CN116810214A - Low-temperature high-strength submerged arc welding wire and application thereof - Google Patents
Low-temperature high-strength submerged arc welding wire and application thereof Download PDFInfo
- Publication number
- CN116810214A CN116810214A CN202310755829.1A CN202310755829A CN116810214A CN 116810214 A CN116810214 A CN 116810214A CN 202310755829 A CN202310755829 A CN 202310755829A CN 116810214 A CN116810214 A CN 116810214A
- Authority
- CN
- China
- Prior art keywords
- low
- welding wire
- equal
- strength
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 72
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 30
- 239000000126 substance Substances 0.000 claims abstract description 14
- 230000004907 flux Effects 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 3
- 229910004261 CaF 2 Inorganic materials 0.000 claims description 3
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052748 manganese Inorganic materials 0.000 abstract description 6
- 229910052750 molybdenum Inorganic materials 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 229910052804 chromium Inorganic materials 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000005253 cladding Methods 0.000 description 14
- 239000010936 titanium Substances 0.000 description 13
- 238000012360 testing method Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 239000011572 manganese Substances 0.000 description 7
- 229910000859 α-Fe Inorganic materials 0.000 description 7
- 229910001566 austenite Inorganic materials 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000011733 molybdenum Substances 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004021 metal welding Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000010583 slow cooling Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Nonmetallic Welding Materials (AREA)
Abstract
The invention belongs to the field of low-temperature high-strength matched welding materials, and discloses a low-temperature high-strength submerged arc welding wire and application thereof, wherein the low-temperature high-strength submerged arc welding wire comprises the following chemical components in percentage by weight: c0.06-0.10; si 0.15-0.25; mn 1.40-1.60; p is less than or equal to 0.012; s is less than or equal to 0.008; cr 0.30-0.40; ni2.80-3.00; cu is less than or equal to 0.30; mo is 0.40-0.60; ti0.04-0.08, fe and unavoidable impurities in balance, and special welding flux is matched. The invention adopts the design thought of low carbon and Mn-Ni-Cr-Mo component system, and the carbon is controlled below 0.10 percent, thereby achieving the purposes of low cold cracking sensitivity and high and low temperature toughness of the weld metal. Further, the welding wire strength is improved by adding an element such as Mn, cr, ni, mo. One of the characteristics of the welding wire is to improve the Ni content and reduce the contents of Cr and Mo elements so as to achieve the purpose of improving the low-temperature toughness. In addition, the Ti microalloy elements are added, and meanwhile, the content of S, P and other elements is limited, so that the toughness of the weld metal is further improved.
Description
Technical Field
The invention belongs to the field of low-temperature high-strength matched welding materials, and particularly relates to a low-temperature high-strength submerged arc welding wire and application thereof.
Background
With the high-speed development of the industry in China, the strength grade of the steel materials gradually develops towards the high strength and high toughness. The marine low-temperature storage tank in the marine field gradually uses Q690E/F steel plates with the yield strength grade of 690Mpa, the research and development of matched welding materials of the steel plates with high-strength low-temperature requirements is still in a lagging state, and even if the existing welding wires meet the requirement of equal-strength matching, the low-temperature toughness can not meet the requirement, or the requirements of strength and low-temperature toughness can be met, but the production efficiency is lower, the cost of the welding wires is greatly increased, so that the submerged arc solid welding wires with high-strength low-temperature toughness and high welding efficiency are very urgent to develop.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the submerged arc welding material with high strength, high toughness and low cost, which is suitable for welding with the yield strength of more than or equal to 690MPa, the impact of more than or equal to 69J at minus 60 ℃ and the impact of more than or equal to 47J at minus 40 ℃ after heat treatment.
The present invention achieves the above technical object by the following means.
The low-temperature high-strength submerged arc welding wire comprises the following chemical components in percentage by weight: c0.06-0.10; si 0.15-0.25; mn 1.40-1.60; p is less than or equal to 0.012; s is less than or equal to 0.008; cr 0.30-0.40; ni2.80-3.00; cu is less than or equal to 0.30; mo is 0.40-0.60; 0.04-0.08% of Ti, and the balance of Fe and unavoidable impurities.
The KGF-80HG sintered flux comprises the following components in percentage by weight: siO (SiO) 2 +TiO 2 ：10-20％，CaO+MgO：30-40％，Al 2 O 3 +MnO：15-25％；CaF 2 ：20-30％，P≤0.040％，S≤0.035％；
After the welding wire and the welding flux are adopted for welding, the chemical components of the cladding metal are as follows in percentage by weight: c0.03-0.06; si 0.20-0.30; mn 1.50-1.80; p is less than or equal to 0.015; s is less than or equal to 0.015; cr 0.30-0.40; ni is more than or equal to 2.50; mo is more than or equal to 0.45; cu is less than or equal to 0.35, ti is less than or equal to 0.10, and the balance is Fe and unavoidable impurities.
1) The welding wire has higher requirements on strength and low-temperature toughness, so that the design thought of a low-carbon and Mn-Ni-Cr-Mo component system is adopted in component design, and carbon is controlled below 0.10%, thereby achieving the purposes of low weld metal cold cracking sensitivity and high low-temperature toughness. Further, the welding wire strength is improved by adding an element such as Mn, cr, ni, mo. One of the characteristics of the welding wire is to improve the Ni content and reduce the contents of Cr and Mo elements so as to achieve the purpose of improving the low-temperature toughness. In addition, the Ti microalloy elements are added, and meanwhile, the content of S, P and other elements is limited, so that the toughness of the weld metal is further improved.
2) Carbon is the main strengthening element in the weld joint, has the most obvious influence on the strength and hardness of weld joint metal, directly determines the type of weld joint structure, and has great influence on the generation of solidification cracks. Therefore, the carbon content in the welding seam is ensured to be low, so the carbon content of the welding wire developed by the invention is determined to be between 0.06 and 0.10 percent.
3) The silicon plays a role in deoxidizing the metal oxygen reaction of the weld joint, plays a role in solid solution strengthening as an alloy element, reduces the toughness of the weld joint metal while increasing the strength of the weld joint metal, and is considered to be beneficial to the toughness of the weld joint when the silicon content in the weld joint is kept between 0.25% and 0.35%. Since the flux contains a certain amount of Si, the silicon content of the welding wire developed by the invention is determined to be between 0.15 and 0.25 percent.
4) Manganese is an austenite stabilizing element, mn in the welding wire can play a role in deoxidization, and can react with sulfur to generate stable MnS, so that the capability of heat crack resistance and lamellar tearing of weld metal is improved, and the yield strength and tensile strength of manganese in the weld are in positive linear relation with those of the weld metal. However, the higher the manganese content is, the better, and the higher the manganese content is, the lower the plasticity and the weldability of the weld joint are. The welding wire of the present invention therefore defines Mn between 1.40-1.60%.
5) Molybdenum is an element that reduces the austenite phase region and has the main effect of delaying the transformation of proeutectoid ferrite to facilitate the formation of bainitic structures. Molybdenum can improve the strength and hardness of the welding seam, refine grains, prevent tempering brittleness and overheating tendency, and improve plasticity, reduce the tendency of crack generation and improve impact toughness when the molybdenum content is less than 0.60 percent. The welding wire of the present invention has molybdenum in the range of 0.40-0.60%.
6) Chromium is an element for expanding an austenite phase region, has similar effect on weld joint strength as manganese, but is weaker than manganese, when the weld joint metal strength is increased along with the increase of Cr content and the Cr content exceeds 0.5%, a side plate strip ferrite body with a second phase is generated along with the increase of Cr content, so that the toughness of the weld joint is deteriorated, and the welding wire provided by the invention ensures that the chromium content is between 0.30 and 0.40%.
7) Nickel is an austenite stabilizing element, also plays a solid solution strengthening role in weld metal, can increase acicular ferrite precipitation, refines a structure, and is a weak strengthening alloy element. When Mn is contained in the weld metal, acicular ferrite is favorably formed, thereby improving the toughness of the weld metal. The welding wire of the present invention has nickel content of 2.80-3.00%.
8) Titanium is an element for shrinking an austenite phase region, ti (C, N) and TiO inclusion particles with extremely high affinity with N are added into weld metal, and the high-melting-point compound particles can serve as crystallization cores to promote the nucleation of acicular ferrite in austenite crystals and refine weld grains. When the titanium content is less than 0.03%, the quantity of acicular ferrite is in direct proportion to the titanium content. However, when the Ti content is more than 0.03%, the amount of acicular ferrite decreases as the Ti content increases, thereby affecting the toughness of the weld. The inventive wire determines titanium between 0.04-0.08% in view of burn-out in welding.
9) The S, P element reduces the low-temperature impact toughness of the weld metal and should strictly limit the content of the weld metal in the welding wire to ensure that S, P in the weld metal is controlled at a lower level.
The beneficial effects of the invention are as follows:
the welding wire has excellent low-temperature toughness while maintaining high strength through the optimized design of the components of the welding wire and the welding flux, and can realize the welding performance that the yield strength is more than or equal to 690MPa, the impact at minus 60 ℃ is more than or equal to 69J in a welding state and the impact at minus 40 ℃ is more than or equal to 47J after heat treatment.
The submerged arc welding wire can replace the existing welding rod with the same level, greatly improves the production efficiency and saves the production cost.
Detailed Description
The present invention will be further described with reference to specific examples, but the scope of the present invention is not limited thereto.
Example 1:
the welding wire is processed according to the technical scheme, wherein the steelmaking process is a converter-refining furnace-VD vacuum treatment-continuous casting process, molten iron with low S, P content is selected, parameters such as steelmaking components, tapping temperature, superheat degree, drawing speed and the like are strictly controlled in the process, square billets are produced, square billets are hot-rolled into wire rods with phi of 5.5mm, and copper-plated or copper-free welding wires with phi of 4.0mm are manufactured through drawing processes such as surface treatment, drawing treatment and the like, wherein the chemical components of the welding wire are C0.06%; si 0.20%; mn 1.50%; p0.007%; s0.004%; cr 0.35%; ni 2.85%; cu 0.10%; mo 0.48%; 0.06% of Ti, and the balance of Fe and unavoidable impurities.
The KGF-80HG sintered flux matched with the invention is used for carrying out cladding metal welding test, and the flux is as follows: siO (SiO) 2 +TiO 2 ：10-20％，CaO+MgO：30-40％，Al 2 O 3 +MnO：15-25％；CaF 2 ：20-30％，P≤0.040％，S≤0.035％；
The welding standard is as follows: the welding current is 530-550A, the welding voltage is 28-30V, the welding speed is 39-41cm/min, the preheating temperature is 100 ℃, the interlayer temperature is 140-160 ℃, and the post heat is 250 ℃ for 2 hours. The thickness of the welding test plate is 20mm, the heel gap is 18mm, and the bevel angle is 21 ℃. The performance of the post-welding cladding metal is as follows: tensile strength R m =827 MPa, yield strength R el 734MPa, elongation 22%, -60 ℃ impact energy a kv =113J. The test plate is subjected to heat treatment of heat preservation and slow cooling for 550 ℃ for 2 hours, and the performance of cladding metal after the heat treatment is as follows: tensile strength R m =834 MPa, yield strength R el =721 MPa, elongation 21%, -40 ℃ impact energy a kv =101J. The chemical composition of the cladding metal is C0.03%; si 0.23%; mn1.65%; p0.008%; s0.003%; cr 0.38; ni 2.71%; mo 0.66%; cu 0.07%; 0.04% of Ti.
Example 2:
the technical scheme of the embodiment 1 is adopted, and the chemical composition of the produced welding wire is C0.07%; si 0.18%; mn1.60%; p0.005%; s0.005%; cr 0.32%; ni 2.70%; cu 0.11%; mo 0.45%; ti 0.07%, the balance Fe and unavoidable impurities.
And carrying out a cladding metal welding test on KGF-80HG sintered flux of a matched company, wherein the welding standard is as follows: the welding current is 540-560A, the welding voltage is 29-30V, the welding speed is 40-42cm/min, the preheating temperature is 100 ℃, the interlayer temperature is 150-160 ℃, and the post heat is 250 ℃ for 2 hours. The thickness of the welding test plate is 20mm, the heel gap is 18mm, and the bevel angle is 21 ℃. The performance of the post-welding cladding metal is as follows: tensile strength R m =814 MPa, yield strength R el =722 MPa, elongation a=23%, -60 ℃ impact energy a kv =99j. The test plate is subjected to heat treatment of heat preservation and slow cooling for 550 ℃ for 2 hours, and the performance of cladding metal after the heat treatment is as follows: tensile strength R m =841 MPa, yield strength R el 738MPa, elongation 20%, impact energy a at-40 °c kv =97j. The chemical composition of the cladding metal is C0.04%; si 0.21%; mn 1.72%; p0.007%; s0.003%; cr 0.35; ni2.69%; mo 0.63%; cu 0.08%; 0.03% of Ti.
Example 3:
the technical scheme of the embodiment 1 is adopted, and the chemical components of the produced welding wire are C0.06%; si 0.15%; mn1.65%; p0.006%; s0.005%; cr 0.37%; ni 2.80%; cu 0.10%; mo 0.47%; 0.06% of Ti, and the balance of Fe and unavoidable impurities.
And carrying out a cladding metal welding test on KGF-80HG sintered flux of a matched company, wherein the welding standard is as follows: the welding current is 550-570A, the welding voltage is 28-31V, the welding speed is 41-42cm/min, the preheating temperature is 100 ℃, the interlayer temperature is 140-150 ℃, and the post heat is 250 ℃ for 2 hours. The thickness of the welding test plate is 20mm, the heel gap is 18mm, and the bevel angle is 21 ℃. The performance of the post-welding cladding metal is as follows: tensile strength R m 836MPa, yield strength R el 747MPa, elongation a=21%, -60 ℃ impact energy a kv =107J. The test plate is subjected to heat treatment of heat preservation and slow cooling for 550 ℃ for 2 hours, and the performance of cladding metal after the heat treatment is as follows: tensile strength R m =849 MPa, yield strength R el =726 MPa, elongation 22%, -40 ℃ impact energy a kv =100deg.C. The chemical composition of the cladding metal is C0.04%; si 0.20%; mn 1.73%; p0.006%; s0.004%; cr 0.39; ni2.79%; mo 0.67%. The method comprises the steps of carrying out a first treatment on the surface of the Cu 0.06%; 0.03% of Ti.
TABLE 1 cladding Metal Properties for each case
The examples are preferred embodiments of the present invention, but the present invention is not limited to the above-described embodiments, and any obvious modifications, substitutions or variations that can be made by one skilled in the art without departing from the spirit of the present invention are within the scope of the present invention.
Claims (7)
1. The low-temperature high-strength submerged arc welding wire is characterized by comprising the following chemical components in percentage by weight: c0.06-0.10; si 0.15-0.25; mn 1.40-1.60; p is less than or equal to 0.012; s is less than or equal to 0.008; cr 0.30-0.40; ni2.80-3.00; cu is less than or equal to 0.30; mo is 0.40-0.60; ti0.04-0.08, and Fe and unavoidable impurities in balance.
2. The low-temperature high-strength submerged arc welding wire of claim 1, wherein the chemical components in weight percent are: c0.06%; si 0.20%; mn 1.50%; p0.007%; s0.004%; cr 0.35%; ni 2.85%; cu 0.10%; mo 0.48%; 0.06% of Ti, and the balance of Fe and unavoidable impurities.
3. The low-temperature high-strength submerged arc welding wire of claim 1, wherein the chemical components in weight percent are: c0.07%; si 0.18%; mn1.60%; p0.005%; s0.005%; cr 0.32%; ni 2.70%; cu 0.11%; mo 0.45%; ti 0.07%, the balance Fe and unavoidable impurities.
4. The low-temperature high-strength submerged arc welding wire of claim 1, wherein the chemical components in weight percent are: c0.06%; si 0.15%; mn1.65%; p0.006%; s0.005%; cr 0.37%; ni 2.80%; cu 0.10%; mo 0.47%; 0.06% of Ti, and the balance of Fe and unavoidable impurities.
5. The application method of the low-temperature high-strength submerged arc welding wire is characterized in that KGF-80HG sintered flux is adopted for welding.
6. The method of claim 5, wherein the KGF-80HG sintered flux comprises the following components in weight percent: siO (SiO) 2 +TiO 2 ：10-20％，CaO+MgO：30-40％，Al 2 O 3 +MnO：15-25％；CaF 2 ：20-30％，P≤0.040％，S≤0.035％。
7. The method of claim 5, wherein the welding wire of any one of claims 1 to 4 is used to weld with KGF-80HG sintered flux, and the clad metal comprises the following chemical components in weight percent: c0.03-0.06; si 0.20-0.30; mn 1.50-1.80; p is less than or equal to 0.015; s is less than or equal to 0.015; cr 0.30-0.40; ni is more than or equal to 2.50; mo is more than or equal to 0.45; cu is less than or equal to 0.35, ti is less than or equal to 0.10, and the balance is Fe and unavoidable impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310755829.1A CN116810214A (en) | 2023-06-26 | 2023-06-26 | Low-temperature high-strength submerged arc welding wire and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310755829.1A CN116810214A (en) | 2023-06-26 | 2023-06-26 | Low-temperature high-strength submerged arc welding wire and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116810214A true CN116810214A (en) | 2023-09-29 |
Family
ID=88116185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310755829.1A Pending CN116810214A (en) | 2023-06-26 | 2023-06-26 | Low-temperature high-strength submerged arc welding wire and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116810214A (en) |
-
2023
- 2023-06-26 CN CN202310755829.1A patent/CN116810214A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2009041079A (en) | Steel for welded structure having excellent toughness in weld heat-affected zone, method for producing the same, and method for producing welded structure | |
| KR100622888B1 (en) | Steel product for high heat input welding and method for production thereof | |
| JPWO2010134323A1 (en) | Steel for welding and method for manufacturing the same | |
| CN112247399A (en) | 700 MPa-level annealing-free drawing high-strength steel gas protection solid welding wire | |
| CN103391829A (en) | Flux-cored arc welding wire for providing superior toughness and weldability to a welded joint at a low temperature, and welded joint using same | |
| CN112719692B (en) | 900 MPa-grade high-strength steel gas shielded solid welding wire and preparation method thereof | |
| WO2024082955A1 (en) | Corrosion-resistant 460 mpa-grade steel plate and production method therefor | |
| CN113637911A (en) | 800 MPa-grade high heat input resistant welding pressure vessel steel and preparation method thereof | |
| JP2653594B2 (en) | Manufacturing method of thick steel plate with excellent toughness of weld heat affected zone | |
| US20240058900A1 (en) | Wire rod for gas shielded welding wire and welding wire | |
| CN109014653B (en) | High-strength gas shielded welding wire capable of eliminating stress | |
| JP2005213534A (en) | Method for producing steel material excellent in toughness at welding heat affected zone | |
| WO2021233228A1 (en) | Wire rod for gas shielded welding wire and gas shielded welding wire | |
| CN110640350A (en) | Ultrahigh-strength gas shielded welding wire and wire rod | |
| JP5493658B2 (en) | A method for producing non-tempered thick high-strength steel with high heat input heat-affected zone toughness. | |
| CN116810214A (en) | Low-temperature high-strength submerged arc welding wire and application thereof | |
| JPS63210235A (en) | Manufacture of steel excellent in toughness at low temperature in welding heat affected zone | |
| JPH05195156A (en) | High-manganese ultrahigh tensile strength steel excellent in toughness in heat affected zone and its production | |
| JP2000226633A (en) | Steel for electron beam welding excellent in toughness | |
| CN112139242B (en) | Steel for large heat input welding and method for improving toughness of heat affected zone of steel | |
| JPS621842A (en) | Tough, high tension steel having superior toughness in weld zone | |
| JP2587564B2 (en) | Manufacturing method of steel with excellent low-temperature toughness of weld heat affected zone | |
| CN117943739A (en) | Wire rod with yield strength of 1100MPa for ultrahigh-strength gas shielded welding wire | |
| CN117260064A (en) | 800 MPa-level gas shielded solid welding wire for coating-free weathering steel | |
| CN113828963A (en) | Low-yield-ratio anti-seismic high-toughness corrosion-resistant gas shielded welding wire for building structure and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |