CN106695170A - Gas-shielded flux-cored welding wire for welding stainless steel - Google Patents
Gas-shielded flux-cored welding wire for welding stainless steel Download PDFInfo
- Publication number
- CN106695170A CN106695170A CN201611152859.XA CN201611152859A CN106695170A CN 106695170 A CN106695170 A CN 106695170A CN 201611152859 A CN201611152859 A CN 201611152859A CN 106695170 A CN106695170 A CN 106695170A
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- China
- Prior art keywords
- stainless steel
- welding
- gas
- iron
- flux
- Prior art date
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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
- B23K35/3066—Fe as the principal constituent with Ni 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
- B23K35/22—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention provides a gas-shielded flux-cored welding wire for welding stainless steel. The gas-shielded flux-cored welding wire for welding stainless steel comprises a stainless steel sheath and a flux core, wherein the flux core comprises the following components in percentage by weight: 3-9% of manganese silicon alloy, 1-5% of silicon dioxide, 5-20% of Cr, 10-20% of Ni, 0.5-2.5% of potassium titanate, 10-15% of bismuth oxide, 2-8% of ferric oxide, 0.2-2.2% of fluoride, 0.5-3.5% of graphite and the balance of iron. The welding wire has the advantages of being stable in electric arcs, little in spattering, and beautiful in weld seam appearance, and vertical down welding can be achieved by short circuiting transfer.
Description
Technical field
The invention belongs to technical field of welding materials, and in particular to a kind of stainless steel welded gas-shielded flux-cored wire.
Background technology
In recent years, with economic fast development, stainless steel industry is also developed faster.Stainless steel consumption figure it is strong
Strength increases, and will drive the rapid growth in welding market：On the one hand, the quality progress of steel promotes stainless steel welding material more
It is new to regenerate；On the other hand, stainless steel welded efficiently (automation) process substantially raises speed, and promotes the breed structure readjustment of welding material
Paces are accelerated.
Compared with traditional stick electrode, copper plating solid core welding wire, submerged arc welding flux, welded using stainless flux-cored wire
With obvious advantage, first, welding process is more continuous, and can realize automatic welding, so as to reduce welding point,
Greatly improve production efficiency, be 3-4 times of manual electric arc welding, welding quality is good, has saved the energy, reduce it is comprehensive into
This；Second, stainless flux-cored wire is in the absence of heating and redness phenomenon, and it is minimum to splash, and weld seam light is silvery white in color, postwelding one
As do not need pickling, grinding and buffing；Third, the medicinal powder in flux-cored wire is all bakeed by high temperature, moisture is few, before welding
Need not dry, stomata sensitivity is relatively low.So stainless flux-cored wire is widely used in shipbuilding, petrochemical industry, pressure vessel, steel knot
The industry such as structure and engineering machinery.
Therefore, with economic quick, stable, sustainable development, market to the demand rapid growth of stainless steel material, to not
The demand of rust steel flux-cored wire is also increasing, develops, develops a kind of and supporting flux core welding wire of stainless steel, expires it
In the case of foot low cost, also with welding technological properties is good, arc stability, the characteristics of splashing is small, appearance of weld is attractive in appearance, it is
Highly important research topic.
The content of the invention
The present invention proposes a kind of stainless steel welded gas-shielded flux-cored wire, the welding wire have arc stability, splash it is small,
Appearance of weld is attractive in appearance, and the advantage that vertical downward is welded can be realized using short circuiting transfer.
The technical proposal of the invention is realized in this way：
A kind of stainless steel welded gas-shielded flux-cored wire, including stainless steel crust and medicine core, according to percetage by weight
Calculate, the constituent of the medicine core is：
Manganese-silicon 3~9%, silica 1~5%, Cr 5~20%, Ni 10~20%, potassium titanate 0.5~
2.5%th, bismuth oxide 10~15%, di-iron trioxide 2~8%, fluoride 0.2~2.2% and graphite 0.5~3.5%, balance of
Iron.
Further, the fluoride is a kind of or many in calcirm-fluoride, prodan, potassium fluosilicate and cryolite
Kind.
Further, the constituent of the medicine core is：
Manganese-silicon 5%, silica 3%, Cr 12%, Ni 16%, potassium titanate 1.2%, bismuth oxide 12%, three are aoxidized
Two iron 6%, fluoride 1.2% and graphite 2%, balance of iron.
Further, the constituent of the medicine core is：
Manganese-silicon 9%, silica 5%, Cr 20%, Ni 10%, potassium titanate 0.5%, bismuth oxide 10%, three are aoxidized
Two iron 2%, fluoride 2.2% and graphite 0.5%, balance of iron.
Further, a diameter of 1.2~1.8mm of the gas-shielded flux-cored wire.
Manganese-silicon：The content of its silicon is 20%~25%, adds appropriate element silicon to help to improve weld seam in formula
Shaping.
Potassium titanate and bismuth oxide can crystal grain thinning, improve low-temperature impact toughness, and welding pool surface tension can be improved,
Improve the shaping of weld seam.
Graphite：Deoxidation, to providing C element in molten bath.
Stainless steel welded gas-shielded flux-cored wire preparation method of the invention uses prior art, including following step
Suddenly：
1st, medicinal powder of the present invention is prepared by formula rate；
2nd, steel band is rolled into U-shaped, then to adding account for welding wire gross weight of the present invention 16%~20% medicine of the present invention in U-lag
Core powder；
3rd, U-lag is healed up with forming machine, medicine core powder is wrapped up wherein, by wire drawing machine, by road by wire drawing machine drawing,
Tube reducing, finally makes its diameter reach 1.2~1.8mm, obtains final products.
Beneficial effects of the present invention：
Deposited metal after being welded with the gas-shielded flux-cored wire of present invention offer：Tensile strength >=650Mpa, elongation percentage
>=46%；And welding technological properties is good, arc stability, the small, appearance of weld that splashes are attractive in appearance, can be realized using short circuiting transfer
Vertical downward is welded.
Specific embodiment
Embodiment 1
From the steel band of 10mm × 0.4mm, carbon, the 0.5- of its chemical composition (by weight percentage) 0.01-0.1%
1.5% manganese, the silicon of 0.1-1%, the sulphur of 0.005-0.015%, the phosphorus of 0.005-0.035%, the chromium of 15-25%, 5-15%
Nickel, balance of iron.
Medicine core constitutes percentage, and medicine core accounts for the 16% of welding wire weight, the weight percent of medicine core composition therein
Number is：
Manganese-silicon 5%, silica 3%, Cr 12%, Ni 16%, potassium titanate 1.2%, bismuth oxide 12%, three are aoxidized
Two iron 6%, calcirm-fluoride 1.2% and graphite 2%, balance of iron.
Welding parameter：I=200-220A, U=30-32V, gas flow 20L/min, pure CO2 gases.
Deposited metal composition (count by weight percentage) is：C 0.025%, Mn1.33, Si 0.5,
S0.002%, P0.012, Cr 18.78, Ni9.67, balance of Fe.
Deposited metal mechanical performance (pure CO2Gas) be：Tensile strength is 680MPa, and elongation percentage is 48%.
Embodiment 2
From the steel band of 10mm × 0.4mm, carbon, the 0.5- of its chemical composition (by weight percentage) 0.01-0.1%
1.5% manganese, the silicon of 0.1-1%, the sulphur of 0.005-0.015%, the phosphorus of 0.005-0.035%, the chromium of 15-25%, 5-15%
Nickel, balance of iron.
Medicine core constitutes percentage, and medicine core accounts for the 18% of welding wire weight, the weight percent of medicine core composition therein
Number is：
Manganese-silicon 9%, silica 5%, Cr 20%, Ni 10%, potassium titanate 0.5%, bismuth oxide 10%, three are aoxidized
Two iron 2%, potassium fluosilicate 2.2% and graphite 0.5%, balance of iron.
Deposited metal composition (count by weight percentage) is：C 0.025%, Mn1.33, Si 0.5,
S0.002%, P0.012, Cr 18.78, Ni9.67, balance of Fe.
Deposited metal mechanical performance (pure CO2Gas) be：Tensile strength is 650MPa, and elongation percentage is 46%.
Embodiment 3
From the steel band of 10mm × 0.4mm, carbon, the 0.5- of its chemical composition (by weight percentage) 0.01-0.1%
1.5% manganese, the silicon of 0.1-1%, the sulphur of 0.005-0.015%, the phosphorus of 0.005-0.035%, the chromium of 15-25%, 5-15%
Nickel, balance of iron.
Medicine core constitutes percentage, and medicine core accounts for the 20% of welding wire weight, the weight percent of medicine core composition therein
Number is：
Medicine core constitutes percentage, and medicine core accounts for the 18% of welding wire weight, the weight percent of medicine core composition therein
Number is：
Manganese-silicon 3%, silica 1 %, Cr 5%, Ni20%, potassium titanate 2.5%, the oxidation of bismuth oxide 15%, three two
Iron 8%, prodan 0.2% and graphite 3.5%, balance of iron.
Deposited metal composition (count by weight percentage) is：C 0.025%, Mn1.33, Si 0.5,
S0.002%, P0.012, Cr 18.78, Ni9.67, balance of Fe.
Deposited metal mechanical performance (pure CO2Gas) be：Tensile strength is 670MPa, and elongation percentage is 46.8%.
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 (5)
1. a kind of stainless steel welded gas-shielded flux-cored wire, including stainless steel crust and medicine core, it is characterised in that according to weight
Amount percentage is calculated, and the constituent of the medicine core is：
Manganese-silicon 3~9%, silica 1~5%, Cr 5~20%, Ni 10~20%, potassium titanate 0.5~2.5%, oxygen
Change bismuth 10~15%, di-iron trioxide 2~8%, fluoride 0.2~2.2% and graphite 0.5~3.5%, balance of iron.
2. stainless steel welded gas-shielded flux-cored wire according to claim 1, it is characterised in that the fluoride is
One or more in calcirm-fluoride, prodan, potassium fluosilicate and cryolite.
3. stainless steel welded gas-shielded flux-cored wire according to claim 1 and 2, it is characterised in that the medicine core
Constituent be：
Manganese-silicon 5%, silica 3%, Cr 12%, Ni 16%, potassium titanate 1.2%, bismuth oxide 12%, di-iron trioxide
6%th, fluoride 1.2% and graphite 2%, balance of iron.
4. stainless steel welded gas-shielded flux-cored wire according to claim 1 and 2, it is characterised in that the medicine core
Constituent be：
Manganese-silicon 9%, silica 5%, Cr 20%, Ni 10%, potassium titanate 0.5%, bismuth oxide 10%, di-iron trioxide
2%th, fluoride 2.2% and graphite 0.5%, balance of iron.
5. stainless steel welded gas-shielded flux-cored wire according to claim 1, it is characterised in that the gas shielded medicine
A diameter of 1.2~1.8mm of core welding wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611152859.XA CN106695170B (en) | 2016-12-14 | 2016-12-14 | Stainless steel welded gas-shielded flux-cored wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611152859.XA CN106695170B (en) | 2016-12-14 | 2016-12-14 | Stainless steel welded gas-shielded flux-cored wire |
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| CN106695170A true CN106695170A (en) | 2017-05-24 |
| CN106695170B CN106695170B (en) | 2019-02-19 |
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| CN201611152859.XA Active CN106695170B (en) | 2016-12-14 | 2016-12-14 | Stainless steel welded gas-shielded flux-cored wire |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108941974A (en) * | 2018-09-11 | 2018-12-07 | 江苏思迪彼特新材料科技有限公司 | A kind of corrosion-resistant stainless steel arc welding flux cored wire and preparation method thereof |
| CN110153586A (en) * | 2019-05-27 | 2019-08-23 | 洛阳双瑞特种合金材料有限公司 | A kind of core wire is ultralow-hydrogen low, the welding rod of resistance to moisture absorption the and the preparation method of seamless flux-cored wire |
| 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 |
| CN112643243A (en) * | 2020-11-30 | 2021-04-13 | 山东聚力焊接材料有限公司 | Stainless steel flux-cored wire |
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| CN101497152A (en) * | 2009-02-26 | 2009-08-05 | 山东大学 | Large-diameter flux-cored wire for revolving body or wear-resistant composite board overlaying welding |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108941974A (en) * | 2018-09-11 | 2018-12-07 | 江苏思迪彼特新材料科技有限公司 | A kind of corrosion-resistant stainless steel arc welding flux cored wire and preparation method thereof |
| CN110153586A (en) * | 2019-05-27 | 2019-08-23 | 洛阳双瑞特种合金材料有限公司 | A kind of core wire is ultralow-hydrogen low, the welding rod of resistance to moisture absorption the and the preparation method of seamless flux-cored wire |
| CN110153586B (en) * | 2019-05-27 | 2021-07-02 | 中国船舶重工集团公司第七二五研究所 | Ultralow-hydrogen moisture-absorption-resistant welding electrode with seamless flux-cored wire as core wire and preparation method thereof |
| 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 |
| 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 |
| CN112643243A (en) * | 2020-11-30 | 2021-04-13 | 山东聚力焊接材料有限公司 | Stainless steel flux-cored wire |
| CN112643243B (en) * | 2020-11-30 | 2022-04-19 | 山东聚力焊接材料有限公司 | Stainless steel flux-cored wire |
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|---|---|
| CN106695170B (en) | 2019-02-19 |
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