CN108526752A - One kind is paddled welding self-protection flux-cored wire under environment - Google Patents
One kind is paddled welding self-protection flux-cored wire under environment Download PDFInfo
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- CN108526752A CN108526752A CN201810429582.3A CN201810429582A CN108526752A CN 108526752 A CN108526752 A CN 108526752A CN 201810429582 A CN201810429582 A CN 201810429582A CN 108526752 A CN108526752 A CN 108526752A
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- welding
- under environment
- cored wire
- powder
- paddled
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3608—Titania or titanates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
It paddles welding self-protection flux-cored wire under environment the invention discloses one kind, including metal sheath and medicine core, the component and mass percent of medicine core are：Rutile 35 55%, iron oxide 10 20%, aluminium oxide 5 12%, calcium carbonate 5 10%, fluoride 3 8%, titanium valve 2 5%, nickel powder 4 8%, molybdenum powder 1 2%, iron powder 15 25%.The welding that flux-cored wire disclosed in this invention can be used for paddling under environment, easy starting the arc when welding, arc burning is stablized, with splendid welding technological properties, gained appearance of weld is beautiful, and postwelding deposited metal tensile strength is more than 540MPa, and flawless occurs when 4 times of banjo fixing butt jointing, 180 ° of plate thickness clod wash angle, with good impact flexibility, meet the welding of middle low carbon steel and low-alloy high-strength steel under environment of paddling.
Description
Technical field
The invention belongs to technical field of welding materials, and in particular to one kind is paddled welding self-shield fluxed-cored welding under environment
Silk.
Background technology
Automatic welding due to having the advantages that production efficiency is high, welding quality is good, labor intensity is low etc., in engineering machinery and
The industries such as petrochemical industry are used widely.It is automatic under some particular surroundings with the raising of China's automatic welding level
It is also more and more to change welding demand, such as weldment surface moisture, band water, or the welding under the environment that rains, is referred to as relating to
Welding under water environment.When welding in such a case, it usually needs workpiece is dried, until workpiece surface does not have moisture
In the case of carry out welding again, but its complicated pre-welding treatment greatly reduces the welding efficiency under environment of paddling.In addition, also
Workpiece cannot be carried out welding preceding drying and processing by having under more particular surroundings, such as the weldering of emergency maintenance nearby of hull, ship lock water line
It connects, welding for steel structure etc. near offshore platform horizontal plane.Welding difficulty is very big in these cases, and welding quality is difficult to protect
Card, there are military service security risks.
Welding material used in automatic welding is welding wire, including solid core welding wire and flux-cored wire, wherein flux-cored wire have both
Gas shield solid core welding wire, the high efficiency of welding wire for submerged-arc welding, automation and it is wide in variety, that adaptation is wide, welding technological properties is good etc. is more
The advantages of aspect, is widely used.But the underwater wet welding that presently commercially available land flux-cored wire used for welding is more with development
It is not suitable for the direct welding paddled under environment with flux-cored wire.Main cause is：(1) it is carried out when using land flux-cored wire
It paddles when welding under environment, the water of workpiece surface is thermally decomposed, and causes the hydrogen concentration being dissolved into weld seam molten bath high, welding point
In easily generate hydrogen blistering and hydrogen cooling crack, influence joint performance；(2) in order to welding region when underwater automatic welding
Electric arc forms protection, while ensureing that electric arc stablizes burning under the action of hydraulic pressure, and underwater wet welding is added in flux-cored wire
More gas making element and stabilising arc element.When being welded under the environment that carried out with flux-cored wire paddling using underwater wet welding,
Flue dust and gas generation are more, and a large amount of stomata is also easy to produce in weld seam, influences joint performance.Therefore, it develops and is welded under environment of paddling
Special self-protection flux-cored wire is connect, can be welded directly band water in the case where not drying and not outer plus protective gas, this is to drop
Welding procedure difficulty under low environment of paddling improves and paddles welding efficiency under environment and welding quality is of great significance.
Invention content
In order to solve the above technical problems, paddle welding self-protection flux-cored wire under environment the present invention provides one kind, with
Reach that arcing is stable, welding usability is good, work efficiency is high, suitable for welding the purpose used under environment of paddling.
In order to achieve the above objectives, technical scheme is as follows：
One kind is paddled welding self-protection flux-cored wire under environment, including metal sheath and medicine core, and metal sheath is by low-carbon
Steel steel band is rolled into, and the component and mass percent of medicine core are：Rutile 35-55%, iron oxide 10-20%, aluminium oxide 5-12%,
Calcium carbonate 5-10%, fluoride 3-8%, titanium valve 2-5%, nickel powder 4-8%, molybdenum powder 1-2%, iron powder 15-25%.
In said program, the metal sheath is rolled by mild steel steel band.
In said program, fluoride CaF2, LiF and NaF threes combination, mass percent CaF250-70%,
LiF15-30%, NaF 15-30%.
In said program, the filling rate of medicine core is 22-32%.
Through the above technical solutions, welding self-protection flux-cored wire is in view of paddling under environment provided by the invention of paddling
Weld characteristics under environment, in order to obtain the welding point of function admirable under the environment that ensures to paddle, the present invention matches internal medicine core
Side is designed, by the way that arc stabilizer is added in medicine core come stablizing for electric arc is burnt when welding under the environment that ensures to paddle；By adding
Enter gas making ingredient, when welding generates gas and plays a protective role to electric arc, molten drop and molten pool metal；By the way that dehydrogenation agent, drop is added
Diffusible hydrogen content in low weld seam, prevents hydrogen induced cracking from generating；Alloying element is added, improves seam organization, improves weld metal
Mechanical property.
In the chemical composition of above-mentioned medicinal powder, the mechanism of action of each component is as follows：
Rutile, it primarily serves fluxing effect, in addition also has certain stabilising arc effect, ensures welding technological properties.
When rutile content is too low, the mobility of slag is poor, and therefore, slag molding is bad, easily glutinous slag.But work as its too high levels
When, weld joint mechanical performance can be caused to decline.Therefore, the mass percent that rutile is added in the present invention is 35-55%.
Iron oxide primarily serves fluxing effect, reduces the viscosity and surface tension of slag, increases arc energy, makes molten bath
Molten wide and fusion penetration increase.In addition, it or surface reactive material, improve welding technological properties.Iron oxide is in the welding process
It can also decompose, generate free state oxygen, react with the hydrogen in molten bath, hydrogen content can be effectively reduced, it can also be with weld seam gold
Harmful element in category reacts, and reduces inclusion content and size in deposited metal, promotes acicular ferrite in weld seam
Generation, improve the impact flexibility of weld metal.When iron oxide content is too low, arc energy is insufficient, and molten bath is shallow and narrow, easily glutinous
Slag, welding usability are poor.But when iron oxide is added it is excessive when, arc energy is excessive, and splashing increases, and causes to be molded poor, is not easy
De- slag.Therefore, the mass percent that iron oxide is added in the present invention is 10-20%.
Aluminium oxide is adjusted the physical property of slag, improves the removability of slag of slag.When alumina content is more than 4, can obtain
Obtain good welding wire welding technological properties and deposited metal mechanical property.But alumina content is excessively high, can lead to the fusing point of slag
It significantly increases, medicine core fusing lag cannot play the role of protecting molten drop, in addition, also easily causing weld metal slag inclusion when solidification
Defect.Therefore, the mass percent that aluminium oxide is added in the present invention is 5-12%.
Calcium carbonate, it is main to play gas making, protect welding arc and molten bath.When calcium carbonate content is relatively low, coating is made
Slag and gas making scarce capacity, it is inadequate to the protective effect of weld seam, lead to mechanical properties decrease；But when calcium carbonate addition is too big
When, gas making is excessive, and when welding is also easy to produce larger splashing, and arc stability is deteriorated.Therefore, calcium carbonate addition in the present invention
Mass percent is 5-10%.
Fluoride, with CaF2Based on, LiF and NaF are added, the mass percent of three is CaF250-70%, LiF
15-30%, NaF15-30%.Fluoride primarily serves slag making and gas making effect.It paddles when welding under environment, the water of workpiece surface
It is thermally decomposed, causes the hydrogen concentration being dissolved into weld seam molten bath very high, hydrogen blistering and hydrogen cooling crack are easily generated in weld seam.Fluorine
Compound is a kind of dehydrogenated material of dehydrogenation excellent.CaF2Slag making, shoddye effect are also acted as, the viscosity of slag is adjusted.LiF and
NaF decomposition also will produce Li and Na has stabilising arc effect for alkali metal, can improve the arc stability under environment of paddling.Work as fluoride
When addition is too low, gas making, slag making are insufficient, and stomata is also easy to produce in weld seam and face of weld slag covers not congruent problem.Work as fluorine
When compound addition is excessive, viscosity coefficient of dross is lower, and slag trickling is serious when welding, cannot play a very good protection.So
The mass percent that fluoride is added in the present invention is 3-8%.
Titanium valve, primarily serving reduces weld seam diffusible hydrogen content, improves seam organization, improves the effect of joint toughness.Titanium is
The titanium carbide of carbide, formation catches Hydrogen Energy power with very strong.In addition, titanium is also easily anti-with nitrogen, the oxygen in molten bath
Tiny titanium oxide, titanium nitride particles should be generated, these particles are alternatively arranged as heterogeneous shape while capturing hydrogen as hydrogen trap
Nuclear particle promotes acicular ferrite nucleating, improves seam organization, and crystal grain thinning plays the role of improving joint toughness.The present invention
The mass percent that middle titanium is added is 2-5%.
Nickel powder and molybdenum powder can promote weld metal alloying, improve weld structure and mechanical properties.But molybdenum element is improving
There is certain harmful effect while intensity to low-temperature flexibility, crack resistance.So the quality that nickel powder and molybdenum powder are added in the present invention
Percentage is 4-8% and 1-2% respectively.
Iron powder mainly plays modifying ingredients, ensures arc stability and improves the effect of deposition efficiency.Iron powder adds in the present invention
The mass percent entered is 15-25%.
Flux-cored wire is made using conventional flux-cored wire technology of preparing.
One kind proposed by the present invention paddle welding self-protection flux-cored wire under environment the characteristics of and advantage be：It paddles ring
The starting the arc is easy when being welded under border, and arc burning is stablized, no blow-out current interruption phenomenon, has splendid welding technological properties, gained weldering
It is seamed into shape beauty, postwelding deposited metal tensile strength is more than 540MPa, flawless when 4 times of banjo fixing butt jointing, 180 ° of plate thickness clod wash angle
Occur, there is good impact flexibility, meet the welding of middle low carbon steel and low-alloy high-strength steel under environment of paddling.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below.
Embodiment one：The composition and weight percent of medicinal powder be：Rutile 37%, iron oxide 18%, aluminium oxide 6%, carbon
Sour calcium 8%, fluoride 4%, titanium valve 2%, nickel powder 6%, molybdenum powder 1%, iron powder 18%.
Embodiment two：The composition and weight percent of medicinal powder be：Rutile 44%, iron oxide 12%, aluminium oxide 8%, carbon
Sour calcium 6%, fluoride 6%, titanium valve 3%, nickel powder 4%, molybdenum powder 1.5%, iron powder 15.5%.
Embodiment three：The composition and weight percent of medicinal powder be：Rutile 48%, iron oxide 10%, aluminium oxide 5, carbonic acid
Calcium 7, fluoride 5, titanium valve 4%, nickel powder 8%, molybdenum powder 2%, iron powder 11%.
The composition content for adjusting medicine core powder according to the above ratio, prepares medicine core powder, prepares the medicine core weldering of 3 kinds of heterogeneity contents
Silk, the granularity of medicine core powder are 80 mesh, and prepared medicine core powder is put into mixed powder machine to mix taking-up in 5-6 hours spare.
The metal sheath of flux-cored wire selects mild steel steel band, and steel band specification is 0.3mm × 9mm, according to common medicine core
Welding wire preparation process produces, and above-mentioned uniformly mixed medicine core powder is added in metal sheath, and it is " O " type to prepare section
Flux-cored wire, gage of wire isThe filling rate of medicine core is 22-32%.
Base material used in embodiment is E40 steel plates, plate thickness 14mm, and soldering test carries out under environment of paddling.
The effect of embodiment：When being welded under environment of paddling using above-described embodiment flux-cored wire, the starting the arc is easy, electric arc combustion
It burns and stablizes, no blow-out current interruption phenomenon has splendid welding technological properties, and gained appearance of weld is beautiful, and postwelding deposited metal is anti-
Tensile strength is more than 540MPa, and flawless occurs when 4 times of banjo fixing butt jointing, 180 ° of plate thickness clod wash angle, has good impact flexibility,
Meet the welding of middle low carbon steel and low-alloy high-strength steel under environment of paddling.Postwelding deposited metal mechanical property of the embodiment of the present invention
It is shown in Table 1.
1 postwelding deposited metal mechanical property of the embodiment of the present invention of table
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (4)
- The welding self-protection flux-cored wire under environment 1. one kind is paddled, including metal sheath and medicine core, it is characterised in that：Medicine core Component and mass percent are：Rutile 35-55%, iron oxide 10-20%, aluminium oxide 5-12%, calcium carbonate 5-10%, fluorination Object 3-8%, titanium valve 2-5%, nickel powder 4-8%, molybdenum powder 1-2%, iron powder 15-25%.
- The welding self-protection flux-cored wire under environment 2. one kind according to claim 1 is paddled, it is characterised in that：The gold Belong to crust to be rolled by mild steel steel band.
- The welding self-protection flux-cored wire under environment 3. one kind according to claim 1 is paddled, it is characterised in that：Fluoride For CaF2, LiF and NaF threes combination, mass percent CaF250-70%, LiF 15-30%, NaF 15-30%.
- The welding self-protection flux-cored wire under environment 4. one kind according to claim 1 is paddled, it is characterised in that：Medicine core Filling rate is 22-32%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810429582.3A CN108526752B (en) | 2018-05-08 | 2018-05-08 | Self-protection flux-cored wire for welding in wading environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810429582.3A CN108526752B (en) | 2018-05-08 | 2018-05-08 | Self-protection flux-cored wire for welding in wading environment |
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| Publication Number | Publication Date |
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| CN108526752A true CN108526752A (en) | 2018-09-14 |
| CN108526752B CN108526752B (en) | 2020-06-30 |
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| CN201810429582.3A Active CN108526752B (en) | 2018-05-08 | 2018-05-08 | Self-protection flux-cored wire for welding in wading environment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110293330A (en) * | 2019-07-03 | 2019-10-01 | 哈尔滨工业大学（威海） | A kind of self-protection flux-cored wire of novel class submerged-arc welding |
| CN110497114A (en) * | 2019-08-23 | 2019-11-26 | 哈尔滨工业大学（威海） | A kind of low-alloy steel thermit powder auxiliary underwater wet welding self-protection flux-cored wire |
| CN111571066A (en) * | 2020-04-17 | 2020-08-25 | 江苏大学 | Low-hydrogen stainless steel self-protection flux-cored wire suitable for underwater environment |
| CN111843293A (en) * | 2020-05-11 | 2020-10-30 | 江苏大学 | Oxidized self-protection flux-cored wire and application |
| CN112743191A (en) * | 2020-12-28 | 2021-05-04 | 哈尔滨工程大学烟台研究院 | Underwater arc additive repair method |
| CN115161085A (en) * | 2022-08-02 | 2022-10-11 | 中国石油大学(华东) | Hydrogen-resistant reconstruction method for hydrogen pipeline by using natural gas additive based on competitive adsorption |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1846928A (en) * | 2005-04-05 | 2006-10-18 | 林肯环球公司 | Flux cored electrode with fluorine |
| CN101804533A (en) * | 2010-04-27 | 2010-08-18 | 上海林肯电气有限公司 | Gas shielded flux-cored wire for welding with low temperature, high toughness and full positions |
| CN103084761A (en) * | 2013-02-27 | 2013-05-08 | 哈尔滨工业大学（威海） | Self-protection core welding stick used for underwater wet welding |
| CN107498209A (en) * | 2017-07-31 | 2017-12-22 | 西安理工大学 | 18Ni250 stainless steels Self-protecting flux-cored wire and preparation method thereof |
| CN107914099A (en) * | 2017-11-27 | 2018-04-17 | 四川大西洋焊接材料股份有限公司 | Rutile-type flux-cored wire of 800MPa grades of tensile strength and preparation method thereof |
-
2018
- 2018-05-08 CN CN201810429582.3A patent/CN108526752B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1846928A (en) * | 2005-04-05 | 2006-10-18 | 林肯环球公司 | Flux cored electrode with fluorine |
| CN101804533A (en) * | 2010-04-27 | 2010-08-18 | 上海林肯电气有限公司 | Gas shielded flux-cored wire for welding with low temperature, high toughness and full positions |
| CN103084761A (en) * | 2013-02-27 | 2013-05-08 | 哈尔滨工业大学（威海） | Self-protection core welding stick used for underwater wet welding |
| CN107498209A (en) * | 2017-07-31 | 2017-12-22 | 西安理工大学 | 18Ni250 stainless steels Self-protecting flux-cored wire and preparation method thereof |
| CN107914099A (en) * | 2017-11-27 | 2018-04-17 | 四川大西洋焊接材料股份有限公司 | Rutile-type flux-cored wire of 800MPa grades of tensile strength and preparation method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110293330A (en) * | 2019-07-03 | 2019-10-01 | 哈尔滨工业大学（威海） | A kind of self-protection flux-cored wire of novel class submerged-arc welding |
| CN110293330B (en) * | 2019-07-03 | 2021-05-11 | 哈尔滨工业大学（威海） | Self-protection flux-cored wire for submerged-arc welding |
| CN110497114A (en) * | 2019-08-23 | 2019-11-26 | 哈尔滨工业大学（威海） | A kind of low-alloy steel thermit powder auxiliary underwater wet welding self-protection flux-cored wire |
| CN110497114B (en) * | 2019-08-23 | 2021-05-25 | 哈尔滨工业大学（威海） | Hot agent assisted underwater wet welding self-protection flux-cored wire for low alloy steel |
| CN111571066A (en) * | 2020-04-17 | 2020-08-25 | 江苏大学 | Low-hydrogen stainless steel self-protection flux-cored wire suitable for underwater environment |
| CN111571066B (en) * | 2020-04-17 | 2022-04-26 | 江苏大学 | Low-hydrogen stainless steel self-protection flux-cored wire suitable for underwater environment |
| CN111843293A (en) * | 2020-05-11 | 2020-10-30 | 江苏大学 | Oxidized self-protection flux-cored wire and application |
| CN112743191A (en) * | 2020-12-28 | 2021-05-04 | 哈尔滨工程大学烟台研究院 | Underwater arc additive repair method |
| CN115161085A (en) * | 2022-08-02 | 2022-10-11 | 中国石油大学(华东) | Hydrogen-resistant reconstruction method for hydrogen pipeline by using natural gas additive based on competitive adsorption |
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