CN106736049B - A kind of good seamless flux-cored wire of the capability of welding vertically upwards - Google Patents
A kind of good seamless flux-cored wire of the capability of welding vertically upwards Download PDFInfo
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- CN106736049B CN106736049B CN201611073243.3A CN201611073243A CN106736049B CN 106736049 B CN106736049 B CN 106736049B CN 201611073243 A CN201611073243 A CN 201611073243A CN 106736049 B CN106736049 B CN 106736049B
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- welding
- cored wire
- medicine core
- seamless flux
- core powder
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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
-
- 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
- B23K35/40—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
- 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
- B23K2035/408—Filled tubular wire or rods with welded longitudinal seam
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
A kind of good seamless flux-cored wire of the capability of welding vertically upwards, it is related to field of welding material, it is made of mild steel crust and medicine core powder, by mass percentage, medicine core powder is mixed by following components: rutile 35%-50%, dehydration feldspar 2%-4%, almag 4%-6%, ferrotianium 2%-3%, low-carbon ferromanganese 9%-14%, zircon sand 1%-2%, aluminium oxide 3%-8%, quartz 4%-6%, sodium fluoride 0.5%-1%, surplus iron powder.Seamless flux-cored wire of the invention adds medicine core powder using on-line synchronous, the crust steel band after adding medicine core powder, after roll molding and soldering, then annealed, tube reducing and copper facing, and then prepare seamless flux-cored wire.Welding wire stable mechanical property of the invention, diffusible hydrogen is low, and anti-moisture absorption is strong, and antirust to have excellent performance, welding usability is good, can all-position welding, be especially suitable for vertical position of welding welding, can be used for D36 level steel plate welding.
Description
Technical field
The present invention relates to field of welding material, and in particular to a kind of good seamless flux-cored wire of the capability of welding vertically upwards.
Background technique
In recent years, China's steel and wlding are transitioned into from high speed development eliminates the backward production facilities, innovates driving transition and upgrade
Stable growth stage, the structural adjustment of welding material product and product up-gradation process will obviously be accelerated, in ocean engineering, naval vessel system
It makes, in the technical fields such as bridge, since welding engineering amount is big, the demand to automatic high-efficiency welding method is more urgent.
Since flux-cored wire can be realized continuous automatic welding, automation, the efficient development of welding technique are advanced, and
Flux-cored wire ingredient is easily adjusted, therefore is widely applied.Seamless flux-cored wire is in addition to having the advantages that common flux-cored wire, also
With following remarkable advantage: 1. in welding wire manufacture, storage and use process, medicinal powder is nonhygroscopic, and deposited metal can reach when welding
Ultralow diffusible hydrogen is horizontal, and it is low to crack tendency；2. welding wire surface can copper facing, good conductivity, welding arc stablility, welding procedure
It has excellent performance；3. welding wire is rigidly good, substantially distortionless, it is not likely to produce welding defect, weldquality is good.Based on the above advantage, nothing
Flux-cored wire is stitched in the higher steel construction of weld strength, is used especially for the more demanding ship of weldquality, ocean engineering
When the welding of high-strength steel, there is very big technical advantage.
There is a large amount of fillet welds in shipbuilding, and perhaps multipoint weld seam is in non-flat welding position and sets and vertical position welding
Position is more, so all positon craftsmanship especially the capability of welding vertically upwards to welding wire proposes test.Currently, most of medicine core welderings
Silk can meet the requirement used, but as the thickness of ship plate reduces, welding bead is formed not when swing is not added in welding wire vertical position welding
Good, weldering larynx is excessive, and the stress at toe of weld position will be caused to concentrate, brought to structure potentially hazardous.China Patent Publication No.
Seamless flux-cored wire described in CN105014259A is applied to soldering field, institute in China Patent Publication No. CN105057925A
The seamless flux-cored wire stated is metal powder core pattern, and cannot be used for all-position welding.And China Patent Publication No.
Flux-cored wire described in the patents such as CN102528317A, CN102009287A is seamed welding wire, and is applied to electro-gas (enclosed) welding.Through
Retrieval finds no energy all-position welding relevant to the application and the good seamless flux-cored wire of the capability of welding vertically upwards.
Summary of the invention
The present invention is directed to propose a kind of good seamless flux-cored wire of the capability of welding vertically upwards, CO 2 gas-shielded
Under, welding wire stable mechanical property, diffusible hydrogen is low, and anti-moisture absorption is strong, and antirust to have excellent performance, welding usability is good, can all positon
Welding is especially suitable for vertical position of welding welding, can be used for the welding of D36 level steel plate.
To achieve the above object, the technical solution of the present invention is as follows: a kind of good seamless flux-cored wire of the capability of welding vertically upwards, by
Mild steel crust and medicine core powder composition, by mass percentage, medicine core powder is mixed by following components: rutile 35%-50%,
Be dehydrated feldspar 2%-4%, almag 4%-6%, ferrotianium 2%-3%, low-carbon ferromanganese 9%-14%, zircon sand 1%-2%, aluminium oxide 3%-8%,
Quartzy 4%-6%, sodium fluoride 0.5%-1%, surplus iron powder.
Al, Mg mass ratio are 1:1 in the almag, and Ti, Fe mass ratio are 1:4, Mn, Fe in low-carbon ferromanganese in ferrotianium
Mass ratio is 4:1.
The preparation process of seamless flux-cored wire of the invention: medicine core powder is added using on-line synchronous, after adding medicine core powder
Crust steel band, after roll molding and soldering, then annealed, tube reducing and copper facing, and then prepare seamless flux-cored wire.
Seamless flux-cored wire of the invention, the diameter of final products welding wire are 1.2 mm, 1.6 mm, the filling rate of medicine core powder
For 14%-16%.
Heretofore described seamless flux-cored wire uses titania-type flux-cored welding wire slag system, in main constituent rutile
TiO2Slag setting temperature is high, TiO2The more slag of content has become short slag, has adapted to all-position welding close to lenticular.Gold
Red stone is main slag former and arc stabilizer, the fusing point and viscosity of adjustable slag, improve weld seam molding and de- slag, add
Enter amount is advisable with 35%-50%.
The dehydration feldspar being added in the medicine core powder of seamless flux-cored wire of the present invention is mainly organized as Na2O、K2O、
SiO2、Al2O3, Na therein2O and K2The stability of welding arc can be improved in O, plays the role of stabilising arc.On the other hand, therein
SiO2And Al2O3The viscosity of adjustable molten iron and slag, is conducive to all-position welding.But additional amount too it is high can cause flue dust and
It splashes and increases.Therefore the additional amount of dehydration feldspar should control between 2%-4%.
Almag main purpose is added in the medicine core powder of seamless flux-cored wire of the present invention to be deoxidation and then mention
High weld metal mechanical property.The adjustable welding wire process of deoxidation products simultaneously, because the part deoxidation products of aluminium can be with
The form of field trash enters in weld metal the hardness and strength for improving steel, partially enters in slag and adjusts the viscosity of slag.Magnesium
Deoxidation products almost all enter slag, the fusing point that slag can be improved makes welding wire can be adapted for all-position welding, especially suitable
Close vertical position welding.Deoxidation deficiency is easy so that weld metal too high oxygen level, influences Weld Performance when almag additional amount is too low.But
The plasticity and toughness of weld seam will be significantly reduced when aluminium is excessively high.Therefore, the additional amount of almag is controlled in 4%-6%.
Ferrotianium is added in the medicine core powder of rutile-type seamless flux-cored wire of the invention, main purpose is deoxidation.In addition,
Titanyl compound is considered can be used as stronger hydrogen trap, can solidify a large amount of hydrogen, so that deposited metal diffusible hydrogen be effectively reduced
Content.Finally, due to the affinity of Ti and oxygen is very big, the Ti in weld seam in the form of molecule oxide (TiO,
Ti2O3、TiO2) Dispersed precipitate is in weld seam, the very easy forming core core as acicular ferrite advantageously forms needle-shaped iron element
Body tissue, to improve the toughness of weld metal.Since the addition of ferrotianium can aggravate the severe degree of melt tank reaction, additional amount mistake
Height will will affect welding usability, influence all-position welding, therefore the additional amount of ferrotianium is preferably controlled in 2%-3%.
Low-carbon ferromanganese is added in the medicine core powder of seamless flux-cored wire of the present invention, while main purpose is deoxidation
The tensile strength and toughness of weld metal are improved, meanwhile, the SiO in deoxidation products and slag2And TiO2Combination product is produced, it can
Guarantee deoxidation effect.The too low weld metal intensity of low-carbon ferromanganese content is too low, and too high levels cause weld metal intensity to cross high-ductility
Property decline.Therefore the additional amount of low-carbon ferromanganese is 9%-14%.
Zircon sand is added in the medicine core powder of seamless flux-cored wire of the present invention, main purpose is that improving weld seam takes off
Slag, zircon sand main component are ZrO2And SiO2.Wherein ZrO2With negative linear expansion coefficient, volume change in cooling procedure,
Smoothly removing to skull has positive effect, and ZrO2Adjustable slag bath viscosity improves appearance of weld, the technique for guaranteeing weld seam
Property.Thus the additional amount of zircon sand is advisable for 1%-2%.
Aluminium oxide is added in the medicine core powder of seamless flux-cored wire of the present invention, main purpose is that adjusting slag glues
Degree, improves the mobility and surface tension of molten slag.Improve welding wire process, guarantee the craftsmanship of welding wire all-position welding,
It more can guarantee that welding wire vertical fillet weld forms, it is excessive that additional amount can excessively make the viscosity of slag and mobility increase, and influences to weld
Silk craftsmanship.Therefore the additional amount of aluminium oxide is advisable with 3%-8%.
Quartz is added in the medicine core powder of seamless flux-cored wire of the present invention, main group becomes SiO2, main purpose tune
The viscosity and mobility of whole liquid slag bath, ensure the craftsmanship of welding wire.SiO during high temperature is to low temperature simultaneously2It can undergo
Phase transition process, and be conducive to skull removing also with volume change while phase transformation.Therefore quartzy additional amount is with 4%-6%
It is advisable.
Sodium fluoride is added in the medicine core powder of seamless flux-cored wire of the present invention, is mainly currently adjustment arc stiffness,
Make welding arc in welding, suitable fusion penetration can be especially obtained in vertical position welding.Addition excessively will affect arc stability,
Therefore the additional amount of sodium fluoride is advisable with 0.5%-1%.
The utility model has the advantages that
After technical solution of the present invention is implemented, manufactured flux-cored wire is had the following characteristics that
1), welding wire process is good, under suitable technological specification, can be realized all-position welding；
2), welding wire the capability of welding vertically upwards is good, and vertical fillet weld welds larynx thickness and is less than 4mm；
3), deposited metal stable mechanical property, crack resistance is good, and diffusible hydrogen is low, and welding wire anti-moisture absorption is strong.
Specific embodiment
The constituent content designed according to the present invention has prepared 3 kinds of medicine core powders, using mild-carbon steel strip as welding wire crust,
Seamless flux-cored wire is prepared according to preparation process of the present invention, is respectively labeled as T1, T2, T3, wherein T1, T3 gage of wire
For 1.2mm, T2 diameter 1.6mm.The specific quality proportioning of each embodiment medicine core powder is shown in Table 1, and welding wire filling rate is shown in Table 2, each to implement
Used protection gas is carbon dioxide when example welding, it should be noted that the invention is not limited to these embodiments.
The composition (wt%) of the medicine core powder of 1 seamless flux-cored wire of the embodiment of the present invention of table
In table 1, in raw material of the present invention, Al, Mg mass ratio are 1:1, Ti, Fe mass in ferrotianium in almag
Than for 1:4, Mn, Fe mass ratio are 4:1 in low-carbon ferromanganese.
The filling rate (%) of the medicine core powder of 2 embodiment seamless flux-cored wire of table
The chemical component and performance that mild-carbon steel strip used in flux-cored wire is prepared in embodiment are respectively as shown in table 3, table 4.
The chemical component (wt%) of 3 seamless flux-cored wire of the embodiment of the present invention of table selection steel band
The performance of 4 seamless flux-cored wire of the embodiment of the present invention of table selection steel band
Embodiment deposited metal composition and mechanical property are as shown in table 5, table 6.
The chemical component of 5 seamless flux-cored wire deposited metal of the embodiment of the present invention of table
The mechanical property of 6 seamless flux-cored wire deposited metal of the embodiment of the present invention of table
For the capability of welding vertically upwards for detecting embodiment, larynx thickness is welded such as to weld larynx thickness as content, vertical fillet weld is judged
Shown in table 7.
7 embodiment seamless flux-cored wire of table welds larynx thickness
Claims (3)
1. a kind of good seamless flux-cored wire of the capability of welding vertically upwards, is made of, it is characterised in that: press mild steel crust and medicine core powder
Mass percent meter, medicine core powder are mixed by following components: rutile 35%-50%, dehydration feldspar 2%-4%, almag 4%-
6%, ferrotianium 2%-3%, low-carbon ferromanganese 9%-14%, zircon sand 1%-2%, aluminium oxide 3%-8%, quartz 4%-6%, sodium fluoride 0.5%-1%,
Surplus iron powder, Al, Mg mass ratio are 1:1 in the almag, and Ti, Fe mass ratio are 1:4 in ferrotianium, Mn in low-carbon ferromanganese,
Fe mass ratio is 4:1.
2. a kind of good seamless flux-cored wire of the capability of welding vertically upwards as described in claim 1, it is characterised in that: the medicine core powder
Filling rate be 14%-16%.
3. a kind of preparation method of the good seamless flux-cored wire of the capability of welding vertically upwards as described in claim 1, it is characterised in that:
After medicine core powder is added to mild-carbon steel strip crust, through roll molding and soldering, then annealed, tube reducing and copper facing, and then prepare
Seamless flux-cored wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611073243.3A CN106736049B (en) | 2016-11-29 | 2016-11-29 | A kind of good seamless flux-cored wire of the capability of welding vertically upwards |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611073243.3A CN106736049B (en) | 2016-11-29 | 2016-11-29 | A kind of good seamless flux-cored wire of the capability of welding vertically upwards |
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| Publication Number | Publication Date |
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| CN106736049A CN106736049A (en) | 2017-05-31 |
| CN106736049B true CN106736049B (en) | 2019-04-19 |
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| CN108406159B (en) * | 2018-01-18 | 2020-06-30 | 洛阳双瑞特种合金材料有限公司 | High-toughness titanium-alkali seamless flux-cored wire suitable for all-position welding |
| CN111055040B (en) * | 2019-10-29 | 2021-11-30 | 中国船舶重工集团公司第七二五研究所 | Thermal crack resistant seamless flux-cored wire under large restraint condition |
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| CN111761253B (en) * | 2020-06-22 | 2022-04-19 | 中国船舶重工集团公司第七二五研究所 | Seamless flux-cored wire for all-position welding of austenite ultralow-temperature steel and preparation method thereof |
| CN112108791B (en) * | 2020-08-12 | 2022-03-11 | 中国船舶重工集团公司第七二五研究所 | Alkaline seamless flux-cored wire for improving low-temperature toughness of low-alloy high-strength steel welding joint |
| CN118081187B (en) * | 2024-04-24 | 2024-07-16 | 江苏双金新材料有限公司 | Alloy welding wire preparation machine |
| CN118237801A (en) * | 2024-05-29 | 2024-06-25 | 成都先进金属材料产业技术研究院股份有限公司 | Titanium alloy seamless flux-cored wire and preparation method thereof |
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Effective date of registration: 20210122 Address after: No. 169, Binhe South Road, Luolong District, Luoyang City, Henan Province Patentee after: NO.725 RESEARCH INSTITUTE OF CHINA SHIPBUILDING INDUSTRY Corp. Address before: 471000 No.20, Yanguang Road, Luoyang hi tech Development Zone, Luoyang City, Henan Province Patentee before: LUOYANG SHUANGRUI SPEICAL ALLOY MATERIAL Co.,Ltd. |