CN106984916A - A kind of ER50 G are without copper plating soldering wire - Google Patents
A kind of ER50 G are without copper plating soldering wire Download PDFInfo
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- CN106984916A CN106984916A CN201710303587.7A CN201710303587A CN106984916A CN 106984916 A CN106984916 A CN 106984916A CN 201710303587 A CN201710303587 A CN 201710303587A CN 106984916 A CN106984916 A CN 106984916A
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- Prior art keywords
- copper plating
- steel
- wire
- welding
- plating soldering
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/3073—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
- 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
Abstract
The invention discloses a kind of ER50 G without copper plating soldering wire, its chemical composition is by mass percentage：C0.03~0.10%, Mn 0.90~2.00%, Si 0.3~1.15%, S≤0.010%, P≤0.010~0.30%, Cr 0.10~0.25%, Cu 0.30~0.50%, remaining is Fe；Characterized in that, the ER50 G also contain Ni 0.60~1.20%, Mo 0.20~0.60%, Ti0.02~0.08%, B 0.001~0.008% without copper plating soldering wire.Welding wire of the present invention has preferable atmospheric corrosion resistance, and good welding performance, because the welding wire need not carry out copper facing, can greatly save production cost, be that enterprise brings unexpected, considerable economic and social benefit.
Description
Technical field
The present invention relates to a kind of welding material, more particularly to a kind of ER50-G is without copper plating soldering wire.
Background technology
ER50-G is a series of gas shielded arc welding carbon steel, low alloy steel welding wire, standard GB/T/T
Regulation ER50-G has 5 kinds of different chemical compositions in 8110-2008 gas shielded arc weldings carbon steel, low alloy steel welding wire, such as
Shown in table 1, unit (%)：
Table 1
There are following provisions in GB/T 8110-2008：
If the copper content sum in the copper content and copper plate in the 1, coppered welding wire, welding wire not should be greater than 0.5%；
2nd, manganese can be more than 2.0%, but often increases by 0.05% manganese, and greatest carbon content should reduce by 0.01%；
3rd, Nb (Cb) 0.02~0.10%, N 20.03~0.07%, (Mn+Ni)≤1.50%；
4th, monodrome is maximum in table.
The serial welding wire is microalloying welding wire, wherein except ER50-2 is micro- using five kinds of elements progress of Mo, V, Ti, Zr, Al
Alloying, remaining carries out microalloying using Mo, V, Ti.
ER50-G deposited metal mechanical properties are shown in as shown in table 2
Table 2
ER50-G is tensile strength >=480MPa grade high-strength microalloy gas shield welding wires, and protective gas is 100%
CO2, or 80%Ar+CO2.Due to containing appropriate Ti, with refinement molten drop, stabilising arc and reduction splashing effect.It can refine simultaneously
Weld grain, improves the low-temperature impact toughness of deposited metal.It is widely used in ship, pipeline, engineering machinery, container, oil
Each field 500- such as work, boiler and pressure vessel, bridge, handling equipment, power station, vehicle, skyscraper, steel construction
The welding of 550MPa level low alloy high-strength steel, such as X60, X65,18Nb, 12~16Mn series materials.It can meet under the conditions of -60 DEG C
Application.
Powered, giving property and anti-corrosion to ensure welding wire etc., typically implement copper facing on its surface.
But there is problems with copper plating soldering wire：
(1) copper coating is softer than welding wire surface, due to the friction between welding wire and tip, and copper facing is inevitably from welding wire table
Face is peeled off, and copper scale comes off in conductive nozzle, can induce clogging, and increase welding unstability easily produces splashing；
(2) fusing point of copper is low, is 1083 DEG C, is easily evaporated under the superhigh temperature of welding arc, so as to produce substantial amounts of copper
Cigarette.U.S.'s occupation proposes that the safe level of copper cigarette is 0.2mg/m3 with the paper that environmental sanitation association delivers.
(3) Copper-electroplating waste Liquor can severe contamination environment.
Therefore, in the urgent need to exploitation can meet the non-coppering wire with copper plating soldering wire advantage of various characteristics, and ensure
Powered, giving property and rust resistance.
At present about the research and development of non-coppering wire, mainly pass through research, the exploitation of surface conditioning agent to welding wire surface
And the aspect of alloying element etc. three is added, to improve welding wire surface oxidation resistance, giving property and arc stability.
Mainly have in terms of the research of welding wire surface and surface conditioning agent：After polytetrafluoroethylene (PTFE) and water or ethanol mix suspending
Apply to improve the technology of giving property and arc stability；MoS2 is applied, WS2, C improves arc stability, weldability, energization
The technology of property and rust-preventing characteristic；Potassium compound, sulfide, polyisobutene is applied to reduce the technology of splashing；Using by mineral hydrocarbon
Oil improves the technology of weldability with the miscella of vegetable oil composition；Utilize the ester being made up of higher fatty acids and senior monovalent alcohol
One or both of class greasing substance improves the technology of giving property and resistance to rust；Using the non-coppering wire of this kind of measure,
All characteristics needed for welding wire are not met.Particularly, in order to which the performance for improving non-coppering wire is thin in welding wire surface coating
In the case of powder, the powder for being coated in welding wire surface is inevitably generated flue dust.It is additionally, since and is difficult to the powder of coating
Control is in appropriate level, and the powder for being coated in welding wire surface is uneven, so as to increase splashing quantity.
For ER50-G, not yet there is surface without coating without copper plating soldering wire at present, therefore in the urgent need to developing a kind of surface
Without coating without copper facing ER50-G welding wires.
In view of above-mentioned existing atmospheric corrosion resistance ferrous alloy without copper plating soldering wire above shortcomings, the present inventor's base
Practical experience and professional knowledge abundant for many years is manufactured in being engaged in such product design, and coordinates the utilization of scientific principle, is actively subject to
Research and innovation, it is a kind of without copper facing ER50-G welding wires to found, by constantly research, design, and through studying and improving repeatedly
Afterwards, the present invention having practical value is created finally.
The content of the invention
In view of this, the embodiment of the present invention expect to provide it is a kind of with good atmospheric corrosion resistance without copper facing
ER50-G welding wires.
The object of the invention to solve the technical problems is realized using following technical scheme.
The invention provides a kind of ER50-G without copper plating soldering wire, its chemical composition is by mass percentage：C 0.03~
0.10%, Mn 0.90~2.00%, Si 0.3~1.15%, S≤0.010%, P 0.010~0.30%, Cr 0.10~
0.25%, Cu 0.30~0.50%, remaining is Fe；The ER50-G also contains Ni 0.60~1.20%, Mo without copper plating soldering wire
0.20~0.60%, Ti0.02~0.08%, B 0.001~0.008%；
Carbon (C) is unfavorable to the atmospheric corrosion resistance of steel, while welding performance, cold short performance and punching performance of C influence steel etc.,
Therefore, by C content control below 0.10%；
Nickel (Ni) is a kind of more stable element, and adding Ni can be such that the corrosion potential of steel changes to positive direction, increase
The stability of steel.With higher corrosion resistance, there are antirust and temperature capacity, generation protective rust generation can be promoted,
Reduce the corrosion rate of steel.The intensity of steel can be improved, and good plasticity and toughness can be kept, the anti-fatigue performance of steel is improved,
Steel is reduced to the sensitiveness of breach, the black brittleness transition temperature of steel is reduced, thus in this welding wire by nickel content by≤0.15%
Bring up to 0.60~1.20%；
Chromium (Cr) is the basic element of corrosion resistance, can improve the inoxidizability and corrosion resistance of steel, can be in steel surface shape
Into fine and close oxide-film, the passivation ability of steel is improved, when Cr and Cu is added in steel simultaneously, effect is particularly evident.Cr members have
Beneficial to acicular ferrite content in weld seam is improved, pro-eutectoid ferrite is reduced, and there are fining ferrite grains, can be significantly
Weld strength and low-temperature flexibility are improved, Cr contents are existed by≤0.15% control in the present invention is without copper facing ER50-G welding wires
0.10~0.25%, the inoxidizability of welding wire can be improved.But excessive chromium content will cause carbide segregation, reduction will be caused
Impact flexibility；
Copper (Cu) is to improve one of alloying element of weld corrosion resistance, can improve the weather-resistant of weld seam.Cu is in steel
Surface enrichment, the cathode contacts between Cu and steel that surface second is separated out can promote steel anodic passivity, and formed protectiveness compared with
Good rusty scale.In addition, Cu forms the barrier layer using Cu, P as main component between matrix and rusty scale, it is firmly combined with matrix,
Thus with preferable protective effect.In order to give full play to its corrosion resistance, Cu contents should be greater than 0.1%.But Cu too high levels
The sensitiveness for producing fire check can be improved, therefore, Cu contents should be less than 1%, Cu contents control of the invention 0.30~
0.50%；
The present invention is used as micro alloying element, not using vanadium, zirconium and aluminium, molybdenum (Mo) using molybdenum, titanium, boron：It is rotten in air
The corrosion rate of (especially industrial atmosphere) steel can reduce by more than 1/2nd under erosion environment.
In such scheme, the ER50-G is without copper plating soldering wire, wherein P 0.010~0.030%.P is to improve the resistance to air of steel
One of maximally effective alloying element of corrosive nature.When P combines with Cu in addition steel, more preferable complex effect is shown, big
Under the conditions of gas corrosion, the P in steel is anode depolarizing agent, and it can accelerate the uniform dissolution of steel and divalence Fe oxidation speed in steel
Rate, helps, in steel surface formation even compact diaphragm, the protective barrier of base steel to be entered as corrosive medium, makes to exempt from inside steel
By atmospheric corrosion.
In such scheme, the ER50-G is without copper plating soldering wire, wherein S≤0.008%.
In such scheme, the ER50-G is without copper plating soldering wire, wherein O≤100ppm, N≤80ppm.
In such scheme, the ER50-G is without copper plating soldering wire, wherein C 0.03~0.06%, Mn 1.00~1.6%, Ni
0.06~0.80%.
In such scheme, the ER50-G is without copper plating soldering wire, wherein Cr 0.10~0.20%.
Welding wire provided by the present invention can place six months surfaces in warehouse in the case of not copper-plated and not produce corrosion,
And.Its welding performance is higher than the copper plating soldering wire of existing ad eundem.The welding wire of the present invention uses CO2 gas shielded arc weldings, welding
Joint has excellent atmospheric corrosion resistance and excellent comprehensive mechanical performance, and weld(ing) deposit tensile strength reaches
600MPa, at -20 DEG C, ballistic work reaches 200J, and -40 DEG C of ballistic works reach 97J.
The present invention has clear advantage and beneficial effect compared with prior art.By above-mentioned technical proposal, the present invention
ER50-G can reach suitable technological progress and practicality without copper plating soldering wire, and with the extensive value in industry,
It at least has following advantages：
1st, ER50-G of the invention is without copper plating soldering wire, and Cu contents are controlled in 0.30~0.50%, in welding process, part
The scaling loss of copper and dilution, it is to avoid the generation of HOT CRACK FOR WELDING P；
2nd, ER50-G of the invention comes off in conductive nozzle without copper plating soldering wire in the absence of copper scale, caused by clogging,
And the welding unstability thereby resulted in, the problems such as easily producing splashing；
4th, ER50-G of the invention does not produce a large amount of copper cigarettes in welding process, improves working environment without copper plating soldering wire；
5th, ER50-G of the invention prevents severe contamination of the Copper-electroplating waste Liquor to environment without copper plating soldering wire；
6th, ER50-G of the invention is without copper plating soldering wire, under conditions of any surface coating processing is not done, and places six months
Surface does not produce corrosion, if using volatile rust prevention paper wrapper, and the antirust time limit, more than 1 year, meets welding wire weather-resistant standard
(GB/T11377-2005《The general rule of corrosion test under metal and other inorganic cover layer conditions of storage》) requirement.
In summary, ER50-G of the invention has many advantages, such as above-mentioned and practical value, technically without copper plating soldering wire
Have a significant progress, and generate handy and practical effect, and it is more existing there is the protrusion effect promoted without copper plating soldering wire, from
And it is more suitable for practicality, and the extensive value with industry, really it is a new and innovative, progressive, practical new design.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow the above and other objects, features and advantages of the present invention can
Become apparent, described in detail below especially exemplified by preferred embodiment as follows.
Embodiment
Further to illustrate that the embodiment of the present invention is to reach technological means and effect that predetermined goal of the invention is taken, lead to
Preferred embodiments below is crossed, the ER50-G proposed to the embodiment of the present invention is described in detail without its feature of copper plating soldering wire and its effect
As after.
A kind of ER50-G of the embodiment of the present invention is without copper plating soldering wire, and its chemical composition is by mass percentage：C 0.03~
0.10%, Mn 0.90~2.00%, Si 0.3~1.15%, S≤0.010%, P 0.010~0.30%, Cr 0.10~
0.25%, Cu 0.30~0.50%, remaining is Fe；Characterized in that, the ER50-G also contains Ni 0.60 without copper plating soldering wire
~1.20%, Mo 0.20~0.60%, Ti0.02~0.08%, B 0.001~0.008%；
Carbon (C) is unfavorable to the atmospheric corrosion resistance of steel, while welding performance, cold short performance and punching performance of C influence steel etc.,
Therefore, by C content control below 0.10%；
Nickel (Ni) is a kind of more stable element, and adding Ni can be such that the corrosion potential of steel changes to positive direction, increase
The stability of steel.With higher corrosion resistance, there are antirust and temperature capacity, generation protective rust generation can be promoted,
Reduce the corrosion rate of steel.The intensity of steel can be improved, and good plasticity and toughness can be kept, the anti-fatigue performance of steel is improved,
Steel is reduced to the sensitiveness of breach, the black brittleness transition temperature of steel is reduced, thus in this welding wire by nickel content by≤0.15%
Bring up to 0.60~1.20%；
Chromium (Cr) is the basic element of corrosion resistance, can improve the inoxidizability and corrosion resistance of steel, can be in steel surface shape
Into fine and close oxide-film, the passivation ability of steel is improved, when Cr and Cu is added in steel simultaneously, effect is particularly evident.Cr members have
Beneficial to acicular ferrite content in weld seam is improved, pro-eutectoid ferrite is reduced, and there are fining ferrite grains, can be significantly
Weld strength and low-temperature flexibility are improved, by Cr contents by≤0.15% control in the embodiment of the present invention is without copper facing ER50-G welding wires
System can improve the inoxidizability of welding wire 0.10~0.25%.But excessive chromium content will cause carbide segregation, will cause
Reduce impact flexibility；
Copper (Cu) is to improve one of alloying element of weld corrosion resistance, can improve the weather-resistant of weld seam.Cu is in steel
Surface enrichment, the cathode contacts between Cu and steel that surface second is separated out can promote steel anodic passivity, and formed protectiveness compared with
Good rusty scale；In addition, Cu forms the barrier layer using Cu, P as main component between matrix and rusty scale, it is firmly combined with matrix,
Thus with preferable protective effect.In order to give full play to its corrosion resistance, Cu contents should be greater than 0.1%.But Cu too high levels
The sensitiveness for producing fire check can be improved, therefore, Cu contents should be less than 1%, and the Cu contents of the embodiment of the present invention are controlled 0.30
~0.50%；
The embodiment of the present invention uses molybdenum, titanium, boron as micro alloying element, not using vanadium, zirconium and aluminium.
Further, the ER50-G is without copper plating soldering wire, wherein P 0.010~0.030%.P is to improve the resistance to air corruption of steel
One of maximally effective alloying element of corrosion energy.When P combines with Cu in addition steel, more preferable complex effect is shown, in air
Under etching condition, the P in steel is anode depolarizing agent, and it can accelerate the uniform dissolution of steel and divalence Fe oxidation speed in steel
Rate, helps, in steel surface formation even compact diaphragm, the protective barrier of base steel to be entered as corrosive medium, makes to exempt from inside steel
By atmospheric corrosion.
Further, the ER50-G is without copper plating soldering wire, wherein S≤0.008%.
Further, the ER50-G is without copper plating soldering wire, wherein O≤100ppm, N≤80ppm.
Further, the ER50-G is without copper plating soldering wire, wherein C 0.03~0.06%, Mn 1.00~1.6%, Ni
0.06~0.80%.
Further, the ER50-G is without copper plating soldering wire, wherein Cr 0.10~0.20%.
The ER50-G specific chemical composition percentages of the embodiment of the present invention, as shown in table 3, unit (%)：
Table 3
Wherein, monodrome is maximum in table 3.
Without copper plating soldering wire, tarnish test results are shown in Table 4 to the ER50-G of the embodiment of the present invention in atmospheric conditions.Test welding wire
Length is 200mm, and totally 60, one is taken weekly, with 10 times of lens examinations.Experiment condition is indoor placement and outdoor placement,
Since month March 1,1 year by a definite date；
Tarnish test results are as shown in table 4 under atmospheric conditions：
Table 4
The ER50-G of the embodiment of the present invention is without copper plating soldering wire welding performance test：Welding wire after depositing 6 months enters promoting the circulation of qi guarantor
Welding is tested, and is protected using CO2% gases, and gage of wire is 3.6mm cable formula welding wires, and material of test piece is Hua Ling Xiang Tan, Hunan
The D36 ship plates of Iron And Steel Co., Ltd's production, thickness is 22mm, 60 degree of V-butt butt welding, point 5 layers of welding, welding procedure
Parameter is as shown in table 5：
Table 5
Without copper plating soldering wire measuring mechanical property result as shown in table 6, numerical value is 5 to the ER50-G of the embodiment of the present invention in table
The average value of individual sample.
Table 6
ER50-G of the embodiment of the present invention is without copper plating soldering wire, the characteristic with weather-resistant, and welding process is stable.Its weld seam
Metal Mechanic Property is more than the mechanical performance standard required value of ER50-G welding wires.Fully meet 500MPa grades of large-scale component
High intensity technical requirements, with good impact flexibility.
It can be proved by the above, the ER50-G that the embodiment of the present invention is provided is without copper plating soldering wire without copper facing
In the case of have preferable atmospheric corrosion resistance, good welding performance., can be with because the welding wire need not carry out copper facing
Production cost is greatlyd save, is that enterprise brings unexpected, considerable economic and social benefit.
Described above, only highly preferred embodiment of the present invention is not intended to limit the scope of the present invention, it is all
Any modifications, equivalent substitutions and improvements made within the spirit and principles in the present invention etc., should be included in the protection of the present invention
Within the scope of.
Claims (6)
1. a kind of ER50-G is without copper plating soldering wire, its chemical composition is by mass percentage：C 0.03~0.10%, Mn 0.90~
2.00%, Si 0.3~1.15%, S≤0.010%, P 0.010~0.30%, Cr 0.10~0.25%, Cu 0.30~
0.50%, remaining is Fe；Characterized in that, the ER50-G also contains Ni 0.60~1.20%, Mo 0.20 without copper plating soldering wire
~0.60%, Ti 0.02~0.08%, B 0.001~0.008%.
2. ER50-G according to claim 1 is without copper plating soldering wire, it is characterised in that P0.010~0.030%.
3. ER50-G according to claim 1 is without copper plating soldering wire, it is characterised in that S≤0.008%.
4. ER50-G according to claim 1 is without copper plating soldering wire, it is characterised in that the ER50-G is without O in copper plating soldering wire
≤ 100ppm, N≤80ppm.
5. ER50-G according to claim 1 is without copper plating soldering wire, it is characterised in that the C 0.03~0.06%, described
Mn 1.00~1.6%, the Ni 0.06~0.80%.
6. ER50-G according to claim 1 is without copper plating soldering wire, it is characterised in that Cr0.10~0.20%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604863A (en) * | 2019-01-14 | 2019-04-12 | 上海连山金属材料有限公司 | A kind of high tough gas protecting welding wire |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109604863A (en) * | 2019-01-14 | 2019-04-12 | 上海连山金属材料有限公司 | A kind of high tough gas protecting welding wire |
| CN109604863B (en) * | 2019-01-14 | 2021-07-13 | 上海连山金属材料有限公司 | High-toughness gas shielded welding wire |
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| Publication number | Publication date |
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| CN106984916B (en) | 2020-11-06 |
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