CN106736001A - High tenacity flux-cored wire for electrogas arc welding - Google Patents
High tenacity flux-cored wire for electrogas arc welding Download PDFInfo
- Publication number
- CN106736001A CN106736001A CN201611153536.2A CN201611153536A CN106736001A CN 106736001 A CN106736001 A CN 106736001A CN 201611153536 A CN201611153536 A CN 201611153536A CN 106736001 A CN106736001 A CN 106736001A
- Authority
- CN
- China
- Prior art keywords
- medicine core
- cored wire
- iron powder
- flux
- arc welding
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/3073—Fe as the principal constituent with Mn as next major 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
- B23K35/02—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
Abstract
The present invention proposes a kind of high tenacity flux-cored wire for electrogas arc welding, including mild steel crust and medicine core, is calculated according to percetage by weight, and on the basis of medicine core gross weight, the component of the medicine core is：Fluorite 3.5~6.5%, potassium titanate 4~8%, aluminium powder 5~10%, graphite 3~6%, molybdenum-iron powder 1~3%, silicomangan 15~30%, silica 1 0~15%, ferrotianium 6~10%, magnesia 2~6%, manganese oxide 2~6%, balance of iron powder；The filling rate of the medicine core is 30~40%.The flux-cored wire has that arc stability is good, splashes less, flue dust is small, de- slag easily, weld seam positive and negative forming, restarting is functional, fully meets the demanding criteria high of electro-gas (enclosed) welding.
Description
Technical field
The invention belongs to technical field of welding materials, and in particular to a kind of high tenacity flux-cored wire for electrogas arc welding.
Background technology
Electro-gas (enclosed) welding is a kind of efficient welding method, and electro-gas (enclosed) welding is by common gas metal-arc welding and electroslag welding
A kind of melting pole gas shielded arc welding method for developing and being formed.Its welding efficiency and welding quality are higher, main application
In the cut deal welding of the Shell Plate of ship, the bridge box web and large-scale storage tank side plate of corresponding size are can also be applied to
The welding of cut deal.
With social economy's rapid growth, Shipping industry is prosperous, and high-toughness high-strength is welded into development priority,
Electro-gas (enclosed) welding has very big development space as a kind of efficient welding method.But the welding wire researched and produced within Chinese territory at present
Usually there is the situation of welding mechanics unstable properties, processing performance can not meet the demand high of electro-gas (enclosed) welding.
The use of current all electro-gas (enclosed) welding flux-cored wires all dependence on import substantially, market is by major company of developed country ridge
It is disconnected so that electro-gas (enclosed) welding is with high costs, it is unfavorable for popularization.But with the development of China's Shipbuilding Industry and oil reserve industry, compel
Be essential the electro-gas (enclosed) welding welding wire for wanting a kind of low cost, welding mechanics effect good.
The content of the invention
The present invention proposes a kind of high tenacity flux-cored wire for electrogas arc welding, and the flux-cored wire has arc stability good, winged
Splash less, flue dust is small, de- slag is easy, weld seam positive and negative forming, restarting is functional, fully meets the demand high of electro-gas (enclosed) welding
Standard.
The technical proposal of the invention is realized in this way：
A kind of high tenacity flux-cored wire for electrogas arc welding, including mild steel crust and medicine core, calculate according to percetage by weight,
On the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 3.5~6.5%, potassium titanate 4~8%, aluminium powder 5~10%, graphite 3~6%, molybdenum-iron powder 1~3%, silicomanganese
Alloy 15~30%, silica 1 0~15%, ferrotianium 6~10%, magnesia 2~6%, manganese oxide 2~6%, balance of iron
Powder；The filling rate of the medicine core is 30~40%.
Further, the content of manganese is 65~75% in the manganese-silicon.
Further, calculated according to percetage by weight, on the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 5%, potassium titanate 5%, aluminium powder 8%, graphite 5%, molybdenum-iron powder 2%, silicomangan 26%, silica
10%th, ferrotianium 8%, magnesia 4%, manganese oxide 4%, balance of iron powder；The filling rate of the medicine core is 31.5~39%.
Further, calculated according to percetage by weight, on the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 6.5%, potassium titanate 4%, aluminium powder 10%, graphite 6%, molybdenum-iron powder 1%, silicomangan 30%, silica
10%th, ferrotianium 6%, magnesia 6%, manganese oxide 6%, balance of iron powder.
Further, calculated according to percetage by weight, on the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 3.5%, potassium titanate 8%, aluminium powder 5%, graphite 4%, molybdenum-iron powder 1%, silicomangan 21%, silica
12%th, ferrotianium 8%, magnesia 3%, manganese oxide 3%, balance of iron powder.
Further, a diameter of 1.6mm of flux-cored wire.
Further, the mild steel crust includes following components, in terms of the percentage by weight of whole welding wires, respectively：
C：0.01-0.10%；Mn：0.1-0.4%；Si：0.01-0.03%；S：0.005-0.015%；P：0.005-
0.015%；Balance of iron.
The method for preparing high tenacity flux-cored wire for electrogas arc welding recited above, using following steps：Will be each in medicine core
After components in certain proportion is well mixed, medicine core is placed on mild steel crust, by wrapping up or rolling into silk, be then carefully pulled to corresponding
Specification obtains final product the high tenacity flux-cored wire for electrogas arc welding.
Preferably, welding parameter of the high tenacity flux-cored wire for electrogas arc welding in vertical electro-gas is：Voltage
Scope is between 32~41V, current range is 340~410A.
Preferably, the bevel angle of high tenacity flux-cored wire for electrogas arc welding welding requirements in vertical electro-gas
It it is 22.5 DEG C, underside groove gap is 5 ± 1mm, 17 ± 1mm of frontal clearance.
Aluminium powder：Aluminium is strong deoxidier, and the oxygen content to controlling weld metal plays an important roll, while stabilising arc can also be played
Effect；But weld fumes can be increased during too high levels, in the healthy unfavorable of welder.
Molybdenum-iron：Molybdenum refine weld metal crystallite dimension, weld metal intensity can be significantly improved, but it is too high can influence weld seam gold
Category toughness.In order to control to be transitioned into the molybdenum content of weld metal, molybdenum-iron is mainly derived from.It is strong that Mo can significantly improve weld metal
Degree, is mainly derived from molybdenum-iron.Molybdenum-iron accounts for the 0.1~0.3% of welding wire gross weight.But weld metal toughness can be influenceed more than 0.3%,
It is little to its intensity effect during less than 0.1%.
Iron powder：Adding iron powder to improve welding efficiency and provide a small amount of oxygen in medicine core is used for stabilising arc, high in order to ensure
Deposition efficiency, it is mainly derived from reduced iron powder or atomized iron powder.
SiO2It is a kind of acidic materials, reduces basicity, anti-stomata ability, SiO can be influenceed2Slag making is participated in, the solidifying of slag is adjusted
Solid point, surface tension and cinder high-temperature viscosity, the control to appearance of weld are extremely important.
Magnesia and manganese oxide, use in formula, improve the raising slag temperature of slag surface tension force, play improvement weldering
The type of being seamed into plays a part of stabilising arc, slag making.
Beneficial effects of the present invention：
1st, high tenacity flux-cored wire for electrogas arc welding of the invention, its welding technological properties is good, and arc stability is good, winged
Splash less, flue dust is small, de- slag is easy, weld seam positive and negative forming, restarting is functional, fully meets the demand high of electro-gas (enclosed) welding
Standard.
2nd, welding wire has good mechanical property, and Toughness of Deposited Metal is good, and tensile strength is more than 620MPa, and elongation percentage is big
90J is reached in 30%, -20 DEG C of impact absorbing energy.
Specific embodiment
Embodiment 1
A kind of high tenacity flux-cored wire for electrogas arc welding, including mild steel crust and medicine core, calculate according to percetage by weight,
On the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 5%, potassium titanate 5%, aluminium powder 8%, graphite 5%, molybdenum-iron powder 2%, silicomangan 26%, silica
10%th, ferrotianium 8%, magnesia 4%, manganese oxide 4%, balance of iron powder；The filling rate of the medicine core is 35%.
The present embodiment welding parameter：I=340-350A, U=32-33V, gas flow 25L/min, using CO2Gas is protected
Shield, CO2Gas purity more than 99.98%, its welding wire deposited metal composition is shown in Table 1, and deposited metal mechanical property is shown in Table 2：
The deposited metal composition of table 1 (wt%)
| C | Mn | Si | S | P | Ni | Mo |
| 0.072 | 1.35 | 0.31 | 0.0082 | 0.015 | 0.015 | 0.13 |
The deposited metal mechanical property of table 2
| Tensile strength (MPa) | Yield point (MPa) | Elongation percentage (%) | - 20 DEG C of ballistic works (J) |
| 623 | 452 | 32 | 92 |
Embodiment 2
A kind of high tenacity flux-cored wire for electrogas arc welding, including mild steel crust and medicine core, calculate according to percetage by weight,
On the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 6.5%, potassium titanate 4%, aluminium powder 10%, graphite 6%, molybdenum-iron powder 1%, silicomangan 30%, silica
10%th, ferrotianium 6%, magnesia 6%, manganese oxide 6%, balance of iron powder；The filling rate of the medicine core is 32%.
Remaining is same as Example 1, and its welding wire deposited metal composition is shown in Table 3, and deposited metal mechanical property is shown in Table 4：
The deposited metal composition of table 3 (wt%)
| C | Mn | Si | S | P | Ni | Mo |
| 0.083 | 1.36 | 0.28 | 0.0082 | 0.012 | 0.014 | 0.13 |
The deposited metal mechanical property of table 2
| Tensile strength (MPa) | Yield point (MPa) | Elongation percentage (%) | - 20 DEG C of ballistic works (J) |
| 633 | 465 | 35 | 97 |
Embodiment 3
A kind of high tenacity flux-cored wire for electrogas arc welding, including mild steel crust and medicine core, calculate according to percetage by weight,
On the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 3.5%, potassium titanate 8%, aluminium powder 5%, graphite 4%, molybdenum-iron powder 1%, silicomangan 21%, silica
12%th, ferrotianium 8%, magnesia 3%, manganese oxide 3%, balance of iron powder；The filling rate of the medicine core is 40%.
Remaining is same as Example 1, and its welding wire deposited metal composition is shown in Table 5, and deposited metal mechanical property is shown in Table 6：
The deposited metal composition of table 5 (wt%)
| C | Mn | Si | S | P | Ni | Mo |
| 0.085 | 1.34 | 0.29 | 0.0081 | 0.011 | 0.013 | 0.12 |
The deposited metal mechanical property of table 6
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (6)
1. a kind of high tenacity flux-cored wire for electrogas arc welding, including mild steel crust and medicine core, it is characterised in that according to weight hundred
Fraction is calculated, and on the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 3.5~6.5%, potassium titanate 4~8%, aluminium powder 5~10%, graphite 3~6%, molybdenum-iron powder 1~3%, silicomangan
15~30%, silica 1 0~15%, ferrotianium 6~10%, magnesia 2~6%, manganese oxide 2~6%, balance of iron powder；Institute
The filling rate for stating medicine core is 30~40%.
2. high tenacity flux-cored wire for electrogas arc welding according to claim 1, it is characterised in that manganese in the manganese-silicon
Content be 65~75%.
3. high tenacity flux-cored wire for electrogas arc welding according to claim 1 and 2, it is characterised in that according to weight percent
Number is calculated, and on the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 5%, potassium titanate 5%, aluminium powder 8%, graphite 5%, molybdenum-iron powder 2%, silicomangan 26%, silica 1 0%, titanium
Iron 8%, magnesia 4%, manganese oxide 4%, balance of iron powder；The filling rate of the medicine core is 31.5~39%.
4. high tenacity flux-cored wire for electrogas arc welding according to claim 1, it is characterised in that according to percent by weight
Calculate, on the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 6.5%, potassium titanate 4%, aluminium powder 10%, graphite 6%, molybdenum-iron powder 1%, silicomangan 30%, silica 1 0%,
Ferrotianium 6%, magnesia 6%, manganese oxide 6%, balance of iron powder.
5. high tenacity flux-cored wire for electrogas arc welding according to claim 1, it is characterised in that according to percent by weight
Calculate, on the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 3.5%, potassium titanate 8%, aluminium powder 5%, graphite 4%, molybdenum-iron powder 1%, silicomangan 21%, silica 1 2%,
Ferrotianium 8%, magnesia 3%, manganese oxide 3%, balance of iron powder.
6. high tenacity flux-cored wire for electrogas arc welding according to claim 1, it is characterised in that flux-cored wire it is a diameter of
1.6mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611153536.2A CN106736001A (en) | 2016-12-14 | 2016-12-14 | High tenacity flux-cored wire for electrogas arc welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611153536.2A CN106736001A (en) | 2016-12-14 | 2016-12-14 | High tenacity flux-cored wire for electrogas arc welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106736001A true CN106736001A (en) | 2017-05-31 |
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ID=58888626
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611153536.2A Pending CN106736001A (en) | 2016-12-14 | 2016-12-14 | High tenacity flux-cored wire for electrogas arc welding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111203673A (en) * | 2020-01-13 | 2020-05-29 | 武汉铁锚焊接材料股份有限公司 | High-toughness metal powder flux-cored welding wire for argon-rich shielded welding |
| CN111203674A (en) * | 2020-01-13 | 2020-05-29 | 武汉铁锚焊接材料股份有限公司 | Metal powder flux-cored wire suitable for high-speed welding of medium plate without groove |
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Cited By (4)
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|---|---|---|---|---|
| CN111203673A (en) * | 2020-01-13 | 2020-05-29 | 武汉铁锚焊接材料股份有限公司 | High-toughness metal powder flux-cored welding wire for argon-rich shielded welding |
| CN111203674A (en) * | 2020-01-13 | 2020-05-29 | 武汉铁锚焊接材料股份有限公司 | Metal powder flux-cored wire suitable for high-speed welding of medium plate without groove |
| CN111203673B (en) * | 2020-01-13 | 2021-12-28 | 武汉铁锚焊接材料股份有限公司 | High-toughness metal powder flux-cored welding wire for argon-rich shielded welding |
| CN111203674B (en) * | 2020-01-13 | 2021-12-28 | 武汉铁锚焊接材料股份有限公司 | Metal powder flux-cored wire suitable for high-speed welding of medium plate without groove |
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Application publication date: 20170531 |