CN106425163A - 1100Mpa grade high-strength high-toughness low-alloy steel electric welding rod - Google Patents
1100Mpa grade high-strength high-toughness low-alloy steel electric welding rod Download PDFInfo
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- CN106425163A CN106425163A CN201611163874.4A CN201611163874A CN106425163A CN 106425163 A CN106425163 A CN 106425163A CN 201611163874 A CN201611163874 A CN 201611163874A CN 106425163 A CN106425163 A CN 106425163A
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- welding rod
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- alloy steel
- weight
- core wire
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Classifications
-
- 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
- B23K35/22—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention discloses a 1100Mpa grade high-strength high-toughness low-alloy steel electric welding rod. Welding can be implemented by using the welding rod; the weld joint strength is greater than 1100Mpa; the impact power of the welding rod at minus 40 DEG C can be greater than 27J; the diffusible hydrogen content of the welding rod is within 2-3ml/100g; and the welding rod is mainly applicable to welding of a low-alloy steel structure less than a grade of 100kg.
Description
Technical field
The invention belongs to field of welding material, it is used for 1100MPa grade high-strength, high-toughness low-alloy steel particularly to a kind of
Welding rod.
Background technology
With mechanical industry and manufacturing develop further, in order to improve the performance of steel construction product, a large amount of using high
Strength steel is so that the demand of matched welding material greatly increases.As a rule, carrying with welding material intensity
Height, the impact flexibility of deposited metal can reduce, and how to take into account both, the target always pursued in the industry.
" a kind of good high strength stick electrode of low-temperature flexibility " invention that Chinese patent CN200410037809.8 is introduced is specially
Profit, the tensile strength of its deposited metal probably in 850MPa, yield strength in 810MPa, although this welding rod has preferably
Strength character, but not ideal enough with the mother metal matching effect of 100 kilograms or higher intensity.
Content of the invention
It is an object of the invention to provide a kind of 1100MPa grade high-strength, high-toughness low-alloy steel welding rod, can effectively carry
It is adaptable to the welding of the low-alloy steel structure of 100 feather weight, it is that direct current is special to high Low Temperature Toughness of Deposited Metals, all position welding
Connect excellent performance, arc stability, unbiased arc phenomenon, splashing is little, it is easy to take off slag.
The technical solution adopted in the present invention is：A kind of 1100MPa grade high-strength, high-toughness low-alloy steel welding rod, by
Core wire and coating are constituted, and coating is coated on core wire outer wall, and described coating accounts for the 45%～55% of welding rod gross weight；
On the basis of core wire gross weight, by weight percentage, the component of described core wire is as follows：
C：0.05～0.10%；
Si：0.005～0.03%；
Mn：0.30～0.55%；
Cr：0.005～0.20%；
Ni：0.005～0.30%；
V：0.001～0.005%
P：≤ 0.020%；
S：≤ 0.014%；
Fe：Surplus；
On the basis of coating gross weight, by weight percentage, the component of described coating includes：
Calcium Carbonate：20～30%；
Magnesium carbonate：1～5%；
Brium carbonate：5～10%；
Calcium fluoride：10～18%；
Cryolite：3～10%；
Barium fluoride：1～5%；
Rutile：3～8%；
Titanium dioxide：1～5%；
Silicon dioxide：2～10%；
Electrolytic manganese：5～10%；
Ferrosilicon：2～5%；
Nikel powder：4～8%；
Chromium powder：1～3%；
Molybdenum powder：1～3%；
Vanadium iron：1～3%.
Described welding rod in as-welded lower use, the percentage by weight of its deposited metal composition is：C：≤ 0.07%, Si：
0.2～0.4%, Mn：1.3～1.8%, Ni：2.6～3.8%, Cr：0.75～1.1%, Mo：0.66～1.0%, V：0.1～
0.2%, P：≤ 0.010%, S：≤ 0.01%, remaining is Fe.
As follows to the restriction reason of deposited metal composition in the present invention：
Carbon is improved the effect of deposited metal intensity, simultaneously to reducing its toughness and crack resistance also with obvious effect, is
Raising toughness is drunk and is improved crack resistance, and carbon content should be tried one's best lower.But, can be to transition in deposited metal from coating in welding process
Carbon, so carbon content is limited in less than 0.07%.
Silicon is effective deoxidizer in welding process, as silicone content little Yu 0.2% in deposited metal, does not reach fully de-
The effect of oxygen, makes to be likely to occur the defects such as pore in weld seam, when silicone content is more than 0.4%, then can be to the low-temperature flexibility of weld seam
Harmful.
Manganese is good deoxidation and desulfurizing agent, can effectively improve the intensity of deposited metal, when manganese content is less than 1.3%,
Deposited metal intensity does not reach requirement, is unfavorable for preventing weld seam from producing fire check simultaneously yet.When manganese content is more than 1.8%, melt
Metallisation toughness can reduce.
Nickel can increase the ratio of acicular ferrite, improve deposited metal by reducing the ratio of pro-eutectoid ferrite
Toughness, reduces its brittle transition temperature, and when nickel content is less than 2.6%, the impact flexibility under low temperature does not reach requirement, when nickel contains
When amount is more than 3.8%, fire check sensitivity then can increase.
Chromium is carbide former, has obvious effect to the intensity improving deposited metal, but low-temperature flexibility is then had not
Good impact, when chromium content is less than 0.75%, deposited metal intensity does not reach requirement, when chromium content is more than 1.1%, deposition
Metal toughness substantially deteriorates.
Molybdenum element also has certain harmful effect to low-temperature flexibility while improving intensity, therefore, for reaching requirement
Intensity, should control molybdenum content to be not less than 0.66%, but when molybdenum content is higher than 1.0%, can be unfavorable to toughness.
Vanadium is good deoxidizer, can thinning microstructure crystal grain, improve intensity and toughness, when controlling vanadium 0.1～0.2%
When, intensity and toughness can get optimal coupling.
Using welding rod welding of the present invention, weld strength is more than 1100MPa, and -40 DEG C of ballistic works are more than 27J, diffusible hydrogen content
Between 2～3ml/100g, high intensity, high tenacity, it is particularly suited for the welding of the low-alloy steel structure of 100 feather weight, this
Bright effectively increase Low Temperature Toughness of Deposited Metals, all-position welding excellent performance, arc stability, unbiased arc phenomenon, splash little, de-
Slag is easy.
Specific embodiment
With reference to specific embodiment, technical scheme is further described, but the present invention is not limited to this
A little embodiments.
The present invention is combined by core wire and coating, and core wire adopts the HO8D carbon steel heart yearn of high-quality, its component such as following table (weight
Percentage ratio %)：
| C | Si | Mn | Cr | V |
| 0.05～0.10 | 0.005～0.03 | 0.30～0.55 | 0.005～0.20 | 0.001～0.005 |
| P | S | Ni | Fe | |
| ≤0.020 | ≤0.014 | 0.005～0.30 | Surplus |
Coating accounts for core wire and the 45%-55% of coating total weight percent.Compositions of surfacing metal is following (percentage by weight)：
| Calcium Carbonate | Magnesium carbonate | Brium carbonate | Calcium fluoride | Cryolite | Barium fluoride |
| 20～30 | 1～5 | 5～10 | 10～18 | 3～10 | 1～5 |
| Rutile | Titanium dioxide | Silicon dioxide | Electrolytic manganese | Ferrosilicon | Nikel powder |
| 3～8 | 1～5 | 2～10 | 5～10 | 2～5 | 4～8 |
| Chromium powder | Molybdenum powder | Vanadium iron | |||
| 1～3 | 1～3 | 1～3 |
Embodiment 1：
Using general manufacturing process in welding rod production industry, make core wire by the core wire formula of table 1-1, according to table 1-2
Coating recipe prepared and prepared electrode coating by wet mixing is dry mixed, electrode coating is coated on core wire, is allowed to into
Type：
Table 1-1 core wire formula (unit：Percentage by weight)
| C | Si | Mn | Cr | Ni | V | P | S | Fe |
| 0.066 | 0.007 | 0.44 | 0.007 | 0.014 | 0.002 | 0.007 | 0.006 | Surplus |
Table 1-2 coating recipe (unit：Percentage by weight)
Chemical property is tested using spark Atomic Emission Spectrometer AES, mechanical property adopt cupping machine, cryostat,
Shock machine is tested, and diffusible hydrogen is tested using gas chromatogram diffusion hydrogen analyzer.Its deposited metal composition
It is shown in Table 1-3, mechanical property is shown in Table 1-4, diffusible hydrogen content is shown in Table 1-5, the mensure of wherein diffusible hydrogen adopts gas chromatography, test
Average for five：
Chemical composition (the unit of table 1-3 deposited metal：The percentage ratio of welding rod weight)
| C | Mn | Si | P | S | Ni | Cr | Mo | V | Fe |
| 0.060 | 1.56 | 0.34 | 0.007 | 0.006 | 3.10 | 0.89 | 0.81 | 0.13 | Surplus |
The mechanical property of table 1-4 deposited metal
Table 1-5 deposited metal diffusible hydrogen content
| Test specimen | Drying condition before welding electrode | Diffusible hydrogen content (ml/100g) |
| Embodiment 1 | 400℃×1h | 2.53 |
Embodiment 2：
Using general manufacturing process in welding rod production industry, make core wire by the core wire formula of table 2-1, according to table 2-2
Coating recipe prepared and prepared electrode coating by wet mixing is dry mixed, electrode coating is coated on core wire, is allowed to into
Type：
Table 2-1 core wire formula (unit：Percentage by weight)
| C | Si | Mn | Cr | Ni | V | P | S | Fe |
| 0.066 | 0.007 | 0.42 | 0.007 | 0.013 | 0.002 | 0.006 | 0.006 | Surplus |
Table 2-2 coating recipe (unit：Percentage by weight)
Its deposited metal composition is shown in Table 2-3, and mechanical property is shown in Table 2-4, and diffusible hydrogen content is shown in Table 2-5, wherein spreads
The mensure of hydrogen adopts gas chromatography, and test five is averaged：
The chemical composition (percentage by weight) of table 2-3 deposited metal
| C | Mn | Si | P | S | Ni | Cr | Mo | V | Fe |
| 0.065 | 1.50 | 0.30 | 0.008 | 0.005 | 3.20 | 0.97 | 0.88 | 0.15 | Surplus |
The mechanical property of table 2-4 deposited metal
Table 2-5 deposited metal diffusible hydrogen content
| Test specimen | Drying condition before welding electrode | Diffusible hydrogen content (ml/100g) |
| Embodiment 2 | 400℃×1h | 2.47 |
Embodiment 3：
Using general manufacturing process in welding rod production industry, make core wire by the core wire formula of table 3-1, according to table 3-2
Coating recipe prepared and prepared electrode coating by wet mixing is dry mixed, electrode coating is coated on core wire, is allowed to into
Type：
Table 3-1 core wire formula (unit：Percentage by weight)
| C | Si | Mn | Cr | Ni | V | P | S | Fe |
| 0.065 | 0.008 | 0.43 | 0.007 | 0.014 | 0.002 | 0.007 | 0.005 | Surplus |
Table 3-2 coating recipe (unit：Percentage by weight)
Chemical property is tested using spark Atomic Emission Spectrometer AES, mechanical property adopt cupping machine, cryostat,
Shock machine is tested, and diffusible hydrogen is tested using gas chromatogram diffusion hydrogen analyzer.Its deposited metal composition
It is shown in Table 3-3, mechanical property is shown in Table 3-4, diffusible hydrogen content is shown in Table 3-5, the mensure of wherein diffusible hydrogen adopts gas chromatography, test
Average for five：
The chemical composition (percentage by weight) of table 3-3 deposited metal
| C | Mn | Si | P | S | Ni | Cr | Mo | V | Fe |
| 0.064 | 1.40 | 0.36 | 0.008 | 0.005 | 3.01 | 0.91 | 0.78 | 0.16 | Surplus |
The mechanical property of table 3-4 deposited metal
Table 3-5 deposited metal diffusible hydrogen content
| Test specimen | Drying condition before welding electrode | Diffusible hydrogen content (ml/100g) |
| Embodiment 3 | 400℃×1h | 2.15 |
Above example shows, using welding rod welding of the present invention, weld strength is more than 1100MPa, and -40 DEG C of ballistic works are more than
27J, diffusible hydrogen content between 2～3ml/100g, high intensity, high tenacity, be particularly suited for 100 feather weight low-alloy steel knot
The welding of structure.
1100MPa grade high-strength of the present invention, high-toughness low-alloy steel welding rod, it is applied to the low-alloy of 100 feather weight
The welding of steel construction, direct current is special, can effectively improve Low Temperature Toughness of Deposited Metals, all-position welding excellent performance, arc stability,
Unbiased arc phenomenon, little, the de- slag that splashes are easy.
Above-described is only the preferred embodiment of the present invention it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, some deformation can also be made and improve, these broadly fall into the present invention
Protection domain.
Claims (2)
1. a kind of 1100MPa grade high-strength, high-toughness low-alloy steel welding rod, are made up of core wire and coating, coating is coated on weldering
Outer core is it is characterised in that described coating accounts for the 45%～55% of welding rod gross weight；On the basis of core wire gross weight, by weight
Percentages, the component of described core wire is as follows：
C：0.05～0.10%；
Si：0.005～0.03%；
Mn：0.30～0.55%；
Cr：0.005～0.20%；
Ni：0.005～0.30%；
V：0.001～0.005%；
P：≤ 0.020%；
S：≤ 0.014%；
Fe：Surplus；
On the basis of coating gross weight, by weight percentage, the component of described coating includes：
Calcium Carbonate：20～30%；
Magnesium carbonate：1～5%；
Brium carbonate：5～10%；
Calcium fluoride：10～18%；
Cryolite：3～10%；
Barium fluoride：1～5%；
Rutile：3～8%；
Titanium dioxide：1～5%；
Silicon dioxide：2～10%；
Electrolytic manganese：5～10%；
Ferrosilicon：2～5%；
Nikel powder：4～8%；
Chromium powder：1～3%；
Molybdenum powder：1～3%；
Vanadium iron：1～3%.
2. 1100MPa grade high-strength as claimed in claim 1, high-toughness low-alloy steel welding rod are it is characterised in that described weldering
The percentage by weight of deposited metal composition that bar is formed is：C：≤ 0.07%, Si：0.2～0.4%, Mn：1.3～
1.8%, Ni：2.6～3.8%, Cr：0.75～1.1%, Mo：0.66～1.0%, V：0.1～0.2%, P：≤ 0.010%, S：
≤ 0.01%, remaining is Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611163874.4A CN106425163A (en) | 2016-12-15 | 2016-12-15 | 1100Mpa grade high-strength high-toughness low-alloy steel electric welding rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611163874.4A CN106425163A (en) | 2016-12-15 | 2016-12-15 | 1100Mpa grade high-strength high-toughness low-alloy steel electric welding rod |
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| Publication Number | Publication Date |
|---|---|
| CN106425163A true CN106425163A (en) | 2017-02-22 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611163874.4A Withdrawn CN106425163A (en) | 2016-12-15 | 2016-12-15 | 1100Mpa grade high-strength high-toughness low-alloy steel electric welding rod |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108274149A (en) * | 2017-12-15 | 2018-07-13 | 武汉铁锚焊接材料股份有限公司 | A kind of 20 control chromium steel welding rods of nuclear power |
| CN108637524A (en) * | 2018-05-14 | 2018-10-12 | 北京智双科技发展有限公司 | A kind of 1500Mpa grade super strengths steel alloy flux-cored wire used for welding |
| CN108672986A (en) * | 2018-07-25 | 2018-10-19 | 武汉铁锚焊接材料股份有限公司 | A kind of high-strength bridge steel welding rod and its application |
| CN110524135A (en) * | 2019-06-27 | 2019-12-03 | 四川大西洋焊接材料股份有限公司 | The anti-hydrogen induced cracking hydrogen sulfide corrosion steel electrode of low-sulfur phosphorus and preparation method |
| CN112570927A (en) * | 2020-12-03 | 2021-03-30 | 天津大桥龙兴焊接材料有限公司 | Ultralow-hydrogen electrode for welding ultrahigh-strength wear-resistant steel and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170653A (en) * | 1997-04-24 | 1998-01-21 | 太原工业大学 | Novel high toughness shock and wear resistant surface welding electrode |
| CN1827288A (en) * | 2006-04-12 | 2006-09-06 | 西华大学 | Bainite welding rod dedicated for repairing rail and assembled frog |
| CN102554500A (en) * | 2010-12-28 | 2012-07-11 | 昆山京群焊材科技有限公司 | High-strength and high-toughness low alloy steel electric welding rod |
| CN104959746A (en) * | 2015-04-18 | 2015-10-07 | 盐城市成功机械制造有限公司 | Self-shielded flux-cored wire for extrusion roller remanufacturing |
-
2016
- 2016-12-15 CN CN201611163874.4A patent/CN106425163A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1170653A (en) * | 1997-04-24 | 1998-01-21 | 太原工业大学 | Novel high toughness shock and wear resistant surface welding electrode |
| CN1827288A (en) * | 2006-04-12 | 2006-09-06 | 西华大学 | Bainite welding rod dedicated for repairing rail and assembled frog |
| CN102554500A (en) * | 2010-12-28 | 2012-07-11 | 昆山京群焊材科技有限公司 | High-strength and high-toughness low alloy steel electric welding rod |
| CN104959746A (en) * | 2015-04-18 | 2015-10-07 | 盐城市成功机械制造有限公司 | Self-shielded flux-cored wire for extrusion roller remanufacturing |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108274149A (en) * | 2017-12-15 | 2018-07-13 | 武汉铁锚焊接材料股份有限公司 | A kind of 20 control chromium steel welding rods of nuclear power |
| CN108637524A (en) * | 2018-05-14 | 2018-10-12 | 北京智双科技发展有限公司 | A kind of 1500Mpa grade super strengths steel alloy flux-cored wire used for welding |
| CN108672986A (en) * | 2018-07-25 | 2018-10-19 | 武汉铁锚焊接材料股份有限公司 | A kind of high-strength bridge steel welding rod and its application |
| CN110524135A (en) * | 2019-06-27 | 2019-12-03 | 四川大西洋焊接材料股份有限公司 | The anti-hydrogen induced cracking hydrogen sulfide corrosion steel electrode of low-sulfur phosphorus and preparation method |
| CN110524135B (en) * | 2019-06-27 | 2022-02-08 | 四川大西洋焊接材料股份有限公司 | Steel welding rod for resisting hydrogen induced cracking and hydrogen sulfide corrosion with low sulfur and phosphorus and preparation method thereof |
| CN112570927A (en) * | 2020-12-03 | 2021-03-30 | 天津大桥龙兴焊接材料有限公司 | Ultralow-hydrogen electrode for welding ultrahigh-strength wear-resistant steel and preparation method thereof |
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Application publication date: 20170222 |