CN113441871B - Flux-cored wire suitable for laser-electric arc hybrid welding - Google Patents
Flux-cored wire suitable for laser-electric arc hybrid welding Download PDFInfo
- Publication number
- CN113441871B CN113441871B CN202110608130.3A CN202110608130A CN113441871B CN 113441871 B CN113441871 B CN 113441871B CN 202110608130 A CN202110608130 A CN 202110608130A CN 113441871 B CN113441871 B CN 113441871B
- Authority
- CN
- China
- Prior art keywords
- percent
- equal
- less
- flux
- weight
- 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
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
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention belongs to the technical field of welding, and particularly relates to a flux-cored wire suitable for laser-arc hybrid welding, which comprises a flux core and a low-carbon steel strip coated on the outer side of the flux core, wherein the flux core accounts for 13-15% of the total weight of the wire; the medicine core comprises the following components in percentage by weight: 4-9% of electrolytic manganese metal, 10-16% of silicon-manganese alloy, 2-8% of micro ferroboron, 3-10% of aluminum-magnesium alloy, 5-13% of rutile, 9-20% of titanium dioxide, 1-2% of sodium fluosilicate, 5-15% of quartz, 5-8% of zircon sand, 2-5% of ferrotitanium, 1-9% of bauxite, 4-10% of sodium potassium titanate, 1-1.5% of bismuth oxide, 2-4% of rare earth ferrosilicon, 1-1.5% of rare earth fluoride, 1-3% of lithium carbonate, and iron powder: and (4) the balance. The flux-cored wire can be used for laser-arc hybrid welding, and is good in technological performance and suitable for laser-arc hybrid welding.
Description
Technical Field
The invention belongs to the technical field of welding, and particularly relates to a flux-cored wire suitable for laser-arc hybrid welding.
Background
The prior art and the defects are as follows:
flux-cored wires are widely used in various fields because of their high productivity. The solid welding wire has the defects of low production efficiency, low welding speed, incapability of realizing all-position welding with high welding current, long operation time of cleaning and polishing after welding, high post-welding treatment cost, limited adaptability to steel, incapability of adjusting components at any time, limitation of material drawing performance on the size of the welding material, general operation processability and the like compared with a flux-cored welding wire.
The difficulty is that the welding speed of the laser-electric arc hybrid welding is far higher than that of the conventional electric arc welding, and the flux-cored wire is different from the flux-cored wire for electric arc welding and needs to provide the flux-cored wire which has better technological properties and is suitable for the laser-electric arc hybrid welding.
The difficulty and significance for solving the technical problems are as follows:
therefore, in view of these problems, it is of great practical significance to provide a flux-cored wire capable of laser-arc hybrid welding.
Disclosure of Invention
The invention aims to provide the flux-cored wire which can perform laser-arc hybrid welding and has better process performance and is suitable for the laser-arc hybrid welding, aiming at solving the technical problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems in the prior art is as follows:
the flux-cored wire suitable for laser-arc hybrid welding comprises a flux core and a low-carbon steel strip coated on the outer side of the flux core, wherein the flux core accounts for 13-15% of the total weight of the wire; the medicine core comprises the following components in percentage by weight: 4-9% of electrolytic manganese metal, 10-16% of silicon-manganese alloy, 2-8% of micro ferroboron, 3-10% of aluminum-magnesium alloy, 5-13% of rutile, 9-20% of titanium dioxide, 1-2% of sodium fluosilicate, 5-15% of quartz, 5-8% of zircon sand, 2-5% of ferrotitanium, 1-9% of bauxite, 4-10% of sodium potassium titanate, 1-1.5% of bismuth oxide, 2-4% of rare earth ferrosilicon alloy, 1-1.5% of rare earth fluoride, 1-3% of lithium carbonate and iron powder: and the balance.
The laser-arc hybrid welding flux-cored wire can perform laser-arc hybrid welding and has good process performance.
The invention can also adopt the following technical scheme:
in the flux-cored wire suitable for laser-arc hybrid welding, further, the electrolytic manganese metal comprises the following chemical components in percentage by weight: more than or equal to 99.7 percent of Mn, less than or equal to 0.03 percent of C, less than or equal to 0.021 percent of S and less than or equal to 0.003 percent of P.
In the flux-cored wire suitable for laser-arc hybrid welding, further, the silicon-manganese alloy comprises the following chemical components in percentage by weight: mn is more than or equal to 60 percent and less than or equal to 67 percent, si is more than or equal to 17 percent and less than or equal to 20 percent, C is less than or equal to 1.8 percent, S is less than or equal to 0.04 percent, and P is less than or equal to 0.15 percent.
In the flux-cored wire suitable for laser-arc hybrid welding, further, the micro ferroboron comprises the following chemical components in percentage by weight: si is more than or equal to 0.9 percent and less than or equal to 1.1 percent, si is less than or equal to 0.054 percent, al is less than or equal to 0.021 percent, C is less than or equal to 0.034 percent, S is less than or equal to 0.007 percent, and P is less than or equal to 0.004 percent.
In the flux-cored wire suitable for laser-arc hybrid welding, further, the titanium dioxide comprises the following chemical components in percentage by weight: tiO 2 2 ≥95％。
In the flux-cored wire suitable for laser-arc hybrid welding, further, the sodium potassium titanate comprises the following chemical components in percentage by weight: tiO 2 2 ≥70％，K 2 O+Na 2 O≥20％，S≤0.05％，P≤0.005％。
In the flux-cored wire suitable for laser-arc hybrid welding, further, the rare earth silicon-iron alloy comprises the following chemical components in percentage by weight: RE is more than or equal to 20 percent and less than or equal to 30 percent, si is less than or equal to 44 percent, and Mn is less than or equal to 3 percent.
In the flux-cored wire suitable for laser-arc hybrid welding, further, the rare earth fluoride comprises the following chemical components in percentage by weight: the content of sigma-delta R2O3 is more than or equal to 83 percent, and the content of F is more than or equal to 26 percent.
In the flux-cored wire suitable for laser-arc hybrid welding, further, the aluminum magnesium alloy comprises the following chemical components in percentage by weight: more than or equal to 97.5 percent of Mg and Al, more than or equal to 47 percent and less than or equal to 53 percent of Al, and more than or equal to 47 percent of Mg.
In the flux-cored wire suitable for laser-arc hybrid welding, further, the sodium fluosilicate comprises the following chemical components in percentage by weight: na (Na) 2 SiF 6 ≥95％。
In the flux-cored wire suitable for laser-arc hybrid welding, further, the iron powder comprises the following chemical components in percentage by weight: more than or equal to 98.0 percent of Fe, less than or equal to 0.4 percent of Mn, less than or equal to 0.15 percent of Si, less than or equal to 0.05 percent of C, less than or equal to 0.020 percent of S, and less than or equal to 0.020 percent of P.
As mentioned above in connection withIn the flux-cored wire for laser-arc hybrid welding, further, the rutile comprises the following chemical components in percentage by weight: tiO 2 2 ≥95％，C≤0.03％，S≤0.02％，P≤0.03％。。
In the flux-cored wire suitable for laser-arc hybrid welding, further, the quartz comprises the following chemical components in percentage by weight: siO 2 2 ≥95％，Fe 2 O 3 ≤0.5％，S≤0.04％，P≤0.04％。
In the flux-cored wire suitable for laser-arc hybrid welding, further, the zircon sand comprises the following chemical components in percentage by weight: zrO (ZrO) 2 ≥60％，SiO 2 ≥25.0％，C≤0.1％，S≤0.05％，P≤0.05％。
In the flux-cored wire suitable for laser-arc hybrid welding, further, the ferrotitanium comprises the following chemical components in percentage by weight: tiO 2 2 ≥50％，Fe 2 O 3 +FeO≈50，S≤0.03％，P≤0.03％。
In the flux-cored wire suitable for laser-arc hybrid welding, the bauxite further comprises the following chemical components in percentage by weight: al (aluminum) 2 O 3 ≥80％，Fe 2 O 3 ≤3.0％，SiO 2 ≤12％，S≤0.05％，P≤0.05％。
In the above flux-cored wire suitable for laser-arc hybrid welding, further, the bismuth oxide comprises the following chemical components in percentage by weight: bi 2 O 3 ≥99.90％。
In the above flux-cored wire suitable for laser-arc hybrid welding, further, the lithium carbonate comprises the following chemical components in percentage by weight: liCO 3 ≥99.2％，Na≤0.08％。
In the flux-cored wire suitable for laser-arc hybrid welding described above, further, the diameter of the wire is Φ 1.2mm.
In conclusion, the invention has the following advantages and positive effects:
1. the invention relates to a medicine suitable for laser-electric arc hybrid weldingCore wire suitable for CO 2 The welding is carried out under the protection of gas, the laser-electric arc composite welding can be carried out, and the process performance is good.
2. The flux-cored wire suitable for laser-arc hybrid welding is convenient and simple to operate, can realize laser-arc hybrid welding, has good technological performance, less splashing, better slag removal and good bright forming of the surface of a welding line, and is suitable for welding under the protection of carbon dioxide gas.
3. The flux-cored wire suitable for laser-arc hybrid welding has high welding strength, the strength is 550KG grade, the low-temperature impact toughness is good and can reach 84J (-20 ℃) at most, and the flux-cored wire has good performance.
Detailed Description
Examples 1 to 5:
the flux-cored wire suitable for laser-arc hybrid welding comprises a flux core and a low-carbon steel strip coated on the outer side of the flux core, wherein the flux core accounts for 13-15% of the total weight of the wire; the medicine core comprises the following components in percentage by weight:
the electrolytic manganese metal comprises the following chemical components in percentage by weight: more than or equal to 99.7 percent of Mn, less than or equal to 0.03 percent of C, less than or equal to 0.021 percent of S, less than or equal to 0.003 percent of P, wherein the silicon-manganese alloy comprises the following chemical components in percentage by weight: mn is more than or equal to 60% and less than or equal to 67%, si is more than or equal to 17% and less than or equal to 20%, C is less than or equal to 1.8%, S is less than or equal to 0.04%, P is less than or equal to 0.15%, and the micro ferroboron comprises the following chemical components in percentage by weight: si is more than or equal to 0.9% and less than or equal to 1.1%, si is less than or equal to 0.054%, al is less than or equal to 0.021%, C is less than or equal to 0.034%, S is less than or equal to 0.007%, P is less than or equal to 0.004%, and the iron powder comprises the following chemical components in percentage by weight: more than or equal to 98.0 percent of Fe, less than or equal to 0.4 percent of Mn, less than or equal to 0.15 percent of Si, less than or equal to 0.05 percent of C, less than or equal to 0.020 percent of S, less than or equal to 0.020 percent of P, and the aluminum-magnesium alloy comprises the following chemical components in percentage by weight: more than or equal to 97.5 percent of Mg and Al and more than or equal to 47 percentAl is less than or equal to 53 percent, mg is more than or equal to 47 percent, and the rutile comprises the following chemical components in percentage by weight: tiO 2 2 More than or equal to 95 percent, less than or equal to 0.03 percent of C, less than or equal to 0.02 percent of S, less than or equal to 0.03 percent of P, and the titanium dioxide comprises the following chemical components in percentage by weight: tiO 2 2 The sodium fluosilicate is more than or equal to 95 percent, and the sodium fluosilicate comprises the following chemical components in percentage by weight: na (Na) 2 SiF 6 The weight percentage of each chemical component in the quartz is more than or equal to 95 percent: siO 2 2 ≥95％，Fe 2 O 3 Less than or equal to 0.5 percent, less than or equal to 0.04 percent of S, less than or equal to 0.04 percent of P, and the zircon sand comprises the following chemical components in percentage by weight: zrO (zirconium oxide) 2 ≥60％，SiO 2 Not less than 25.0 percent, not more than 0.1 percent of C, not more than 0.05 percent of S, not more than 0.05 percent of P, and the weight percentages of the chemical components in the ferrotitanium are as follows: tiO 2 2 ≥50％，Fe 2 O 3 The content of FeO is approximately equal to 50, S is less than or equal to 0.03%, P is less than or equal to 0.03%, and the bauxite comprises the following chemical components in percentage by weight: al (Al) 2 O 3 ≥80％，Fe 2 O 3 ≤3.0％，SiO 2 Not more than 12 percent, not more than 0.05 percent of S, not more than 0.05 percent of P, and the potassium sodium titanate comprises the following chemical components in percentage by weight: tiO 2 2 ≥70％，K 2 O+Na 2 More than or equal to 20 percent of O, less than or equal to 0.05 percent of S, less than or equal to 0.005 percent of P, wherein the bismuth oxide comprises the following chemical components in percentage by weight: bi 2 O 3 More than or equal to 99.90 percent, and the rare earth silicon-iron alloy comprises the following chemical components in percentage by weight: RE is more than or equal to 20% and less than or equal to 30%, si is less than or equal to 44%, mn is less than or equal to 3%, and the rare earth fluoride comprises the following chemical components in percentage by weight: the weight percentage of the sigma R2O3 is more than or equal to 83 percent, the weight percentage of F is more than or equal to 26 percent, and the weight percentage of each chemical component in the lithium carbonate is as follows: liCO 3 ≥99.2％，Na≤0.08％。
The diameter of the welding wire is phi 1.2mm.
And (3) testing:
the flux-cored wires suitable for laser-arc hybrid welding prepared in examples 1-5 were randomly selected in CO 2 Gas (CO) 2 The gas purity is: not less than 99.98 percent), the welding voltage is 22-30V, the current is 180-300A, the welding speed is 800-1500 mm/min, the gas flow is 20-25L/min, the welding process performance (welding seam forming, arc stability, welding seam slag detachability, welding spatter rate and the like) of the flux-cored wire is evaluated, and the welding process performance is evaluated through the steps ofThe test shows that the arc stability is good, the welding seam quality is high, the slag removal performance is good, the splashing is less, the vertical welding process performance is good, and the evaluation result is shown in table 1.
TABLE 1 welding Property evaluation Table
The flux-cored wire for laser-arc hybrid welding structural steel of examples 1 to 5 was further subjected to a test for various mechanical properties. The specific experimental method comprises the following steps: a deposited metal mechanical property test piece is prepared according to GB/T25774.1, wherein the type of the test piece is 1.3, and the width of a test plate is not less than 125mm. The deposited metal tensile test is carried out according to GB/T2652, and the V-notch impact test is carried out according to GB/T2650. Specific experimental data are shown in table 2.
TABLE 2 Properties of deposited metals after welding with the wires prepared in examples 1 to 5
The welding strength is high, the strength is 550KG grade, the low-temperature impact toughness is good, the highest impact toughness can reach 84J at (-20 ℃) and the welding performance is good.
Compared with other embodiments, in the embodiment 1, because the electrolytic manganese metal and the silicon-manganese alloy are added more, and the content of the micro ferroboron is higher, the low-temperature impact toughness can be obviously improved when B, si, mn and the like are added simultaneously, so that the impact is still higher under the condition of improving the strength; compared with other embodiments, the embodiment 2 has the advantages that the electric arc stability is very good due to the fact that the rutile, the titanium dioxide and the sodium potassium titanate are added more; compared with other embodiments, in the rutile type slag system, the melting point and viscosity of molten slag can be adjusted while slag is formed by adding more silicate minerals such as quartz, zircon sand and the like, so that the molten slag is covered very well; compared with other embodiments, the embodiment 4 has the advantages that the rare earth ferrosilicon alloy and the rare earth fluoride are added more and are combined with low-melting-point substances such as S and the like, so that the elongation of the weld metal is effectively improved, the high-toughness performance is kept, and the elongation and the toughness are very good; example 5 has very good slag removability compared to other examples due to the addition of a larger amount of bismuth oxide.
Wherein, the effect of each component in the invention is as follows:
electrolyzing metal manganese: is a deoxidizer, and can be used for transferring manganese element into weld metal and simultaneously has the solid solution strengthening effect. In the welding process, part of manganese is combined with oxygen and enters a welding line in the form of oxides, the alkalinity of slag is improved, and the welding line metal is deoxidized and desulfurized; part of manganese is dissolved in weld metal in a solid solution mode in the form of alloy elements, and the strength is increased. In addition, the quantity of acicular ferrite is increased, the quantity of proeutectoid ferrite and lamellar components is correspondingly reduced, the microscopic structures of the acicular ferrite and the coarse crystal area of the welding seam are refined, and the impact toughness of the welding seam is improved. In addition, the production of weld cracks can be reduced, and the fluidity of the molten iron can be adjusted. Too low manganese content can reduce the metal strength of the welding seam, and too high manganese oxide is generated to increase the surface tension and influence the spreading of the welding seam, and meanwhile, too high welding seam strength and low-temperature impact toughness are reduced. Therefore, the electrolytic manganese metal accounts for 4-9% of the total weight of the powder.
Silicon-manganese alloy: deoxidizer can reduce the oxygen content of weld metal. And alloying the weld joint to ensure that the yield strength and the tensile strength of the weld joint meet the requirements of corresponding indexes. When the addition amount is too small, deoxidation becomes poor, and impact toughness becomes poor; if the amount of the additive is too high, the strength is too high and the impact toughness is lowered. (the metal manganese and the silicon-manganese alloy have the functions of desulfurization and deoxidation, and when the proportion of silicon and manganese in the deposited metal reaches a certain range, the impact toughness and the elongation percentage of weld metal can be effectively improved.) therefore, the silicon-manganese alloy accounts for 10-16% of the total weight of the powder of the explosive core.
W100B micro ferroboron: b refines crystal grains, reduces the crystal boundary energy, inhibits proeutectoid ferrite nucleation, promotes acicular ferrite formation, can improve low-temperature impact toughness, and can obviously improve the low-temperature impact toughness when being added with C, si, mn and Ti. When the ratio of Ti to B is between 5 and 20, the effect of improving the impact toughness is more remarkable. In addition, excessive boron content in the weld metal tends to cause thermal cracking. Therefore, the micro ferroboron accounts for 2-8% of the total weight of the medicine core powder.
Aluminum magnesium alloy: the main components are Al and Mg, the Al and Mg are used as strong deoxidizers to reduce the oxygen nitrogen content of deposited metal and improve the mechanical property of weld metal, the deoxidation product can adjust the manufacturability of a welding wire, the magnesium deoxidation product almost completely enters molten slag, the melting point of the slag can be improved to improve the adaptability of a welding position, and on the other hand, the aluminum-magnesium alloy also has a certain effect on the stability of electric arc. Too high Al will significantly reduce the plasticity and toughness of the weld. Therefore, the adding amount of the aluminum magnesium alloy is controlled to be 3% -10%.
Iron powder: the iron powder is added into the flux core, so that welding deposition efficiency can be improved, electric arc is stabilized, splashing is reduced, and in order to ensure high deposition efficiency, the iron powder is mainly from reduced iron powder or atomized iron powder. The main function is to adjust the loose packing ratio of the medicinal powder so as to keep the proper filling rate of the medicinal powder. An excessive amount of iron powder added may generate a large amount of fumes.
Rutile and titanium dioxide: within the scope of the invention, the invention can well play the roles of slagging, improving slag coverage and slag detachability and stabilizing electric arc. Its main component TiO 2 High solidification temperature of slag, tiO 2 Has the functions of regulating the solidification speed of the slag, changing the slag into short slag, improving the adaptability of a welding position and improving the adaptability of TiO in rutile 2 The Ti can be transited into a molten pool in the welding process, so that the crystallization of the molten pool is improved, and the risk of generating crystallization cracks is reduced. If the addition amount is too much, the slag is sticky, the slag fluidity is poor, the slag is not easy to remove, the forming is not attractive, and the mechanical property is adversely affected; if the addition amount is too small, the effects of slagging and arc stabilization cannot be achieved, the slag coverage is incomplete, and the technological performance of the welding material is affected.
Sodium fluorosilicate: as a slagging agent, the slag removing performance is further improved, the fluidity of a slag coating is enhanced, the surface forming of the slag coating is improved, the corrosion resistance is enhanced, and the content of weld joint H can be effectively reduced. Therefore, the adding amount of the sodium fluosilicate is controlled to be 1-2%.
Silicate mineral: the silicate mineral in the range of the invention is added into the rutile type slag system, the melting point and viscosity of the slag can be adjusted while slagging is carried out, the fluidity of the slag is improved, the surface tension of the slag is reduced, the technological performance of the flux-cored welding wire is improved, and if the adding amount is too much, electric arc is soft and not concentrated; if the addition amount is too small, the effects of slagging and arc stabilization are not achieved. According to the invention, the silicate mineral is quartz or zircon sand.
The main component of quartz is SiO 2 The method mainly has the functions of adjusting the fluidity of the liquid slag pool, providing proper viscosity for the slag, being beneficial to forming and ensuring good coverage of welding slag by proper amount of quartz. As quartz belongs to acidic oxides, the quartz in the powder is too much to float out easily, welding seams are not well spread, the residual height is large, slag inclusion is easily formed in the welding seams, oxygen is added to the welding seams, and the low-temperature toughness is poor. The addition amount is too small, and incomplete slag coverage is easy to occur. Therefore, the weight percentage of quartz in the formula to the total weight of the powder core is preferably 5-15%.
The zircon sand mainly contains ZrO 2 And SiO 2 Firstly, the quartz has the function of quartz; in addition, zrO 2 As a high-melting-point oxide, the high-melting-point oxide can improve the melting point of welding slag, can quickly solidify the welding slag during vertical welding, prevents molten iron from falling, and obtains a well-formed welding line. In addition, the volume changes in the slag cooling process, so that the slag shell can be smoothly separated from the weld metal. The zircon sand content is high, and acidic oxides are introduced into the welding seam, so that the low-temperature toughness is not facilitated. Therefore, the zircon sand in the formula accounts for 5 to 8 percent of the total weight of the powder of the medicine core, and is proper.
Titanium iron: a certain amount of ferrotitanium is added into the flux core to play a role in deoxidation and reduce the oxygen content of weld metal. Therefore, the addition amount of ferrotitanium is preferably controlled to be 2-5%.
Bauxite: belongs to a slag former and is used for adjusting the melting point, viscosity, fluidity and surface tension of slag, and improving the manufacturability of welding wires and the formation of welding seams. The main component is Al 2 O 3 As a neutral oxide, it does not easily float upward in molten iron, so its contentIf too high, slag inclusions are easily formed in the weld and the weld metal becomes brittle. Therefore, the percentage of the total weight of the medicine core powder is preferably 1 to 9 percent.
Sodium potassium titanate: stabilize the arc and improve spreading. Therefore, the percentage of the total weight of the medicine core powder is preferably 4 to 10 percent.
Bismuth oxide: as the surface active material, the slag removability is improved, but when the amount is too large, low melting point inclusions are formed, and the weld quality is deteriorated, and the amount to be added is preferably controlled to 1 to 1.5%.
Rare earth silicon iron alloy: on one hand, the silicon and the manganese are jointly deoxidized, and the proper Mn/Si can well fix oxygen elements in the welding seam, generate oxide particles to enter slag, and purify welding seam metal; and the other side is siliconized in the weld metal, so that the corrosion resistance of the stainless steel is improved. The rare earth elements can be combined with low-melting-point substances such as S and the like, the segregation of the low-melting-point substances during the solidification of deposited metal is reduced, the hot crack tendency is reduced, the grain refining effect on the weld metal can be achieved, the elongation of the weld metal is effectively improved, and the high-strength and high-toughness performance is kept. Therefore, the percentage of the total weight of the medicine core powder is preferably 2 to 4 percent.
Rare earth fluoride: the rare earth element can be combined with low melting point substances such as S, the segregation of the low melting point substances is reduced when the deposited metal is solidified, and the thermal cracking tendency is reduced. In addition, the alloy has the effect of refining grains so as to improve the impact toughness, but the addition amount is too high, so that the dripping transition is slow, and the welding manufacturability is influenced. Fluorine can reduce the content of diffusible hydrogen in deposited metal, purify welding seams, reduce air hole sensitivity, improve low-temperature impact toughness of welding seams and adjust the crack resistance of the welding seams. However, the content of fluoride is too high, which causes unstable electric arc, large splashing and bad electric arc sound during welding, and the best effect can be achieved by controlling the content within 1-1.5 percent of the range of the invention.
Lithium carbonate: the stability of the reinforced electric arc is also a regulator of the viscosity and the melting point of the welding slag. Decomposed into oxides and carbon dioxide, which acts as a protection for the welding process. Therefore, the weight percentage of the powder in the medicine core is 1 to 3 percent.
In conclusion, the flux-cored wire can perform laser-arc hybrid welding, has good technological properties, and is suitable for laser-arc hybrid welding.
The present invention has been described in detail with reference to the above examples, but the description is only for the preferred examples of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (9)
1. A flux-cored wire suitable for laser-arc hybrid welding is characterized in that: the flux-cored wire suitable for laser-arc hybrid welding comprises a flux core and a low-carbon steel strip coated on the outer side of the flux core, wherein the flux core accounts for 13-15% of the total weight of the wire; the medicine core comprises the following components in percentage by weight: 4-9% of electrolytic manganese metal, 10-16% of silicon-manganese alloy, 2-8% of micro ferroboron, 3-10% of aluminum-magnesium alloy, 5-13% of rutile, 9-20% of titanium dioxide, 1-2% of sodium fluosilicate, 5-15% of quartz, 5-8% of zircon sand, 2-5% of ferrotitanium, 1-9% of bauxite, 4-10% of sodium potassium titanate, 1-1.5% of bismuth oxide, 2-4% of rare earth ferrosilicon, 1-1.5% of rare earth fluoride, 1-3% of lithium carbonate, and iron powder: the balance, ti/B is between 5 and 20, and the strengthening elements are Si and Mn.
2. The flux-cored welding wire suitable for laser-arc hybrid welding of claim 1, wherein: the electrolytic manganese metal comprises the following chemical components in percentage by weight: more than or equal to 99.7 percent of Mn, less than or equal to 0.03 percent of C, less than or equal to 0.021 percent of S and less than or equal to 0.003 percent of P.
3. The flux-cored welding wire suitable for laser-arc hybrid welding of claim 1, wherein: the silicon-manganese alloy comprises the following chemical components in percentage by weight: mn is more than or equal to 60 percent and less than or equal to 67 percent, si is more than or equal to 17 percent and less than or equal to 20 percent, C is less than or equal to 1.8 percent, S is less than or equal to 0.04 percent, and P is less than or equal to 0.15 percent.
4. The flux-cored welding wire suitable for laser-arc hybrid welding of claim 1, wherein: the micro ferroboron comprises the following chemical components in percentage by weight: b is more than or equal to 0.9 percent and less than or equal to 1.1 percent, si is less than or equal to 0.054 percent, al is less than or equal to 0.021 percent, C is less than or equal to 0.034 percent, S is less than or equal to 0.007 percent, and P is less than or equal to 0.004 percent.
5. The flux-cored welding wire suitable for laser-arc hybrid welding of claim 1, wherein: the titanium dioxide comprises the following chemical components in percentage by weight: tiO 2 2 ≥95％。
6. The flux-cored welding wire suitable for laser-arc hybrid welding of claim 1, wherein: the weight percentages of chemical components in the sodium potassium titanate are as follows: tiO 2 2 ≥70％，K 2 O+Na 2 O≥20％，S≤0.05％，P≤0.005％。
7. The flux-cored welding wire suitable for laser-arc hybrid welding of claim 1, wherein: the rare earth silicon-iron alloy comprises the following chemical components in percentage by weight: RE is more than or equal to 20 percent and less than or equal to 30 percent, si is less than or equal to 44 percent, and Mn is less than or equal to 3 percent.
8. The flux-cored welding wire suitable for laser-arc hybrid welding of claim 1, wherein: the rare earth fluoride comprises the following chemical components in percentage by weight: the content of sigma-delta R2O3 is more than or equal to 83 percent, and the content of F is more than or equal to 26 percent.
9. The flux-cored welding wire suitable for laser-arc hybrid welding of claim 1, wherein: the aluminum magnesium alloy comprises the following chemical components in percentage by weight: more than or equal to 97.5 percent of Mg + Al, more than or equal to 47 percent and less than or equal to 53 percent of Al, and more than or equal to 47 percent of Mg; the sodium fluosilicate comprises the following chemical components in percentage by weight: na (Na) 2 SiF 6 More than or equal to 95 percent; the iron powder comprises the following chemical components in percentage by weight: more than or equal to 98.0 percent of Fe, less than or equal to 0.4 percent of Mn, less than or equal to 0.15 percent of Si, less than or equal to 0.05 percent of C, less than or equal to 0.020 percent of S, and less than or equal to 0.020 percent of P; the rutile comprises the following chemical components in percentage by weight: tiO 2 2 More than or equal to 95 percent, less than or equal to 0.03 percent of C, less than or equal to 0.02 percent of S and less than or equal to 0.03 percent of P; the quartz comprises the following chemical components in percentage by weight: siO 2 2 ≥95％，Fe 2 O 3 Less than or equal to 0.5 percent, less than or equal to 0.04 percent of S and less than or equal to 0.04 percent of P; what is neededThe zircon sand comprises the following chemical components in percentage by weight: zrO (ZrO) 2 ≥60％，SiO 2 Not less than 25.0 percent, not more than 0.1 percent of C, not more than 0.05 percent of S and not more than 0.05 percent of P; the ferrotitanium comprises the following chemical components in percentage by weight: tiO 2 2 ≥50％，Fe 2 O 3 + FeO is approximately equal to 50, S is less than or equal to 0.03 percent, and P is less than or equal to 0.03 percent; the bauxite comprises the following chemical components in percentage by weight: al (aluminum) 2 O 3 ≥80％，Fe 2 O 3 ≤3.0％，SiO 2 Less than or equal to 12 percent, less than or equal to 0.05 percent of S and less than or equal to 0.05 percent of P; the bismuth oxide comprises the following chemical components in percentage by weight: bi 2 O 3 Not less than 99.90 percent; the lithium carbonate comprises the following chemical components in percentage by weight: liCO 3 More than or equal to 99.2 percent of Na and less than or equal to 0.08 percent of Na; the diameter of the flux-cored wire is phi 1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110608130.3A CN113441871B (en) | 2021-06-01 | 2021-06-01 | Flux-cored wire suitable for laser-electric arc hybrid welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110608130.3A CN113441871B (en) | 2021-06-01 | 2021-06-01 | Flux-cored wire suitable for laser-electric arc hybrid welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113441871A CN113441871A (en) | 2021-09-28 |
| CN113441871B true CN113441871B (en) | 2022-12-20 |
Family
ID=77810583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110608130.3A Active CN113441871B (en) | 2021-06-01 | 2021-06-01 | Flux-cored wire suitable for laser-electric arc hybrid welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113441871B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108723636B (en) * | 2018-04-26 | 2020-06-30 | 洛阳双瑞特种合金材料有限公司 | Welding wire powder with low crack sensitivity, flux-cored wire, preparation and application |
| CN108971802A (en) * | 2018-07-16 | 2018-12-11 | 中国京冶工程技术有限公司 | A kind of flux-cored wire preparation method suitable for robot welding |
| CN110293332B (en) * | 2019-06-03 | 2021-08-06 | 中冶建筑研究总院有限公司 | High-strength weather-proof and fire-resistant steel welding alkaline flux-cored wire |
-
2021
- 2021-06-01 CN CN202110608130.3A patent/CN113441871B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113441871A (en) | 2021-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1846928B (en) | Flux cored electrode and method for forming welding seam with reduced gas trace | |
| CN101450425B (en) | Heat-resisting steel flux-cored wire | |
| CN101658987B (en) | Flux-cored wire | |
| EP1295672A1 (en) | Flux-cored wire for gas shielded arc welding | |
| CN106514055A (en) | Ship steel submerged-arc horizontal welding flux and preparation method thereof | |
| US4843212A (en) | Composition of welding wire | |
| CN104959748A (en) | Flux-cored wire special for maritime work low-temperature high-strength steel | |
| JPS5915756B2 (en) | Flux-cored wire for gas shield arc welding | |
| US11426824B2 (en) | Aluminum-containing welding electrode | |
| CN108015448B (en) | Low-dust and low-toxicity flux-cored wire and using method thereof | |
| JP2000233296A (en) | Metallic core welding wire rod | |
| JPS62173096A (en) | Welding bead and electrode for manufacture thereof | |
| JP3934399B2 (en) | Flux-cored wire for austenitic stainless steel welding that refines solidified crystal grains | |
| CN109128573B (en) | Large-heat-input electro-gas welding gas-shielded flux-cored wire based on grain refinement mechanism | |
| CN113441871B (en) | Flux-cored wire suitable for laser-electric arc hybrid welding | |
| JP3465647B2 (en) | Pulsed CO2 welding steel wire | |
| CN106695155A (en) | Low-hydrogen high toughness acidic flux-cored wire | |
| CN115990728A (en) | 5Y-grade 460MPa high-toughness rutile type seamless flux-cored wire | |
| JP4228490B2 (en) | Pulse CO2 welding method | |
| JP5473371B2 (en) | Coated arc welding rod for duplex stainless steel welding to refine solidified crystal grains | |
| CN114990286A (en) | Method for reducing welding spatter | |
| CN109530962B (en) | Flux-cored wire for high-current vertical upward welding and preparation method and application thereof | |
| JP2582601B2 (en) | Composite wire for self-shielded arc welding | |
| CN109128585B (en) | Large-heat-input electro-gas welding gas-shielded flux-cored wire based on organization homogenization mechanism | |
| JP2020142277A (en) | FLUX-CORED WIRE FOR Ar-CO2 MIXED GAS SHIELD ARC-WELDING OF ATMOSPHERIC CORROSION RESISTANT 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 |