CN106808106B - A kind of 960MPa grade high-strength metal powder type medicine core gas shield welding wire - Google Patents
A kind of 960MPa grade high-strength metal powder type medicine core gas shield welding wire Download PDFInfo
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- CN106808106B CN106808106B CN201510869287.6A CN201510869287A CN106808106B CN 106808106 B CN106808106 B CN 106808106B CN 201510869287 A CN201510869287 A CN 201510869287A CN 106808106 B CN106808106 B CN 106808106B
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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
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Abstract
The present invention provides a kind of 960MPa grade high-strength metal powder type medicine core gas shield welding wires, the filling rate of welding wire is 16%-20%, relative to welding wire gross mass, each component is as follows by weight percentage: the C of 0.06%-0.12%, the Si of 0.8%-1.3%, the Cr of the Ni of the Mn of 1.8%-2.5%, 0.5%-1.0%, 0.4%-1.0%, the Mo of 0.2%-0.6%, the B of the Ti of the V of 0.01%-0.05%, 0.15%-0.4%, 0.01%-0.02%, the Cu of 0.1%-0.4%, the Ca of 0.02%-0.04%, 0.01% S below, 0.01% P below；Surplus is Fe and inevitable impurity.Welding wire of the present invention arc stability in the welding process, weld fumes is less, and deposition efficiency is high, has good welding usability, can be good at the welding for meeting Q960 intensity rank steel plate.
Description
Technical field
The invention belongs to field of welding material more particularly to a kind of 960MPa grade high-strength metal powder type medicine core gas shield weldings
Silk.
Background technique
Especially exist with the needs of construction for ultra high-strength structural steel using more and more with the development of economy
Engineering machinery field and building field.Ultra-high strength for engineering machinery is mainly used in the cantilever crane of concrete mixer, automobile with steel plate
The positions such as the pulling plate of the telescopic boom of crane and crawler crane；In construction(al)steel field, Europe and the U.S. will surpass
High strength steel is brought into Code for design of steel structures, and European building structure is with superhigh intensity steel specification also to unimach
Relevant regulations are carried out.It largely can reduce scantling and construction weight using unimach, correspondingly reduce welding
Workload and welding material dosage reduce the dosage and its construction workload of various coatings (antirust, fire prevention etc.), reduce steel construction
Cost.In addition, superhigh intensity steel steel construction can reduce rolled steel dosage, to greatly reduce to iron ore resource and the energy
Consumption, reduce destruction to environment, the Implement of sustainable development strategy, the Traditional Industrialization for changing high resource consumption developed
Mode establishes environmentally friendly national economic system and greatly facilitates effect.
With the application and popularization of unimach, the demand to the welding material of respective strengths rank is also increasingly compeled
It cuts.With advances in technology with the continuous renewal of steel material, people understand effect of the various microalloys in steel material
It is more and more thorough.The welding wire of the superhigh intensity rank is developed according to the action principle of microalloy, deposited metal not only has
There is very high intensity, and -40 DEG C of low-temperature impact toughness are also very good.
It can be found by the retrieval to pertinent literature and patent, involved in existing issued invention and document
Its intensity of welding wire is generally lower than the welding wire deposited metal intensity in the present invention, and not up to the art of this patent scheme is achieved
960MPa rank, and in welding wire using way there is not been reported the of Ca microalloying and the characteristics of technical solution of the present invention
It is deposited metal yield strength up to 960MPa, welding wire uses the microalloying of a variety of micro alloying elements, especially Ca,
Guarantee the toughness that welding wire deposited metal is greatly enhanced while welding wire deposited metal high intensity；In addition, in the present invention
Welding wire use metal powder type flux-cored wire form, due to high-strength solid welding wire drawing difficulty generally with higher, and use
This form of the welding wire of metal powder type can substantially reduce the manufacture difficulty of welding wire
Summary of the invention
It is provided a kind of small etc. with welding arc stablility, splashing it is an object of the invention to overcome the above problem and deficiency
The metal powder type medicine core gas shield welding wire of the 960MPa grade of excellent welding usability, the superelevation which is suitable for 960MPa rank are strong
Spend the welding of steel for engineering machinery and construction(al)steel etc..
The object of the present invention is achieved like this:
A kind of 960MPa grade high-strength metal powder type medicine core gas shield welding wire, which is characterized in that the filling rate of welding wire is 16%-
20%, relative to welding wire gross mass, each component is as follows by weight percentage: the C of 0.06%-0.12%, 0.8%-1.3%'s
The Mo of the Cr of the Ni of the Mn of Si, 1.8%-2.5%, 0.5%-1.0%, 0.4%-1.0%, 0.2%-0.6%, 0.01%-
The Cu of the B of the Ti of 0.05% V, 0.15%-0.4%, 0.01%-0.02%, 0.1%-0.4%, 0.02%-0.04%'s
Ca, 0.01% S below, 0.01% P below；Surplus is Fe and inevitable impurity.
The principle of the ingredient design of high duty metal powder type medicine core gas shield welding wire of the present invention is as follows:
C: meeting gap is solid-solution in ferrite in weld seam；C element content has the obdurability and its tissue composition of weld seam
Large effect, strengthening effect inhibit the generation of pro-eutectoid ferrite it is obvious that weld strength can be significantly improved, and promote
The formation of acicular ferrite；But it will substantially reduce impact flexibility and improve ductile-brittle transition temperature, to make welding seam toughness greatly
It reduces.So generally low-carbon is used to design in high-strength steel welding.In addition the raising of carbon content is by the welding usability to welding wire
Can be unfavorable, it is mainly manifested in the increase of spatter and weld fumes, therefore, 0.06%-0.12% in the present invention.
Si: playing the role of deoxidation and strengthens weld seam matrix strength.The harden ability of weld metal can be improved, inhibit pro-eutectoid
Ferritic generation promotes the formation of acicular ferrite；But Si too high levels can be such that plasticity and toughness declines, therefore, the present invention
Middle Si 0.8%-1.3%.
Mn: being the effective element of weld seam Strengthening and Toughening, be conducive to deoxidation in weld seam, prevents the iron sulfide for causing fire check
Formation；The harden ability that weld metal can be improved inhibits the generation of pro-eutectoid ferrite, promotes the formation of acicular ferrite.
The intensity that steel can be improved slackens or eliminates the adverse effect of sulphur, therefore, Mn 1.8%-2.5% in the present invention.
Ni: being a kind of common element for obtaining superior low-temperature toughness.Harden ability can be improved in it, promotes acicular ferrite
It is formed, the intensity and toughness of weld seam can be improved, especially middle low-temperature impact toughness reduces ductile-brittle transition temperature, therefore, in the present invention
Ni 0.5%-1.0%.
Cr: being conducive to improve the content of acicular ferrite, reduces pro-eutectoid ferrite, fining ferrite grains can be with
The carbide of Dispersed precipitate is formed with carbon, so that weld strength toughness is improved, therefore, Cr 0.4%-1.0% in the present invention.
Mo: being the essential element for obtaining high-intensitive weld metal；It has good refinement brilliant as a kind of high-melting-point substances
Grain effect, and plasticity and toughness are damaged less while improving intensity.The harden ability that steel can significantly be improved, prevents Temper brittleness
Property, therefore, Mo0.2%-0.6% in the present invention.
V: can refine the grain structure of steel, and the intensity and toughness for improving steel can increase when it is when high temperature dissolves in austenite
The harden ability of steel；Conversely, its harden ability will be reduced in the presence of it is with carbide morphology, and therefore, V in the present invention
0.01%-0.05%.
Ti: being a kind of V-N steel element；Ti and C, N affinity are stronger, are easily formed precipitated phase and become forming core matter
The pinning particle of point and crystal boundary achievees the effect that the grain structure for refining steel, to improve the intensity and toughness of weld seam.Ti also with S
Have compared with strong affinity, reach nodularization nonmetal inclusion and improves the uneven purpose of performance, therefore, Ti 0.15%- in the present invention
0.4%.
B: Ti, B, which is added, in joint in weld seam can inhibit the transformation of pro-eutectoid ferrite, and expand acicular ferrite transformation
Temperature range, and then can get a large amount of acicular ferrite in weld seam, substantially improve the obdurability matching of weld metal, because
This, B 0.01%-0.02% in the present invention.
Cu: improving weld strength in a manner of solution strengthening, and reduces acicular ferrite initial transition temperature, improves needle-shaped iron
Ferritic content, so as to improve the intensity and toughness of weld seam, therefore, Cu 0.1%-0.4% in the present invention.
Ca: growing up for second phase particles TiN, TiC etc. can be prevented containing suitable Ca in welding wire, to make to analyse in weld seam
Tiny second phase particles TiN, TiC etc. of more Dispersed precipitates out, can largely improve the toughness of weld seam, therefore, this
Ca 0.02%-0.04% in invention.
S and P: for harmful element, its content is controlled to improve weld seam degree of purity and welding performance.S and P are easily segregated；Easily
In in intercrystalline formation nonmetal inclusion and Second Phase Particles.The plasticity and toughness that can make steel are decreased obviously, and are answered in welding wire
The content of strict control S, P, therefore, in the present invention, 0.01% S below, 0.01% P below.
According to above each alloys producing feature, gropes through test of many times, form the technical solution in the present invention.
The metal powder type medicine core gas shield welding wire that a kind of yield strength reaches 960MPa is finally obtained, the matching of deposited metal obdurability is good,
Welding usability is good.
The beneficial effects of the present invention are technical solution uses a variety of micro-alloying technologies, in particular by Ca microalloy
Change, can have good low-temperature flexibility, the tough matching of weld metal while guaranteeing weld metal with higher-strength
Property is good.In addition welding wire arc stability in the welding process, weld fumes is less, and deposition efficiency is high, has good welding
Craftsmanship can be good at the welding for meeting Q960 intensity rank steel plate.In addition, the technical solution in the present invention uses metal powder
Type flux-cored wire pattern can substantially reduce the drawing difficulty of welding wire.
Specific embodiment
Below by embodiment, the present invention is further illustrated.
Ingredient of the embodiment of the present invention is shown in Table 1.Soldering test uses 80%Ar+20%CO2It is protected, the embodiment of the present invention
Deposited metal mechanical property be shown in Table 2.
1 ingredient of the embodiment of the present invention (wt%) of table
| Embodiment | 1 | 2 | 3 | 4 | 5 |
| C | 0.07 | 0.10 | 0.11 | 0.09 | 0.08 |
| Si | 0.85 | 0.91 | 0.82 | 1.01 | 1.11 |
| Mn | 1.85 | 2.03 | 1.83 | 2.31 | 2.12 |
| Ni | 0.72 | 0.90 | 0.52 | 0.93 | 0.67 |
| Cr | 0.50 | 0.80 | 0.41 | 0.84 | 0.68 |
| Mo | 0.40 | 0.50 | 0.22 | 0.52 | 0.37 |
| V | 0.020 | 0.040 | 0.015 | 0.038 | 0.029 |
| Ti | 0.20 | 0.30 | 0.16 | 0.28 | 0.36 |
| B | 0.015 | 0.012 | 0.012 | 0.019 | 0.018 |
| Cu | 0.20 | 0.30 | 0.13 | 0.37 | 0.27 |
| Ca | 0.025 | 0.030 | 0.022 | 0.028 | 0.035 |
| S | 0.008 | 0.007 | 0.007 | 0.006 | 0.008 |
| P | 0.007 | 0.009 | 0.007 | 0.008 | 0.004 |
The deposited metal mechanical property of 2 embodiment of the present invention of table
By the data of table 2 it is found that may make the yield strength of welding wire not less than 960MPa, tensile strength using the present invention
Not less than 1050MPa, elongation percentage is not less than 14%, and the impact flexibility of -40 DEG C of weld seams is not less than 60J, welding wire deposited metal it is strong
Tough matching is good.
Claims (1)
1. a kind of 960MPa grade high-strength metal powder type medicine core gas shield welding wire, which is characterized in that the filling rate of welding wire is 16%-
20%, relative to welding wire gross mass, each component is as follows by weight percentage: the C of 0.06%-0.12%, 0.8%-1.3%'s
The Mo of the Cr of the Ni of the Mn of Si, 2.03%-2.5%, 0.5%-1.0%, 0.4%-1.0%, 0.2%-0.6%, 0.01%-
The Cu of the B of the Ti of 0.05% V, 0.28%-0.4%, 0.01%-0.02%, 0.1%-0.4%, 0.02%-0.04%'s
Ca, 0.01% S below, 0.01% P below；Surplus is Fe and inevitable impurity.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510869287.6A CN106808106B (en) | 2015-12-02 | 2015-12-02 | A kind of 960MPa grade high-strength metal powder type medicine core gas shield welding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510869287.6A CN106808106B (en) | 2015-12-02 | 2015-12-02 | A kind of 960MPa grade high-strength metal powder type medicine core gas shield welding wire |
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| CN106808106A CN106808106A (en) | 2017-06-09 |
| CN106808106B true CN106808106B (en) | 2019-04-26 |
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| CN201510869287.6A Active CN106808106B (en) | 2015-12-02 | 2015-12-02 | A kind of 960MPa grade high-strength metal powder type medicine core gas shield welding wire |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112935626B (en) * | 2021-02-07 | 2022-12-02 | 天津市金桥焊材集团股份有限公司 | Metal powder cored flux-cored wire for welding fire-resistant and weather-resistant steel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2310550C1 (en) * | 2006-04-06 | 2007-11-20 | Николай Васильевич Павлов | Welding wire composition |
| CN101234457A (en) * | 2008-02-28 | 2008-08-06 | 武汉钢铁(集团)公司 | High-strength high ductility gas protecting welding stick |
| CN101704170A (en) * | 2009-11-03 | 2010-05-12 | 武汉钢铁(集团)公司 | High-toughness gas shielded welding wire and preparation method and use method thereof |
| CN102152025A (en) * | 2011-05-04 | 2011-08-17 | 武汉钢铁(集团)公司 | Gas shielded welding wire with 900MPa tensile strength |
| CN103331529A (en) * | 2013-06-14 | 2013-10-02 | 武汉钢铁(集团)公司 | Mixed gas protection welding wire with tensile strength of no less than 1100 MPa and using method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4879696B2 (en) * | 2006-10-13 | 2012-02-22 | 新日本製鐵株式会社 | High yield strength, high toughness, flux-cored wire for gas shielded arc welding |
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- 2015-12-02 CN CN201510869287.6A patent/CN106808106B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2310550C1 (en) * | 2006-04-06 | 2007-11-20 | Николай Васильевич Павлов | Welding wire composition |
| CN101234457A (en) * | 2008-02-28 | 2008-08-06 | 武汉钢铁(集团)公司 | High-strength high ductility gas protecting welding stick |
| CN101704170A (en) * | 2009-11-03 | 2010-05-12 | 武汉钢铁(集团)公司 | High-toughness gas shielded welding wire and preparation method and use method thereof |
| CN102152025A (en) * | 2011-05-04 | 2011-08-17 | 武汉钢铁(集团)公司 | Gas shielded welding wire with 900MPa tensile strength |
| CN103331529A (en) * | 2013-06-14 | 2013-10-02 | 武汉钢铁(集团)公司 | Mixed gas protection welding wire with tensile strength of no less than 1100 MPa and using method thereof |
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