CN105215580B - A kind of E309L stainless steels that can be used for high current welding lengthen welding rod - Google Patents
A kind of E309L stainless steels that can be used for high current welding lengthen welding rod Download PDFInfo
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- CN105215580B CN105215580B CN201510782465.1A CN201510782465A CN105215580B CN 105215580 B CN105215580 B CN 105215580B CN 201510782465 A CN201510782465 A CN 201510782465A CN 105215580 B CN105215580 B CN 105215580B
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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
- B23K35/36—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
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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
- B23K35/02—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
- B23K35/0272—Rods, electrodes, wires with more than one layer of coating or sheathing material
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Abstract
A kind of E309L stainless steels that can be used for high current welding lengthen welding rod,Coating contains marble,Fluorite,Rutile,Dehydration potassium feldspar,Dehydration mica,Bismuth oxide,Chrome green,Magnetic iron ore,Soda ash,Chromic carbide iron,Electrolytic manganese metal,Zircon sand,Potassium fluoroaluminate,Rare earth fluoride,Crome metal and metallic nickel,Blent and stirred by the proportioning of coating,15~20% potassium-sodium water glass is added according to coating gross weight and is stirred,Then coating and ER308L welding wires are placed on by hydraulic type electrode extrusion press is produced and prepare lengthening welding rod,There is no coating to ftracture and redness phenomenon when the high current and core wire length of 170~180A are 450mm,Although core wire uses ER308L,But deposited metal composition is met the requirement of E309L chemical compositions by way of covering transition alloy,Therefore there is good welding usability,Arc stability during welding,It is easy to operate,Appearance of weld is good,De- slag is easy.
Description
Technical field
Add the invention belongs to technical field of welding materials, especially a kind of E309L stainless steels that can be used for high current welding
Long Welding rod.
Background technology
Pressure vessel is widely used in the fields such as petrochemical industry, nuclear power, thermoelectricity, chemical industry, is typically necessary and bears HTHP.Pressure
The welding of force container inwall typically uses the pole built-up welding of large area austenic stainless steel belt, but is not advised in joint, flange and shape
Place then is welded during faults repair repair welding using general welding rod.
The built-up welding of austenic stainless steel belt pole generally uses the stainless steel electrodes such as 309L, 308L, 316L or 347L type, wherein
309L is buttering welding rod, and the length of the welding rod is general in 350~400mm.But in actual welding operating mode, welder in order to
Task is completed as early as possible, is many times welded using the high current beyond code requirement, be especially welded onto holding during the afterbody of welding rod
Easily occur that its coating is rubescent, welding rod afterbody problems of crack, it is impossible to weld and cause welding rod to waste again.
E309L stainless steel electrodes about that can implement high current welding yet there are no relevant report.
The content of the invention
To solve the above problems, the invention provides a kind of E309L stainless steel electrodes of energy high current welding, the welding rod
Length can reach 450mm, can apply the high current welding of 170~180A, take off slag easily, and arc stability, coating is not rubescent, welding rod
Afterbody does not ftracture, and appearance of weld is good, can be applied to the built-up welding welding of pressure petrochemical industry container inner wall transition zone.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of E309L stainless steels that can be used for high current welding lengthen welding rod, and the lengthening welding rod is made up of core wire and coating,
Wherein core wire uses ER308L welding wires, and calcite and fluorite, rutile, dehydration potassium feldspar, dehydration mica, oxidation are contained in coating
Bismuth, chrome green, magnetic iron ore, soda ash, chromic carbide iron, electrolytic manganese metal, zircon sand, potassium fluoroaluminate, rare earth fluoride, crome metal and metal
Nickel, the binding agent that coating is used is potassium-sodium water glass, and the lengthening welding rod is prepared and produced by hydraulic type electrode extrusion press, this
Invent and be characterized in：
The length of ER308L welding wires is controlled in 450mm；
Coating proportioning by weight is：Marble：10~12；Fluorite：8~10；Rutile：30~35；Dehydration potassium
Feldspar：15~20；Dehydration mica：1~2；Bismuth oxide：0.1~0.4；Chrome green：3~5；Magnetic iron ore：2~3；Soda ash：0.3~
0.5；Chromic carbide iron：3~4；Electrolytic manganese metal：3~4；Zircon sand：1~2；Potassium fluoroaluminate：0.3~0.5；Rare earth fluoride：0.3
~0.5；Crome metal：10~12；Metallic nickel：5~8；
Blent and stirred by the proportioning of coating, the gross weight according to coating is added 15~20% potassium-sodium water glass
And stir, the coating for stirring and ER308L welding wires are placed on by hydraulic type electrode extrusion press is produced and are prepared
Welding rod is lengthened, coating chemical composition wt% after testing must meet in the lengthening welding rod：C≤0.04, Si≤1.0, Cr：22.0~
25.0, Mn：0.50~2.50, Cu≤0.75, Ni：12.0~14.0, Mo≤0.50, S≤0.030, P≤0.040, Fe surpluses；
The lengthening welding rod allows the current control for applying in 170~180A after testing；
The chemical composition wt% of above-mentioned ER308L welding wires is required：C≤0.03, Mn：1.0~2.5, Si:0.3~0.65, S
≤ 0.03, P≤0.03, Cr:19.5~22.0, Ni:9.0~11.0；
The chemical composition wt% of above-mentioned potassium-sodium water glass is required：Na2O+K2O >=12, SiO2>=25, S≤0.005, P≤
0.005, the requirement of the modulus of potassium-sodium water glass is 2.4 and its Baume degrees requirement is 46~48 °；
Above-mentioned marmorean chemical composition wt% is required：CaCO3>=98.0, S≤0.010, P≤0.010, it is desirable to Dali
The Task-size Controlling of stone is in 60 mesh；
The chemical composition wt% of above-mentioned fluorite is required：CaF2>=95.0, SiO2≤ 1.00, S≤0.010, P≤0.010,
It is required that the Task-size Controlling of fluorite is in 60 mesh；
The chemical composition wt% of above-mentioned rutile is required：TiO2>=95.0, S≤0.010, P≤0.010, it is desirable to golden red
The Task-size Controlling of stone is in 60 mesh；
The chemical composition wt% of above-mentioned dehydration potassium feldspar is required：Na2O+K2O >=12, SiO2:63~73, Al2O3:15~
24, S≤0.04, P≤0.04, it is desirable to the Task-size Controlling of potassium feldspar is dehydrated in 120 mesh；
The chemical composition wt% of above-mentioned dehydration mica is required：Na2O+K2O >=7, SiO2:45~55, Al2O3:25~35, S
≤ 0.03, P≤0.04, it is desirable to the Task-size Controlling of mica is dehydrated in 40 mesh；
The chemical composition wt% of above-mentioned bismuth oxide is required：Bi2O3＞ 99.9, it is desirable to which the Task-size Controlling of bismuth oxide is 120
Mesh；
The chemical composition wt% of above-mentioned chrome green is required：Cr2O3>=95.0, S≤0.04, P≤0.04, it is desirable to the grain of chrome green
Degree control is in 200 mesh；
The chemical composition wt% of above-mentioned magnetic iron ore is required：Fe3O4>=97.0, S≤0.050, P≤0.050, it is desirable to magnet
The Task-size Controlling of ore deposit is in 60 mesh；
The chemical composition wt% of above-mentioned soda ash is required：Na2CO3>=98.0, it is desirable to which the Task-size Controlling of soda ash is in 40 mesh；
The chemical composition wt% of above-mentioned chromic carbide iron is required：Cr:60~70, S≤0.03, P≤0.03, C≤0.03 will
The Task-size Controlling of chromic carbide iron is sought in 60 mesh；
The chemical composition wt% of above-mentioned electrolytic manganese metal is required：Mn >=99.8, S≤0.04, P≤0.04, it is desirable to be electrolysed
The Task-size Controlling of manganese metal is in 60 mesh；
The chemical composition wt% of above-mentioned zircon sand is required：ZrO2>=60, SiO2>=32, S≤0.05, P≤0.22, it is desirable to
The Task-size Controlling of zircon sand is in 80 mesh；
Above-mentioned potassium fluoroaluminate K3AlF6Chemical composition wt% requirement be：F:48~53, AL:15~20, K:25~33, S≤
0.05, P≤0.005, it is desirable to potassium fluoroaluminate K3AlF6Task-size Controlling in 60 mesh；
The chemical composition wt% of above-mentioned rare earth fluoride is required：CeO2/ REO >=45, F >=26, it is desirable to the grain of rare earth fluoride
Degree control is in 100 mesh；
The chemical composition wt% of above-mentioned crome metal is required：Cr >=99.0, C≤0.020, S≤0.010, P≤0.010 will
The Task-size Controlling of crome metal is sought in 60 mesh；
The chemical composition wt% of above-mentioned metallic nickel is required：Ni=99.4, S≤0.010, P≤0.010, it is desirable to metallic nickel
Task-size Controlling in 60 mesh.
Due to using technical scheme as described above, the present invention to produce following good effect：
1) stainless steel of the invention lengthens welding rod has good welding usability, and arc stability during welding is easy to operate,
Appearance of weld is good, takes off slag easy.
2) its anti-rubescent and anti-coating cracking performance of stainless steel lengthening welding rod of the invention is good, in the big electricity of 170~180A
Stream and core wire length do not have coating to ftracture and redness phenomenon when being 450mm.
3) after being heat-treated through 690 DEG C × 22h, its side bend test and Huey test testing result are qualified.
4) stainless steel lengthening welding rod of the invention can be used for all-position welding.
Specific embodiment
Stainless steel of the invention lengthens welding rod and belongs to acidic electrode, wherein marble, and fluorite, zircon sand is dehydrated potassium feldspar,
Rutile etc. is slag former, and chrome green and magnetic iron ore can strengthen the oxidisability of welding rod and reduce hydrogen dividing potential drop and improve weld blowhole and incline
To potassium fluoroaluminate K3AlF6Dehydrogenation and hydrogen blistering can be eliminated with rare earth fluoride, hafnium metal powfer can be to transition chromium in deposited metal
Element, metal nickel powder can be to transition nickel element in deposited metal, and electrolytic manganese metal can be with addition to deoxidation, desulfidation
To transition manganese element in deposited metal, chromic carbide iron, electrolytic manganese metal can ensure the pure of weld(ing) deposit as deoxidier
Cleanliness.
Rutile can simultaneously improve the removability of slag and Forming Quality of weld metal as main slag former, it is possible to improve
Arc stability.
Zircon sand can adjust the physical and chemical performance of slag as main slag former, improve the removability of slag of weld metal,
Improve fusing fusing point.Especially there is chemical change in the zirconium dioxide in zircon sand in welding process, cause slag thermal expansion
The change of coefficient, is very beneficial for the de- slag of weld metal.
Bismuth oxide can also improve the removability of slag of weld metal.
Rutile, dehydration potassium feldspar, dehydration mica, marble, soda ash are respectively provided with stabilising arc effect, can improve welding procedure
Property.Wherein rutile, dehydration potassium feldspar, dehydration mica have promotion molten drop flux-wall guided transfer, reduce the work of coating temperature rise tearing tendency
With.
According to the technical scheme, three kinds of weights of coating see the table below.
Coating is blent by upper table proportioning, then the gross weight according to coating adds 15~20% potassium-sodium water glass
And stir, the coating for stirring and ER308L welding wires are placed on by hydraulic type electrode extrusion press is produced and are prepared
Lengthen welding rod.
Three kinds of stainless steels that upper table is prepared lengthen welding rod and carry out deposited metal composition analysis and mechanical property
Experiment, test plate (panel) groove, size, sampling method and position are according to standard GB/T/T 983-2012《Stainless steel electrode》Carry out,
Welding conditions are by taking Φ 4.0mm welding rods as an example:DC reverse connection, 170~180A of welding current, temperature between 150 DEG C of preheating and road, weldering
It is heat-treated according to the system of 690 DEG C × 22h in incubator again after the completion of connecing.
The deposited metal main chemical compositions wt% reference values of three embodiments see the table below.
Fe surpluses in upper table.
Needs draw attention to be：Although the present invention uses ER308L core wires, by the side of covering transition alloy
Formula makes deposited metal composition meet the chemical composition requirement of E309L, therefore the present invention is just called the lengthening of E309L stainless steels
Welding rod.
The deposited metal mechanical property reference value of three embodiments see the table below.
According to national standard《GBT 2653-2008 welding point bend test methods》With《GBT 4334-2008 metals and
The corrosion stainless steel intercrystalline corrosion test method of alloy》Deposited metal lateral bending and Huey test are carried out, its result of the test
It is qualified, meet and require.
Claims (1)
1. a kind of E309L stainless steels that can be used for high current welding lengthen welding rod, and the lengthening welding rod is made up of core wire and coating, its
Middle core wire use ER308L welding wires, in coating containing calcite and fluorite, rutile, dehydration potassium feldspar, dehydration mica, bismuth oxide,
Chrome green, magnetic iron ore, soda ash, chromic carbide iron, electrolytic manganese metal, zircon sand, potassium fluoroaluminate, rare earth fluoride, crome metal and metallic nickel,
The binding agent that coating is used is potassium-sodium water glass, and the lengthening welding rod is prepared and produced by hydraulic type electrode extrusion press, and it is special
Levying is：
The length of ER308L welding wires is controlled in 450mm；
Coating proportioning by weight is：Marble：10~12；Fluorite：8~10；Rutile：30~35；Dehydration potassium feldspar：
15~20；Dehydration mica：1~2；Bismuth oxide：0.1~0.4；Chrome green：3~5；Magnetic iron ore：2~3；Soda ash：0.3~0.5；Micro- carbon
Ferrochrome：3~4；Electrolytic manganese metal：3~4；Zircon sand：1~2；Potassium fluoroaluminate：0.3~0.5；Rare earth fluoride：0.3~0.5；Gold
Category chromium：10~12；Metallic nickel：5~8；
Blent and stirred by the proportioning of coating, the gross weight according to coating is added 15~20% potassium-sodium water glass and stirred
Mix uniform, the coating for stirring and ER308L welding wires are placed on by hydraulic type electrode extrusion press is produced and prepare lengthening
Welding rod, coating chemical composition wt% after testing must meet in the lengthening welding rod：C≤0.04, Si≤1.0, Cr：22.0~25.0,
Mn：0.50~2.50, Cu≤0.75, Ni：12.0~14.0, Mo≤0.50, S≤0.030, P≤0.040, Fe surpluses；Should add
Long Welding rod allows the current control for applying in 170~180A after testing；
The chemical composition wt% of above-mentioned ER308L welding wires is required：C≤0.03, Mn：1.0~2.5, Si:0.3~0.65, S≤
0.03, P≤0.03, Cr:19.5~22.0, Ni:9.0~11.0；
The chemical composition wt% of above-mentioned potassium-sodium water glass is required：Na2O+K2O >=12, SiO2>=25, S≤0. 005, P≤
0.005, the requirement of the modulus of potassium-sodium water glass is 2.4 and its Baume degrees requirement is 46~48 ° of B é；
Above-mentioned marmorean chemical composition wt% is required：CaCO3>=98.0, S≤0.010, P≤0.010, it is desirable to marmorean grain
Degree control is in 60 mesh；
The chemical composition wt% of above-mentioned fluorite is required：CaF2>=95.0, SiO2≤ 1.00, S≤0.010, P≤0.010, it is desirable to firefly
The Task-size Controlling of stone is in 60 mesh；
The chemical composition wt% of above-mentioned rutile is required：TiO2>=95.0, S≤0.010, P≤0.010, it is desirable to the grain of rutile
Degree control is in 60 mesh；
The chemical composition wt% of above-mentioned dehydration potassium feldspar is required：Na2O+K2O >=12, SiO2:63~73, Al2O3:15~24, S≤
0.04, P≤0.04, it is desirable to be dehydrated the Task-size Controlling of potassium feldspar in 120 mesh；
The chemical composition wt% of above-mentioned dehydration mica is required：Na2O+K2O >=7, SiO2:45~55, Al2O3:25~35, S≤
0.03, P≤0.04, it is desirable to be dehydrated the Task-size Controlling of mica in 40 mesh；
The chemical composition wt% of above-mentioned bismuth oxide is required：Bi2O3＞ 99.9, it is desirable to which the Task-size Controlling of bismuth oxide is in 120 mesh；
The chemical composition wt% of above-mentioned chrome green is required：Cr2O3>=95.0, S≤0.04, P≤0.04, it is desirable to the granularity control of chrome green
System is in 200 mesh；
The chemical composition wt% of above-mentioned magnetic iron ore is required：Fe3O4>=97.0, S≤0.050, P≤0.050, it is desirable to the grain of magnetic iron ore
Degree control is in 60 mesh；
The chemical composition wt% of above-mentioned soda ash is required：Na2CO3>=98.0, it is desirable to which the Task-size Controlling of soda ash is in 40 mesh；
The chemical composition wt% of above-mentioned chromic carbide iron is required：Cr:60~70, S≤0.03, P≤0.03, C≤0.03, it is desirable to micro-
The Task-size Controlling of carbon ferrochrome is in 60 mesh；
The chemical composition wt% of above-mentioned electrolytic manganese metal is required：Mn >=99.8, S≤0.04, P≤0.04, it is desirable to electrolytic metal
The Task-size Controlling of manganese is in 60 mesh；
The chemical composition wt% of above-mentioned zircon sand is required：ZrO2>=60, SiO2>=32, S≤0.05, P≤0.22, it is desirable to zircon sand
Task-size Controlling in 80 mesh；
Above-mentioned potassium fluoroaluminate K3AlF6Chemical composition wt% requirement be：F:48~53, AL:15~20, K:25~33, S≤
0.05, P≤0.005, it is desirable to potassium fluoroaluminate K3AlF6Task-size Controlling in 60 mesh；
The chemical composition wt% of above-mentioned rare earth fluoride is required：CeO2/ REO >=45, F >=26, it is desirable to the Task-size Controlling of rare earth fluoride
In 100 mesh；
The chemical composition wt% of above-mentioned crome metal is required：Cr >=99.0, C≤0.020, S≤0.010, P≤0.010, it is desirable to gold
Belong to the Task-size Controlling of chromium in 60 mesh；
The chemical composition wt% of above-mentioned metallic nickel is required：Ni=99.4, S≤0.010, P≤0.010, it is desirable to the granularity of metallic nickel
Control is in 60 mesh.
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| CN104759782A (en) * | 2015-04-24 | 2015-07-08 | 洛阳双瑞特种合金材料有限公司 | Alloy system electrode with low-tempering brittleness |
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