CN104400250B - A kind of flux-cored - Google Patents

A kind of flux-cored Download PDF

Info

Publication number
CN104400250B
CN104400250B CN201410539664.5A CN201410539664A CN104400250B CN 104400250 B CN104400250 B CN 104400250B CN 201410539664 A CN201410539664 A CN 201410539664A CN 104400250 B CN104400250 B CN 104400250B
Authority
CN
China
Prior art keywords
flux
cored
borax
low
welding
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.)
Active
Application number
CN201410539664.5A
Other languages
Chinese (zh)
Other versions
CN104400250A (en
Inventor
吴光辉
张少健
王天虎
肖庆华
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.)
WUHAN TIEMIAO WELDING MATERIAL CO Ltd
Original Assignee
WUHAN TIEMIAO WELDING MATERIAL CO Ltd
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 WUHAN TIEMIAO WELDING MATERIAL CO Ltd filed Critical WUHAN TIEMIAO WELDING MATERIAL CO Ltd
Priority to CN201410539664.5A priority Critical patent/CN104400250B/en
Publication of CN104400250A publication Critical patent/CN104400250A/en
Application granted granted Critical
Publication of CN104400250B publication Critical patent/CN104400250B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24Selection of soldering or welding materials proper
    • B23K35/30Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053Fe as the principal constituent
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B23K35/0261Rods, electrodes, wires
    • B23K35/0266Rods, electrodes, wires flux-cored
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36Selection 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
    • B23K35/3601Selection 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
    • B23K35/3608Titania or titanates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36Selection 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
    • B23K35/368Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials

Abstract

The invention discloses a kind of flux-cored, it is characterised in that drug core component and weight/mass percentage composition thereof be: rutile 35~45%;Alkali metal oxide 1~5%;Low-carbon ferromanganese 15~25%;Fluorite 4~8%;Aluminium oxide 3~10%;Almag 2~6%;Ferrosilicon 3~10%;Ferrotianium 3~8%;Borax 0.5~2%;Nikel powder 6~9%;Surplus is iron powder.The flux-cored wire of the present invention uses CO2Shielding gas, has excellent welding technological properties, deposited metal and a welding point combination property: yield strength >=460MPa;Tensile strength >=570MPa;Percentage elongation >=22%;Under the conditions of 60 DEG C, Akv >=50J.

Description

A kind of flux-cored
Technical field
The present invention relates to welding material and manufacture field, be specifically related to a kind of low-temperature steel CO2Gas shielded welding Use flux-cored wire.
Background technology
Flux-cored wire has good welding technological properties and welding efficiency, in the industry such as shipbuilding, ocean engineering Obtain more and more application, in offshore oil drilling platform is built, need to use low-temperature steel welding material, especially Its flux-cored wire needing there is favorable low-temperature impact toughness.And Most current CO2Gas shielded welding is used Flux-cored wire can only meet the impact test requirement of-40 DEG C of temperatures above, and deposited metal yield strength rank is the highest In 400MPa, it is impossible to meet the ultra-high tensile steel welding having-60 DEG C of impact flexibility to require.
CN101450426B discloses " flux-cored ", medicated powder composition include rutile, wollastonite, Silicomangan, iron powder 16~21, nikel powder, cryolite, Anhydrite, ferrotianium, ferro-boron, mid-carbon fe-mn, magnesium Sand, quartz and fluorite.-40 DEG C of low-temperature impact works of its deposited metal (using conventional detection technique) meansigma methods is 78J (joule).
Flux-cored wire disclosed in CN103692110A, medicated core consists of: rutile, fluoride, other Slag former, strong deoxidizer, weak deoxidizer, alloying constituent and the iron powder of surplus, wherein containing nikel powder in alloying constituent. This flux-cored wire yield strength grade is 375Mpa, and deposited metal low-temperature impact test temperature is-40 DEG C.
Summary of the invention
In order to solve the problems referred to above of the prior art, the invention provides a kind of mechanical property and can meet-60 DEG C Impact flexibility requirement, and it is higher flux-cored to meet yield strength grade.If no special instructions, Percentage composition in the present invention is weight/mass percentage composition.
It is flux-cored that the present invention provides, and drug core component and weight/mass percentage composition thereof be: rutile 35~45%;Alkali metal oxide 1~5%;Low-carbon ferromanganese 15~25%;Fluorite 4~8%;Aluminium oxide 3~ 10%;Almag 2~6%;Ferrosilicon 3~10%;Ferrotianium 3~8%;Borax 0.5~2%;Nikel powder 6~ 9%;Surplus is iron powder.Medicated core includes inevitable impurity.
Through groping analysis and experiment in a large number, on the premise of ensureing to have good welds technique, the present invention adopts Take is Al-Mg-Ti-Si-Mn combined deoxidation mode, Al, Mg, Ti, Si, Mn derive from almag, Ferrotianium, ferrosilicon, low-carbon ferromanganese.Its principle is: aluminum, magnesium, titanium, silicon, manganese are big with the affinity of oxygen element Yu Tie, preferential and oxygen generation oxidation reaction, reduces the oxidation of ferrum, has part silicon, manganese to become as alloy simultaneously Divide and be transitioned in weld seam, so that it is guaranteed that weld metal mechanical property reaches requirement.
In medicated core, rutile main component is TiO2, fluxing effect.When rutile is less than 35%, vertical position welding difficulty is grasped Making, molding is bad;When rutile is more than 45%, slag fusing point raises, and appearance of weld is deteriorated.
Alkali metal oxide is mainly used in regulating slag basicity, improves weld metal impact flexibility.Alkali metal oxygen When compound is less than 1%, do not play the effect improving toughness;During more than 5%, slag fusing point uprises, and slag gathers Collecting agglomerating, appearance of weld is deteriorated, and change of splashing during welding is changeable greatly.
Fluorite contains CaF2, welding can reduce weld hydrogen content with dehydrogenation, reduce the machine producing cold crack Rate, when content is less than 4%, dehydrogenation is inconspicuous;During more than 8%, in welding process, molten drop becomes big, flies Spattering and increase, welding procedure is deteriorated.
Aluminium oxide, as slag former, regulates slag fusing point, improves the capability of welding vertically upwards energy, and content is less than 3%, does not has There is effect;More than 10%, slag fusing point is too high, and vertical position welding shapes and is deteriorated.
Almag as deoxidizer, can reduce a small amount of boron from Borax simultaneously, and appropriate boron can refine weld seam group Knit, improve weld seam low-temperature impact toughness.
Ferrosilicon, ferrotianium, as deoxidizer, have alloying effect simultaneously, it is ensured that deposited metal yield strength etc. Level meets 460MPa.When content is too much, yield strength is too high, and weld seam impact toughness declines, the most then weld Seam intensity does not reaches requirement.
Nikel powder contains a large amount of Ni, uses as alloying agent.Weld seam contains appropriate Ni, it is possible to decrease fragility turns Temperature, makes low-temperature impact toughness meet requirement.
Preferably, described medicated core quality accounts for the 12~18% of flux-cored wire gross mass.
Preferably, one or both during described alkali metal oxide is magnesium oxide and calcium oxide.Magnesium oxide and In the mixture of calcium oxide, both can be arbitrarily than.
Preferably, weight/mass percentage composition≤1.0% of carbon in described low-carbon ferromanganese;The mass ratio Mn:C of manganese and carbon ≥80:1.Low-carbon ferromanganese contains substantial amounts of Mn and a small amount of C (≤1.0%), during Mn/C >=80, and can be true Protect Mn/C >=25 in weld seam, be beneficial to weld metal and form acicular ferrite, thus ensure weld metal low temperature Impact flexibility.Additionally, low-carbon ferromanganese can participate in deoxidation, there is alloying effect.
Preferably, described Borax is to process through 400 DEG C of bakings.
Preferably, the described Borax baking time is 60 minutes, and the Borax after baking crosses 80 mesh sieves.
Preferably, the sheetmetal wrapping up medicated core in flux-cored wire is SPCC steel band.
The method have the advantages that
1, the flux-cored wire of the present invention uses CO2Shielding gas, has excellent welding technological properties, Deposited metal and welding point combination property: yield strength >=460MPa;Tensile strength >=570MPa;Stretch Long rate >=22%;Under the conditions of-60 DEG C, Akv >=50J.
2, for impact flexibility-60 DEG C, the requirement of Akv >=50J, the flux-cored wire weld metal of the present invention Ni content 1.2-1.6%, has saved the nickel resources of preciousness.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described, so that those skilled in the art is permissible It is more fully understood that the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Embodiment flux-cored wire formula is shown in Table 1, and sheetmetal is SPCC steel band, uses conventional flux-cored wire manufacture Technique.
Wherein, the alkali metal oxide of embodiment 1~3 is magnesium oxide, the alkali metal oxide of embodiment 4~6 For calcium oxide, the mixture that alkali metal oxide is magnesium oxide and calcium oxide of embodiment 7~9.Embodiment 4, In 5 and 9, low-carbon ferromanganese C content≤1.0% of flux-cored wire, Borax processes through baking;Wherein implement The baking time of example 4 and 5 is 60 minutes, and will bakee after Borax cross 80 mesh sieves.
Table 1 flux-cored wire formula (mass percent)
Table 2 show chemical composition and the mechanical property of embodiment flux-cored wire deposited metal.Welding condition: protect Protect gas CO2, purity 99.95%;Welding current 230~240A;Weldingvoltage 26~27V;Speed of welding ~30mm/min.
The chemical composition of table 2 deposited metal and mechanical property
From the chemical composition of table 1 and table 2 illustrated embodiment it follows that the flux-cored wire of the present invention uses CO2 Shielding gas, deposited metal and welding point combination property: yield strength >=460MPa;Tensile strength ≥570MPa;Percentage elongation >=22%;Under the conditions of-60 DEG C, Akv >=50J.
Embodiment described above is only the preferred embodiment lifted by absolutely proving the present invention, the present invention's Protection domain is not limited to this.Equivalent that those skilled in the art are made on the basis of the present invention substitute or Conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.

Claims (7)

1. one kind flux-cored, it is characterised in that drug core component and weight/mass percentage composition thereof be: gold Red stone 35~45%;Alkali metal oxide 1~5%;Low-carbon ferromanganese 15~25%;Fluorite 4~8%;Oxidation Aluminum 3~10%;Almag 2~6%;Ferrosilicon 3~10%;Ferrotianium 3~8%;Borax 0.5~2%;Nickel Powder 6~9%;Surplus is iron powder.
The most according to claim 1 flux-cored, it is characterised in that described medicated core quality accounts for The 12~18% of flux-cored wire gross mass.
The most according to claim 1 flux-cored, it is characterised in that described alkali metal aoxidizes Thing is one or both in magnesium oxide and calcium oxide.
The most according to claim 1 flux-cored, it is characterised in that in described low-carbon ferromanganese Weight/mass percentage composition≤1.0% of carbon;Mass ratio Mn:C >=the 80:1 of manganese and carbon.
The most according to claim 1 flux-cored, it is characterised in that described Borax is for passing through 400 DEG C of bakings process.
It is the most according to claim 5 flux-cored, it is characterised in that when described Borax bakees Between be 60 minutes, the Borax after baking crosses 80 mesh sieves.
The most according to claim 1 flux-cored, it is characterised in that the sheetmetal of parcel medicated core For SPCC steel band.
CN201410539664.5A 2014-10-13 2014-10-13 A kind of flux-cored Active CN104400250B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410539664.5A CN104400250B (en) 2014-10-13 2014-10-13 A kind of flux-cored

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410539664.5A CN104400250B (en) 2014-10-13 2014-10-13 A kind of flux-cored

Publications (2)

Publication Number Publication Date
CN104400250A CN104400250A (en) 2015-03-11
CN104400250B true CN104400250B (en) 2016-12-07

Family

ID=52637949

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410539664.5A Active CN104400250B (en) 2014-10-13 2014-10-13 A kind of flux-cored

Country Status (1)

Country Link
CN (1) CN104400250B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104959748A (en) * 2015-07-02 2015-10-07 武汉铁锚焊接材料股份有限公司 Flux-cored wire special for maritime work low-temperature high-strength steel
CN106695175A (en) * 2015-08-11 2017-05-24 江苏立新焊接材料有限公司 Method for infiltrating trace boron elements into weld metal and welding method
CN106513946A (en) * 2015-09-14 2017-03-22 江苏立新焊接材料有限公司 Method for seeping trace of boron into weld metal through electrode coating or flux core of flux-cored wire
CN106514052A (en) * 2015-09-14 2017-03-22 江苏立新焊接材料有限公司 Welding method for doping trace boron element into weld metal
CN106041362B (en) * 2016-08-03 2018-08-17 武汉铁锚焊接材料股份有限公司 A kind of nickel content is flux-cored less than 1%
CN106141497B (en) * 2016-08-03 2018-10-16 武汉铁锚焊接材料股份有限公司 A kind of 685MPa grade super strengths steel flux-cored wire
CN106041363B (en) * 2016-08-03 2019-02-12 武汉铁锚焊接材料股份有限公司 A kind of low temperature unimach flux-cored wire
CN106624422A (en) * 2016-12-15 2017-05-10 昆山京群焊材科技有限公司 56kg-grade flux-cored wire suitable for stress relief treatment after welding
CN109623193B (en) * 2018-12-26 2021-02-09 中国船舶重工集团公司第七二五研究所 Low-hydrogen high-toughness seamless flux-cored wire for low-temperature steel and preparation method thereof
CN111940948B (en) * 2020-07-24 2021-03-19 天津沃盾耐磨材料有限公司 Environment-friendly high-wear-resistance flux-cored wire and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251711A (en) * 1978-02-25 1981-02-17 Nippon Steel Corporation Low-hydrogen coated electrode
CN101780609A (en) * 2009-01-15 2010-07-21 山东聚力焊接材料有限公司 Slag-free flux-cored wire
CN101850484A (en) * 2010-06-23 2010-10-06 南通晨曦焊业有限公司 Flux-cored wire of low-temperature steel
CN102328156A (en) * 2011-08-26 2012-01-25 武汉铁锚焊接材料股份有限公司 Reduced ilmenite type flux-cored wire
CN103692110A (en) * 2013-12-13 2014-04-02 天津三英焊业股份有限公司 Gas-shielded flux-cored wire for maritime engineering

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251711A (en) * 1978-02-25 1981-02-17 Nippon Steel Corporation Low-hydrogen coated electrode
CN101780609A (en) * 2009-01-15 2010-07-21 山东聚力焊接材料有限公司 Slag-free flux-cored wire
CN101850484A (en) * 2010-06-23 2010-10-06 南通晨曦焊业有限公司 Flux-cored wire of low-temperature steel
CN102328156A (en) * 2011-08-26 2012-01-25 武汉铁锚焊接材料股份有限公司 Reduced ilmenite type flux-cored wire
CN103692110A (en) * 2013-12-13 2014-04-02 天津三英焊业股份有限公司 Gas-shielded flux-cored wire for maritime engineering

Also Published As

Publication number Publication date
CN104400250A (en) 2015-03-11

Similar Documents

Publication Publication Date Title
CN104400250B (en) A kind of flux-cored
CN105269174B (en) A kind of ocean engineering 460MPa grades of flux-cored wires and its application
CN103042321B (en) Metal powder-cored type nitrogen austenite stainless steel flux-cored wire
CN104959748A (en) Flux-cored wire special for maritime work low-temperature high-strength steel
CN107350659B (en) 460MPa grade seamless flux-cored wire and manufacturing method suitable for all-position welding
CN104493374A (en) Austenitic stainless steel welding wire and welding technology thereof
CN103056549B (en) Alkaline CO2 gas protection dilute alloy heat resistant steel flux-cored wire
CN107931888A (en) Hydroelectric project high tensile steel electrode and preparation method thereof
CN106825992B (en) A kind of 620MPa grade low-temp steel flux-cored wire and its welding method
CN107081537B (en) A kind of engineering machinery High Speed Welding metal powder-cored wire and its welding method
CN106736013A (en) A kind of low-alloy high-strength steel welding coating welding wire and preparation method
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
CN101905393B (en) Solid welding wire for high-toughness structural steel
CN106078004A (en) A kind of low temperature spherical tank ultralow-hydrogen low high-tenacity welding electrodes
CN107921590A (en) Flux-cored wire for gas-shielded arc welding
CN107283084A (en) A kind of marine atmosphere corrosion-resisting steel submerged arc flux-cored wire
CN106078006A (en) A kind of 550MPa high-strength steel ultralow-hydrogen low high tenacity seamless flux-cored wire
CN104741824B (en) Flux-cored wire for welding D406A steel and manufacturing method thereof
CN107900556A (en) A kind of austenitic stainless steel self-protection flux-cored wire
CN106141497B (en) A kind of 685MPa grade super strengths steel flux-cored wire
CN106041363B (en) A kind of low temperature unimach flux-cored wire
CN103551758B (en) A kind of nuclear power engineering high-toughness metal powder type flux-cored wire
CN105665958B (en) A kind of welding rod mating suitable for 690MPa grades of rack steels of ocean platform
CN107914097A (en) High-strength steel gas shield welding flux-cored wire
CN107914100A (en) High-strength steel gas shield welding flux-cored wire

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant