CN106825997A - A kind of low spatter, ultralow-hydrogen low, -100 DEG C of excellent welding rods of impact flexibility - Google Patents
A kind of low spatter, ultralow-hydrogen low, -100 DEG C of excellent welding rods of impact flexibility Download PDFInfo
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- CN106825997A CN106825997A CN201510895423.9A CN201510895423A CN106825997A CN 106825997 A CN106825997 A CN 106825997A CN 201510895423 A CN201510895423 A CN 201510895423A CN 106825997 A CN106825997 A CN 106825997A
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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
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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
-
- 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
- B23K35/3066—Fe as the principal constituent with Ni 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
- B23K35/22—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
- B23K35/3602—Carbonates, basic oxides or hydroxides
-
- 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
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
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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
-
- 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
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- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a kind of low spatter, ultralow-hydrogen low, -100 DEG C of excellent welding rods of impact flexibility, including coating and core wire, it is characterised in that coating by weight percentage constitutes and is：Marble 5-20%, fluorite 1-5%, ice crystal 5-20%, strontium carbonate 1-5%, zircon English 0.1-3%, ferro-boron 0.1-0.5% and appropriate binding agent etc.；Core wire by weight percentage is the low-phosphorous low-alloy steel of low-sulfur, 0-0.1%C, 0-0.004%S, 0-0.005%P.The welding rod low spatter, weld metal ultralow-hydrogen low, excellent in low temperature toughness, adapt to all-position welding.
Description
Technical field
The present invention relates to a kind of low-temperature steel welding rod, more particularly to a kind of ultralow hydrogen content it is low
Warm steel welding rod.
Background technology
World Economics and social development have driven the fast development of energy field.For storage ethylene,
Liquefied petroleum gas, the spherical tank of liquefied natural gas and association storage equipment have driven low-temperature steel and supporting
The development of welding material.
Because tank structure is complicated, the condition such as to build that constraint (restraint) degree is big, usually need to construct in the wild normal
Welding cold cracking appearance is often resulted in, welding quality is damaged, is carried out hidden danger to structure safety belt.And weld
Connect diffusible hydrogen content and directly determine cool attenuation, therefore industry continues ultralow-hydrogen low wlding.
It is (beautiful with -100 DEG C of 3.5Ni steel low-temperature pressure vessel steels for using to ensure structure safety
Mark SA203E) as a example by, its supporting welding rod need to have diffusible hydrogen less than 5ml/100g, -100 DEG C
The advantages of ballistic work is more than 47J, low spatter and welding fabrication attractive in appearance.
Prior art 201410353825 can meet diffusible hydrogen less than 4ml/100g there is provided one kind
Welding rod, coating adds magnesia, borax and rare earth fluoride on the basis of 35-45% marbles
To reduce weld metal diffusible hydrogen.The use 40-50% of prior art 201410171103 marbles,
2-5% barium carbonates, and rare earth ferrosilicon alloy and rare earth fluoride obtain diffusible hydrogen content and are less than
3.5ml/100g weld metals.But marble content more than 35%, can increase influence spatter,
It is unfavorable for welding quality control.
Prior art 201310322476 is provided and a kind of to meet -100 DEG C of ballistic work requirements
Welding rod, its medicine coating uses 30-50% marbles, 20-30% fluorites, 0.5-2% almags
To obtain low-temperature flexibility.A large amount of fluorite additions can destroy arc stability, influence appearance of weld
Energy.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide low spatter, ultralow
The excellent welding rod of hydrogen, -100 DEG C of impact flexibility, good its welding arc stablility, low spatter,
Excellent, weld metal the diffusible hydrogen content of removability of slag energy is less than 5ml/100g, weld metal
- 100 DEG C of ballistic works meet technical requirements.
For achieving the above object, present invention employs following technical scheme：
A kind of low-temperature steel ultralow hydrogen type electrode, including coating and core wire, it is characterised in that with weight hundred
Divide and be than the coating composition of meter：Marble 5-20%, fluorite 1-5%, ice crystal 5-20%, carbon
Sour strontium 1-5%, zircon English 0.1-3%, ferro-boron 0.1-0.5% and appropriate binding agent etc.；With weight
The core wire of percentages be the low-phosphorous low-alloy steel of low-sulfur, 0-0.1%C, 0-0.004%S,
0-0.005%P.
As further selection, it is characterised in that coating by weight percentage constitutes and is：Greatly
Reason stone 5-20%, fluorite 1-5%, ice crystal 5-20%, strontium carbonate 1-5%, zircon English 0.1-3%,
Ferro-boron 0.1-0.5%, nickel magnesium alloy 0.5-3%, alusil alloy 0.5-3% and appropriate binding agent etc.；
Core wire by weight percentage be the low-phosphorous low-alloy steel of low-sulfur, 0-0.1%C, 0-0.004%S,
0-0.005%P, 0-5%Ni, 0-2%Mo.
As further selection, it is characterised in that coating by weight percentage constitutes and is：Greatly
Reason stone 5-20%, fluorite 1-5%, ice crystal 5-20%, strontium carbonate 1-5%, zircon English 0.1-3%,
Ferro-boron 0.1-0.5%, nickel magnesium alloy 0.5-3%, alusil alloy 0.5-3%, 0.1-2% rare-earth oxidation
Thing, 0.2-0.8% alginates, and appropriate binding agent etc.；Feldspar and cloud also containing 0.1-1%
One or more in mother；Also the iron powder containing 0.1-5%, molybdenum powder or molybdenum-iron, nickel powder or
One or more in ferronickel；Core wire by weight percentage is the low-phosphorous low-alloy steel of low-sulfur,
0-0.1%C, 0-0.004%S, 0-0.005%P, 0-5%Ni, 0-2%Mo, 0-0.5%Nb.
Crust medicinal powder and core wire are configured by said ratio.After medicinal powder is uniformly mixed, weight is added
It is the binding agent of coating 18-25% to measure, and is then fed into plodder and is coated on core wire, can
The welding rod of diameter 2.0-5.0mm specifications is obtained.
Each group is into being described as follows in coating：
Marble：On the one hand using the CO decomposed under its condition of high temperature2Protection is provided to molten bath,
On the one hand slag making is carried out using its CaO for producing, clean welds metal improves removability of slag energy.
Too high levels, can increase splashing；Content is too low, unfavorable to weld shielding so that welding
Molten bath over oxidation, can reduce mechanical property.Therefore, its preferred content is 5-20%.
Fluorite：For desulfurization and dehydrogenation in welding pool, while diffusible hydrogen content is reduced,
Also beneficial to the low-temperature flexibility for improving weld metal.Content is too low, and dehydrogenation is limited；Content mistake
Height, while reducing arc stability, increase spatter, also reduces processing performance.Cause
This, its preferred content is 1-5%.
Ice crystal：A kind of fluoride, main component is Na2AlF6, it is mainly used in multiple with fluorite
Close dehydrogenation.Compared with fluorite, the Na ion pair electric arc influences ionized out under the condition of high temperature are relative
Smaller, it is also smaller to spatter and welding bead shaping influence.Additionally, the Al for isolating from
Son is combined with the oxygen in welding pool, is taken off beneficial to reducing oxygen content, welding pool slag making, improving
Slag performance.Its preferred content is 5-20%.
Strontium carbonate：On the one hand possess marmorean effect, be on the other hand that can improve welding rod table
The moisture absorption ability of face medicinal powder, so that the diffusible hydrogen content in reducing weld metal.Preferred content is
1-5%.
Zircon English：It is the composite oxides of zirconium oxide and silica, silica content is no more than
60%, both contents are more than 90%.Zirconium oxide is mainly used in welding pool deoxidation to change
Kind molten bath degree of purity, so as to improve weld metal low-temperature flexibility.Silica is mainly used in regulation weldering
The composition and structure of slag are connect, established field trash in welding pool on the one hand can be adsorbed,
On the other hand ensure that welding slag easily comes off and can form fine ripple on welding bead surface, from
And improve welding bead surface quality.Its preferred content is 0.1-3%.
Ferro-boron：The solidification columanar structure of welding pool is refined using boron element, so as to improve
The low-temperature flexibility of weld metal.Its preferred content is 0.1-0.5%.
Nickel magnesium alloy：Wherein content of magnesium is not higher than 40%, and both content sums are more than 95%.Magnesium
For carrying out depth deoxidation to welding pool.Nickel is mainly used to transition nickel element in weld metal,
So as to meet the low-temperature impact toughness required for weld metal.Preferred content is 0.5-3%.
Alusil alloy：Silicone content is no more than 70%.On the one hand welding pool is refined using aluminium
Solidification columanar structure, so as to improve the low-temperature flexibility of weld metal.During addition compound with ferro-boron,
Nitrogen is combined with boron element during molten bath can be prevented, so as to improve the effect of ferro-boron.On the other hand,
It is compound with zirconium fluorite to add, so that the property such as the composition of precise control welding slag, structure and fusing point
Welding technological properties can be improved.Its preferred content is 0.5-3%.
Rare earth oxide：The characteristics of being easy in welding pool Dispersed precipitate using it and inhale
The ability of attached hydrogen atom reduces the diffusible hydrogen content in weld metal.Its preferred content is
0.1-2%.
Alginate：It is mainly used in improving the anti-moisture absorption capacity of surface coating, can also improves in addition
Extrusion performance.Its preferred content is 0.2-0.8%.
Add 0.1-1% feldspar and mica in one or more, be mainly used for improve
Slag making performance, and improve arc stability.
Add one or more in the iron powder of 0.1-5%, molybdenum powder or molybdenum-iron, nickel powder or ferronickel.
On the one hand it is, to transition metal in weld metal, to improve mechanical property, on the other hand changes
The deposition efficiency of kind welding rod.
Through conversion, the silicone content sum in zircon English and alusil alloy is no more than 3%.Otherwise weld
The excessive element silicon of solid solution can promote ferrite side plate, bainite or martensite in seam metal
Generated Deng tissue, low-temperature impact toughness can be reduced.
Binding agent：Appropriate bonding agent is added for improving the mobility and viscosity of coating, so that sharp
In extrusion performance improvement
Core wire composition design is described as follows：
C, S, P：Used as impurity element, its content is not more than 0.1%, 0.004% respectively,
0.005%.
Ni：For improving low-temperature impact toughness to transition elements in weld metal.Consider
Coating material physical characters of arc, and in welding process alloying element transfer coefficient, its is excellent
It is 0-5% to select content.
Mo:For improving intensity and low-temperature flexibility to transition metal in weld metal.
Consider coating material physical characters of arc, and in welding process alloying element transfer coefficient,
Its preferred content is 0-2%.
Nb：On the one hand it is used to refine the solidified structure of welding pool, improves low-temperature impact toughness；
On the other hand the characteristics of being easy to segregation crystal boundary using it, prevents the formation of local thick column crystal,
Improve low-temperature flexibility.Preferred content is 0-0.5%.
Compared with prior art, the technology of the present invention beneficial effect at least that：
1st, there is provided the welding rod that a kind of low spatter, ultralow-hydrogen low, -100 DEG C of impact flexibility are excellent.
Overcome the spattering problem that prior art is largely brought using marble.The present invention passes through ice crystal
The compound addition of stone, fluorite and rare earth oxide, marmorean content is significantly reduced, true
While protecting ultralow-hydrogen low and low-temperature flexibility, spatter is reduced, improve welding technological properties.
2nd, strontium carbonate, the addition of zircon English improves epidermis medicinal powder anti-moisture absorption capacity, is conducive to weldering
Stitch the ultralow hydrogen content control of metal.
3rd, alusil alloy and ferro-boron compound use, have refined welding pool solidified structure, have improved
Low-temperature flexibility.
Specific embodiment
The present invention is described in detail with reference to embodiment.
Embodiment 1
Compositions of surfacing metal (percentage by weight) includes：Marble 12%, fluorite 4%, ice crystal
14%, strontium carbonate 3%, zircon English 2%, ferro-boron 0.2%, nickel magnesium alloy 1.8%, aluminium silicon is closed
Gold 1.6%, rare earth oxide 1.2%, alginate 0.5%, feldspar 0.2%, and it is appropriate viscous
Knot agent.
Through conversion, the silicone content sum in zircon English and alusil alloy is 2.6%.
Core wire material (percentage by weight) includes 0.02%C, 0.003%S, 0.004%P, 5%Ni,
1%Mo, 0.2%Nb, remaining is Fe and inevitable impurity.
The configuration of above-mentioned coating is finished, is wrapped in feeding extrusion press in core wire reward, through overdrying
Dry and baking is made welding rod of the present invention.
Embodiment 2
Compositions of surfacing metal (percentage by weight) includes：Marble 6%, fluorite 1%, ice crystal
20%, strontium carbonate 1%, zircon English 0.2%, ferro-boron 0.5%, nickel magnesium alloy 3%, aluminium silicon is closed
Gold 3%, rare earth oxide 0.2%, alginate 0.8%, mica 0.8%, ferronickel 3%, and
Appropriate binding agent.
Through conversion, the silicone content sum in zircon English and alusil alloy is 2.5%.
Core wire material (percentage by weight) includes 0.01%C, 0.002%S, 0.003%P, 0.5%Ni,
2%Mo, 0.1%Nb, remaining is Fe and inevitable impurity.
The configuration of above-mentioned coating is finished, is wrapped in feeding extrusion press in core wire reward, through overdrying
Dry and baking is made welding rod of the present invention.
Embodiment 3
Compositions of surfacing metal (percentage by weight) includes：Marble 18%, fluorite 5%, ice crystal
5%, strontium carbonate 5%, zircon English 3%, ferro-boron 0.1%, nickel magnesium alloy 0.5%, alusil alloy
0.6%, rare earth oxide 2%, alginate 0.2%, feldspar 0.4%, mica 0.4%, nickel
Iron 2%, molybdenum-iron 1%, and appropriate binding agent.
Through conversion, the silicone content sum in zircon English and alusil alloy is 2.7%.
Core wire material (percentage by weight) includes 0.01%C, 0.001%S, 0.004%P, 1.5%Ni,
1%Mo, 0.5%Nb, remaining is Fe and inevitable impurity.
The configuration of above-mentioned coating is finished, is wrapped in feeding extrusion press in core wire reward, through overdrying
Dry and baking is made welding rod of the present invention.
Comparative example 1
Core wire is same as Example 1.Marble ratio is 25%, remaining and embodiment in coating
1 is identical.
Comparative example 2
Core wire is same as Example 2.Fluorite ratio is 0.5%, remaining and embodiment 2 in coating
It is identical.
Comparative example 3
Core wire is same as Example 3.Cryolite ratio is 4%, remaining and embodiment in coating
3 is identical.
Above-mentioned three kinds of embodiments and three kinds of comparative examples are made into welding rod, soldering test is carried out.Mother metal
From the pressure vessel low-temperature steel of 3.5Ni, contrasted using identical welding procedure.Then
Spatter, the diffusible hydrogen content of weld metal and weld metal mechanical property are tested,
Result is shown in Table 1, table 2 and table 3 respectively.
From the above results, the present invention is designed by core wire and coating, obtained low spatter,
The excellent welding rod of ultralow diffusible hydrogen content, -100 DEG C of impact flexibility, it is adaptable to low-temperature (low temperature) vessel
All-position welding, welding technological properties is good, and the removability of slag good, the welding bead surface quality of energy is high.
Welding rod of the present invention is not restricted to the described embodiments, it is any meet right of the invention will
Improvement and change in the range of asking is all within protection domain of the presently claimed invention.
The welding procedure test result of table 1.
(O:It is qualified；×:It is unqualified)
The weld metal diffusible hydrogen of table 2.
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Diffusible hydrogen content (ml/100g) | 3.4 | 3.3 | 3.1 | 5.5 | 4.6 | 6.1 |
| Whether 4ml/100g is less than | It is | It is | It is | It is no | It is no | It is no |
The deposited metal mechanical property of table 3.
Claims (4)
1. a kind of low spatter, ultralow-hydrogen low, -100 DEG C of excellent welding rods of impact flexibility, including coating and core wire, it is characterised in that coating by weight percentage constitutes and is：Marble 5-20%, fluorite 1-5%, ice crystal 5-20%, strontium carbonate 1-5%, zircon English 0.1-3%, ferro-boron 0.1-0.5% and appropriate binding agent etc.；Core wire by weight percentage is the low-phosphorous low-alloy steel of low-sulfur, 0-0.1%C, 0-0.004%S, 0-0.005%P.
2. a kind of low spatter, ultralow-hydrogen low, -100 DEG C of excellent welding rods of impact flexibility, including coating and core wire, it is characterised in that coating by weight percentage constitutes and is：Marble 5-20%, fluorite 1-5%, ice crystal 5-20%, strontium carbonate 1-5%, zircon English 0.1-3%, ferro-boron 0.1-0.5%, nickel magnesium alloy 0.5-3%, alusil alloy 0.5-3% and appropriate binding agent etc.；Core wire by weight percentage is the low-phosphorous low-alloy steel of low-sulfur, 0-0.1%C, 0-0.004%S, 0-0.005%P, 0-5%Ni, 0-2%Mo.
3. a kind of low spatter, ultralow-hydrogen low, -100 DEG C of excellent welding rods of impact flexibility, including coating and core wire, it is characterised in that coating by weight percentage constitutes and is：Marble 5-20%, fluorite 1-5%, ice crystal 5-20%, strontium carbonate 1-5%, zircon English 0.1-3%, ferro-boron 0.1-0.5%, nickel magnesium alloy 0.5-3%, alusil alloy 0.5-3%, 0.1-2% rare earth oxides, 0.2-0.8% alginates, and appropriate binding agent etc., one or more also in feldspar and mica containing 0.1-1%, one or more also in the iron powder containing 0.1-5%, molybdenum powder or molybdenum-iron, nickel powder or ferronickel；Core wire by weight percentage is the low-phosphorous low-alloy steel of low-sulfur, 0-0.1%C, 0-0.004%S, 0-0.005%P, 0-5%Ni, 0-2%Mo, 0-0.5%Nb.
4. coating as claimed in claim 3, is further characterized in that, the English-Chinese silica content of zircon is no more than 60%, and the silicone content in alusil alloy is no more than 70%, and by conversion, silicone content is no more than 3% in coating.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110369908A (en) * | 2019-08-20 | 2019-10-25 | 哈尔滨威尔焊接有限责任公司 | The excellent SA-508Gr.4N steel all position welding hydrogen controlled electrode of low-temperature impact toughness |
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| CN102513741A (en) * | 2011-12-27 | 2012-06-27 | 安泰科技股份有限公司 | Two-phase stainless steel welding electrode and manufacturing method thereof |
| CN103817465A (en) * | 2012-11-16 | 2014-05-28 | 李彬 | Fluoride welding rod |
| JP2015085341A (en) * | 2013-10-29 | 2015-05-07 | 日鐵住金溶接工業株式会社 | Low-hydrogen type coated arc welding electrode |
| CN103862201A (en) * | 2014-03-04 | 2014-06-18 | 中国船舶重工集团公司第七二五研究所 | Welding electrode for Ni steel welding |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110369908A (en) * | 2019-08-20 | 2019-10-25 | 哈尔滨威尔焊接有限责任公司 | The excellent SA-508Gr.4N steel all position welding hydrogen controlled electrode of low-temperature impact toughness |
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