower in common flux-cored wire.The present invention breaks through conventional technology restriction, make the total content of C in medicine core be 6.0-6.5%, its wearability improves greatly, simultaneously in order to prevent the reduction of toughness, by adding the content also reasonably limiting yittrium oxide, cerium oxide and lanthana, and then avoid the reduction of toughness.Seam organization of the present invention is martensite+net carbide+massive carbide+a small amount of retained austenite, and these carbide are Cr
7c
3type carbide, has the advantages that quantity is many, be evenly distributed.Manganese in the present invention and chromium mainly improve crystal structure, improve intensity, strengthen wearability.Niobium in the present invention is transition elements, plays pinning effect to different tissues.The cutter of the present invention's welding has good Abrasive Resistance of Stubble-cleaning, especially has excellent anti-crushing stone impact property, is applicable to the built-up welding of shield machine blade.
beneficial effect
Compared to prior art, beneficial effect of the present invention is:
The present invention breaks through existing mentality of designing, have employed the technical scheme that C content is high, by adding WC, control Cr content, Mn content and utilizing the Grain refinement of B element and V element, thus improves the wearability of deposited metal.The present invention have splashing less, good stability, slag cover evenly, de-slag easily, the advantage of wearability and good toughness, especially strong shock resistance, is applicable to the welding to wearability and the high cutter of toughness reguirements.
Detailed description of the invention
Describe the present invention below in conjunction with specific embodiment.
embodiment 1
Have a flux-cored wire for high-wearing feature, comprise crust and medicine core, crust is stainless steel.Drug core component and mass percent are: tungsten carbide: 5.0%; Boron powder: 2.0%; Vanadium powder: 2.0%; Manganese powder: 9%; Chromium powder: 32%; Niobium powder: 1.5%; Cerium oxide: 0.5%; Lanthana: 1.1%; Yittrium oxide: 0.7%; Quartz: 4.2%; Magnesia: 3.5%; Calcirm-fluoride: 3.8%; Surplus is rutile and carbon dust, and in its Chinese medicine core, the total content of C is 6.2%.
The flux-cored wire that this kind has high-wearing feature is applied in shield machine blade weld deposit repairing.Heap postwelding surfacing layer is mainly martensite+net carbide+massive carbide+a small amount of retained austenite, and hardness is higher, and wearability is better.Have during welding shield machine blade splashing less, good stability, slag cover the advantages such as all even de-slag is easy, it is few that cutter after welding has defect, weld seam is specious, the feature of wearability and good toughness, especially have the ability of the multiple intense impact of stronger anti-reflective, the shield machine blade life of each heap postwelding enhances 30% relative to the life-span of the blade of common drug core welding wire built-up welding.
embodiment 2
Have a flux-cored wire for high-wearing feature, comprise crust and medicine core, crust is stainless steel.Drug core component and mass percent are: tungsten carbide: 4.9%; Boron powder: 2.1%; Vanadium powder: 1.9%; Manganese powder: 10%; Chromium powder: 30%; Niobium powder: 2%; Cerium oxide: 1%; Lanthana: 0.8%; Yittrium oxide 0.2%; Quartz: 4.5%; Magnesia: 2.0%; Calcirm-fluoride: 3.5%; Surplus is rutile and carbon dust, and in its Chinese medicine core, the total content of C is 6.0%.
Flux-cored wire that this is a kind of has a high-wearing feature have when welding shield machine blade splashing less, good stability, slag cover the advantages such as all even de-slag is easy, it is few that the cutter after welding has defect, and weld seam is specious, the feature of wearability and good toughness.
embodiment 3
Have a flux-cored wire for high-wearing feature, comprise crust and medicine core, crust is stainless steel.Drug core component and mass percent are: tungsten carbide: 5.0%; Boron powder: 2.0%; Vanadium powder: 2.1%; Manganese powder: 8%; Chromium powder: 35%; Niobium powder: 1%; Cerium oxide: 0.8%; Lanthana: 1.3%; Yittrium oxide 0.2%; Quartz: 4.0%; Magnesia: 3.1%; Calcirm-fluoride: 4.0%; Surplus is rutile and carbon dust, and in its Chinese medicine core, the total content of C is 6.5%.
Flux-cored wire that this is a kind of has a high-wearing feature have when welding shield machine blade splashing less, good stability, slag cover the advantages such as all even de-slag is easy, it is few that the cutter after welding has defect, and weld seam is specious, the feature of wearability and good toughness.
embodiment 4
Have a flux-cored wire for high-wearing feature, comprise crust and medicine core, crust is stainless steel.Drug core component and mass percent are: tungsten carbide: 4.95%; Boron powder: 2.05%; Vanadium powder: 2.1%; Manganese powder: 9%; Chromium powder: 33%; Niobium powder: 1.8%; Cerium oxide: 0.9%; Lanthana: 1.3%; Quartz: 4.2%; Magnesia: 3.3%; Calcirm-fluoride: 3.7%; Surplus is rutile and carbon dust, and in its Chinese medicine core, the total content of C is 6.2%.
The present invention breaks through conventional technology restriction, make the total content of C in medicine core be 6.2% in the present embodiment, its wearability improves greatly, simultaneously in order to prevent the reduction of toughness, by adding and the rational content limiting cerium oxide and lanthana, and then avoid the reduction of toughness.Seam organization of the present invention is martensite+net carbide+massive carbide+a small amount of retained austenite, and these carbide are Cr
7c
3type carbide, has the advantages that quantity is many, be evenly distributed.The cutter of the present invention's welding has good Abrasive Resistance of Stubble-cleaning, especially has excellent anti-crushing stone impact property, is applicable to the built-up welding of shield machine blade.
Claims (5)
1. there is a flux-cored wire for high-wearing feature, comprise crust and medicine core, it is characterized in that: described drug core component and mass percent are: tungsten carbide: 4.9-5.0%; Boron powder: 2.0-2.1%; Vanadium powder: 1.9-2.1%; Manganese powder: 8-10%; Chromium powder: 30-35%; Niobium powder: 1-2%; Cerium oxide: 0.5-1%; Lanthana: 0.8-1.3%; Yittrium oxide: its content is determined according to the content of cerium oxide and lanthana, the mass percent summation of yittrium oxide, cerium oxide and lanthana is less than or equal to 2.3%; Quartz: 4.0 ~ 4.5%; Magnesia: 2.0 ~ 3.5%; Fluoride: 3.5 ~ 4.0%; Surplus is rutile and carbon dust, and in its Chinese medicine core, the total content of C is 6.0-6.5%.
2. a kind of flux-cored wire with high-wearing feature according to claim 1, is characterized in that: described crust is stainless steel.
3. a kind of flux-cored wire with high-wearing feature according to claim 1, is characterized in that: described drug core component and mass percent are: tungsten carbide: 5.0%; Boron powder: 2.0%; Vanadium powder: 2.0%; Manganese powder: 9%; Chromium powder: 32%; Niobium powder: 1.5%; Cerium oxide: 0.5%; Lanthana: 1.1%; Yittrium oxide: 0.7%; Quartz: 4.2%; Magnesia: 3.5%; Fluoride: 3.8%; Surplus is rutile and carbon dust, and in its Chinese medicine core, the total content of C is 6.2%.
4. a kind of flux-cored wire with high-wearing feature according to claim 1 or 2 or 3, is characterized in that: described fluoride is calcirm-fluoride.
5. a kind of application of flux-cored wire when shield machine blade weld deposit repairing with high-wearing feature described in claim 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310174589.2A CN103240539B (en) | 2013-05-13 | 2013-05-13 | A kind of flux-cored wire and application thereof with high-wearing feature |
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|---|---|---|---|
| CN201310174589.2A CN103240539B (en) | 2013-05-13 | 2013-05-13 | A kind of flux-cored wire and application thereof with high-wearing feature |
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| CN103240539A CN103240539A (en) | 2013-08-14 |
| CN103240539B true CN103240539B (en) | 2015-09-09 |
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| CN201310174589.2A Expired - Fee Related CN103240539B (en) | 2013-05-13 | 2013-05-13 | A kind of flux-cored wire and application thereof with high-wearing feature |
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| CN104384745B (en) * | 2014-09-26 | 2016-08-24 | 中冶建筑研究总院有限公司 | A kind of high titanium height niobium submerged-arc overlaying welding flux-cored wire and preparation method thereof |
| CN107186381A (en) * | 2017-05-17 | 2017-09-22 | 安徽飞弧焊业股份有限公司 | A kind of cement bin material liner plate flux-cored wire |
| CN107297584A (en) * | 2017-05-17 | 2017-10-27 | 安徽飞弧焊业股份有限公司 | A kind of wear-resistant anti-loose falls flux-cored wire |
| CN107335942B (en) * | 2017-07-12 | 2019-09-27 | 西安理工大学 | PH13-8Mo stainless steel Self-protecting welding wire and preparation method thereof |
| CN108356439B (en) * | 2018-05-14 | 2020-11-06 | 北京智双科技发展有限公司 | High-hardness high-wear-resistance impact-resistant drill pipe repairing flux-cored wire |
| CN109014654B (en) * | 2018-07-16 | 2020-12-11 | 中冶建筑研究总院有限公司 | Submerged arc surfacing flux-cored wire for composite (re) manufacturing continuous casting roller and process |
| CN109048120B (en) * | 2018-09-11 | 2020-09-18 | 江苏思迪彼特新材料科技有限公司 | High-strength high-wear-resistance stainless steel overlaying flux-cored welding wire and application thereof |
| CN109967913B (en) * | 2019-01-17 | 2021-06-04 | 北京奥邦新材料有限公司 | Flux-cored wire for laser cladding of continuous casting roller and production method thereof |
| CN109940310A (en) * | 2019-03-27 | 2019-06-28 | 江苏能建机电实业集团有限公司 | Boiler build-up welding alloy material |
| CN110026708B (en) * | 2019-05-16 | 2021-06-11 | 江苏师范大学 | Welding method of dual-phase steel |
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|---|---|---|---|---|
| CN1170651A (en) * | 1996-07-15 | 1998-01-21 | 潘国嶍 | High hardness wear resisting welding wire with flux core |
| CN1686661A (en) * | 2005-06-10 | 2005-10-26 | 北京工业大学 | Pile up welding cored electrode for shield tool bit cutting edge |
| CN101190481A (en) * | 2006-11-27 | 2008-06-04 | 攀枝花学院 | Deposit welding rod containing rare earth and production method |
| CN101450426A (en) * | 2008-12-31 | 2009-06-10 | 宁波隆兴焊割科技股份有限公司 | Low-temperature steel flux-cored wire |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2631222B2 (en) * | 1988-02-02 | 1997-07-16 | 新日本製鐵株式会社 | Hardfacing arc welding |
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2013
- 2013-05-13 CN CN201310174589.2A patent/CN103240539B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170651A (en) * | 1996-07-15 | 1998-01-21 | 潘国嶍 | High hardness wear resisting welding wire with flux core |
| CN1686661A (en) * | 2005-06-10 | 2005-10-26 | 北京工业大学 | Pile up welding cored electrode for shield tool bit cutting edge |
| CN101190481A (en) * | 2006-11-27 | 2008-06-04 | 攀枝花学院 | Deposit welding rod containing rare earth and production method |
| CN101450426A (en) * | 2008-12-31 | 2009-06-10 | 宁波隆兴焊割科技股份有限公司 | Low-temperature steel flux-cored wire |
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| CN103240539A (en) | 2013-08-14 |
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