CN106695155A - Low-hydrogen high toughness acidic flux-cored wire - Google Patents
Low-hydrogen high toughness acidic flux-cored wire Download PDFInfo
- Publication number
- CN106695155A CN106695155A CN201611155007.6A CN201611155007A CN106695155A CN 106695155 A CN106695155 A CN 106695155A CN 201611155007 A CN201611155007 A CN 201611155007A CN 106695155 A CN106695155 A CN 106695155A
- Authority
- CN
- China
- Prior art keywords
- core
- iron powder
- medicine core
- high toughness
- low
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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
-
- 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
- B23K35/3073—Fe as the principal constituent with Mn as next major constituent
Abstract
The invention provides a low-hydrogen high toughness acidic flux-cored wire which comprises a low-carbon steel wrapper and a flux core, wherein the flux core comprises the following components in percentage by weight based on the total weight of the flux core: 3-7% of fluorite, 5-10% of titanium dioxide, 3-6% of graphite, 1-3% of FeMo powder, 15-30% of silicon manganese alloy, 10-15% of silicon dioxide, 6-10% of nickel, 2-6% of aluminum oxide, 2-6% of manganese oxide and the balance of iron powder; the filling rate of the flux core is 30-40%. The flux-cored wire is good in arc stability, less in splash, less in smoke dust, easy for deslagging, and further has the characteristics of high toughness and low hydrogen content.
Description
Technical field
The invention belongs to technical field of welding materials, and in particular to a kind of low hydrogen, high toughness solder wire with acidity core.
Background technology
Flux-cored wire is generally divided into acid, alkalescence, four kinds of fundamental types of metal powder type and Self-protecting.Wherein acid medicine core
Welding wire is mainly carries out slag making with rutile, alumino-silicate, belongs to TiO2-SiO2Slag system.Its welding technological properties is excellent, molten slag
Good fluidity, solidification temperature range very little, the characteristic of " have short slag ", it is adaptable to all-position welding.Due to the weldering of acid medicine core
Contain substantial amounts of rutile, alumino-silicate or other acidic oxides in the medicinal powder of silk, can improve arc stability, make electricity
Arc is soft, meanwhile, can also make the interfacial tension reduction of liquid metal and molten slag, promote molten drop particle to diminish, easily formed and sprayed
Cross.But its very big problem for existing is exactly the poor low-temperature impact toughness of weld metal, thus limits it important
Application in terms of structure welding.Therefore, people develop lime-titania type flux-cored wire again, i.e., the alkaline oxygen of volume is added in medicinal powder
Compound, improves the basicity of molten slag, the low-temperature impact toughness of weld metal has been obtained certain improvement；But what is produced therewith asks
Topic is that mode of metal transfer is changed into coarse granule transition from fine grained transition, makes welding technological properties because molten slag mobility is excessive
Deteriorate.Thus the range of application of lime-titania type flux-cored wire is also subject to a definite limitation.
At present, it is good welding technological properties the characteristics of existing solder wire with acidity core, but low-temperature impact toughness is poor, its punching
Work(standard value Akv >=27J (- 20 DEG C) is hit, diffusible hydrogen content is generally 2~14ml/100g.
As industrial equipment develops to high intensity, high tenacity and ultralow-hydrogen low, in the urgent need to a kind of welding procedure is excellent, high-ductility
The low solder wire with acidity core of property, hydrogen content, but had not yet to see such product technology.
The content of the invention
The present invention proposes a kind of low hydrogen, high toughness solder wire with acidity core, the welding wire electric arc good stability, splash less, cigarette
Dirt is small, de- slag is easy, with high tenacity, low hydrogen content feature.
The technical proposal of the invention is realized in this way：
A kind of low hydrogen, high toughness solder wire with acidity core, including mild steel crust and medicine core, calculate according to percetage by weight, with
On the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 3~7%, titanium dioxide 5~10%, graphite 3~6%, molybdenum-iron powder 1~3%, silicomangan 15~30%,
Silica 1 0~15%, nickel 6~10%, aluminum oxide 2~6%, manganese oxide 2~6%, balance of iron powder；The medicine core is filled out
It is 30~40% to fill rate.
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 4%, titanium dioxide 7%, graphite 5%, molybdenum-iron powder 2%, silicomangan 22%, silica 1 2%, nickel
8%th, aluminum oxide 4%, manganese oxide 5%, balance of iron powder；The filling rate of the medicine core is 32~38%.
Further, calculated according to percetage by weight, on the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 7%, titanium dioxide 5%, graphite 6%, molybdenum-iron powder 1%, silicomangan 16%, silica 1 0%, nickel
10%th, aluminum oxide 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%, titanium dioxide 10%, graphite 5%, molybdenum-iron powder 3%, silicomangan 28%, silica 1 5%, nickel
6%th, aluminum oxide 2%, manganese oxide 2%, 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.
Titanium dioxide：Main Function is stabilising arc, slag making, adjusts slag physical property, improves appearance of weld and reduces and splashes.
If content is too low, it is difficult to form short slag, it is unfavorable that opposition, transverse presentation put weldering；If content is too high, comprehensive mechanical property is significantly affected
Energy.
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.
Aluminum oxide is high-melting-point substances, is used in formula, improves the raising slag temperature of slag surface tension force, plays and changes
Kind appearance of weld plays a part of stabilising arc, slag making.
Manganese oxide, uses in formula, improves the raising slag temperature of slag surface tension force, plays improvement appearance of weld and rises
The effect of stabilising arc, slag making.
Beneficial effects of the present invention：
1st, low hydrogen, high toughness solder wire with acidity core of the invention, its welding technological properties is good, and arc stability is good, splashing
Less, flue dust is small, de- slag is easy, weld seam positive and negative forming, and restarting is functional, fully meets the demand mark high of electro-gas (enclosed) welding
It is accurate.
2nd, with excellent welding technological properties.Ensure that weld seam has low (the glycerine method of high intensity, high tenacity, diffusible hydrogen content
Average value 1.13ml/100g；Mercury process average value 5.8ml/100g).
3rd, welding wire has good mechanical property, and Toughness of Deposited Metal is good, and tensile strength is more than 650MPa, and elongation percentage is big
80J is reached in 30%, -20 DEG C of impact absorbing energy.
Specific embodiment
Embodiment 1
A kind of low hydrogen, high toughness solder wire with acidity core, including mild steel crust and medicine core, calculate according to percetage by weight, with
On the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 4%, titanium dioxide 7%, graphite 5%, molybdenum-iron powder 2%, silicomangan 22%, silica 1 2%, nickel
8%th, aluminum oxide 4%, manganese oxide 5%, balance of iron powder；The filling rate of the medicine core is 36%.
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 |
| 0.073 | 1.33 | 0.32 | 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) |
| 652 | 482 | 32 | 86 |
Embodiment 2
A kind of low hydrogen, high toughness solder wire with acidity core, including mild steel crust and medicine core, calculate according to percetage by weight, with
On the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 7%, titanium dioxide 5%, graphite 6%, molybdenum-iron powder 1%, silicomangan 16%, silica 1 0%, nickel
10%th, aluminum oxide 6%, manganese oxide 6%, balance of iron powder；The filling rate of the medicine core is 31%.
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 |
| 0.082 | 1.36 | 0.28 | 0.0082 | 0.011 | 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) |
| 663 | 487 | 35 | 82 |
Embodiment 3
A kind of low hydrogen, high toughness solder wire with acidity core, including mild steel crust and medicine core, calculate according to percetage by weight, with
On the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 3%, titanium dioxide 10%, graphite 5%, molybdenum-iron powder 3%, silicomangan 28%, silica 1 5%, nickel
6%th, aluminum oxide 2%, manganese oxide 2%, 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 |
| 0.084 | 1.32 | 0.28 | 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 low hydrogen, high toughness solder wire with acidity core, including mild steel crust and medicine core, 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 3~7%, titanium dioxide 5~10%, graphite 3~6%, molybdenum-iron powder 1~3%, silicomangan 15~30%, dioxy
SiClx 10~15%, nickel 6~10%, aluminum oxide 2~6%, manganese oxide 2~6%, balance of iron powder；The filling rate of the medicine core
It is 30~40%.
2. low hydrogen, high toughness solder wire with acidity core according to claim 1, it is characterised in that manganese in the manganese-silicon
Content is 65~75%.
3. low hydrogen, high toughness solder wire with acidity core according to claim 1 and 2, it is characterised in that according to percetage by weight
Calculate, on the basis of medicine core gross weight, the component of the medicine core is：
Fluorite 4%, titanium dioxide 7%, graphite 5%, molybdenum-iron powder 2%, silicomangan 22%, silica 1 2%, nickel 8%, oxygen
Change aluminium 4%, manganese oxide 5%, balance of iron powder；The filling rate of the medicine core is 32~38%.
4. low hydrogen, high toughness solder wire with acidity core 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 7%, titanium dioxide 5%, graphite 6%, molybdenum-iron powder 1%, silicomangan 16%, silica 1 0%, nickel 10%, oxygen
Change aluminium 6%, manganese oxide 6%, balance of iron powder.
5. low hydrogen, high toughness solder wire with acidity core 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%, titanium dioxide 10%, graphite 5%, molybdenum-iron powder 3%, silicomangan 28%, silica 1 5%, nickel 6%, oxygen
Change aluminium 2%, manganese oxide 2%, balance of iron powder.
6. low hydrogen, high toughness solder wire with acidity core 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 |
|---|---|---|---|
| CN201611155007.6A CN106695155A (en) | 2016-12-14 | 2016-12-14 | Low-hydrogen high toughness acidic flux-cored wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611155007.6A CN106695155A (en) | 2016-12-14 | 2016-12-14 | Low-hydrogen high toughness acidic flux-cored wire |
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| Publication Number | Publication Date |
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| CN106695155A true CN106695155A (en) | 2017-05-24 |
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ID=58937651
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| CN201611155007.6A Pending CN106695155A (en) | 2016-12-14 | 2016-12-14 | Low-hydrogen high toughness acidic flux-cored wire |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108436322A (en) * | 2018-06-15 | 2018-08-24 | 天津市金桥焊材集团有限公司 | A kind of bridge steel high-strength and high ductility iron powder type flux-cored wire and its application |
| CN112872653A (en) * | 2021-02-04 | 2021-06-01 | 苏州鑫之泰焊接材料有限公司 | Stainless steel flux-cored wire without gas protection and preparation method thereof |
| CN113414518A (en) * | 2021-06-09 | 2021-09-21 | 株洲湘江电焊条有限公司 | Low-dust multipurpose high-manganese steel flux-cored wire and preparation process thereof |
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| US4639576A (en) * | 1985-03-22 | 1987-01-27 | Inco Alloys International, Inc. | Welding electrode |
| CN1861310A (en) * | 2006-06-09 | 2006-11-15 | 天津大桥焊材集团有限公司 | Low hydrogen, high toughness solder wire with acidity core |
| CN101428376A (en) * | 2008-12-10 | 2009-05-13 | 天津三英焊业股份有限公司 | High-chromium-manganese austenitic steel alkalescent full-position gas-protection flux-cored wire |
| CN101804533A (en) * | 2010-04-27 | 2010-08-18 | 上海林肯电气有限公司 | Gas shielded flux-cored wire for welding with low temperature, high toughness and full positions |
| CN102642103A (en) * | 2012-04-13 | 2012-08-22 | 武汉铁锚焊接材料股份有限公司 | Metal powder core type flux-cored wire for welding chromium-molybdenum steel, preparation and application of metal powder core type flux-cored wire |
| CN104148824A (en) * | 2014-09-01 | 2014-11-19 | 四川大西洋焊接材料股份有限公司 | High-tenacity flux-cored wire for electro-gas welding |
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2016
- 2016-12-14 CN CN201611155007.6A patent/CN106695155A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4639576A (en) * | 1985-03-22 | 1987-01-27 | Inco Alloys International, Inc. | Welding electrode |
| CN1861310A (en) * | 2006-06-09 | 2006-11-15 | 天津大桥焊材集团有限公司 | Low hydrogen, high toughness solder wire with acidity core |
| CN101428376A (en) * | 2008-12-10 | 2009-05-13 | 天津三英焊业股份有限公司 | High-chromium-manganese austenitic steel alkalescent full-position gas-protection flux-cored wire |
| CN101804533A (en) * | 2010-04-27 | 2010-08-18 | 上海林肯电气有限公司 | Gas shielded flux-cored wire for welding with low temperature, high toughness and full positions |
| CN102642103A (en) * | 2012-04-13 | 2012-08-22 | 武汉铁锚焊接材料股份有限公司 | Metal powder core type flux-cored wire for welding chromium-molybdenum steel, preparation and application of metal powder core type flux-cored wire |
| CN104148824A (en) * | 2014-09-01 | 2014-11-19 | 四川大西洋焊接材料股份有限公司 | High-tenacity flux-cored wire for electro-gas welding |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108436322A (en) * | 2018-06-15 | 2018-08-24 | 天津市金桥焊材集团有限公司 | A kind of bridge steel high-strength and high ductility iron powder type flux-cored wire and its application |
| CN108436322B (en) * | 2018-06-15 | 2021-08-24 | 天津市金桥焊材集团股份有限公司 | High-strength high-toughness iron powder type flux-cored wire for bridge steel and application thereof |
| CN112872653A (en) * | 2021-02-04 | 2021-06-01 | 苏州鑫之泰焊接材料有限公司 | Stainless steel flux-cored wire without gas protection and preparation method thereof |
| CN113414518A (en) * | 2021-06-09 | 2021-09-21 | 株洲湘江电焊条有限公司 | Low-dust multipurpose high-manganese steel flux-cored wire and preparation process thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
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| RJ01 | Rejection of invention patent application after publication |