CN109014653B - High-strength gas shielded welding wire capable of eliminating stress - Google Patents
High-strength gas shielded welding wire capable of eliminating stress Download PDFInfo
- Publication number
- CN109014653B CN109014653B CN201710438835.9A CN201710438835A CN109014653B CN 109014653 B CN109014653 B CN 109014653B CN 201710438835 A CN201710438835 A CN 201710438835A CN 109014653 B CN109014653 B CN 109014653B
- Authority
- CN
- China
- Prior art keywords
- percent
- equal
- less
- welding
- welding wire
- 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.)
- Active
Links
- 238000003466 welding Methods 0.000 title claims abstract description 55
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 8
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 5
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 13
- 239000010959 steel Substances 0.000 abstract description 13
- 230000009931 harmful effect Effects 0.000 abstract description 6
- 150000001875 compounds Chemical class 0.000 abstract description 5
- 229910052702 rhenium Inorganic materials 0.000 abstract description 4
- 238000005275 alloying Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- 229910000859 α-Fe Inorganic materials 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to a high-strength gas shielded welding wire capable of eliminating stress, which comprises the following chemical components in percentage by weight: 0.03 to 0.08 percent of C, 0.4 to 0.8 percent of Si, 1.8 to 2.5 percent of Mn, 0.1 to 0.3 percent of Cr, 3.0 to 3.8 percent of Ni, 0.15 to 0.45 percent of Mo, 0.10 to 0.15 percent of Ti, 0.0050 to 0.0080 percent of B, less than or equal to 0.010 percent of Als, 0.0030 to 0.0050 percent of Re, less than or equal to 0.0060 percent of O, less than or equal to 0.0060 percent of N, less than or equal to 0.008 percent of S, less than or equal to 0.009 percent of P, and the balance of Fe and inevitable impurities. The advantages are that: the low-carbon design is adopted, and the selected main alloying elements belong to non-compound forming elements or compound forming elements, so that the harmful effects of impurity elements of steel grades are inhibited or eliminated.
Description
Technical Field
The invention belongs to the field of welding materials, and particularly relates to a solid high-strength gas shielded welding wire with good toughness and good matching property in a welding state and a post-welding stress relief treatment state.
Background
With the needs of economic development and construction, the high-strength structural steel is more and more applied, the consumption of steel can be reduced, the damage to the environment is reduced, and the method has great promotion effect on implementing a sustainable development strategy, changing the traditional industrial development mode with high resource consumption and establishing an environment-friendly national economic system. In order to ensure that the welding structure of the high-strength steel has excellent performance, post-welding stress relief treatment needs to be carried out after welding is finished, but the welding material in the existing market hardly meets the requirement of post-welding stress relief treatment of the welding structure of 80kg grade high-strength steel, according to the contents disclosed by CN200810046960.6 high-strength high-toughness gas shielded welding wire, CN101733580A high-strength high-toughness gas shielded welding wire, CN105081604A700MPa high-toughness automatic submerged arc welding wire and a using method thereof, CN102294554 80 grade 80kg gas shielded welding wire with good impact performance at minus 40 ℃ and a wire rod, the welding material has good welding state performance but the performance after the post-welding stress relief treatment is not related, and the post-welding stress relief treatment in CN102873465A relates to but has lower strength compared with the technical scheme of the patent. The technical solution of the present patent application was made and obtained in order to satisfy the market-appearing need of post-weld heat treatment of welded structures of 80kg grade steel plates.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a high-strength gas shielded welding wire capable of stress relief treatment, deposited metal of the welding wire has good toughness matching in a welding state and a post-weld heat treatment state, and the welding wire is suitable for a welding structure needing post-weld stress relief treatment, such as a welding structure of 80 kg-grade hydroelectric steel.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a high-strength gas shielded welding wire capable of being subjected to stress relief treatment comprises the following chemical components in percentage by weight:
0.03 to 0.08 percent of C, 0.4 to 0.8 percent of Si, 1.8 to 2.5 percent of Mn, 0.1 to 0.3 percent of Cr, 3.0 to 3.8 percent of Ni, 0.15 to 0.45 percent of Mo, 0.10 to 0.15 percent of Ti, 0.0050 to 0.0080 percent of B, less than or equal to 0.010 percent of Als, 0.0030 to 0.0050 percent of Re, less than or equal to 0.0060 percent of O, less than or equal to 0.0060 percent of N, less than or equal to 0.008 percent of S, less than or equal to 0.009 percent of P, and the balance of Fe and inevitable impurities.
The principle of the component design of the high-strength solid gas-shielded welding wire disclosed by the invention is as follows:
c: the gap is dissolved in ferrite in the welding seam; the content of the element C has great influence on the obdurability and the tissue composition of the welding seam, the strengthening effect is obvious, the welding seam strength can be obviously improved, the generation of proeutectoid ferrite is inhibited, and the formation of acicular ferrite is promoted; but it will greatly reduce the impact toughness and raise the ductile-brittle transition temperature, thus greatly reducing the toughness of the weld. In the process of post-weld heat treatment, the excessively high carbon content is easy to precipitate in the form of compounds in the process of stress relief treatment, so that the impact toughness of the deposited metal after the post-weld stress relief treatment is greatly reduced, and therefore, the low-carbon design is adopted in the technical scheme of the invention.
Si: has the functions of deoxidizing and strengthening the strength of the welding seam matrix. The hardenability of weld metal can be improved, the generation of proeutectoid ferrite is inhibited, and the formation of acicular ferrite is promoted; however, too high a Si content causes a decrease in plasticity and toughness.
Mn: is an effective element for strengthening and toughening the welding line, is beneficial to deoxidation in the welding line and prevents the formation of iron sulfide causing thermal cracking; the hardenability of the weld metal can be improved, the generation of proeutectoid ferrite is inhibited, and the formation of acicular ferrite is promoted. Can improve the strength of the steel and weaken or eliminate the adverse effect of sulfur.
Ni, a commonly used element to obtain excellent low temperature toughness. It can raise hardenability, promote the formation of acicular ferrite, raise the strength and toughness of weld seam, especially the low-and-medium-temp impact toughness, and reduce ductile-brittle transition temp. Moreover, nickel does not form a compound in the steel alloy, and the impact toughness of the deposited metal is not reduced due to the appearance of precipitates in the post-welding stress relief treatment process.
Cr: the method is favorable for improving the content of acicular ferrite, reducing proeutectoid ferrite, refining ferrite grains, and forming dispersed carbide with carbon.
Mo: is a main element for obtaining high-strength weld metal; as a high-melting-point substance, the material has good effect of grain refinement, and does not greatly damage the plastic toughness while improving the strength. Can obviously improve the hardenability of the steel and prevent the temper brittleness.
Ti: is a microalloy strengthening element; ti has strong affinity with C, N, and is easy to form precipitation phase and become nucleation particles and pinning particles of grain boundary, so as to achieve the effect of refining the grain structure of steel, thereby improving the strength and toughness of welding seam. Ti also has stronger affinity with S, thus achieving the purposes of spheroidizing non-metallic inclusions and improving uneven performance.
B: the combined addition of Ti and B into the weld seam can inhibit the transformation of proeutectoid ferrite and expand the temperature range of acicular ferrite transformation, so that a great amount of acicular ferrite can be obtained in the weld seam, and the toughness matching of weld seam metal is greatly improved.
S and P: is a harmful element, and the content of the harmful element is controlled to improve the purity and the welding performance of a welding seam. S and P are easy to segregate; non-metallic inclusions and second phase particles are easily formed between the grains. Can obviously reduce the plasticity and toughness of steel, and the content of S, P in the welding wire should be strictly controlled.
Re: the rare earth has the functions of deoxidation and desulfurization, and reduces and refines or spheroidizes inclusions in steel. The rare earth has a certain solid solution amount in steel, and the segregation of phosphorus and sulfur and low-melting-point impurities of lead, tin, arsenic, antimony and bismuth in grain boundaries can be inhibited by the segregation of the rare earth in the grain boundaries or compounds with higher melting points can be formed with the impurities, the harmful effect of the low-melting-point impurities is eliminated, the grain boundaries are purified and strengthened, the formation and the expansion of intergranular cracks are hindered, and the plasticity and the toughness are improved.
The low-carbon design is adopted, the selected main alloy elements belong to non-carbide forming elements or weak-carbon compound forming elements, so that the structural state after stress relief treatment is further improved, and the trace rare earth elements in the welding wire can inhibit or eliminate the harmful effect of impurity elements in deposited metal. The performance, especially the impact toughness, of the deposited metal after stress relief treatment is improved, and Ti, B and Re elements are adopted to further refine the structure and inhibit or eliminate the harmful effect of impurity elements in the deposited metal. According to the action characteristics of the alloy elements, the technical scheme of the invention is formed. Finally obtaining the solid gas shield welding wire with good obdurability matching in both a welding state and a post-welding stress relief state. The tensile strength of the deposited metal of the welding wire in a welding state reaches more than 800MPa, the tensile strength of the welding wire after stress relief treatment at 550 ℃ for 4h reaches more than 780MPa, and the-40 ℃ impact functions of the welding state and the stress relief state can reach more than 60J.
Detailed Description
The present invention is described in detail below, but it should be noted that the practice of the present invention is not limited to the following embodiments.
The high-strength gas shielded welding wire capable of eliminating stress treatment comprises the following chemical components in percentage by weight:
0.03 to 0.08 percent of C, 0.4 to 0.8 percent of Si, 1.8 to 2.5 percent of Mn, 0.1 to 0.3 percent of Cr, 3.0 to 3.8 percent of Ni, 0.15 to 0.45 percent of Mo, 0.10 to 0.15 percent of Ti, 0.0050 to 0.0080 percent of B, less than or equal to 0.010 percent of Als, 0.0030 to 0.0050 percent of Re, less than or equal to 0.0060 percent of O, less than or equal to 0.0060 percent of N, less than or equal to 0.008 percent of S, less than or equal to 0.009 percent of P, and the balance of Fe and inevitable impurities.
The welding test adopts 80% Ar + 20% CO2The gas mixture of (1) is protected, and the specific components of the examples are shown in Table 1.
TABLE 1 compositions of the examples
The mechanical properties of the weld state of the deposited metal of each example are shown in Table 2.
TABLE 2 mechanical properties of the weld state of the deposited metal of each example
The mechanical properties in post-weld stress-relief state of the various examples are shown in Table 3.
TABLE 3 mechanical Properties of post-weld stress relief State for the examples
From the above examples, it is understood that the tensile strength of the welding wire in the deposited metal state is 800MPa or more, the tensile strength after stress relief treatment at 550 ℃ for 4 hours is 780MPa or more, and the-40 ℃ impact energy in both the welded state and the stress relief state is 60J or more. The welding requirement of the welding structure of 80 kg-grade hydroelectric steel is met.
Claims (1)
1. A high-strength gas shielded welding wire capable of being subjected to stress relief treatment is characterized by comprising the following chemical components in percentage by weight:
0.04 to 0.08 percent of C, 0.4 to 0.7 percent of Si, 1.8 to 2.2 percent of Mn, 0.1 to 0.3 percent of Cr, 3.3 to 3.8 percent of Ni, 0.15 to 0.45 percent of Mo, 0.11 to 0.15 percent of Ti, 0.0050 to 0.0080 percent of B, less than or equal to 0.010 percent of Als, 0.0030 to 0.0048 percent of RE, less than or equal to 0.0060 percent of O, less than or equal to 0.0060 percent of N, less than or equal to 0.008 percent of S, less than or equal to 0.009 percent of P, and the balance of Fe and inevitable impurities;
the-40 ℃ impact energy of the welding state and the stress relief state is more than 60J.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710438835.9A CN109014653B (en) | 2017-06-12 | 2017-06-12 | High-strength gas shielded welding wire capable of eliminating stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710438835.9A CN109014653B (en) | 2017-06-12 | 2017-06-12 | High-strength gas shielded welding wire capable of eliminating stress |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109014653A CN109014653A (en) | 2018-12-18 |
| CN109014653B true CN109014653B (en) | 2020-01-07 |
Family
ID=64628510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710438835.9A Active CN109014653B (en) | 2017-06-12 | 2017-06-12 | High-strength gas shielded welding wire capable of eliminating stress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109014653B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111390425B (en) * | 2020-03-18 | 2021-12-28 | 唐山钢铁集团有限责任公司 | Welding wire for hot stamping forming Al-Si coating plate laser tailor-welding and tailor-welding method |
| CN115502608B (en) * | 2022-10-14 | 2024-07-30 | 成都先进金属材料产业技术研究院股份有限公司 | Molten steel for fine-grain reinforced high-strength steel wire containing boron rare earth, high-strength steel wire and production method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5487648A (en) * | 1977-12-26 | 1979-07-12 | Nippon Kokan Kk <Nkk> | Submerged arc welding wire |
| JP2857318B2 (en) * | 1994-03-31 | 1999-02-17 | 株式会社神戸製鋼所 | Welding wire for high tensile steel |
| JPH08267273A (en) * | 1995-03-29 | 1996-10-15 | Nippon Steel Corp | Wire for gas metal arc welding for high tensile steel |
| CN1341480A (en) * | 2001-08-01 | 2002-03-27 | 束润涛 | Rare earth alloy steel tower-type container capable of resisting corrosion of hydrogen sulfide |
| KR100709521B1 (en) * | 2001-11-13 | 2007-04-20 | 제이에프이 스틸 가부시키가이샤 | Welding joint of large heat input welding and welding method thereof |
| CN101722386B (en) * | 2009-12-30 | 2011-12-28 | 首钢总公司 | Gas shield welding wire with high strength and tenacity |
| CN101992365B (en) * | 2010-12-20 | 2013-07-24 | 成都新大洋焊接材料有限责任公司 | High-strength and high-tenacity gas shielded welding wire |
| CN104400254A (en) * | 2014-11-25 | 2015-03-11 | 宝鸡石油钢管有限责任公司 | Welding wire applicable to submerged-arc welding of H2S corrosion resistant ultralow manganese pipeline steel |
-
2017
- 2017-06-12 CN CN201710438835.9A patent/CN109014653B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109014653A (en) | 2018-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3225349B1 (en) | Super high strength gas shielded welding wire containing v and manufacturing method therefor | |
| CN106736029B (en) | A kind of high-nitrogen austenitic stainless steel welding wire and its welding procedure | |
| CN101992365B (en) | High-strength and high-tenacity gas shielded welding wire | |
| KR101629129B1 (en) | Base material for high-toughness clad steel plate and method for producing said clad steel plate | |
| CN102528319A (en) | High-strength high-ductility submerged-arc welding wire | |
| CN101234459A (en) | 80 kilogram-scale low welding crack sensibility high-strength steel plate special-purpose welding stick | |
| CN112917043A (en) | Gas shielded welding wire for X100 pipeline steel welding and preparation method | |
| WO2014199488A1 (en) | Ultrahigh-tensile-strength steel plate for welding | |
| KR101923948B1 (en) | Submerged arc welding wire and weldling method | |
| CN101905393B (en) | Solid welding wire for high-toughness structural steel | |
| CN109014653B (en) | High-strength gas shielded welding wire capable of eliminating stress | |
| CN110802344A (en) | 785 MPa-grade high-strength high-toughness consumable electrode active gas protection welding wire for ocean engineering and application thereof | |
| CN1746326A (en) | Needle ferrichrome-X70 pipeline steel with high crack-arresting toughenss and its production | |
| CN112719692A (en) | 900 MPa-grade high-strength steel gas shielded solid welding wire and preparation method thereof | |
| CN110640350B (en) | Ultrahigh-strength gas shielded welding wire and wire rod | |
| CN106944763B (en) | High-strength manganese-series wear-resistant steel welding wire | |
| CN102114580B (en) | Welding seam-strengthening MAG welding wire | |
| JP5493658B2 (en) | A method for producing non-tempered thick high-strength steel with high heat input heat-affected zone toughness. | |
| CN111154963A (en) | Welding heat influence region-resistant softened submarine pipeline steel and preparation method thereof | |
| CN112917042B (en) | High-toughness gas-shielded flux-cored wire for X80 pipeline steel and preparation method thereof | |
| CN112705880B (en) | Low-temperature high-toughness welding wire for X80 pipeline steel and preparation method thereof | |
| JP4356156B2 (en) | Steel plate for welded structure with excellent toughness of heat affected zone | |
| CN113828963A (en) | Low-yield-ratio anti-seismic high-toughness corrosion-resistant gas shielded welding wire for building structure and application thereof | |
| CN106392370A (en) | Welding wire for ocean engineering and smelting method thereof | |
| CN1970214A (en) | Gas protection welding wire for high-tensile structural steel |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |