CN108500509A - Solid core welding wire - Google Patents
Solid core welding wire Download PDFInfo
- Publication number
- CN108500509A CN108500509A CN201810241874.4A CN201810241874A CN108500509A CN 108500509 A CN108500509 A CN 108500509A CN 201810241874 A CN201810241874 A CN 201810241874A CN 108500509 A CN108500509 A CN 108500509A
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- China
- Prior art keywords
- welding wire
- solid core
- core welding
- steel
- low
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Classifications
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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
- B23K35/3073—Fe as the principal constituent with Mn as next major constituent
Abstract
The present invention relates to field of welding material, and in particular to a kind of solid core welding wire of low-alloy high-strength steel, the solid core welding wire component are by weight percentage：C：0.06 ~ 0.12, Mn：1.35 ~ 2.0, Si：0.65 ~ 1.05, Re：0.01 ~ 0.05, B：0.001 ~ 0.003, Ti：0.015 ~ 0.035, Ni：0.05 ~ 0.15, Cr：0.05 ~ 0.2, Cu：≤ 0.5, P：≤ 0.015, S：≤ 0.015, surplus is Fe and inevitable impurity.After the solid core welding wire welding of the present invention, appearance of weld is beautiful, it splashes small, crack sensitivity is low, deposited metal mechanical property test is carried out with Q460E steel plates, deposited metal tensile strength is more than 670MPa, and yield strength is more than 560 MPa, rate elongation mean value is 24%, and 20 DEG C of impact absorbing energy mean values are 125J.
Description
Technical field
The present invention relates to field of welding material, and in particular to a kind of solid core welding wire of low-alloy high-strength steel.
Background technology
In order to meet the manufacture requirement of electric power pylon especially UHV transmission steel tower, mitigate steel tower dead weight, enhancing steel tower
Bearing capacity extends its service life and promotes economic benefit, it is necessary to improve (higher for the steel strength of extra-high voltage iron tower
Ballistic work, particularly important particularly with the low-temperature impact work in northern winter), therefore the higher low-alloy high-strength steel of intensity is extra-high
Use in weight tower seems particularly urgent and important, such as Q460.With the raising of strength of parent, in order to ensure the strong of weld seam
Degree needs that the alloying element of sufficient amount is added into welding wire to improve the intensity of weld seam, existing low-alloy high-strength steel welding wire one
As intensity improved using the more expensive alloying element such as Mo, or a certain amount of Cr members of cooperation are usually strengthened.
With the increase of Alloy Elements Mo and Cr, the intensity of weld seam is strengthened, but the toughness of weld seam is in decline simultaneously
Trend, weld seam easy tos produce hardened structure, and cracking resistance declines.Therefore, how to ensure that weld seam has while high intensity
Higher toughness and -20 DEG C of impact resistances are to improve the vital factor of weldquality.Obviously, harmful member of weld seam is removed
Plain (arsenic, tin, antimony, lead and the bismuth of such as low melting point) inhibits the segregation of harmful element, purifies seam organization, changes seam organization
In field trash pattern, quantity and distribution situation, refine seam organization, to ensure weldquality have the function of it is positive.
Invention content
The purpose of the present invention is for the problem in the prior art, seam organization can be purified, reduce weld seam by providing one kind
Middle low melting point harmful element, the field trash for improving seam organization, the low-alloy high-strength steel solid core welding wire for refining seam organization.
To achieve the above object, the present invention uses above-mentioned technical solution：A kind of solid core welding wire of low-alloy high-strength steel,
It is characterized in that, the component of the solid core welding wire is C by weight percentage：0.06~0.12 (%), Mn：1.35~2.0 (%),
Si：0.65~1.05 (%), Re：0.01~0.05 (%), B：0.001~0.003 (%), Ti：0.015~0.035 (%),
Ni：0.05~0.15 (%), Cr：0.05~0.2 (%), Cu：0.15~0.5 (%), P：≤ 0.015 (%), S：≤0.015
(%), surplus are Fe and inevitable impurity.
The component of the solid core welding wire is C by weight percentage：0.08 (%), Mn：2.0 (%), Si：0.7 (%),
Re：0.03 (%), B：0.002 (%), Ti：0.03 (%), Ni：0.1 (%), Cr：0.15 (%), Cu：0.25 (%), P：
0.005 (%), S：0.005 (%), surplus are Fe and inevitable impurity.
The rare earth element is neodymium：Praseodymium：Cerium combines.
The weight percent neodymium of the rare earth element：Praseodymium：Cerium=1:1:2~3, in the further preferably described rare earth element
Neodymium：Praseodymium：The weight ratio of cerium is 1：1：2.5.
In the chemical composition of the solder wire material composition, 30 >=Ti/B >=10.
It is the essential element effect and restriction of the present invention below：
Ti：0.015~0.035.
Ti forms tiny carbide and nitride or carboritride in weld seam, Pinning in grain boundaries,
The recrystallization that austenite is prevented in heating process, delays the crystal grain for recrystallizing austenite to grow up, is conducive to welding wire preparation process
Control, and the compound formed can be used as equiax crystal, refine the tissue of weld seam, improve the intensity and yield strength of weld seam.
Ti weight percent contents in solid core welding wire of the present invention are 0.015~0.035.
The present invention has the advantages that：
1, the B weight percent in solid core welding wire of the present invention is 0.001~0.003, and 30 >=Ti/B >=10, Ti can will consolidate
The N being dissolved in weld seam is captured completely, forms TiN compounds, is ensured that B element is effectively solid-solution in weld seam, is improved the intensity of weld seam.
When Ti/B ＜ 10, part B will form BN compounds, weaken the quenching degree effect of B, unfavorable to the intensity for improving weld seam.Ti/B>
When 30, Ti promotes B in a large amount of NONEQUILIBRIUM SEGREGATIONs of austenite grain boundary, is easy to form brittle " boron phase ", reduces the effective solid of B
Steel can be made to become fragile while solubility.And it adds and is added in the form of alloy block and additive, cost can be reduced.
2, after solid core welding wire of the invention welding, appearance of weld is beautiful, splashes small, crack sensitivity is low, with Q460E steel plates
Deposited metal mechanical property test is carried out, deposited metal tensile strength is more than 670MPa, and yield strength is more than 560MPa, rate elongation
Mean value is 24%, and -20 DEG C of impact absorbing energy mean values are 125J, minimum 105J.Compared with the original patent welding wire of our company
(CN101905393A carries out deposited metal mechanical property test with Q460E steel plates, and deposited metal tensile strength is more than 600MPa,
Yield strength is more than 500MPa, and rate elongation mean value is 24%, and -20 DEG C of impact absorbing energy mean values are 93J, minimum 84J),
Under identical rate elongation, the yield strength of more former welding wire improves 12%, and tensile strength improves 11.7%, -20 DEG C of ballistic works
Improve 34.4%, welding wire of the invention is stronger to the applicability of steel, when welding point uses at low temperature it is relatively reliable and
Stablize.
Specific implementation mode
With reference to specific embodiment, the present invention will be further described.
Using 10 tons of experiment electric furnaces, low S, P, low As molten iron, S contents is selected to be less than 400ppm, P content is less than
500ppm, As content be less than 150ppm, wherein in steelmaking process by be added 20Kg the additive containing Al, Si, Ca ingredient into
Row deoxidation, desulfurization and dephosphorization are added Al-Ti-B alloy block 1Kg and are further processed molten metal, adjust when oxygen content is less than 100ppm
Whole alloying component, then in vacuum refining processing procedure plus titanium additives fine tuning alloying component and steel-making be protected from air into
Enter in molten steel, ensures that As contents are less than 80ppm in steel ingot in this way, O content is less than 40ppm, and N element is less than 60ppm, and ensures
Alloying component.Steel ingot is rolled into steel wire for welding again, the welding wire of Φ 1.2mm is made by drawing, copper facing, winding process.
Table 1 gives the chemical composition (by weight percentage) for the welding wire for smelting the production of 6 stove welding wire wire rod steels.
Using above-mentioned Φ 1.2mm welding wires, mixed gas (80%Ar+15%CO is used2+ 5%O2) protection, with Q460E steel plates
Deposited metal mechanical property test is carried out, deposited metal specific chemical composition is as shown in table 2, and welding conditions are：Welding current 260
~290A, 27~31V of weldingvoltage, 33 ± 1.5cm/min of speed of welding, gas flow 20L/s, weld heat input control exist
15kJ/cm~20kJ/cm, temperature controls 150 ± 15 DEG C between road.Deposited metal tensile strength is more than 670MPa, and yield strength is big
In 560MPa, rate elongation mean value is 24%, and -20 DEG C of impact absorbing energy mean values are 125J, minimum 105J, are broken in base material
It splits, has reached design requirement, each specific deposited metal performance of welding wire is as shown in table 3.
The component (weight percent) of 1 solid core welding wire of the present invention of table
The chemical composition (weight percent) of 2 deposited metal of table
The performance of 3 deposited metal of table
The above embodiments are only the preferred technical solution of the present invention, and are not construed as the limitation for the present invention, this Shen
Please in embodiment and embodiment in feature in the absence of conflict, mutually can arbitrarily combine.The protection model of the present invention
Enclose the equivalent replacement side of technical characteristic in the technical solution that should be recorded with claim, including the technical solution of claim record
Case is protection domain.Equivalent replacement i.e. within this range is improved, also within protection scope of the present invention.
Claims (5)
1. a kind of solid core welding wire, which is characterized in that the component of the solid core welding wire includes C by weight percentage：0.06~
0.12, Mn：1.35 ~ 2.0, Si：0.65 ~ 1.05, Re：0.01 ~ 0.05, B：0.001 ~ 0.003, Ti：0.015 ~ 0.035, Ni：
0.05 ~ 0.15, Cr：0.05 ~ 0.2, Cu：0.15 ~ 0.5, P：≤ 0.015, S：≤ 0.015, surplus be Fe and inevitably it is miscellaneous
Matter.
2. solid core welding wire according to claim 1, it is characterised in that：The component of the solid core welding wire is by weight percentage
Including C：0.08, Mn：2.0, Si：0.7, Re：0.03, B：0.002, Ti：0.03, Ni：0.1, Cr：0.15, Cu：0.25, P：
0.005, S：0.005, surplus is Fe and inevitable impurity.
3. solid core welding wire according to claim 1 or 2, it is characterised in that：The Re is rare earth element composition, as
The weight ratio of the mixture of neodymium, praseodymium, cerium, the rare earth element of addition is neodymium：Praseodymium：Cerium=1：1：2~3.
4. solid core welding wire according to claim 3, it is characterised in that：Neodymium in the rare earth element：Praseodymium：The weight ratio of cerium is
1：1：2.5.
5. solid core welding wire according to claim 1, it is characterised in that：In the chemical composition of the solder wire material composition, 30
≥Ti / B≥10。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810241874.4A CN108500509A (en) | 2018-03-22 | 2018-03-22 | Solid core welding wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810241874.4A CN108500509A (en) | 2018-03-22 | 2018-03-22 | Solid core welding wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108500509A true CN108500509A (en) | 2018-09-07 |
Family
ID=63378143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810241874.4A Pending CN108500509A (en) | 2018-03-22 | 2018-03-22 | Solid core welding wire |
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| Country | Link |
|---|---|
| CN (1) | CN108500509A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116079278A (en) * | 2023-04-06 | 2023-05-09 | 中国科学院合肥物质科学研究院 | High-energy-absorption high-manganese steel solid welding wire and welding process thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007313558A (en) * | 2005-06-15 | 2007-12-06 | Kobe Steel Ltd | Solid wire for gas-shielded arc welding |
| CN101905393A (en) * | 2010-08-26 | 2010-12-08 | 宜昌猴王焊丝有限公司 | Solid welding wire for high-toughness structural steel |
| CN101905392A (en) * | 2010-08-26 | 2010-12-08 | 宜昌猴王焊丝有限公司 | High-toughness low-alloy solid welding wire |
| CN102601543A (en) * | 2012-04-09 | 2012-07-25 | 天津大桥焊丝有限公司 | Low-carbon submerged arc welding wire |
| CN103878500A (en) * | 2012-12-21 | 2014-06-25 | 鞍钢股份有限公司 | Submerged-arc welding solid wire excellent in low-temperature roughness for high heat input welding |
| CN105414799A (en) * | 2015-12-23 | 2016-03-23 | 宜昌猴王焊丝有限公司 | Solid cored welding wire of low-alloy and high-strength steel and application of solid cored welding wire |
| CN107414341A (en) * | 2017-07-29 | 2017-12-01 | 安徽华众焊业有限公司 | A kind of small solid welding wire that splashes |
-
2018
- 2018-03-22 CN CN201810241874.4A patent/CN108500509A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007313558A (en) * | 2005-06-15 | 2007-12-06 | Kobe Steel Ltd | Solid wire for gas-shielded arc welding |
| CN101905393A (en) * | 2010-08-26 | 2010-12-08 | 宜昌猴王焊丝有限公司 | Solid welding wire for high-toughness structural steel |
| CN101905392A (en) * | 2010-08-26 | 2010-12-08 | 宜昌猴王焊丝有限公司 | High-toughness low-alloy solid welding wire |
| CN102601543A (en) * | 2012-04-09 | 2012-07-25 | 天津大桥焊丝有限公司 | Low-carbon submerged arc welding wire |
| CN103878500A (en) * | 2012-12-21 | 2014-06-25 | 鞍钢股份有限公司 | Submerged-arc welding solid wire excellent in low-temperature roughness for high heat input welding |
| CN105414799A (en) * | 2015-12-23 | 2016-03-23 | 宜昌猴王焊丝有限公司 | Solid cored welding wire of low-alloy and high-strength steel and application of solid cored welding wire |
| CN107414341A (en) * | 2017-07-29 | 2017-12-01 | 安徽华众焊业有限公司 | A kind of small solid welding wire that splashes |
Non-Patent Citations (2)
| Title |
|---|
| 候锡瑞等: "《电站锅炉压力容器压力管道安全技术》", 31 July 2005, 中国电力出版社 * |
| 邹增大等: "《焊接材料、工艺及设备手册》", 31 January 2011, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116079278A (en) * | 2023-04-06 | 2023-05-09 | 中国科学院合肥物质科学研究院 | High-energy-absorption high-manganese steel solid welding wire and welding process thereof |
| CN116079278B (en) * | 2023-04-06 | 2023-12-08 | 中国科学院合肥物质科学研究院 | High-energy-absorption high-manganese steel solid welding wire and welding process thereof |
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Application publication date: 20180907 |