CN105127617A - Electric welding rod for welding steel ocean platform with yield strength of 550MPa - Google Patents

Electric welding rod for welding steel ocean platform with yield strength of 550MPa Download PDF

Info

Publication number
CN105127617A
CN105127617A CN201510491459.0A CN201510491459A CN105127617A CN 105127617 A CN105127617 A CN 105127617A CN 201510491459 A CN201510491459 A CN 201510491459A CN 105127617 A CN105127617 A CN 105127617A
Authority
CN
China
Prior art keywords
parts
welding rod
orders
require
chemical composition
Prior art date
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.)
Pending
Application number
CN201510491459.0A
Other languages
Chinese (zh)
Inventor
聂建航
王青云
亢天佑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
725th Research Institute of CSIC
Original Assignee
725th Research Institute of CSIC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 725th Research Institute of CSIC filed Critical 725th Research Institute of CSIC
Priority to CN201510491459.0A priority Critical patent/CN105127617A/en
Publication of CN105127617A publication Critical patent/CN105127617A/en
Pending legal-status Critical Current

Links

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
    • 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
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
    • 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
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
    • B23K35/3607—Silica or silicates
    • 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
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/365—Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials
    • 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
    • B23K35/404—Coated rods; Coated electrodes

Abstract

The invention discloses an electric welding rod for a welding steel ocean platform with yield strength of 550MPa. An inner core of the electric welding rod is made of H08E steel with low S and P content; and wrapped coating of the electric welding rod consists of the following components in parts by weight: 25-34 parts of marbles, 16-23 parts of fluorite, 4-8 parts of rutile, 5-7 parts of silicon micro powder, 20-24 parts of iron powder, 3-6 parts of ferrosilicon, 4-8 parts of ferromanganese, 1-2 parts of ferrotitanium, 1.5-2.5 parts of metal nickel, 0-0.5 part of metal chromium, 1.0-1.5 parts of ferromolybdenum, 1-2 parts of sodium carbonate, and 0.5-1.0 part of graphite. The components of the wrapped coating are mixed and stirred uniformly to obtain a mixture I; pure sodium water glass which accounts for 24% of the total weight of the wrapped coating is added into the mixture I to uniformly stir to obtain a mixture II, and the density of the pure sodium water glass is controlled to 1.40-1.45g/mm<3>; and the H08E steel and the wrapped coating are placed onto welding rod production equipment to prepare the electric welding rod. The electric welding rod disclosed by the invention is stable in mechanical property, proper in strength and relatively good in toughness.

Description

A kind of yield strength reaches the welding rod of 550MPa steel ocean platform welding
Technical field
The invention belongs to technical field of welding materials, especially a kind of yield strength reaches the welding rod of 550MPa steel ocean platform welding.
Background technology
Marine oil and gas resource exploitation becomes current and the focus of a period of time energy development from now on, marine settings steel and supporting welding material in great demand, and yield strength reaches 550MPa steel and more the offshore platform steel of high strength and supporting welding material still need import at present.Domestic welding rod ubiquity all-position welding manufacturability is poor, low-temperature flexibility is lower, unstable properties, easily occur the problems such as low value, can not meet the welding demand that yield strength reaches 550MPa steel ocean platform.
Summary of the invention
For solving domestic welding rod Problems existing, the invention provides the welding rod that a kind of yield strength reaches the welding of 550MPa steel ocean platform, the all-position welding manufacturability of this welding rod is good, arc stability, clear, the de-slag in molten bath are easy, deposited metal composition is reasonable in design, there is good low-temperature flexibility, the welding needs that yield strength reaches 550MPaE level steel ocean platform can be met.
For achieving the above object, the present invention adopts following technical scheme:
A kind of yield strength reaches the welding rod of 550MPa steel ocean platform welding, inner core in this welding rod adopts the H08E steel of low S, P and wraps up in outward in coating containing calcite and fluorite, rutile, silicon powder, iron powder, ferrosilicon, ferromanganese, ferrotianium, metallic nickel, crome metal, molybdenum-iron, soda ash and graphite, make this welding rod and use welding rod production equipment, welding rod production equipment conveniently mode of operation carries out, and feature of the present invention is as follows:
Require that the percentage chemical composition of H08E steel need meet: C≤0.010, Mn in 0.35 ~ 0.60, Si≤0.030, S≤0.005, P≤0.005;
Require that marmorean Task-size Controlling is at 60 orders, marmorean percentage chemical composition need meet: CaCO 3>=98.0, S≤0.010, P≤0.010;
Require that the Task-size Controlling of fluorite is at 60 orders, fluorite CaF 2>=95.0, SiO 2≤ 1.00, S≤0.010, P≤0.010;
Require that the Task-size Controlling of rutile is at 60 orders, the percentage chemical composition of rutile need meet: TiO 2>=95.0, S≤0.02, P≤0.02;
Require that the Task-size Controlling of silicon powder is at 100 orders, the percentage chemical composition of silicon powder need meet: SiO 2>=97.0, S≤0.010, P≤0.010;
Require that the Task-size Controlling of iron powder is at 60 orders, the percentage chemical composition of iron powder need meet: Fe >=98.0, S≤0.025, P≤0.020, C≤0.03;
Require that the Task-size Controlling of ferrosilicon is at 40 orders, the percentage chemical composition of ferrosilicon need meet: Si in 43.0 ~ 47.0, C≤0.020, S≤0.010, P≤0.010;
Require that the Task-size Controlling of ferromanganese is at 40 orders, the percentage chemical composition of ferromanganese need meet: C≤0.40, Mn in 80.0 ~ 87.0, S≤0.020, P≤0.150;
Require that the Task-size Controlling of ferrotianium is at 40 orders, the percentage chemical composition of ferrotianium need meet: Ti in 25 ~ 35, C≤0.1, S≤0.03, P≤0.05, Al≤8.0, Si≤4.5;
Require that the Task-size Controlling of metallic nickel is at 80 orders, the percentage chemical composition of metallic nickel need meet: Ni+Co >=99.5, C≤0.05, S≤0.005, P≤0.005;
The granularity requirements of above-mentioned crome metal controls at 80 orders, and the percentage chemical composition of crome metal need meet: C≤0.05, S≤0.05, P≤0.05, Si≤0.4, Al≤0.8, Cr >=98, Cu≤0.02;
Require that the Task-size Controlling of molybdenum-iron is at 80 orders, the percentage chemical composition of molybdenum-iron need meet: C≤0.15, P≤0.08, S≤0.10, Mo >=55.0;
Require that the Task-size Controlling of soda ash is at 60 orders, the Na in soda ash 2cO 3>=98.0;
Require that the Task-size Controlling of graphite is at 200 orders, the percentage chemical composition of graphite need meet: C >=95, S≤0.10, P≤0.010;
Under the cooperation of above-mentioned each requirement, wrapping up in coating proportioning by weight is outward: 25 ~ 34 parts, marble, 16 ~ 23 parts, fluorite, rutile 4 ~ 8 parts, silicon powder 5 ~ 7 parts, iron powder 20 ~ 24 parts, ferrosilicon 3 ~ 6 parts, 4 ~ 8 parts, ferromanganese, ferrotianium 1 ~ 2 part, metallic nickel 1.5 ~ 2.5 parts, crome metal 0 ~ 0.5 part, molybdenum-iron 1.0 ~ 1.5 parts, soda ash 1 ~ 2 part, 0.5 ~ 1.0 part, graphite;
To wrap up in outward each component mixing and stirring of coating, the purer sodium silicate 24% wrapping up in coating gross weight outside adding carries out mix and blend, the density domination of pure sodium silicate is at 1.40 ~ 1.45g/mm 3, afterwards by H08E steel with wrap up in coating outward and be jointly placed on welding rod production equipment and can prepare welding rod.
Require that the percentage chemical composition of pure sodium silicate need meet: Na 2o>=8.2, SiO 2>=26.0, S≤0.010, P≤0.010, the modulus of pure sodium silicate is 3.2M, and the Baume degrees of pure sodium silicate is 43 °.
Owing to adopting technical scheme described above, the present invention produces following good effect:
1) production technology function admirable of the present invention, welding rod smooth surface, bias are stable, yield rate is high.
2) all-position welding manufacturability of the present invention is good, arc stability, clear, the de-slag in molten bath are easy, and appearance of weld is attractive in appearance.
3) deposited metal diffusible hydrogen of the present invention can reach ultralow-hydrogen low requirement, adopts gas chromatography determination deposited metal diffusible hydrogen to be less than 4.0ml/100g.
4) stable mechanical property of the present invention, intensity is suitable, and toughness is better.The v-notch ballistic work average of deposited metal-40 DEG C is greater than 100J, tensile strength 670 ~ 750Mpa, can meet the welding that yield strength reaches 550MPa ocean platform E level steel plate.
Detailed description of the invention
The present invention is the welding rod that a kind of yield strength reaches the welding of 550MPa steel ocean platform, and H08E steel and the performance requirement wrapping up in coating outward see the following form.
Wrap up in outside in coating, calcite and fluorite, rutile, silicon powder are as gas making, slag former, and can play a protective role in stage droplet transfer and molten bath solidification stages liquid towards metal, suitable proportioning can obtain good all-position welding manufacturability.Adopt CaO-CaF 2-SiO 2-TiO 2slag system, slag basicity is high, and deposited metal diffusible hydrogen content is low, can also play desulfurized effect.Ferrosilicon, ferromanganese, ferrotianium, graphite are as deoxidation and alloy transition element, and suitable proportioning can make deposited metal obtain suitable oxygen content and suitable intensity, toughness reguirements.Nickel is improve Low Temperature Toughness of Deposited Metals, the most effective element of reduction ductile-brittle transition temperature as alloy transition.Chromium, molybdenum, as alloy transition, promote that acicular ferrite generates, ensure the intensity of deposited metal and good toughness.According to the proportioning of technical scheme, the performance indications that can obtain deposited metal are: C:0.04-0.8%, Si:0.2-0.4%, Mn:1.0-2.0%, Ni:1.0-1.5%, Cr:0-0.3, Mo:0.3-0.6, S :≤0.01%, P :≤0.015%, surplus is Fe.
In the composition of welding rod of the present invention, C has the effect improving deposited metal intensity, has great deterioration effect, so C content should control within the scope of 0.04-0.8% to low-temperature flexibility simultaneously.Si is harmful element to low-temperature flexibility, but is the indispensable element of proof strength, and plays deoxidation in welding process, and purification deposited metal, increases acicular ferrite quantity, so Si content should control at 0.2-0.4%.Mn and Si effect is similar, suitable Mn/Si ratio can refinement deposited metal acicular ferrite and coarse grain zone, fine grained region microscopic structure, improve low-temperature flexibility, so Mn content should control at 1.0-2.0%.Ni can promote that acicular ferrite is formed, and is the essential element improving Low Temperature Toughness of Deposited Metals, is reduce the most effective element of ductile-brittle transition temperature, controls within the scope of 1.0-1.5% in the present invention.A small amount of Cr, Mo can effectively promote that acicular ferrite generates, and improve intensity and to Toughness not quite, after exceeding some, reduce acicular ferrite and generate, and reduction toughness, in the present invention, control Cr is 0-0.3%, Mo is 0.3-0.6%.S, P are harmful impurity to Toughness of Deposited Metal, should reduce as far as possible.
To make technical scheme of the present invention below in conjunction with three embodiments wrapping up in coating outward and further illustrating, weight sees the following form.
Numbering Embodiment 1 Embodiment 2 Embodiment 3
Marble 28 25 34
Fluorite 19 23 16
Rutile 8 4 6
Silicon powder 6 7 5
Ferromanganese 8 6 4
Ferrosilicon 3 4 6
Ferrotianium 1 1 2
Iron powder 22 24 20
Graphite 0.5 1 1
Metallic nickel 1.5 2.0 2.5
Crome metal 0.5 0 0.5
Molybdenum-iron 1.5 1 1
Soda ash 1 2 2
The each component mixing and stirring of coating will be wrapped up in outward by said ratio, add the outer 24% pure sodium silicate wrapping up in coating gross weight again and carry out mix and blend, as wrapped up in coating gross weight 100 parts outward, then add the pure sodium silicate of 3.2M of 24 parts, waterglass density domination is at 1.40 ~ 1.45g/mm 3, outer coating of wrapping up in can be made to have plasticity needed for good extrusion, and remaining operation can prepare welding rod on welding rod production equipment.
Welding rod is cured 2 hours through 350 ~ 380 DEG C by above-mentioned three embodiments before soldering test, then according to GB GB/T5118-2012 and AWSA5.5 standard regulation, carry out deposited metal composition analysis, deposited metal Mechanics Performance Testing, deposited metal diffusible hydrogen content mensuration, for Φ 4.0 welding rod, welding condition is: source of welding current DC reverse connection, welding current 170 ~ 175A, weldingvoltage 22 ~ 26V, temperature 95 ~ 110 DEG C between road, it sees the following form (wt%) with reference to testing result.
C Mn Si P S Ni Cr Mo
Embodiment 1 0.047 1.63 0.28 0.011 0.008 1.05 0.12 0.55
Embodiment 2 0.051 1.56 0.35 0.012 0.007 1.23 0 0.33
Embodiment 3 0.048 1.35 0.45 0.012 0.007 1.45 0.15 0.32
The reference deposited metal mechanical property of three embodiments sees the following form.
The mechanical property of three embodiments is all greater than required value, and stable mechanical property of the present invention is described, intensity is suitable, and toughness is better.
Three embodiments adopt the reference deposited metal diffusible hydrogen content of gas chromatography to see the following form.
Above-mentioned each table absolutely proves: it is good that the present invention has all-position welding manufacturability, weld metal composition is reasonable, stable mechanical property, diffusible hydrogen content is low, meet the requirement of GB/T5118-2012E6215-G, AWSA5.5E9015-G standard, the welding that yield strength reaches 550MPa ocean platform E level steel plate can be met.

Claims (2)

1. a yield strength reaches the welding rod of 550MPa steel ocean platform welding, inner core in this welding rod adopts the H08E steel of low S, P and wraps up in outward in coating containing calcite and fluorite, rutile, silicon powder, iron powder, ferrosilicon, ferromanganese, ferrotianium, metallic nickel, crome metal, molybdenum-iron, soda ash and graphite, make this welding rod and use welding rod production equipment, welding rod production equipment conveniently mode of operation carries out, and it is characterized in that:
Require that the percentage chemical composition of H08E steel need meet: C≤0.010, Mn in 0.35 ~ 0.60, Si≤0.030, S≤0.005, P≤0.005;
Require that marmorean Task-size Controlling is at 60 orders, marmorean percentage chemical composition need meet: CaCO 3>=98.0, S≤0.010, P≤0.010;
Require that the Task-size Controlling of fluorite is at 60 orders, fluorite CaF 2>=95.0, SiO 2≤ 1.00, S≤0.010, P≤0.010;
Require that the Task-size Controlling of rutile is at 60 orders, the percentage chemical composition of rutile need meet: TiO 2>=95.0, S≤0.02, P≤0.02;
Require that the Task-size Controlling of silicon powder is at 100 orders, the percentage chemical composition of silicon powder need meet: SiO 2>=97.0, S≤0.010, P≤0.010;
Require that the Task-size Controlling of iron powder is at 60 orders, the percentage chemical composition of iron powder need meet: Fe >=98.0, S≤0.025, P≤0.020, C≤0.03;
Require that the Task-size Controlling of ferrosilicon is at 40 orders, the percentage chemical composition of ferrosilicon need meet: Si in 43.0 ~ 47.0, C≤0.020, S≤0.010, P≤0.010;
Require that the Task-size Controlling of ferromanganese is at 40 orders, the percentage chemical composition of ferromanganese need meet: C≤0.40, Mn in 80.0 ~ 87.0, S≤0.020, P≤0.150;
Require that the Task-size Controlling of ferrotianium is at 40 orders, the percentage chemical composition of ferrotianium need meet: Ti in 25 ~ 35, C≤0.1, S≤0.03, P≤0.05, Al≤8.0, Si≤4.5;
Require that the Task-size Controlling of metallic nickel is at 80 orders, the percentage chemical composition of metallic nickel need meet: Ni+Co >=99.5, C≤0.05, S≤0.005, P≤0.005;
The granularity requirements of above-mentioned crome metal controls at 80 orders, and the percentage chemical composition of crome metal need meet: C≤0.05, S≤0.05, P≤0.05, Si≤0.4, Al≤0.8, Cr >=98, Cu≤0.02;
Require that the Task-size Controlling of molybdenum-iron is at 80 orders, the percentage chemical composition of molybdenum-iron need meet: C≤0.15, P≤0.08, S≤0.10, Mo >=55.0;
Require that the Task-size Controlling of soda ash is at 60 orders, the Na in soda ash 2cO 3>=98.0;
Require that the Task-size Controlling of graphite is at 200 orders, the percentage chemical composition of graphite need meet: C >=95, S≤0.10, P≤0.010;
Under the cooperation of above-mentioned each requirement, wrapping up in coating proportioning by weight is outward: 25 ~ 34 parts, marble, 16 ~ 23 parts, fluorite, rutile 4 ~ 8 parts, silicon powder 5 ~ 7 parts, iron powder 20 ~ 24 parts, ferrosilicon 3 ~ 6 parts, 4 ~ 8 parts, ferromanganese, ferrotianium 1 ~ 2 part, metallic nickel 1.5 ~ 2.5 parts, crome metal 0 ~ 0.5 part, molybdenum-iron 1.0 ~ 1.5 parts, soda ash 1 ~ 2 part, 0.5 ~ 1.0 part, graphite;
To wrap up in outward each component mixing and stirring of coating, the purer sodium silicate 24% wrapping up in coating gross weight outside adding carries out mix and blend, the density domination of pure sodium silicate is at 1.40 ~ 1.45g/mm 3, afterwards by H08E steel with wrap up in coating outward and be jointly placed on welding rod production equipment and can prepare welding rod.
2. a kind of yield strength reaches the welding rod of 550MPa steel ocean platform welding according to claim 1, it is characterized in that: the percentage chemical composition of pure sodium silicate need meet: Na 2o>=8.2, SiO 2>=26.0, S≤0.010, P≤0.010, the modulus of pure sodium silicate is 3.2M, and the Baume degrees of pure sodium silicate is 43 °.
CN201510491459.0A 2015-08-12 2015-08-12 Electric welding rod for welding steel ocean platform with yield strength of 550MPa Pending CN105127617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510491459.0A CN105127617A (en) 2015-08-12 2015-08-12 Electric welding rod for welding steel ocean platform with yield strength of 550MPa

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510491459.0A CN105127617A (en) 2015-08-12 2015-08-12 Electric welding rod for welding steel ocean platform with yield strength of 550MPa

Publications (1)

Publication Number Publication Date
CN105127617A true CN105127617A (en) 2015-12-09

Family

ID=54713366

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510491459.0A Pending CN105127617A (en) 2015-08-12 2015-08-12 Electric welding rod for welding steel ocean platform with yield strength of 550MPa

Country Status (1)

Country Link
CN (1) CN105127617A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105458553A (en) * 2015-12-10 2016-04-06 无锡普瑞明思机械制造有限公司 Memory type welding electrode
CN105689918A (en) * 2016-03-23 2016-06-22 中国电建集团上海能源装备有限公司 Welding core and coating of rare earth treated 830 MPa grade low-alloy, high-strength and high-toughness basic electrode and preparation method thereof
CN106425164A (en) * 2016-12-15 2017-02-22 昆山京群焊材科技有限公司 High-strength steel electrode used for minus 50 DEG C low temperature spherical tank
CN106624467A (en) * 2017-03-03 2017-05-10 四川大西洋焊接材料股份有限公司 Auxiliary welding rod of Q500QE steel suitable for bridge and preparation method thereof
CN107088719A (en) * 2017-03-09 2017-08-25 洛阳双瑞特种合金材料有限公司 One kind can post weld heat treatment low-alloy steel electrode
CN107127480A (en) * 2017-06-16 2017-09-05 上海大西洋焊接材料有限责任公司 It is a kind of to be used for the low-alloy steel electrode of extra large work rack steel Q690 welding
CN107598414A (en) * 2017-10-26 2018-01-19 天津市金桥焊材集团有限公司 A kind of marine atmosphere corrosion-resisting steel welding rod
CN109483086A (en) * 2018-12-30 2019-03-19 柳州凯通新材料科技有限公司 A kind of medicine core of abrasion-resistant welding wire
CN110773899A (en) * 2019-10-22 2020-02-11 上海大西洋焊接材料有限责任公司 Low-alloy steel electrode for welding SA-508Gr.3Cl.2 steel for nuclear reactor pressure vessel
CN112975195A (en) * 2021-02-09 2021-06-18 天津市金桥焊材集团股份有限公司 600 MPa-level fire-resistant weather-resistant steel welding rod
CN115213581A (en) * 2021-04-21 2022-10-21 天津市金桥焊材集团股份有限公司 High-toughness welding rod for X80 grade pipeline steel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1523960A (en) * 1975-10-29 1978-09-06 Soudure Autogene Elect Flux coated welding electrodes
CN103264234A (en) * 2013-04-26 2013-08-28 中国船舶重工集团公司第七二五研究所 Heat-resistant steel welding rod with low temperature impact toughness
CN103447717A (en) * 2013-07-30 2013-12-18 中国船舶重工集团公司第七二五研究所 Low-alloy steel covered electrode for low-temperature steel welding
CN103878505A (en) * 2013-11-29 2014-06-25 中国船舶重工集团公司第七二五研究所 Root-welding welding rod capable of one-side welding and double-side forming

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1523960A (en) * 1975-10-29 1978-09-06 Soudure Autogene Elect Flux coated welding electrodes
CN103264234A (en) * 2013-04-26 2013-08-28 中国船舶重工集团公司第七二五研究所 Heat-resistant steel welding rod with low temperature impact toughness
CN103447717A (en) * 2013-07-30 2013-12-18 中国船舶重工集团公司第七二五研究所 Low-alloy steel covered electrode for low-temperature steel welding
CN103878505A (en) * 2013-11-29 2014-06-25 中国船舶重工集团公司第七二五研究所 Root-welding welding rod capable of one-side welding and double-side forming

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105458553A (en) * 2015-12-10 2016-04-06 无锡普瑞明思机械制造有限公司 Memory type welding electrode
CN105689918A (en) * 2016-03-23 2016-06-22 中国电建集团上海能源装备有限公司 Welding core and coating of rare earth treated 830 MPa grade low-alloy, high-strength and high-toughness basic electrode and preparation method thereof
CN106425164A (en) * 2016-12-15 2017-02-22 昆山京群焊材科技有限公司 High-strength steel electrode used for minus 50 DEG C low temperature spherical tank
CN106624467A (en) * 2017-03-03 2017-05-10 四川大西洋焊接材料股份有限公司 Auxiliary welding rod of Q500QE steel suitable for bridge and preparation method thereof
CN107088719B (en) * 2017-03-09 2019-04-09 洛阳双瑞特种合金材料有限公司 One kind can post weld heat treatment low-alloy steel electrode
CN107088719A (en) * 2017-03-09 2017-08-25 洛阳双瑞特种合金材料有限公司 One kind can post weld heat treatment low-alloy steel electrode
CN107127480B (en) * 2017-06-16 2019-06-07 上海大西洋焊接材料有限责任公司 A kind of low-alloy steel electrode for marine worker rack steel Q690 welding
CN107127480A (en) * 2017-06-16 2017-09-05 上海大西洋焊接材料有限责任公司 It is a kind of to be used for the low-alloy steel electrode of extra large work rack steel Q690 welding
CN107598414A (en) * 2017-10-26 2018-01-19 天津市金桥焊材集团有限公司 A kind of marine atmosphere corrosion-resisting steel welding rod
CN107598414B (en) * 2017-10-26 2020-07-17 天津市金桥焊材集团股份有限公司 Welding rod for marine atmosphere corrosion resistant steel
CN109483086A (en) * 2018-12-30 2019-03-19 柳州凯通新材料科技有限公司 A kind of medicine core of abrasion-resistant welding wire
CN110773899A (en) * 2019-10-22 2020-02-11 上海大西洋焊接材料有限责任公司 Low-alloy steel electrode for welding SA-508Gr.3Cl.2 steel for nuclear reactor pressure vessel
CN112975195A (en) * 2021-02-09 2021-06-18 天津市金桥焊材集团股份有限公司 600 MPa-level fire-resistant weather-resistant steel welding rod
CN115213581A (en) * 2021-04-21 2022-10-21 天津市金桥焊材集团股份有限公司 High-toughness welding rod for X80 grade pipeline steel

Similar Documents

Publication Publication Date Title
CN105127617A (en) Electric welding rod for welding steel ocean platform with yield strength of 550MPa
CN107931888B (en) High-strength steel welding rod for hydroelectric engineering and preparation method thereof
CN103447717B (en) A kind of low-temperature steel welding low-alloy steel electrode
CN105290645B (en) A kind of welding rod for high-strength steel welding and its preparation method and application
CN103934592B (en) A core wire for up to 55kg weathering steel welding rod, coating and welding rod thereof and preparation method
CN102039498B (en) Sintered flux for two phase stainless steel
CN108971795B (en) Electric welding rod for high-manganese austenite low-temperature steel
CN102500950B (en) Welding electrode for welding X65-grade pipeline steel
CN104400246A (en) Welding electrode for welding -50 DEG C low-temperature pressure container steel
CN102233489B (en) Two-phase stainless steel electrode
CN104889608B (en) A kind of structural steel welding alkaline flux-cored wire
CN103962745B (en) Acid slag system stainless steel electrode and coating thereof
CN104148824B (en) A kind of high tenacity flux-cored wire for electrogas arc welding
CN105537798B (en) CAP1400 main equipment core level diphasic stainless steel electrodes
CN107803608B (en) Martensite precipitation hardening stainless steel welding rod and preparation method and application thereof
CN110524136A (en) A kind of heat treatable ultralow temperature cracking resistance superhigh tenacity austenite stainless steel-made welding rod
CN105689918A (en) Welding core and coating of rare earth treated 830 MPa grade low-alloy, high-strength and high-toughness basic electrode and preparation method thereof
CN113414519B (en) ENi6620 nickel-based welding rod for alternating current and preparation method and welding method thereof
CN106392376A (en) Extremely-low-carbon high-corrosion-resistance austenitic stainless steel welding rod
CN111618479A (en) Welding rod for 5% Ni steel and preparation method thereof
CN105033502A (en) Low-temperature steel all-position welding rod for steel spherical tank welding and coating powder
CN106078004A (en) A kind of low temperature spherical tank ultralow-hydrogen low high-tenacity welding electrodes
CN110153586B (en) Ultralow-hydrogen moisture-absorption-resistant welding electrode with seamless flux-cored wire as core wire and preparation method thereof
CN105014263A (en) High-linear-energy low-temperature steel electrode for welding of large low-temperature steel spherical tank
CN109175781B (en) Flux-cored wire matched with EH500 steel for ship and ocean engineering

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20151209

RJ01 Rejection of invention patent application after publication