CN105234584A - Gas shield solid welding wire for high corrosion resistance type weathering resistant steel - Google Patents
Gas shield solid welding wire for high corrosion resistance type weathering resistant steel Download PDFInfo
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- CN105234584A CN105234584A CN201510725741.0A CN201510725741A CN105234584A CN 105234584 A CN105234584 A CN 105234584A CN 201510725741 A CN201510725741 A CN 201510725741A CN 105234584 A CN105234584 A CN 105234584A
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- welding wire
- solid welding
- high corrosion
- type weathering
- corrosion resistant
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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
- B23K35/02—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
-
- 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
- B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
- B23K35/383—Selection of media, e.g. special atmospheres for surrounding the working area mainly containing noble gases or nitrogen
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Arc Welding In General (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention belongs to the technical field of welding materials, and particularly provides a gas shield solid welding wire for high corrosion resistance type weathering resistant steel. The gas shield solid welding wire comprises, by mass, the following chemical components of 0.01% of C or less, 0.40%-0.60% of Si, 0.5%-1.0% of Mn, 1.25%-1.55% of Cr, 3.0%-4.0% of Ni, 0.17%-0.30% of Cu, 0.02%-0.06% of Ti, 0.002%-0.006% of B, 0.005%-0.015% of S, 0.010% of P or less and the balance iron and inevitable impurities. The chemical components are reasonably designed, and therefore the gas shield solid welding wire has the beneficial effects that corrosion resistance is good, the deposited metal strength is moderate, welding joints are good in low-temperature impact toughness and attractive in forming, small splashing is achieved, and the welding technology is excellent in performance; and meanwhile rich-chlorine gas shield welding is adopted in the solid welding wire, the relative corrosion rate of the solid welding wire is smaller than or equal to 10% by taking an S450EW steel plate as a reference, and the solid welding wire can be suitable for welding of high corrosion resistance type weathering resistant steel plates of the 650MPa level.
Description
Technical field
The invention belongs to technical field of welding materials, be specifically related to a kind of high corrosion resistant type weathering steel Shielding Solid Welding Wire.
Background technology
Along with the exploitation of micro-alloying technology and the progress of metallurgical technology technology, the application of the supporting welding material of weather resisting steel is in a kind of trend of growth all the time, connect the welding of Main Means as it, the development & production of its supporting welding material also more and more seems particularly urgent and important.Along with the development of science and technology, the steel plate of higher anti-corrosion requirement needs the welding wire of higher level to mate.
At present, along with the development of domestic science and technology, on the basis of existing rail freight weathering steel, for improving the decay resistance of steel further, investigated a kind of high corrosion resistant type weathering steel steel plate of supporting C80 heavy-duty freight car, low-alloy steel decay resistance and car body are improve about 50% service life, advances the material foundation of macro-axis heavy-duty freight car of new generation, this steel plate S450EW, S450AW all develops at present.
But, when existing solid welding wire welds with above-mentioned high corrosion resistant type weathering steel steel plate, its weld seam tensile strength is too high, mechanical property is unstable, and its processing performance shortcoming is comparatively obvious, and major embodiment is that spatter is large, appearance of weld is bad, the defect such as welding wire top board in welding process.
Summary of the invention
In order to solve above-mentioned Problems existing; the invention provides a kind of high corrosion resistant type weathering steel Shielding Solid Welding Wire on the basis ensureing weld corrosion resistance energy; by adjustment solid welding wire chemical composition formula Design; stablize its weld properties, and improve that its spatter is large, appearance of weld is bad, the problem of the welding technological properties shortcoming such as welding wire top board in welding process.
Technical scheme of the present invention there is provided a kind of high corrosion resistant type weathering steel Shielding Solid Welding Wire; comprise the following chemical composition composition by mass percentage: C≤0.01%, Si:0.40 ~ 0.60%, Mn:0.5 ~ 1.0%; Cr:1.25 ~ 1.55%; Ni:3.0 ~ 4.0%, Cu:0.17 ~ 0.30%, Ti:0.02 ~ 0.06%; B:0.002 ~ 0.006%; S:0.005 ~ 0.015%, P≤0.010%, surplus is iron and inevitable impurity.
In the present invention, conduct preferably; described high corrosion resistant type weathering steel Shielding Solid Welding Wire comprises the following chemical composition composition by mass percentage: C:0.0059%, Si:0.45%, Mn:0.85%; Cr:1.30%; Ni:3.5%, Cu:0.18%, Ti:0.04%; B:0.003%; S:0.010%, P≤0.005%, surplus is iron and inevitable impurity.
In the present invention, preferably, the mass ratio of described Ti and B is 10:1 in conduct.
In the present invention, conduct preferably; described high corrosion resistant type weathering steel Shielding Solid Welding Wire comprises the following chemical composition composition by mass percentage: C:0.01%, Si:0.55%, Mn:1.0%; Cr:1.52%; Ni:3.8%, Cu:0.21%, Ti:0.05%; B:0.005%; S:0.012%, P:0.010%, surplus is iron and inevitable impurity.
High corrosion resistant type weathering steel Shielding Solid Welding Wire of the present invention is applicable to the welding of rolling stock with high corrosion resistant type weathering steel of tensile strength 650Mpa rank.
The present invention is as preferably, and described high corrosion resistant type weathering steel Shielding Solid Welding Wire adopts argon-rich gas shielded when welding, this argon-rich gas consists of the argon gas of 80% and the carbon dioxide of 20%.
In the present invention, in high corrosion resistant type weathering steel Shielding Solid Welding Wire, the design principle of chemical composition is as follows:
Cr have improve weld corrosion resistance can effect, but, Cr content higher than 1.55% time, weld strength is too high, and its low temperature impact properties is very low, and too high Cr mono-aspect adds welding wire cost, too high Cr makes welding technological properties be deteriorated on the other hand, splashes and increases; And Cr content lower than 1.25% time, weld seam corrosion resistance is not enough.
C needs one of strict element controlled, when the mass content of C in welding wire is more than 0.01%, C element will make the tensile strength of weld seam raise in welding process, thus cause welding seam toughness not enough, in addition, too much C makes anticorrosive element Cr assemble in weld seam, causes the Cr dilution phenomenon in weld seam, the toughness of the weld seam reduced on the one hand, also reduces the corrosion resistance of weld seam on the other hand.But because C element is inevitable in iron and steel, therefore, strictly must control C content in weld seam below 0.01% does not comprise 0%.
Mn is main in weld seam plays deoxidation, ensures weldquality, in this component of weld wire, when Mn content is more than 1.0%, easily causes Mn segregation, easily produce M-A island structure in line of segragation, thus reduce the toughness of weld metal; Mn content lower than 0.5% time, make the scarce capacity of weld seam deoxidation and desulfurization in the present invention, thus make to occur non-metallic inclusion in weld seam, cause weld seam low-temperature impact toughness not enough.
Si and Mn plays a part combined deoxidation, avoids producing the defects such as pore in weld seam, ensures weldquality; But when Si content is more than 0.6% in the present invention, welding slag is more during welding, make striking bad; Si content lower than 0.4% time, deoxidation is in the present invention not enough, easily forms pore.
Ni coordinates Cr to improve the decay resistance of weld seam, and in addition, appropriate Mn and Ni ratio, makes the acicular ferrite in weld seam increase, improve the low-temperature impact toughness of weld seam; But, in the present invention Ni content higher than 4.0% time, in weld seam, Mn, Ni are out of proportion, cause weld seam cold impact value to decline; Ni content lower than 3.0% time, weld seam corrosion resistance is not enough.
Cu mainly coordinates the elements such as Ni and Cr to combine the atmospheric corrosion resistance improving weld seam, when Cu content is more than 0.3%, easily causes weld cracking; When Cu content lower than 0.17% time, weld seam corrosion resistance is not enough.
Ti mainly plays stabilising arc, and when Ti content is greater than 0.06%, molten iron is more sticky, and wire rod presentation quality is poor, and production process of welding wire has some setbacks, when Ti content lower than 0.02% time, the splashing in welding process is excessive.
B mainly coordinates with Ti element, improves the low temperature impact properties of weld seam.
S, P, as impurity element, should control in the reasonable scope, and when in welding wire during P>0.010%, during S>0.015%, the welding performance of welding wire will reduce greatly; But, when S content in welding wire lower than 0.005% time, the molten iron in welding process is more sticky, and appearance of weld is poor.
Beneficial effect of the present invention:
(1) by selecting Cr, Ni, Cu unit, this high corrosion resistant type weathering steel Shielding Solid Welding Wire provided by the invention usually ensures that weld seam has enough atmospheric corrosion resistance abilities; the tensile strength controlling weld seam and the object improving appearance of weld is reached by the content of control C, S, Mn element; the low temperature impact properties improving weld seam is combined by selecting Ti-B, Mn-Ni; and the splashing reduced in welding process, solve the problem that welding wire melting rate is slow.
(2) to have corrosion resisting property good for this high corrosion resistant type weathering steel Shielding Solid Welding Wire provided by the invention, and deposited metal moderate strength, weld seam low-temperature impact toughness is good, and appearance of weld is attractive in appearance, splashes little, the advantages such as welding technological properties is excellent.
(3) this high corrosion resistant type weathering steel Shielding Solid Welding Wire provided by the invention adopts argon-rich gas (80%Ar+20%CO
2) protection welding, its relative rate of corrosion (with S450EW steel plate for benchmark)≤10%, can be used for the welding of the contour corrosion resistant type weather-resistant steel plate of S450EW of 650MPa rank.
Detailed description of the invention
Embodiment 1:
The present embodiment specifically provides a kind of high corrosion resistant type weathering steel Shielding Solid Welding Wire, adopts 500Kg vacuum induction furnace to smelt steel for welding wire, then through rolling, wire drawing, copper facing, layer around etc. operation to make diameter be 1.175mm solid welding wire; The main chemical compositions (mass percent) of this solid welding wire is C:0.01%, Si:0.40%, Mn:0.5%, Cr:1.25%, Ni:4.0%, Cu:0.30%, Ti:0.02%, B:0.002%, S:0.005%, P:0.008%, surplus is iron and inevitable impurity.
Adopt argon-rich gas shielded, this argon-rich gas consists of the argon gas (Ar) of 80% and the carbon dioxide (CO of 20%
2), adopt above-mentioned solid welding wire to carry out soldering test, welding current is 260 ~ 280A, weldingvoltage 28V, speed of welding 25cm/min.The tensile strength of mechanical property of the present embodiment solid welding wire gained deposited metal is adopted to reach 754MPa ,-40 DEG C of KV
2impact value reaches 65J, relative rate of corrosion 7.0%(with S450EW steel plate for benchmark).Meanwhile, when this high corrosion resistant type weathering steel Shielding Solid Welding Wire is welded, arc stability, splashes little, pore-free, beautiful appearance.
By selecting Cr, Ni, Cu unit, this high corrosion resistant type weathering steel Shielding Solid Welding Wire provided by the invention usually ensures that weld seam has enough atmospheric corrosion resistance abilities; the tensile strength controlling weld seam and the object improving appearance of weld is reached by the content of control C, S, Mn element; the low temperature impact properties improving weld seam is combined by selecting Ti-B, Mn-Ni; and the splashing reduced in welding process, solve the problem that welding wire melting rate is slow.
Embodiment 2:
The present embodiment specifically provides a kind of high corrosion resistant type weathering steel Shielding Solid Welding Wire, adopts 500Kg vacuum induction furnace to smelt steel for welding wire, then through rolling, wire drawing, copper facing, layer around etc. operation to make diameter be 1.175mm solid welding wire.The chemical composition (mass percent) of this solid welding wire is C:0.0059%, Si:0.60%, Mn:1.0%, Cr:1.55%, Ni:3.0%, Cu:0.17%, Ti:0.06%, B:0.006%, S:0.015%, P:0.007%, surplus is iron and inevitable impurity.
With argon-rich gas (80%Ar+20%CO
2) protection, adopt above-mentioned solid welding wire to carry out soldering test, welding current is 260 ~ 280A, weldingvoltage 28V, speed of welding 25cm/min.The present embodiment solid welding wire gained deposited metal tensile strength of mechanical property is adopted to reach 723MPa ,-40 DEG C of KV
2impact value reaches 98J, relative rate of corrosion 0.2%(with S450EW steel plate for benchmark).Meanwhile, when this high corrosion resistant type weathering steel Shielding Solid Welding Wire is welded, arc stability, splashes little, pore-free, beautiful appearance.
Embodiment 3:
The present embodiment specifically provides a kind of high corrosion resistant type weathering steel Shielding Solid Welding Wire, adopts 500Kg vacuum induction furnace to smelt steel for welding wire, then through rolling, wire drawing, copper facing, layer around etc. operation to make diameter be 1.175mm solid welding wire.The main chemical compositions (mass percent) of this solid welding wire is C:0.0059%, Si:0.45%, Mn:0.85%, Cr:1.30%, Ni:3.5%, Cu:0.18%, Ti:0.04%, B:0.003%, S:0.010%, P:0.005%, surplus is iron and inevitable impurity.
With rich argon (80%Ar+20%CO
2) gas shield, adopt above-mentioned welding wire to carry out soldering test, welding current is 260 ~ 280A, weldingvoltage 28V, speed of welding 25cm/min.Gained deposited metal tensile strength of mechanical property reaches 717Mpa ,-40 DEG C of KV
2impact value reaches 132J, relative rate of corrosion 0.8%(with S450EW steel plate for benchmark).Meanwhile, when this high corrosion resistant type weathering steel Shielding Solid Welding Wire is welded, arc stability, splashes little, pore-free, beautiful appearance.
Embodiment 4:
The present embodiment specifically provides a kind of high corrosion resistant type weathering steel Shielding Solid Welding Wire, adopts 500Kg vacuum induction furnace to smelt steel for welding wire, then through rolling, wire drawing, copper facing, layer around etc. operation to make diameter be 1.175mm solid welding wire.The main chemical compositions (mass percent) of this solid welding wire is C:0.0032%, Si:0.55%, Mn:1.0%, Cr:1.34%, Ni:3.5%, Cu:0.20%, Ti:0.04%, B:0.004%, S:0.010%, P:0.010%, surplus is iron and inevitable impurity.
With rich argon (80%Ar+20%CO
2) gas shield, adopt above-mentioned welding wire to carry out soldering test, welding current is 260 ~ 280A, weldingvoltage 28V, speed of welding 25cm/min.Gained deposited metal tensile strength of mechanical property reaches 668Mpa ,-40 DEG C of KV
2impact value reaches 82J, relative rate of corrosion 3.0%(with S450EW steel plate for benchmark).Meanwhile, when this high corrosion resistant type weathering steel Shielding Solid Welding Wire is welded, arc stability, splashes little, pore-free, beautiful appearance.
Embodiment 5:
The present embodiment specifically provides high corrosion resistant type weathering steel Shielding Solid Welding Wire, adopts 500Kg vacuum induction furnace to smelt steel for welding wire, then through rolling, wire drawing, copper facing, layer around etc. operation to make diameter be 1.175mm solid welding wire.The main chemical compositions (mass percent) of this solid welding wire is C:0.01%, Si:0.55%, Mn:1.0%, Cr:1.52%, Ni:3.8%, Cu:0.21%, Ti:0.05%, B:0.005%, S:0.012%, P:0.010%, surplus is iron and inevitable impurity.
With rich argon (80%Ar+20%CO
2) gas shield, adopt above-mentioned welding wire to carry out soldering test, welding current is 260 ~ 280A, weldingvoltage 28V, speed of welding 25cm/min.Gained deposited metal tensile strength of mechanical property reaches 768Mpa ,-40 DEG C of KV
2impact value reaches 96J, relative rate of corrosion 4.0%(with S450EW steel plate for benchmark).Meanwhile, when this high corrosion resistant type weathering steel Shielding Solid Welding Wire is welded, arc stability, splashes little, pore-free, beautiful appearance.
In sum, it is good that this high corrosion resistant type weathering steel Shielding Solid Welding Wire provided by the invention has corrosion resisting property, deposited metal moderate strength, and weld seam low-temperature impact toughness is good, and appearance of weld is attractive in appearance, splashes little, the advantages such as welding technological properties is excellent; In addition, argon-rich gas (80%Ar+20%CO is adopted
2) protection welding, its relative rate of corrosion≤10%(with S450EW steel plate for benchmark), can be used for the welding of the high corrosion resistant type weather-resistant steel plates of rolling stock such as the S450EW of 650MPa rank.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.
Claims (6)
1. one kind high corrosion resistant type weathering steel Shielding Solid Welding Wire; it is characterized in that: comprise the following chemical composition composition by mass percentage: C≤0.01%, Si:0.40 ~ 0.60%, Mn:0.5 ~ 1.0%; Cr:1.25 ~ 1.55%; Ni:3.0 ~ 4.0%, Cu:0.17 ~ 0.30%, Ti:0.02 ~ 0.06%; B:0.002 ~ 0.006%; S:0.005 ~ 0.015%, P≤0.010%, surplus is iron and inevitable impurity.
2. high corrosion resistant type weathering steel Shielding Solid Welding Wire as claimed in claim 1; it is characterized in that: comprise the following chemical composition composition by mass percentage: C:0.0059%, Si:0.45%, Mn:0.85%; Cr:1.30%; Ni:3.5%, Cu:0.18%, Ti:0.04%; B:0.003%; S:0.010%, P≤0.005%, surplus is iron and inevitable impurity.
3. high corrosion resistant type weathering steel Shielding Solid Welding Wire as claimed in claim 1, is characterized in that: the mass ratio of described Ti and B is 10:1.
4. the high corrosion resistant type weathering steel Shielding Solid Welding Wire as described in claim 1 or 3; it is characterized in that: comprise the following chemical composition composition by mass percentage: C:0.01%, Si:0.55%, Mn:1.0%; Cr:1.52%; Ni:3.8%, Cu:0.21%, Ti:0.05%; B:0.005%; S:0.012%, P:0.010%, surplus is iron and inevitable impurity.
5. the utilization of the high corrosion resistant type weathering steel Shielding Solid Welding Wire according to any one of Claims 1 to 4, is characterized in that: described Shielding Solid Welding Wire is used for the welding of the high corrosion resistant type weathering steel of rolling stock of tensile strength 650Mpa rank.
6. the utilization of high corrosion resistant type weathering steel Shielding Solid Welding Wire as claimed in claim 5; it is characterized in that: described high corrosion resistant type weathering steel Shielding Solid Welding Wire adopts argon-rich gas shielded when welding, this argon-rich gas consists of the argon gas of 80% and the carbon dioxide of 20%.
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Cited By (8)
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| CN105798481A (en) * | 2016-05-30 | 2016-07-27 | 燕山大学 | Weather-proof gas protection welding wire for coating-free weather-proof steel bridge |
| CN107350657A (en) * | 2017-05-27 | 2017-11-17 | 内蒙古包钢钢联股份有限公司 | Weld railway vehicle dynamics gas protecting welding wire |
| CN109175786A (en) * | 2018-10-31 | 2019-01-11 | 首钢集团有限公司 | A kind of high-strength weather-proof gas protecting welding wire wire rod |
| CN111975246A (en) * | 2020-09-02 | 2020-11-24 | 燕山大学 | Coating-free weather-resistant argon-rich gas shielded welding wire with 650 MPa-level tensile strength for steel bridge and wire rod |
| CN112756844A (en) * | 2019-10-21 | 2021-05-07 | 宝山钢铁股份有限公司 | Wire rod for high-weather-resistance low-strength gas shielded welding wire and welding wire |
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| CN115365697A (en) * | 2022-08-23 | 2022-11-22 | 中国船舶重工集团公司第七二五研究所 | Gas-shielded solid welding wire for polar low-temperature steel and application thereof |
| CN118106660A (en) * | 2024-04-30 | 2024-05-31 | 洛阳船舶材料研究所(中国船舶集团有限公司第七二五研究所) | Manufacturing method of 460 MPa-level steel flux-cored wire for ships and maritime work |
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| CN109175786A (en) * | 2018-10-31 | 2019-01-11 | 首钢集团有限公司 | A kind of high-strength weather-proof gas protecting welding wire wire rod |
| EP4026652A4 (en) * | 2019-10-21 | 2022-12-14 | Baoshan Iron & Steel Co., Ltd. | Wire rod for gas protection welding wire, and welding wire |
| CN112756844A (en) * | 2019-10-21 | 2021-05-07 | 宝山钢铁股份有限公司 | Wire rod for high-weather-resistance low-strength gas shielded welding wire and welding wire |
| EP4129563A4 (en) * | 2020-05-18 | 2023-09-27 | Baoshan Iron & Steel Co., Ltd. | Wire rod for gas shielded welding wire and gas shielded welding wire |
| CN113681198A (en) * | 2020-05-18 | 2021-11-23 | 宝山钢铁股份有限公司 | High resistant wire rod and welding wire for gas shielded welding wire that wait for height and splash |
| JP7523584B2 (en) | 2020-05-18 | 2024-07-26 | バオシャン アイアン アンド スティール カンパニー リミテッド | Wire rod for gas-shielded welding wire and gas-shielded welding wire |
| CN111975246B (en) * | 2020-09-02 | 2021-07-30 | 燕山大学 | Coating-free weather-resistant argon-rich gas shielded welding wire with 650 MPa-level tensile strength for steel bridge and wire rod |
| CN111975246A (en) * | 2020-09-02 | 2020-11-24 | 燕山大学 | Coating-free weather-resistant argon-rich gas shielded welding wire with 650 MPa-level tensile strength for steel bridge and wire rod |
| CN115365697A (en) * | 2022-08-23 | 2022-11-22 | 中国船舶重工集团公司第七二五研究所 | Gas-shielded solid welding wire for polar low-temperature steel and application thereof |
| CN115365697B (en) * | 2022-08-23 | 2024-05-14 | 中国船舶重工集团公司第七二五研究所 | Gas shielded solid welding wire for polar region low-temperature steel and application thereof |
| CN118106660A (en) * | 2024-04-30 | 2024-05-31 | 洛阳船舶材料研究所(中国船舶集团有限公司第七二五研究所) | Manufacturing method of 460 MPa-level steel flux-cored wire for ships and maritime work |
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