CN106112305B - A kind of inexpensive self-protection flux-cored wire containing different grain size deoxidier and preparation method thereof - Google Patents
A kind of inexpensive self-protection flux-cored wire containing different grain size deoxidier and preparation method thereof Download PDFInfo
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- CN106112305B CN106112305B CN201610609858.7A CN201610609858A CN106112305B CN 106112305 B CN106112305 B CN 106112305B CN 201610609858 A CN201610609858 A CN 201610609858A CN 106112305 B CN106112305 B CN 106112305B
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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
-
- 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
-
- 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
- B23K35/362—Selection of compositions of fluxes
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The present invention discloses a kind of inexpensive self-protection flux-cored wire containing different grain size deoxidier and preparation method thereof, and using mild-carbon steel strip as crust, medicine core includes：The high carbon ferro-chrome of 62~75wt%, 10%~25% deoxidier, surplus is iron powder, wherein, the mechanical impurity that the deoxidier is made of graphite, cellulose powder, almag and silicomangan, the graphite, cellulose powder, almag and silicomangan are made of respectively at least two different grain sizes, and the medicine core accounts for 52~56wt% of Quality of Final Welding Wire.Welding wire provided by the invention, abundant in entirely welding stage deoxidation, welding technological properties protrudes, and overlay cladding has the characteristics that hardness is high, wearability is good, and welding bead surface, substantially without slag, multilayer welding manufactures of low cost without scarfing cinder, welding wire.
Description
Technical field
The invention belongs to the welding field in Materials Processing Engineering, more particularly to a kind of containing different grain size deoxidier
Inexpensive self-protection flux-cored wire and preparation method thereof.
Background technology
Due to self-protection flux-cored wire have it is easy to operate, without additional protective gas, the advantages of deposition efficiency is high,
In terms of the field repair of large wear resistant part, there is advantageous advantage, be with a wide range of applications.However, self-shield
Flux-cored wire can only realize the functions such as deoxidation, fixed nitrogen, gas making by medicine core component in the welding process, to realize to melting gold
The protection of category.And many deoxidiers, it is often more easy to that deoxygenation occurs in some high-temperature time section, so as to big rapidly
Amount consumption, so as to ensure there is generation deoxygenation in entire welding temperature constant interval scope, particularly after welding
The deoxidation effect in molten bath stage phase.This result in current self protection pile-up welding flux core welding wire be susceptible to stomata, splash big, weld seam into
The problems such as shape difference, processing performance remain the space further promoted.
The content of the invention
Goal of the invention：For defect in the prior art, the present invention provides a kind of containing different grain size deoxidier
Inexpensive self-protection flux-cored wire, it is a further object of the present invention to provide the preparation methods of the flux-cored wire.
Technical solution：To achieve the above object, the present invention uses following technical scheme：
The inexpensive self-protection flux-cored wire containing different grain size deoxidier of the present invention, including mild-carbon steel strip and medicine core,
For flux cored filler in mild-carbon steel strip, the medicine core includes the component of following mass percent：The high carbon ferro-chrome of 62~75wt%,
10%~25% deoxidier, surplus are iron powder, wherein, the deoxidier is graphite, cellulose powder, almag and silicomanganese
The mechanical impurity that alloy is formed, the graphite, cellulose powder, almag and silicomangan respectively by least two not
One-size forms, and wherein at least one granularity is compared with coarseness, such as 40 mesh, 50 mesh, 60 mesh, 70 mesh, 80 mesh, and one kind is relatively thin
Granularity, such as 160 mesh, 170 mesh, 180 mesh, 200 mesh, 250 mesh, 300 mesh, the medicine core account for 52~56wt% of Quality of Final Welding Wire.
Further, the varigrained graphite is added in combination by 60 mesh graphite and 200 mesh graphite, described
The addition of 60 mesh graphite is equivalent to 1~3wt% of medicine core quality, and the addition of the 200 mesh graphite is equivalent to the medicine core
1.5~2.5wt% of quality.
Further, the varigrained cellulose powder by 60 mesh cellulose powders and 200 mesh cellulose powders with
The mode of combination adds in, and the addition of the 60 mesh cellulose powder is equivalent to 1~2.5wt% of medicine core quality, 200 mesh
The addition of cellulose powder is equivalent to 0.5~1wt% of the medicine core quality.
Further, the varigrained almag by 60 mesh almags and 200 mesh almags to combine
Mode adds in, the additions of the 60 mesh almag and 200 mesh almags be equivalent to the medicine core quality 1~
3wt%.
Further, the varigrained silicomangan by 60 mesh silicomangans and 200 mesh silicomangans to combine
Mode adds in, the additions of the 60 mesh silicomangan and 200 mesh silicomangans be equivalent to the medicine core quality 2~
5wt%.
Further, the high carbon ferro-chrome in the medicine core and the grain size of iron powder component are equal to 80 mesh.
Further, the high carbon ferro-chrome phosphorus content is 9.0~9.5wt%, and chrome content is 62~72wt%, remaining is
Iron；The almag aluminum content is 47~53wt%, remaining is magnesium；The silicomangan silicon content for 47~
53wt%, remaining is manganese.
Further, the mild-carbon steel strip thickness × width is 0.5 × 21mm.
Further, any one in a diameter of 2.8mm, 3.2mm, 3.5mm, 3.8mm and 4.2mm of the welding wire.
Present invention further propose that the preparation side of the above-mentioned inexpensive self-protection flux-cored wire containing different grain size deoxidier
Method, it is characterised in that：Include the following steps：
(1) mild-carbon steel strip is rolled into U-shaped using molding roller, then by dust feeder by the powder of medicine core according to welding wire
52~56wt% of gross weight is added in U-lag；
(2) U-lag is healed up, makes medicine core package wherein, by wire drawing die, by road drawing, tube reducing, finally reach its diameter
To 2.8~4.2mm, final products are obtained.
Each component main function is as follows in above-mentioned medicine core：
High carbon ferro-chrome：Form Cr7C3, Cr23C6, Cr3The carbide of the chromium such as C；And the transition C into matrix.
Graphite：Deoxidation, gas making (CO) reduce stomata sensitivity；C element is provided.
Cellulose：Deoxidation, gas making enhance self-shield effect.
Almag：Deoxidation, fixed nitrogen (invade the N in welding metal) from air, enhance self-shield effect.
Silicomangan：Deoxidation enhances self-shield effect；Transition alloy elements Mn and elements Si.
By in above-mentioned technical proposal and medicine core each component effect summary it is understood that the present invention due to simultaneously in medicine core
Varigrained deoxidier is added, specifically including varigrained graphite, cellulose, almag and silicomangan.Whole
In a welding process, the molten drop stage of existing extreme temperatures, and the molten bath stage for having temperature slightly lower, whichever is required in the stage
It effectively avoids air pollution that from just obtaining qualified welding deposited metal, is found by substantial amounts of engineer testing early period, by not
The above-mentioned medicine core component of one-size can be obviously improved the self-shield effect of welding wire, this is because varigrained powder has not
Same oxidation activity.
By component particle size control chemical metallurgy reactivity new approaches, added in medicine core 200 superfine mesh graphite,
Cellulose, almag and silicomangan carry out effective precedent desoxydation using it in the welding temperature rise period, while in medicine core
Addition thicker 60 mesh graphite, cellulose, almag and silicomangan, are allowed to be retained in molten drop hot stage and molten bath rank
Section, can also carry out effective deoxidation gas making, can particularly ensure to weld the deoxidation effect in molten bath stage in later stage, so as to ensure
It is heated in entire welding wire, melts, forming molten drop, droplet transfer, form molten bath and start the Welding Metallurgy whole process of solidification to be provided with
Good self-shield effect, it is achieved thereby that this welding wire remains able in the case of no any mineral powder slag former of addition
Possess good welding technological properties and welding metal shaping surface, it is noted that the combination of other different thicknesses granularities, only
The technique effect is that by, also falls into the design of the present invention.
Advantageous effect：Compared with prior art, the present invention has the following advantages：
(1) present invention controls the new approaches of chemical metallurgy reactivity by component particle size, is respectively combined and adds in medicine core
Add 200 superfine mesh and thicker 60 mesh graphite, cellulose, almag and silicomangan, be effectively ensured entire welding wire by
Heat, fusing, formed molten drop, the droplet transfer, formed molten bath and start solidification Welding Metallurgy whole process be provided with good self-shield
Effect, it is achieved thereby that this welding wire remains able to possess good weldering in the case of no any mineral powder slag former of addition
Connect processing performance.
(2) flux-cored wire pore-free of the invention, splashings is small, figuration of bead is good, homogenization degree height, overlay cladding
Case hardness is uniform, and different welding wire average hardness are in 60~65HRC scopes.Wearability is 20~35 times of Q235.
(3) preparation method provided by the invention is simply repeatable, prepared welding wire when in use welding bead surface substantially without
Slag, multilayer welding manufacture of low cost without scarfing cinder, welding wire.
Specific embodiment
The present invention is further explained with reference to embodiment.Because of understanding, following embodiments are in order to more preferable
Explanation the present invention, without form limiting the scope of the present invention.Wherein, the high carbon chromium used in following examples
Iron phosphorus content is 9.0~9.5wt%, and chrome content is 62~72wt%, remaining is iron；The almag aluminum content for 47~
53wt%, remaining is magnesium；The silicomangan silicon content is 47~53wt%, remaining is manganese.
Embodiment 1
A kind of inexpensive self-protection flux-cored wire containing different grain size deoxidier, including mild-carbon steel strip and medicine core, medicine core
It is filled in steel band, drug core component is prepared by following quality：Including mild-carbon steel strip and medicine core, flux cored filler in steel band,
Drug core component is prepared by following quality：The 80 mesh high carbon ferro-chromes of 75g, the different grain size deoxidier of 10g, the 80 mesh iron of 15g
Powder.Wherein, the mechanical mixture that deoxidier is made of varigrained graphite, cellulose powder, almag and silicomangan
Object, specially：The 60 mesh graphite of 1g, the 200 mesh graphite of 1.5g, the 60 mesh cellulose powders of 1g, the 200 mesh cellulose powders of 0.5g
End, the 60 mesh almags of 1g, the 200 mesh almags of 1g, the 60 mesh silicomangans of 2g, the 200 mesh silicomangans of 2g.By institute
Various powder is taken to insert in mixed powder machine, are mixed 40 minutes, then mixed-powder are added in the H08A carbon steels of 21 × 0.5mm of U-shaped
In steel band slot, filling rate 56%.U-lag is healed up again, makes medicinal powder package wherein.Then it is made respectively by a diameter of
One or more in the wire drawing die of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm by road drawing, tube reducing, finally obtain straight
Footpath is the product of 2.8~4.2mm.Welding current is 280~420A, and weldingvoltage is 30~42V, speed of welding 0.4m/
Min, interlayer temperature control is at 150~250 DEG C, 3 layers of built-up welding.Overlaying shaping, hardness and wearability are shown in Table 1.
Embodiment 2
A kind of inexpensive self-protection flux-cored wire containing different grain size deoxidier, including mild-carbon steel strip and medicine core, medicine core
It is filled in steel band, drug core component is prepared by following quality：Including mild-carbon steel strip and medicine core, flux cored filler in steel band,
Drug core component is prepared by following quality：The 80 mesh high carbon ferro-chromes of 62g, the different grain size deoxidier of 25g, the 80 mesh iron of 13g
Powder.Wherein, the mechanical mixture that deoxidier is made of varigrained graphite, cellulose powder, almag and silicomangan
Object, specially：The 60 mesh graphite of 3g, the 200 mesh graphite of 2.5g, the 60 mesh cellulose powders of 2.5g, the 200 mesh cellulose powders of 1g
End, the 60 mesh almags of 3g, the 200 mesh almags of 3g, the 60 mesh silicomangans of 5g, the 200 mesh silicomangans of 5g.By institute
Various powder is taken to insert in mixed powder machine, are mixed 40 minutes, then mixed-powder are added in the H08A carbon steels of 21 × 0.5mm of U-shaped
In steel band slot, filling rate 52%.U-lag is healed up again, makes medicinal powder package wherein.Then it is made respectively by a diameter of
One or more in the wire drawing die of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm by road drawing, tube reducing, finally obtain straight
Footpath is the product of 2.8~4.2mm.Welding current is 280~420A, and weldingvoltage is 30~42V, speed of welding 0.4m/
Min, interlayer temperature control is at 150~250 DEG C, 3 layers of built-up welding.Overlaying shaping, hardness and wearability are shown in Table 1.
Embodiment 3
A kind of inexpensive self-protection flux-cored wire containing different grain size deoxidier, including mild-carbon steel strip and medicine core, medicine core
It is filled in steel band, drug core component is prepared by following quality：Including mild-carbon steel strip and medicine core, flux cored filler in steel band,
Drug core component is prepared by following quality：The 80 mesh high carbon ferro-chromes of 68g, the different grain size deoxidier of 17.8g, the 80 of 14.2g
Mesh iron powder.Wherein, the machinery that deoxidier is made of varigrained graphite, cellulose powder, almag and silicomangan
Mixture, specially：The 60 mesh graphite of 2g, the 200 mesh graphite of 2g, the 60 mesh cellulose powders of 2g, the 200 mesh celluloses of 0.8g
Powder, the 60 mesh almags of 2g, the 200 mesh almags of 2g, the 60 mesh silicomangans of 4g, the 200 mesh silicomangans of 3g.It will
Various powder is taken to insert in mixed powder machine, are mixed 40 minutes, then mixed-powder are added in the H08A carbon of 21 × 0.5mm of U-shaped
In steel steel band slot, filling rate 54%.U-lag is healed up again, makes medicinal powder package wherein.Then it is made respectively by a diameter of
One or more in the wire drawing die of 4.2mm, 3.8mm, 3.5mm, 3.2mm, 2.8mm by road drawing, tube reducing, finally obtain straight
Footpath is the product of 2.8~4.2mm.Welding current is 280~420A, and weldingvoltage is 30~42V, speed of welding 0.4m/
Min, interlayer temperature control is at 150~250 DEG C, 3 layers of built-up welding.Overlaying shaping, hardness and wearability are shown in Table 1.
Hardness listed by table 1 uses HR-150A Rockwell apparatuses, and load 150Kg takes each test specimens 5 point hardnesses, counts
Calculate average hardness value.Wear test uses MLS-225 type wet type rubber foot wheel abrasion testers.
The overlay cladding of each embodiment is cut into five sizes as 57 × 25 × 6mm Wear specimens.Wear test parameter is as follows：
Rubber wheel diameter：178mm, rubber wheel speed：240 revs/min, rubber wheel hardness：70 (Shao Er hardness), load：10Kg, rubber wheel
Revolution：1000 turns of pre-grinding, formal test turn 1000 turns, abrasive material：The quartz sand of 40~70 mesh.The wear-resisting property of deposited metal is with just
The weight loss of formula abrasion is weighed.It is clear in ultrasonic wave in testing forward and backward every time by sample and inserting and fill the beaker of acetone soln
It washes in instrument and cleans 3~5 minutes, record of weighing after dry.Experiment Q235 steel sample as a comparison, contrast piece weight loss and measuring piece
Relative wear resistance ε of the ratio between the weight loss as built-up welding sample.
1 each embodiment deposited metal hardness and wear resistance of table
Above example is to play the role of illustrating example to the technical concept of the present invention, can not limit the present invention with this
Protection domain, those skilled in the art modify and are equal in the spirit and scope for not departing from technical solution of the present invention
It replaces, should all fall within the scope and spirit of the invention.
Claims (10)
1. a kind of inexpensive self-protection flux-cored wire containing different grain size deoxidier, including mild-carbon steel strip and medicine core, the medicine
Core is filled in mild-carbon steel strip, which is characterized in that the medicine core includes the component of following mass percent：The height of 62~75wt%
Carbon ferrochrome, 10%~25% deoxidier, surplus are iron powder, wherein, the deoxidier is graphite, cellulose powder, magnalium close
The mechanical impurity that gold and silicomangan are formed, the graphite, cellulose powder, almag and silicomangan are respectively by extremely
Few two kinds of different grain sizes composition, the medicine core account for 52~56wt% of Quality of Final Welding Wire.
2. the inexpensive self-protection flux-cored wire according to claim 1 containing different grain size deoxidier, it is characterised in that：
The varigrained graphite is added in combination by 60 mesh graphite and 200 mesh graphite, the addition of the 60 mesh graphite
Be equivalent to 1~3wt% of medicine core quality, the addition of the 200 mesh graphite be equivalent to the medicine core quality 1.5~
2.5wt%.
3. the inexpensive self-protection flux-cored wire according to claim 1 containing different grain size deoxidier, it is characterised in that：
The varigrained cellulose powder is added in combination by 60 mesh cellulose powders and 200 mesh cellulose powders, institute
The addition for stating 60 mesh cellulose powders is equivalent to 1~2.5wt% of medicine core quality, the addition of the 200 mesh cellulose powder
Amount is equivalent to 0.5~1wt% of the medicine core quality.
4. the inexpensive self-protection flux-cored wire according to claim 1 containing different grain size deoxidier, it is characterised in that：
The varigrained almag is added in combination by 60 mesh almags and 200 mesh almags, 60 mesh
The addition of almag and 200 mesh almags is equivalent to 1~3wt% of the medicine core quality.
5. the inexpensive self-protection flux-cored wire according to claim 1 containing different grain size deoxidier, it is characterised in that：
The varigrained silicomangan is added in combination by 60 mesh silicomangans and 200 mesh silicomangans, 60 mesh
The addition of silicomangan and 200 mesh silicomangans is equivalent to 2~5wt% of the medicine core quality.
6. the inexpensive self-protection flux-cored wire according to claim 1 containing different grain size deoxidier, it is characterised in that：
The grain size of high carbon ferro-chrome and iron powder component in the medicine core is equal to 80 mesh.
7. the inexpensive self-protection flux-cored wire according to claim 1 containing different grain size deoxidier, it is characterised in that：
The high carbon ferro-chrome phosphorus content is 9.0~9.5wt%, and chrome content is 62~72wt%, remaining is iron；The almag
Aluminum content is 47~53wt%, remaining is magnesium；The silicomangan silicon content is 47~53wt%, remaining is manganese.
8. the inexpensive self-protection flux-cored wire according to claim 1 containing different grain size deoxidier, it is characterised in that：
Mild-carbon steel strip thickness × the width is 0.5 × 21mm.
9. the inexpensive self-protection flux-cored wire according to claim 1 containing different grain size deoxidier, it is characterised in that：
Any one in a diameter of 2.8mm, 3.2mm, 3.5mm, 3.8mm and 4.2mm of the welding wire.
10. a kind of inexpensive self-protection flux-cored wire for containing different grain size deoxidier such as claim 1-9 any one of them
Preparation method, it is characterised in that：Include the following steps：
(1) mild-carbon steel strip is rolled into U-shaped using molding roller, then by dust feeder by the powder of medicine core according to welding wire gross weight
52~56wt% be added in U-lag；
(2) U-lag is healed up, makes medicine core package wherein, by wire drawing die, by road drawing, tube reducing, finally reach its diameter
2.8~4.2mm obtains final products.
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| CN201610609858.7A CN106112305B (en) | 2016-07-28 | 2016-07-28 | A kind of inexpensive self-protection flux-cored wire containing different grain size deoxidier and preparation method thereof |
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| CN201610609858.7A CN106112305B (en) | 2016-07-28 | 2016-07-28 | A kind of inexpensive self-protection flux-cored wire containing different grain size deoxidier and preparation method thereof |
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| CN107984116A (en) * | 2017-12-07 | 2018-05-04 | 佛山早稻田科技服务有限公司 | A kind of environmental protection soldering tin bar |
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| CN106112305A (en) | 2016-11-16 |
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