CN107283034A - A kind of welding method of 460MPa grades of antidetonation fire-resistant and weather-resistant building structure - Google Patents

A kind of welding method of 460MPa grades of antidetonation fire-resistant and weather-resistant building structure Download PDF

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Publication number
CN107283034A
CN107283034A CN201710605839.1A CN201710605839A CN107283034A CN 107283034 A CN107283034 A CN 107283034A CN 201710605839 A CN201710605839 A CN 201710605839A CN 107283034 A CN107283034 A CN 107283034A
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welding
resistant
460mpa
weather
fire
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张熹
郭占山
赵英建
陈延清
刘宏
张楠
杨建炜
王凤会
刘琨
李文远
李春智
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Shougang Group Co Ltd
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Shougang Group Co Ltd
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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
    • B23K9/00—Arc welding or cutting
    • B23K9/18—Submerged-arc welding
    • 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
    • B23K35/24—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
    • B23K9/00—Arc welding or cutting
    • B23K9/235—Preliminary treatment
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • 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

Abstract

A kind of welding method of 460MPa grades of antidetonation fire-resistant and weather-resistant building structure, belongs to welding technology field.From the welding wire for submerged-arc welding and 460MPa fire-resistant and weather-resistant steels for meeting composition and mechanical property requirements；By 20~150 DEG C of steel plate weld preheating, interlayer temperature is controlled at 20~200 DEG C, and the polishing of groove abrasive machine is shown in into light before weldering, and bottoming, filling, capping are carried out with SJ101 solder flux using above-mentioned welding wire for submerged-arc welding.Mechanical properties test finally is carried out to the steel plate of postwelding.Advantage is, easy to operate insensitive to welding condition, and high-rise steel structure lightweight can be achieved, exempts from application, antidetonation and fire resisting service demand.

Description

A kind of welding method of 460MPa grades of antidetonation fire-resistant and weather-resistant building structure
Technical field
The invention belongs to welding technology field, more particularly to a kind of welding of 460MPa grades of antidetonation fire-resistant and weather-resistant building structure Method.
Background technology
As high-rise, long span building demand increasingly increases, the demand to the high-strength construction(al)steels of surrender >=460MPa is continuous Increase, for safety and the reduction later maintenance expense consideration of being on active service to skyscraper, high-strength building structural steel need to have fire resisting concurrently (600 DEG C of yield strengths are not less than room temperature 2/3), weather-proof (corrosion rate≤0.013mm/), antidetonation (- 40 DEG C of ballistic works >= 69J), and construction steel structure welding processing ratio is higher, as as-cast structure weld seam compare mother metal, while meet fire resisting, it is resistance to Time, high tenacity are more difficult, the key technology as limitation novel building high-strength steel application.Welded H section steel should in building structure With large percentage, weld based on Lincoln weld, without supporting 460MPa grades of welding wire for submerged-arc welding seriously limit 660MPa grades it is high-strength Popularization and application of the antidetonation fire-resistant and weather-resistant steel in building trade.
The content of the invention
Present invention aims at a kind of welding method of 460MPa grades of antidetonation fire-resistant and weather-resistant building structure is provided, solve It is 460MPa grades high build weld metal after steel welding be difficult have fire resisting (600 DEG C of yield strengths are not less than room temperature 2/3) concurrently, it is weather-proof (rotten Lose speed≤0.013mm/), antidetonation (- 40 DEG C of ballistic work >=69J) the problem of.
A kind of welding method of 460MPa grades of antidetonation fire-resistant and weather-resistant building structure, its step and parameter are as follows：
1st, met from welding wire for submerged-arc welding chemical composition mass percent：C≤0.1%, Mn 1.0~2.0%, Si≤ 0.80%th, S≤0.005%, P≤0.01%, Cr≤0.02%, Ni 0.1~1.5%, Mo 0.2~1.0%, Cu 0.1~ 0.5%th, Ti 0.01~0.15%, Nb≤0.01%, As≤0.002%, Sn≤0.002%, Sb≤0.002%, Al≤ 0.05%th, O≤0.004%, N≤0.01%, B≤0.001%, remaining is iron.
2nd, the chemical composition from 460MPa fire-resistant and weather-resistant steels is met：C≤0.1%, Mn 0.8~1.5%, Si containing≤ 0.50%th, S≤0.005%, P≤0.01%, Cr≤0.80%, Ni≤0.8%, Mo 0.2~0.5%, Cu 0.1~0.5%, Ti 0.005~0.03%, Nb≤0.1%, As≤0.002%, Sn≤0.002%, Sb≤0.002%, Al≤0.05%, O≤ 0.004%th, N≤0.01%, B≤0.001%, remaining is iron.
The mechanical property of 460MPa fire-resistant and weather-resistant steels is met：Room-temperature yield strength >=460MPa, room temperature tensile intensity >= 550MPa, room temperature elongation after fracture >=17%, 600 DEG C yield strength >=307MPa, -40 DEG C of low-temperature impact work >=69J, year corrosion Speed≤0.013mm/.
3rd, by 20~150 DEG C of steel plate weld preheating, interlayer temperature is controlled at 20~200 DEG C, by groove abrasive machine before weldering Light is shown in polishing, and bottoming, filling, capping are carried out with SJ101 solder flux using above-mentioned welding wire for submerged-arc welding.The back side is used after emery wheel Jin Hang Cheongju roots Welding filling is carried out to filling up.Backing run technological parameter be 420~480A of electric current, 23~25V of voltage, speed of welding 320~ 380mm/min；Filling, the control of final pass welding condition are in 500~700A of electric current, 25~35V of voltage, speed of welding 300~700mm/min.
Described welding wire for submerged-arc welding a diameter of 3.2 or 4.0mm.
4th, mechanical properties test is carried out to the steel plate of postwelding, welded under≤50kJ/cm thermal weld stress, it is resulting Weld metal ensure room-temperature yield strength >=460MPa, room temperature tensile intensity >=550MPa, room temperature elongation after fracture >=17%, 600 DEG C of yield strength >=307MPa, -40 DEG C of low-temperature impact work >=69J, year corrosion rate≤0.013mm/.
It is an advantage of the current invention that it is easy to operate insensitive to welding condition, high-rise steel structure lightweight can be achieved, exempts from Application, antidetonation and fire resisting service demand.
Brief description of the drawings
Fig. 1 is 30mm divided edge of steel plate schematic diagrames.
Fig. 2 is 12mm divided edge of steel plate schematic diagrames.
Embodiment
Embodiment 1
1st, met from welding wire for submerged-arc welding chemical composition mass percent：C 0.08%, Mn 1.3%, Si 0.80%, S 0.005%th, P 0.008%, Cr 0.01%, Ni 0.9%, Mo 0.5%, Cu 0.25%, Ti 0.0125%, Nb 0.002%th, As 0.001%, Sn 0.001%, Sb 0.001%, Al 0.024%, O 0.0015%, N≤0.0045%, B ≤ 0.0003%, remaining is iron.
2nd, it is 30mm from 460MPa fire-resistant and weather-resistant steels thickness, test plate (panel) opens asymmetry X-groove, groove as shown in figure 1, steel Board size is 600mm × 200mm × 30mm, stays 2mm root faces, two plates do not stay gap.
3rd, the chemical composition from 460MPa fire-resistant and weather-resistant steels is met：C0.05%, Mn1.0%, Si≤0.26%, S 0.005%th, P 0.007%, Cr 0.50%, Ni 0.12%, Mo 0.25%, Cu 0.32%, Ti 0.013%, Nb 0.05%th, As 0.0002%, Sn 0.0002%, Sb 0.0002%, Al 0.03%, O 0.002%, N 0.0043%, B 0.0005%, remaining is iron.
4th, the mechanical property from 460MPa fire-resistant and weather-resistant steels is met：Room-temperature yield strength 510MPa, room temperature tensile intensity 678MPa, room temperature elongation after fracture 20%, 600 DEG C of yield strength 338MPa, -40 DEG C of low-temperature impact work 225J, year corrosion rate 0.008mm/.
5th, by steel plate thick 30mm+30mm, weld preheating is to 80 DEG C, and interlayer temperature is controlled at≤200 DEG C, by groove before weldering See light with abrasive machine polishing, bottoming, filling, capping are carried out with SJ101 solder flux using the diameter 4.0mm welding wire for submerged-arc welding invented. Enter after row Cheongju roots to carry out welding filling to filling up using emery wheel in the back side.
Backing run technological parameter is electric current 450A, voltage 25V, speed of welding 350mm/min；Filling, final pass weldering Process parameter control is connect in electric current 620A, voltage 28V, speed of welding 350mm/min.
Mechanical properties test is carried out to the steel plate of postwelding, welding point room temperature tensile intensity is 668MPa, and 600 DEG C of surrenders are strong Spend for 328MPa, -40 DEG C of ballistic work 96J of weld seam, -40 DEG C of heat affected area ballistic work 196J.
Embodiment 2
1st, met from welding wire for submerged-arc welding chemical composition mass percent：C0.08%, Mn 1.3%, Si 0.80%, 0.005%th, P 0.008%, Cr 0.01%, Ni 0.9%, Mo 0.5%, Cu 0.25%, Ti 0.0125%, Nb 0.002%th, As 0.001%, Sn 0.001%, Sb 0.001%, Al 0.024%, O 0.0015%, N≤0.0045%, B ≤ 0.0003%, remaining is iron.
2nd, it is 12mm from 460MPa fire-resistant and weather-resistant steels thickness, test plate (panel) opens I type grooves, and groove is as shown in Fig. 2 plate size For 600mm × 200mm × 12mm, two plates do not stay gap.
3rd, the chemical composition from 460MPa fire-resistant and weather-resistant steels is met：C 0.05%, Mn1.1%, Si≤0.28%, S 0.005%th, P 0.008%, Cr 0.30%, Ni 0.50%, Mo 0.30%, Cu 0.25%, Ti 0.015%, Nb 0.03%th, As 0.0002%, Sn 0.0002%, Sb 0.0002%, Al 0.027%, O 0.0018%, N 0.0054%, B 0.0004%, remaining is iron.
4th, the mechanical property from 460MPa fire-resistant and weather-resistant steels is met：Room-temperature yield strength 550MPa, room temperature tensile intensity 679MPa, room temperature elongation after fracture 20%, 600 DEG C of yield strength 338MPa, -40 DEG C of low-temperature impact work 238J, year corrosion rate 0.007mm/.
5th, SJ101 solder flux is matched somebody with somebody using 4.0mm welding wire for submerged-arc welding, front welding bead technological parameter is electric current 605A, voltage 29V, weldering Meet speed 612mm/min；Welded after back root cleaning, technological parameter is electric current 650A, voltage 33V, speed of welding 650mm/ min。
Mechanical properties test is carried out to the steel plate of postwelding, welding point room temperature tensile intensity is 688MPa, and 600 DEG C of surrenders are strong Spend for 329MPa, -40 DEG C of ballistic work 77J of weld seam, -40 DEG C of heat affected area ballistic work 138J.

Claims (3)

1. a kind of welding method of 460MPa grades of antidetonation fire-resistant and weather-resistant building structure, it is characterised in that its step and parameter are as follows：
1) met from welding wire for submerged-arc welding chemical composition mass percent：C≤0.1%, Mn 1.0~2.0%, Si≤0.80%, S ≤ 0.005%, P≤0.01%, Cr≤0.02%, Ni 0.1~1.5%, Mo 0.2~1.0%, Cu 0.1~0.5%, Ti 0.01~0.15%, Nb≤0.01%, As≤0.002%, Sn≤0.002%, Sb≤0.002%, Al≤0.05%, O≤ 0.004%th, N≤0.01%, B≤0.001%, remaining is iron；
2) chemical composition from 460MPa fire-resistant and weather-resistant steels is met：C≤0.1%, Mn 0.8~1.5%, Si containing≤0.50%, S≤0.005%, P≤0.01%, Cr≤0.80%, Ni≤0.8%, Mo 0.2~0.5%, Cu 0.1~0.5%, Ti 0.005~0.03%, Nb≤0.1%, As≤0.002%, Sn≤0.002%, Sb≤0.002%, Al≤0.05%, O≤ 0.004%th, N≤0.01%, B≤0.001%, remaining is iron；
3) by 20~150 DEG C of steel plate weld preheating, interlayer temperature is controlled at 20~200 DEG C, and groove is polished with abrasive machine before weldering See light, bottoming, filling, capping are carried out with SJ101 solder flux using above-mentioned welding wire for submerged-arc welding；The back side is entered after row Cheongju roots using emery wheel to be carried out Welding filling is to filling up；Backing run technological parameter be 420~480A of electric current, 23~25V of voltage, speed of welding 320~ 380mm/min；Filling, the control of final pass welding condition are in 500~700A of electric current, 25~35V of voltage, speed of welding 300~700mm/min；
4) mechanical properties test is carried out to the steel plate of postwelding, welded under≤50kJ/cm thermal weld stress, resulting weldering Stitch metal and ensure room-temperature yield strength >=460MPa, room temperature tensile intensity >=550MPa, room temperature elongation after fracture >=17%, 600 DEG C yield strength >=307MPa, -40 DEG C of low-temperature impact work >=69J, year corrosion rate≤0.013mm/.
2. the mechanical property of the 460MPa fire-resistant and weather-resistant steels described according to the method described in claim 1, it is characterised in that step 2) It can meet：Room-temperature yield strength >=460MPa, room temperature tensile intensity >=550MPa, room temperature elongation after fracture >=17%, 600 DEG C is bent Take intensity >=307MPa, -40 DEG C of low-temperature impact work >=69J, year corrosion rate≤0.013mm/.
3. welding wire for submerged-arc welding a diameter of 3.2 described according to the method described in claim 1, it is characterised in that step 3) or 4.0mm。
CN201710605839.1A 2017-07-22 2017-07-22 A kind of welding method of 460MPa grades of antidetonation fire-resistant and weather-resistant building structure Pending CN107283034A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108857140A (en) * 2018-07-26 2018-11-23 钢铁研究总院 Antidetonation is anti-corrosion 460MPa grades of welding wire for submerged-arc welding of fire-resistive construction structural steel
CN110280925A (en) * 2019-07-16 2019-09-27 南京钢铁股份有限公司 A kind of welding wire for submerged-arc welding for high building structure refractory steel
CN111101071A (en) * 2020-02-25 2020-05-05 湖南华菱涟源钢铁有限公司 High-strength weathering steel and production method thereof
CN112372117A (en) * 2020-12-02 2021-02-19 南京钢铁股份有限公司 Large heat input submerged arc welding method for refractory steel with yield strength of 460MPa and thickness of 60mm
CN112593158A (en) * 2020-12-11 2021-04-02 湖南华菱涟源钢铁有限公司 690MPa low-temperature-resistant ultrahigh-strength weather-resistant steel plate and preparation method thereof
WO2022267149A1 (en) * 2021-06-23 2022-12-29 南京钢铁股份有限公司 460 mpa-grade all-position gas shielded welding wire for building resistant to secondary fire and manufacturing method

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JPH07290275A (en) * 1994-04-25 1995-11-07 Kobe Steel Ltd Welding wire for high strength cr-mo steel
CN102267020A (en) * 2010-06-07 2011-12-07 鞍钢股份有限公司 Metal powder core submerged-arc welding wire having fire-resistant property
CN102181792A (en) * 2011-04-01 2011-09-14 江苏省沙钢钢铁研究院有限公司 Low-cost high-strength high-toughness shock-proof refractory steel and preparation technique thereof
CN104162748A (en) * 2014-08-22 2014-11-26 首钢总公司 Welding wire special for high-strength steel penstock submerged-arc welding
CN105296875A (en) * 2015-11-17 2016-02-03 浙江盛达铁塔有限公司 Weathering resistant steel welding line alloy and SAW welding method of weathering resistant steel
CN106736031A (en) * 2016-12-26 2017-05-31 首钢总公司 A kind of steel welding rod

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108857140A (en) * 2018-07-26 2018-11-23 钢铁研究总院 Antidetonation is anti-corrosion 460MPa grades of welding wire for submerged-arc welding of fire-resistive construction structural steel
CN110280925A (en) * 2019-07-16 2019-09-27 南京钢铁股份有限公司 A kind of welding wire for submerged-arc welding for high building structure refractory steel
CN111101071A (en) * 2020-02-25 2020-05-05 湖南华菱涟源钢铁有限公司 High-strength weathering steel and production method thereof
CN112372117A (en) * 2020-12-02 2021-02-19 南京钢铁股份有限公司 Large heat input submerged arc welding method for refractory steel with yield strength of 460MPa and thickness of 60mm
CN112593158A (en) * 2020-12-11 2021-04-02 湖南华菱涟源钢铁有限公司 690MPa low-temperature-resistant ultrahigh-strength weather-resistant steel plate and preparation method thereof
CN112593158B (en) * 2020-12-11 2021-11-30 湖南华菱涟源钢铁有限公司 690MPa low-temperature-resistant ultrahigh-strength weather-resistant steel plate and preparation method thereof
WO2022267149A1 (en) * 2021-06-23 2022-12-29 南京钢铁股份有限公司 460 mpa-grade all-position gas shielded welding wire for building resistant to secondary fire and manufacturing method

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