CN104551438B - A kind of submerged-arc welding tubular powder core filaments - Google Patents
A kind of submerged-arc welding tubular powder core filaments Download PDFInfo
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- CN104551438B CN104551438B CN201410640117.6A CN201410640117A CN104551438B CN 104551438 B CN104551438 B CN 104551438B CN 201410640117 A CN201410640117 A CN 201410640117A CN 104551438 B CN104551438 B CN 104551438B
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- sheetmetal
- flux
- cored wire
- main body
- wire main
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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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
-
- 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
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/18—Submerged-arc welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Nonmetallic Welding Materials (AREA)
- Arc Welding In General (AREA)
Abstract
The present invention relates to welding technology field.A kind of submerged-arc welding tubular powder core filaments, including a flux-cored wire main body, flux-cored wire main body includes a metal level, medicine core it is enclosed with in metal level, medicine core includes following element by weight percentage, and C:0.1% 10% Mn:0.2% 3%, Si:0.5% 2%, Cr:3% 27%, Mo:2% 5%, surplus are Fe.The present invention adds Mo in the proportioning of traditional medicine core, it is achieved thereby that welding material performance high temperature resistant, anti abrasive, it is ensured that the intensity of weld seam, the large area desirably preventing layer is peeled off.
Description
Technical field
The present invention relates to welding technology field, particularly relate to flux-cored wire.
Background technology
At present, along with economic fast development, technical merit improves constantly, and industry is just from labor-intensive
Gradually converting to technology-intensive type, mechanization and automatization level improve constantly, and mechanical equipment component is worn and torn
Consume and cause huge economic loss.In all kinds of wear types, abrasive wear occupies the biggest ratio,
The most all there is abrasive wear in all kinds of mechanical parts, including mining machinery, engineering machinery, metallurgical machine
Tool, foundry machinery and forging machinery etc..The abrasion of all kinds of machineries, reduces production efficiency, decreases and make
Use the cycle.
At present, common submerged arc welding material, otherwise hardness is relatively low；Hardness is high, and crack resistance is very
Difference.Additionally, traditional submerged-arc welding is not provided with protective gas, molten bath is oxidizable.
Summary of the invention
It is an object of the invention to provide a kind of submerged-arc welding tubular powder core filaments, to solve at least one above-mentioned skill
Art problem.
Technical problem solved by the invention can realize by the following technical solutions:
A kind of submerged-arc welding tubular powder core filaments, including a flux-cored wire main body, it is characterised in that described medicine core
Welding wire main body includes a metal level, is enclosed with medicine core in described metal level, and described medicine core is with percentage by weight
Meter includes following element, C:0.1%-10% Mn:0.2%-3%, Si:0.5%-2%, Cr:3%-27%,
Mo:2%-5%, surplus are Fe.
The present invention adds Mo in the proportioning of traditional medicine core, it is achieved thereby that welding material is high temperature resistant, resistance to
The performance of abrasion, it is ensured that the intensity of weld seam, the large area desirably preventing layer is peeled off.
As a kind of preferred version, described medicine core is made up of following element by weight percentage, C:0.35%
Mn:2.7%, Si:1.2%, Cr:2.7%, Mo:0.25%, surplus are Fe.
As another kind of preferred version, described medicine core is made up of following element by weight percentage, C:0.5%
Mn:3%, Si:1%, Cr:4%, Mo:0.5%, surplus are Fe.
As another kind of preferred version, described medicine core is made up of following element by weight percentage, C:0.1%
Mn:1.4%, Si:0.3%, Cr:2.5%, Mo:0.5%, surplus are Fe.
As another kind of preferred version, described medicine core is made up of following element by weight percentage, C:5.6%
Mn:2.0%, Si:2.5%, Cr:27%, Mo:1.3%, surplus are Fe.
As another kind of preferred version, described medicine core is made up of following element by weight percentage, C:4%
Mn:1.9%, Si:1.4%, Cr:27%, Mo:1.3%, surplus are Fe.
The outer wall of described flux-cored wire main body is provided with an antioxidation coating, and described antioxidation coating is by anti-oxidant
Reducing agent is evenly applied to flux-cored wire body outer wall and forms.
This present invention, by being provided with an antioxidation coating at outer wall, prevents flux-cored wire main body from affecting because of oxidation
Properties of product.Traditional flux-cored wire body surfaces has often set up a steel surrounding layer, oxidizable, this
Invention, by being provided with an antioxidation coating at flux-cored wire body outer surface, optimizes its structure, it is ensured that product
Performance do not affected by extraneous factor.The thickness of antioxidation coating is not more than 1mm.
As a kind of preferred version, the outer wall of described flux-cored wire main body is provided with at least one depression, described
The cross section semicircular in shape of depression or triangle.
The present invention is by being provided with depression at the outer wall of the smooth flux-cored wire of tradition, thus suitable reducing
The local thickness of flux-cored wire main body, it is simple to medicine core fully reacts, improves dissipating of flux-cored wire main body
Enthusiasm condition.
Described depression is arranged in the outer wall of described flux-cored wire main body in the shape of a spiral.
The outer wall of described flux-cored wire main body is provided with at least three road depressions, and the length direction of described depression is parallel
Length direction in described flux-cored wire main body.
As another kind of preferred version, the outer wall of described flux-cored wire main body is provided with pit, and described pit exists
The axis direction of described outer sheetmetal outer wall is equidistantly arranged, and described pit is in the radial direction of described outer sheetmetal outer wall
On arrange ringwise.
It is easy to improve the heat dispersal situations of flux-cored wire main body.
Described metal level includes an outer sheetmetal, is provided with first cavity housing medicine core in described outer sheetmetal,
The cross section of described outer sheetmetal is an ellipse, and the thickness of described outer sheetmetal is not more than 3mm.
The present invention is non-circular cross-section by being improved by the circular cross section of the outer sheetmetal of tradition flux-cored wire,
On the premise of filling medicine core amount is constant, decrease cross-sectional area, and, non-circular cross-section compares circle
The cross section flux-cored wire main body ductility in commissure is good, improves welding quality, improves welding bead shaping
Smoothness planarization, the flux-cored wire main body that the present invention is more traditional be difficult to roll, stationarity is good；Additionally,
The present invention, by controlling the thickness of outer sheetmetal, thus avoids owing to outer sheetmetal is blocked up, and the medicine core caused without
Method fully reacts, and is easy to medicine core by the structure of the present invention and reacts.
The length of the major axis of described ellipse is not more than 6mm, and the length of the short axle of described ellipse is not more than 4mm；
The inwall of described outer sheetmetal is fixedly connected with conducting strip, and the cross section of described conducting strip is a line segment,
The length of described line segment is not more than the 2/3 of the length of the major axis of described ellipse, and the thickness of described line segment is with described
The consistency of thickness of outer sheetmetal.
The flux-cored wire main body of typical round, due to cross-sectional area, the medicine core of hollow cavity center is not led
Electricity, the present invention is by being provided with a conducting strip, thus carries out electricity transmission by conducting strip and outer sheetmetal, and
Electricity is delivered to hollow cavity central authorities, thus realizes the medicine core conduction of hollow cavity center, thus carry
The reaction completeness of high medicine core.
Described conducting strip is provided with two, and the cross-section of said two conducting strip is on same straight line, and institute
State the straight line residing for the major axis that straight line is described ellipse；
The length of described line segment is not more than the 1/2 of the length of the major axis of described ellipse.
The thickness of described antioxidation coating is not more than 1mm.
Described medicine in-core includes carbon dust, ground hematite, generate under carbon dust and ground hematite high-temperature condition iron with
Carbon-dioxide protecting gas, for generating the mol ratio of the carbon dust of carbon-dioxide protecting gas, ground hematite
For 2:3.The present invention is by the composition of medicine core thus realizes the generation of protective gas carbon dioxide, it is not necessary to
In welding process, use instrument to be full of protective gas in the outside of flux-cored wire, thus ensure welding quality.
On the basis of present invention flux-cored wire needed for tradition submerged-arc welding, it is provided with protective gas, thus prevents from passing
The problem that system submerged-arc welding is easily generated the oxidation in molten bath.
As a kind of preferred version, described metal level include one in sheetmetal, an outer sheetmetal, described interior sheetmetal
Being two isocentric circular arc with the cross section of described outer sheetmetal, the radian of two described isocentric circular arc is identical, and
Opening direction is consistent；
Described metal level also includes two connection sheetmetals, and described outer sheetmetal is by two described connection sheetmetals even
Connect described interior sheetmetal, to surround first cavity housing medicine core, in described first cavity, be provided with described medicine
Core；
Described interior sheetmetal surrounds the second cavity with the described sheetmetal that is connected, and as gas channel, described air-flow leads to
The gas outlet conducting of road and an air pump, is filled with protective gas in described air pump；
Two described connection sheetmetals are parallel to each other, and the distance of two described connection sheetmetals is interior not less than described
The 1/2 of the external diameter of sheetmetal.
The flux-cored wire main body of said structure improves thermal diffusivity, it is simple to gas escapes.
Described protective gas can be carbon dioxide, it is also possible to be the mixed gas of carbon dioxide and argon gas.
As another kind of preferred version, described metal level include one in sheetmetal, an outer sheetmetal, described interior steel
Skin is two concentric circles with the cross section of described outer sheetmetal, and described interior sheetmetal and described outer sheetmetal surround an appearance
Putting the first cavity of medicine core, be provided with described medicine core in described first cavity, described interior sheetmetal surrounds one second
Cavity, is a gas channel with described second cavity.
Tradition flux-cored wire generally requires protective gas in welding process thus realizes welding quality, this
Bright in the structure of flux-cored wire, it is provided with a gas channel, it is simple to the conducting of protective gas, compares tradition weldering
In termination process, it is full of protective gas in the outside of flux-cored wire, thus ensures welding quality, however this
Gas protects mode, is easily caused protective gas in welding process and escapes not exclusively, affects welding quality, this
Bright by being provided with a gas channel in the inside of flux-cored wire, controlled in welding process by protective gas
Overheated, improve thermal diffusivity, it is simple to gas escapes.
The outer wall of described flux-cored wire main body is provided with at least three air inlet, and described air inlet is by one even
Connect road and described gas channel UNICOM, the air inlet that in described at least three air inlet, any two is adjacent
Spacing is consistent；
Described flux-cored wire main body also includes that an air pump, described air pump are provided with a gas outlet, described gas outlet
By pipeline and described air inlet UNICOM, the external diameter of described pipeline matches with the internal diameter of described air inlet；
Described flux-cored wire main body fills protective gas by air pump in described gas channel.
The present invention is by being provided with different air inlets, thus according to the use of flux-cored wire main body needed for welding
Amount uses and is inflated the air inlet not existed together, and decreases air-pump inflating amount, shortens the inflation of air pump
Path.
Described protective gas is carbon dioxide.
Described protective gas can also be the mixed gas of carbon dioxide and argon gas.
An anti-return film preventing gas from inversely circulating, described anti-return film position it is provided with in described second cavity
In the second cavity inner wall at described air inlet；
Described anti-return film is provided with an arc convex, and described arc convex has cross cracking；
Described arc convex is towards the circulating direction of described gas channel.
The present invention is by arranging anti-return film at opening part, it is to avoid poured the protection of gas channel by air pump
Gas, inversely turns on.
Described arc convex is towards the axis of described air inlet.
Described anti-return film can in hemispherical, using in hemispherical anti-return film as described arc convex.
Described anti-return film can also be in circular, and the middle part of described anti-return film is provided with described arc convex,
The internal diameter of described annulus is equal to the external diameter of described arc convex.
A kind of submerged-arc welding tubular powder core filaments manufacture craft, it is characterised in that comprise the steps:
Step one, prepare metal level；
Step 2, medicine core entraining into metal level, described medicine core includes following element by weight percentage,
C:0.1%-10% Mn:0.2%-3%, Si:0.5%-2%, Cr:3%-27%, Mo:2%-5%,
Surplus is Fe；
Step 3, will be wrapped with medicine core steel band use multi-drawing shaping method draw flux-cored wire monomer.
It is additionally provided with step 4 after step 3, flux-cored wire monomer laser welding is formed a flux-cored wire master
Body.It is easy to extend the length of tradition flux-cored wire by step 4.
The structure of described flux-cored wire monomer is consistent, and the metal level of described flux-cored wire monomer includes an outer steel
Skin, sheetmetal in, be enclosed with described medicine core, described interior sheetmetal between described outer sheetmetal and described interior sheetmetal
Surrounding one second cavity, described outer sheetmetal is provided with an air inlet, described air inlet and described second cavity
Between be provided with a communicating passage；
Described flux-cored wire monomer is provided with an anti-return film preventing gas from inversely circulating, described anti-return
Film is located close to described second cavity inner wall at described air inlet；
Described anti-return film is provided with an arc convex, and described arc convex has cross cracking；
Described arc convex is towards the axis of described air inlet.
Described anti-return film passes through laser welding in the inwall of described flux-cored wire monomer.
The manufacture craft of described medicine core, including first the material making medicine core being pulverized, is heated into slurry,
Adding the carbon dioxide of high pressure in the slurry of heat, carbon dioxide gas cognition is formed tiny in slurry
High pressure bubble；Under closed environment, grind slurry after cooling, again form powder, with described powder
Enter in metal level as flux cored filler.Discharge pressure, powder agglomates meeting fragmentation after slurry cooling, become unqualified
But still contain high pressure bubble in unqualified.When, in welding process, after medicine core melted by heat, gas is released to be put
Go out carbon dioxide, form protection.
The manufacture craft of described medicine core, including first the material making medicine core being pulverized, is heated into slurry,
Adding the carbon dioxide of high pressure in the slurry of heat, carbon dioxide gas cognition is formed tiny in slurry
High pressure bubble；Under closed environment, become unqualified after cooling, enter metal level using unqualified as flux cored filler
In.Slurry cooling after discharge pressure, powder agglomates can fragmentation, become unqualified but unqualified in still contain high pressure gas
Bubble.When, in welding process, after medicine core melted by heat, gas is released releasing carbon dioxide, formed
Protection.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation that the present invention is embodied as 1；
Fig. 2 is the another kind of structural representation that the present invention is embodied as 1；
Fig. 3 is the another kind of structural representation that the present invention is embodied as 1；
Fig. 4 is a kind of cross-sectional structure schematic diagram that the present invention is embodied as 3；
Fig. 5 is the part-structure schematic diagram that the present invention is embodied as 3 employing Fig. 4 structures；
Fig. 6 is a kind of structural representation that the present invention is embodied as 2.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and effect and be readily apparent from
Solve, the present invention is expanded on further below in conjunction with being specifically illustrating.
A kind of submerged-arc welding tubular powder core filaments, including a flux-cored wire main body, flux-cored wire main body includes a gold medal
Belonging to layer, be enclosed with medicine core in metal level, medicine core includes following element by weight percentage, C:
0.1%-10% Mn:0.2%-3%, Si:0.5%-2%, Cr:3%-27%, Mo:2%-5%, surplus
For Fe.The present invention adds Mo in the proportioning of traditional medicine core, it is achieved thereby that welding material is high temperature resistant,
Anti abrasive performance, it is ensured that the intensity of weld seam, the large area desirably preventing layer is peeled off.
The design considerations of drug core component of the present invention is: C: be that strong austenitizing forms element and reduction
Ms point element.In the design of resurfacing welding material, C is most important intensified element, is also embrittlement unit simultaneously
Element.C has the effect of gap solution strengthening, increases the content of C in material, will promote twin crystal martensite
Formation, increase carbide quantity, reduce carbonization material dot spacing, increase post-curing peak value, it is thus achieved that
High hardness.But the impact toughness that the increase of C content can make material declines.Mn: be stable austenite unit
Element, reduces Ms point, improves quenching degree.Additionally, Mn or good deoxidier and desulfurizing agent, Mn
Advantageously reduce the oxygen content in weld seam with Si synergy, be combined formation MnS with S, prevent low melting point
FeS formed, prevent from weld metal produces the tendency of fire check, improve the energy of the heat resistanceheat resistant crackle of weld seam
Power.Mn and iron can form solid solution, improve ferrite and the intensity of austenite and hardness in steel, simultaneously
It is again weak carbide former, replaces part Fe in cementite, form Composite carburization body.But cross
The Mn content of amount will make the grain coarsening of steel, make the ductility reduction of steel, and toughness declines.Si: be strong iron
Ferritic forms element, and Si, in addition to improving the effect of solution strengthening in ferrite and austenite, also has de-
Oxygen effect, reduces the oxygen content in weld seam, thus reduces the detrimental effect of oxygen Resistance of Weld Metal.Cr: carry
High-hardenability, produces solution strengthening, promotes the formation of M, in ferrochrome, when Cr content is 27%
Within time, the impact toughness of alloy can increase along with the increase of Cr content, but more than 27%, impact tough
Degree then can drastically decline.The post-curing peak temperature of Cr is at about 500 DEG C.Content the containing with C of Cr
Amount increase and increase.
As a kind of preferred version, medicine core is made up of following element by weight percentage, C:0.35%
Mn:2.7%, Si:1.2%, Cr:2.7%, Mo:0.25%, surplus are Fe.Preferred as another kind
Scheme, medicine core is made up of following element by weight percentage, C:0.5% Mn:3%, Si:1%,
Cr:4%, Mo:0.5%, surplus are Fe.As another kind of preferred version, medicine core is with percentage by weight
Meter be made up of following element, C:0.1% Mn:1.4%, Si:0.3%, Cr:2.5%, Mo:0.5%,
Surplus is Fe.As another kind of preferred version, medicine core is made up of following element by weight percentage, C:
5.6% Mn:2.0%, Si:2.5%, Cr:27%, Mo:1.3%, surplus are Fe.As another
Planting preferred version, medicine core is made up of following element by weight percentage, C:4% Mn:1.9%, Si:
1.4%, Cr:27%, Mo:1.3%, surplus are Fe.
The outer wall of flux-cored wire main body is provided with an antioxidation coating, and antioxidation coating is equal by anti-oxidation reducing agent
The even flux-cored wire body outer wall that is coated on forms.This present invention is by being provided with an antioxidation coating at outer wall, anti-
Only flux-cored wire main body affects properties of product because of oxidation.Traditional flux-cored wire body surfaces often sets up
Having a steel surrounding layer, oxidizable, the present invention is anti-oxidation by being provided with one at flux-cored wire body outer surface
Layer, optimizes its structure, it is ensured that the performance of product is not affected by extraneous factor.The thickness of antioxidation coating
It is not more than 1mm.
As a kind of preferred version, the outer wall of flux-cored wire main body is provided with at least one depression, the horizontal stroke of depression
Cross section semicircular in shape or triangle.The present invention is provided with recessed by the outer wall of the flux-cored wire smooth in tradition
Fall into, thus the suitable local thickness reducing flux-cored wire main body, it is simple to medicine core fully reacts,
Improve the heat dispersal situations of flux-cored wire main body.Depression is arranged in the outer wall of flux-cored wire main body in the shape of a spiral.
The outer wall of flux-cored wire main body is provided with at least three road depressions, and the length direction of depression is parallel to flux-cored wire master
The length direction of body.As another kind of preferred version, the outer wall of flux-cored wire main body is provided with pit, pit
The axis direction of sheetmetal outer wall is equidistantly arranged outside, arranging the most ringwise of pit sheetmetal outer wall outside
Cloth.It is easy to improve the heat dispersal situations of flux-cored wire main body.
Medicine in-core includes carbon dust, ground hematite, generates iron and dioxy under carbon dust and ground hematite high-temperature condition
Changing carbon protective gas, for generating the carbon dust of carbon-dioxide protecting gas, the mol ratio of ground hematite is 2:
3.The present invention is by the composition of medicine core thus realizes the generation of protective gas carbon dioxide, it is not necessary to welding
Cheng Zhong, uses instrument to be full of protective gas in the outside of flux-cored wire, thus ensures welding quality.
On the basis of present invention flux-cored wire needed for tradition submerged-arc welding, it is provided with protective gas, thus prevents from passing
The problem that system submerged-arc welding is easily generated the oxidation in molten bath.
Structure about metal level can have kinds of schemes, specific as follows:
See Fig. 1, Fig. 2, Fig. 3, be embodied as 1: metal level includes an outer sheetmetal 1, in outer sheetmetal 1
Being provided with first cavity 3 housing medicine core, the cross section of outer sheetmetal 1 is an ellipse, the thickness of outer sheetmetal 1
It is not more than 3mm.The present invention is by improveing the circular cross section of the outer sheetmetal 1 of tradition flux-cored wire as ellipse
Circle cross-section, on the premise of filling medicine core amount is constant, decreases cross-sectional area, and, oval transversal
It is good that the circular cross section flux-cored wire main body ductility in commissure is compared in face, improves welding quality, improves
The smoothness planarization of welding bead shaping, flux-cored wire main body that the present invention is more traditional is difficult to roll, fixing
Property is good；Additionally, the present invention is by controlling the thickness of outer sheetmetal 1, thus avoid owing to outer sheetmetal 1 is blocked up,
And the medicine core caused cannot fully react, it is easy to medicine core by the structure of the present invention and reacts.Ginseng
Seeing that Fig. 2, the length of oval major axis are not more than 6mm, the length of oval short axle is not more than 4mm；Outward
The inwall of sheetmetal 1 is fixedly connected with conducting strip 8, and the cross section of conducting strip 8 is a line segment, the length of line segment
The consistency of thickness of the 2/3 of the length of the most oval major axis, the thickness of line segment and outer sheetmetal 1.Traditional round
The flux-cored wire main body of shape, due to cross-sectional area, the medicine core of hollow cavity center is non-conductive, the present invention
By being provided with a conducting strip 8, thus carry out electricity transmission by conducting strip 8 and outer sheetmetal 1, and by electricity
It is delivered to hollow cavity central authorities, thus realizes the medicine core conduction of hollow cavity center, thus improve medicine core
Reaction completeness.Seeing Fig. 3, conducting strip 8 is provided with two, and the cross-section of two conducting strips 8 is in same
On one straight line, and straight line is the oval straight line residing for major axis；The length of line segment is not more than oval major axis
Length 1/2.
Be embodied as 2: see Fig. 6, metal level include one in the outer sheetmetal 1 of sheetmetal 2, interior sheetmetal 2
Being two isocentric circular arc with the cross section of outer sheetmetal 1, the radian of two isocentric circular arc is identical, and openings
To unanimously；Metal level also includes two connection sheetmetals 5, in outer sheetmetal 1 is connected by two connection sheetmetals 5
Sheetmetal 2, to surround first cavity 3 housing medicine core, is provided with medicine core in the first cavity 3；Interior sheetmetal 2
Surrounding the second cavity 4 with being connected sheetmetal 5, as gas channel, the gas outlet of gas channel and an air pump is led
Logical, it is filled with protective gas in air pump；Two connection sheetmetals 5 are parallel to each other, and two connection sheetmetals 5
Distance not less than interior sheetmetal 2 external diameter 1/2.The flux-cored wire main body of said structure improves thermal diffusivity, just
Escape in gas.Protective gas can be carbon dioxide, it is also possible to be the gaseous mixture of carbon dioxide and argon gas
Body.
Be embodied as 3: see Fig. 4, Fig. 5, metal level include one in the outer sheetmetal 1 of sheetmetal 2, interior steel
Skin 2 is two concentric circles with the cross section of outer sheetmetal 1, and interior sheetmetal 2 surrounds one with outer sheetmetal 1 and houses medicine
First cavity 3 of core, is provided with medicine core in the first cavity 3, interior sheetmetal 2 surrounds one second cavity 4, with
Two cavitys 4 are a gas channel.Tradition flux-cored wire in welding process, generally require protective gas thus
Realizing welding quality, the present invention is provided with a gas channel in the structure of flux-cored wire, it is simple to protective gas
Conducting, compare in conventional welding process, be full of protective gas in the outside of flux-cored wire, thus ensure
Welding quality, but this gas protects mode, is easily caused protective gas in welding process and escapes not exclusively,
Affecting welding quality, the present invention is by being provided with a gas channel in the inside of flux-cored wire, by protection gas
It is overheated that body controls in welding process, improves thermal diffusivity, it is simple to gas escapes.Outside flux-cored wire main body
Wall is provided with at least three air inlet, and air inlet is by a connection channel 7 and gas channel 6 UNICOM, extremely
The air inlet spacing that in few three air inlets, any two is adjacent is consistent；Flux-cored wire main body also includes a gas
Pump, air pump is provided with a gas outlet, and gas outlet is by pipeline and air inlet UNICOM, the external diameter of pipeline and air inlet
The internal diameter of mouth matches；Flux-cored wire main body fills protective gas by air pump in gas channel.The present invention
By being provided with different air inlets, thus use not according to the consumption of the flux-cored wire main body needed for welding
The air inlet existed together is inflated, and decreases air-pump inflating amount, shortens the inflation path of air pump.
Protective gas is carbon dioxide.Protective gas can also be the mixed gas of carbon dioxide and argon gas.
Being provided with an anti-return film preventing gas from inversely circulating in second cavity 4, anti-return film is located close to
The second cavity 4 inwall at air inlet；Anti-return film is provided with an arc convex, and arc convex has
Cross crack；Arc convex is towards the circulating direction of gas channel.The present invention is by arranging at opening part
Anti-return film, it is to avoid poured the protective gas of gas channel by air pump, inversely turn on.
Arc convex is towards the axis of air inlet.Anti-return film can be in hemispherical, to prevent in hemispherical
Backflow film is as arc convex.Anti-return film can also be in circular, and the middle part of anti-return film is provided with arc
Projection, the internal diameter of annulus is equal to the external diameter of arc convex.
As a kind of preferred version, the inwall of interior sheetmetal is provided with at least three road depressions, the length side of depression
To being parallel to the length direction of flux-cored wire main body, the cross section semicircular in shape of depression or triangle.This
Invent and be provided with three roads depressions by the inwall of the flux-cored wire smooth in tradition, so that interior sheetmetal and guarantor
Protect gas to be fully contacted, improve internal heat dissipating effect.As another kind of preferred version, the inwall of interior sheetmetal
Being provided with pit, pit is equidistantly arranged at the axis direction of interior sheetmetal inwall, and pit is at interior sheetmetal inwall
Arrange the most ringwise.So that interior sheetmetal is fully contacted with protective gas, improve internal heat dissipating
Effect.
Flux-cored wire main body includes a welding wire clamping part, and welding wire clamping part is made up of magnetic.Thus when using
It is fixed on the positioning by welding wire clamping part when family is welded, folder can be improved by the effect of magnetic
Holding effect fruit.
Flux-cored wire main body also in be provided with a NFC chip.The present invention is by being provided with a NFC chip, it is simple to
The terminal devices such as mobile phone carry out radio communication with the NFC chip being provided with in flux-cored wire main body and are connected, and understand
The parameter information of flux-cored wire.
A kind of submerged-arc welding tubular powder core filaments manufacture craft, it is characterised in that comprise the steps:
Step one, prepare metal level；Step 2, medicine core entraining into metal level, medicine core is with percentage by weight
Meter includes following element, C:0.1%-10% Mn:0.2%-3%, Si:0.5%-2%, Cr:3%-27%,
Mo:2%-5%, surplus are Fe；Step 3, will be wrapped with medicine core steel band use multi-drawing shaping side
Farad flux-cored wire monomer processed；Step 4, forms a flux-cored wire master by flux-cored wire monomer laser welding
Body.
The structure of flux-cored wire monomer is consistent, and the metal level of flux-cored wire monomer includes an outer sheetmetal, in one
Sheetmetal, is enclosed with medicine core between outer sheetmetal and interior sheetmetal, interior sheetmetal surrounds one second cavity, on outer sheetmetal
It is provided with an air inlet, between air inlet and the second cavity, is provided with a communicating passage；Flux-cored wire monomer is provided with
One prevents the anti-return film that gas inversely circulates, and anti-return film is located close in the second cavity at air inlet
Wall；Anti-return film is provided with an arc convex, and arc convex has cross cracking；Arc convex court
To the axis of air inlet.Anti-return film laser welding is in the second cavity inner wall.
Anti-return film passes through laser welding in the inwall of flux-cored wire monomer.
The manufacture craft of medicine core, including first the material making medicine core being pulverized, is heated into slurry,
Adding the carbon dioxide of high pressure in the slurry of heat, carbon dioxide gas cognition is formed tiny in slurry
High pressure bubble；Under closed environment, become unqualified after cooling, enter in metal level as flux cored filler using unqualified.
Slurry cooling after discharge pressure, powder agglomates can fragmentation, become unqualified but unqualified in still contain high pressure bubble.
When, in welding process, after medicine core melted by heat, gas is released releasing carbon dioxide, forms protection.
The general principle of the present invention and principal character and advantages of the present invention have more than been shown and described.One's own profession
Skilled person will appreciate that of industry, the present invention is not restricted to the described embodiments, above-described embodiment and explanation
The principle that the present invention is simply described described in book, without departing from the spirit and scope of the present invention,
The present invention also has various changes and modifications, and these changes and improvements both fall within claimed invention model
In enclosing.Claimed scope is defined by appending claims and equivalent thereof.
Claims (7)
1. a submerged-arc welding tubular powder core filaments, including a flux-cored wire main body, it is characterised in that described medicine
Core welding wire main body includes a metal level, is enclosed with medicine core in described metal level, and described medicine core is with weight percent
Include following element than meter, C:0.1%-10% Mn:0.2%-3%, Si:0.5%-2%, Cr:3%-27%,
Mo:2%-5%, surplus are Fe；
The outer wall of described flux-cored wire main body is provided with at least one depression, and the cross section of described depression is semicircle
Shape or triangle；
Described depression is arranged in the outer wall of described flux-cored wire main body in the shape of a spiral.
A kind of submerged-arc welding tubular powder core filaments the most according to claim 1, it is characterised in that described medicine
The outer wall of core welding wire main body is provided with an antioxidation coating, and described antioxidation coating is uniform by anti-oxidation reducing agent
It is coated on flux-cored wire body outer wall to form.
A kind of submerged-arc welding tubular powder core filaments the most according to claim 1, it is characterised in that described medicine
The outer wall of core welding wire main body is provided with pit, and described metal level includes an outer sheetmetal, and described pit is outside described
The axis direction of sheetmetal outer wall is equidistantly arranged, described pit at described outer sheetmetal outer wall radially in ring
Shape is arranged.
A kind of submerged-arc welding tubular powder core filaments the most according to claim 1, it is characterised in that described gold
Belong to layer and include an outer sheetmetal, in described outer sheetmetal, be provided with first cavity housing medicine core, described outer sheetmetal
Cross section be one oval, the thickness of described outer sheetmetal is not more than 3mm；
The length of the major axis of described ellipse is not more than 6mm, and the length of the short axle of described ellipse is not more than 4mm；
The inwall of described outer sheetmetal is fixedly connected with conducting strip, and the cross section of described conducting strip is a line segment,
The length of described line segment is not more than the 2/3 of the length of the major axis of described ellipse, and the thickness of described line segment is with described
The consistency of thickness of outer sheetmetal.
A kind of submerged-arc welding tubular powder core filaments the most according to claim 1, it is characterised in that described medicine
In-core includes carbon dust, ground hematite, generates iron and carbon dioxide guarantor under carbon dust and ground hematite high-temperature condition
Protecting gas, for generating the carbon dust of carbon-dioxide protecting gas, the mol ratio of ground hematite is 2:3.
A kind of submerged-arc welding tubular powder core filaments the most according to claim 1, it is characterised in that described gold
Belong to sheetmetal, an outer sheetmetal in layer includes, the cross section of described interior sheetmetal and described outer sheetmetal be two together
Heart circular arc, the radian of two described isocentric circular arc is identical, and opening direction is consistent；
Described metal level also includes two connection sheetmetals, and described outer sheetmetal is by two described connection sheetmetals even
Connect described interior sheetmetal, to surround first cavity housing medicine core, in described first cavity, be provided with described medicine
Core；
Described interior sheetmetal surrounds the second cavity with the described sheetmetal that is connected, and as gas channel, described air-flow leads to
The gas outlet conducting of road and an air pump, is filled with protective gas in described air pump；
Two described connection sheetmetals are parallel to each other, and the distance of two described connection sheetmetals is interior not less than described
The 1/2 of the external diameter of sheetmetal.
A kind of submerged-arc welding tubular powder core filaments the most according to claim 1, it is characterised in that described gold
Belong to sheetmetal, an outer sheetmetal in layer includes, the cross section of described interior sheetmetal and described outer sheetmetal be two together
Heart circle, described interior sheetmetal and described outer sheetmetal surround first cavity housing medicine core, described first cavity
Inside being provided with described medicine core, described interior sheetmetal surrounds one second cavity, is that an air-flow leads to described second cavity
Road；
The outer wall of described flux-cored wire main body is provided with at least three air inlet, and described air inlet is by one even
Connect road and described gas channel UNICOM, the air inlet that in described at least three air inlet, any two is adjacent
Spacing is consistent；
Described flux-cored wire main body also includes that an air pump, described air pump are provided with a gas outlet, described gas outlet
By pipeline and described air inlet UNICOM, the external diameter of described pipeline matches with the internal diameter of described air inlet；
Described flux-cored wire main body fills protective gas by air pump in described gas channel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410640117.6A CN104551438B (en) | 2014-11-13 | 2014-11-13 | A kind of submerged-arc welding tubular powder core filaments |
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|---|---|---|---|
| CN201410640117.6A CN104551438B (en) | 2014-11-13 | 2014-11-13 | A kind of submerged-arc welding tubular powder core filaments |
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| CN104551438A CN104551438A (en) | 2015-04-29 |
| CN104551438B true CN104551438B (en) | 2016-08-17 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107322182A (en) * | 2017-08-19 | 2017-11-07 | 安徽鼎恒再制造产业技术研究院有限公司 | Idle pulley, which is remanufactured, uses submerged-arc welding flux cored wire |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08108296A (en) * | 1994-10-06 | 1996-04-30 | Nippon Steel Weld Prod & Eng Co Ltd | Flux cored wire for welding cr-mo low-alloy heat resistant steel |
| CN101062533B (en) * | 2006-04-28 | 2011-12-14 | 北京中煤大田耐磨材料有限公司 | Abrasion-proof pile-up welding flux-cored wire for roll squeezer |
| CN100463762C (en) * | 2006-05-24 | 2009-02-25 | 首钢总公司 | Half steel roller submerged arc building-up flux-cored wire |
| CN101870043B (en) * | 2009-04-24 | 2012-05-23 | 陈学成 | Special flux-cored wire for repairing hot-rolled blooming roll |
| CN101850482A (en) * | 2010-06-23 | 2010-10-06 | 南通晨曦焊业有限公司 | Continuous casting roll hardfacing flux-cored wire |
| CN102554494A (en) * | 2010-12-17 | 2012-07-11 | 江苏耐尔冶电集团有限公司 | Novel high wear resistant flux-cored wire |
| JP5899007B2 (en) * | 2012-03-05 | 2016-04-06 | 日鐵住金溶接工業株式会社 | Flux-cored wire for hardfacing arc welding |
| CN103418928A (en) * | 2013-08-27 | 2013-12-04 | 昆山市宏嘉焊锡制造有限公司 | Novel lead-free solder wire |
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2014
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