CN115815881A - Flux-cored material for welding of arm frame of intelligent aerial platform operation vehicle, welding wire containing flux-cored material and preparation method of flux-cored material - Google Patents
Flux-cored material for welding of arm frame of intelligent aerial platform operation vehicle, welding wire containing flux-cored material and preparation method of flux-cored material Download PDFInfo
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- CN115815881A CN115815881A CN202211584442.6A CN202211584442A CN115815881A CN 115815881 A CN115815881 A CN 115815881A CN 202211584442 A CN202211584442 A CN 202211584442A CN 115815881 A CN115815881 A CN 115815881A
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- 238000003466 welding Methods 0.000 title claims abstract description 113
- 239000000463 material Substances 0.000 title claims abstract description 72
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims abstract description 50
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims abstract description 42
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 40
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 24
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910000914 Mn alloy Inorganic materials 0.000 claims abstract description 22
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000010453 quartz Substances 0.000 claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000011775 sodium fluoride Substances 0.000 claims abstract description 21
- 235000013024 sodium fluoride Nutrition 0.000 claims abstract description 21
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 21
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- 229910052742 iron Inorganic materials 0.000 claims description 3
- 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 claims description 3
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- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 6
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 6
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- 238000002844 melting Methods 0.000 description 5
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- 239000010936 titanium Substances 0.000 description 4
- 238000005491 wire drawing Methods 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
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- 239000001095 magnesium carbonate Substances 0.000 description 3
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- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 3
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 3
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
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- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
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- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000720 Silicomanganese Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910003077 Ti−O Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- IXQWNVPHFNLUGD-UHFFFAOYSA-N iron titanium Chemical compound [Ti].[Fe] IXQWNVPHFNLUGD-UHFFFAOYSA-N 0.000 description 1
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- Nonmetallic Welding Materials (AREA)
Abstract
The invention provides a flux-cored material for welding an arm support of an intelligent aerial platform operation vehicle, a welding wire containing the flux-cored material and a preparation method of the flux-cored material, wherein the flux-cored material comprises the following raw materials in percentage by mass based on the total mass of the flux-cored material: 35-45% of rutile, 3-7% of quartz, 2-5% of magnesia, 4-5% of sodium fluoride, 10-15% of silicon-manganese alloy, 1-4% of ferrotitanium, 6-8% of nickel powder, 1-3% of copper powder, 3-5% of aluminum-magnesium alloy, 0.3-0.6% of high ferroboron, 1-3% of lithium fluoride and the balance of iron powder. The flux-cored wire comprises a steel strip outer skin and a flux-cored material, wherein the flux-cored material is filled in the steel strip outer skin, and the steel strip outer skin is a low-carbon steel strip. The deposited metal formed by the welding wire prepared by the flux-cored material has excellent mechanical property, higher ductility and toughness and higher bending property.
Description
Technical Field
The invention relates to the technical field of welding wires, in particular to a flux-cored material for welding an arm support of an intelligent aerial platform operation vehicle, a welding wire containing the flux-cored material and a preparation method of the welding wire.
Background
The intelligent high-altitude platform operation vehicle has the advantages of flexibility, large working range, multi-degree-of-freedom telescopic lifting, strong adaptability to environment and the like, and is widely applied to work occasions such as airports, seaports, factory enterprises, railway construction, loading and the like. The intelligent high-altitude platform operation vehicle is indispensable equipment for high-altitude operation, a system of the current high-altitude operation vehicle is generally an automobile chassis, the high-altitude operation vehicle is provided with a travelling mechanism with the same performance as that of automobile running, high-altitude operation can be rapidly carried out after the high-altitude platform operation vehicle is transferred to a working environment, the high-altitude platform operation vehicle is increasingly applied to numerous industries such as equipment maintenance, engineering construction and the like, and the intelligent high-altitude platform operation vehicle is one of the fastest-developing industries in recent years in China.
At present, the types of intelligent aerial platform operation vehicles on the market are more, the requirements on the structural composition, stability and bearing capacity of the intelligent aerial platform operation vehicles are gradually improved, the reliability of a telescopic boom of the intelligent aerial platform operation vehicle mainly depends on the bearing capacity of the boom, higher requirements on the performance of the boom are continuously provided along with the improvement of the intelligent aerial platform operation vehicle towards the targets of large height, large amplitude and light weight, higher requirements on the material of the boom, the welding process and the welding material selection are also provided, and the existing welding materials cannot meet the requirements on boom welding.
Disclosure of Invention
The invention aims to provide a flux-cored material for welding an arm support of an intelligent aerial platform operation vehicle, a welding wire containing the flux-cored material and a preparation method of the flux-cored material.
In order to meet the technical purpose and the related technical purpose, the invention provides a core material for welding an arm support of an intelligent aerial platform operation vehicle, which comprises the following raw materials in percentage by mass based on the total mass of the core material: 35-45% of rutile, 3-7% of quartz, 2-5% of magnesia, 4-5% of sodium fluoride, 10-15% of silicon-manganese alloy, 1-4% of ferrotitanium, 6-8% of nickel powder, 1-3% of copper powder, 3-5% of aluminum-magnesium alloy, 0.3-0.6% of high ferroboron, 1-3% of lithium fluoride and the balance of iron powder.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the addition amount of the rutile is 38-40%.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the quartz is added in an amount of 5-7%.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the addition amount of the magnesia is 3-4%.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the addition amount of the silicon-manganese alloy is 12-15%.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the addition amount of the ferrotitanium is 3-4%.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the addition amount of the aluminum-magnesium alloy is 4-5%.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the addition amount of the high ferroboron is 0.4-0.6%.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the addition amount of the lithium fluoride is 1-2%.
In an example of the chemical core material for welding the boom of the intelligent aerial platform operation vehicle, the particle size of the rutile meets the condition that the particle size passing through a 40-mesh sieve is more than or equal to 99 percent and the particle size passing through a 160-mesh sieve is less than or equal to 30 percent.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the granularity of the silicon-manganese alloy meets that the granularity of powder particles passing through a 40-mesh sieve is more than or equal to 99 percent; the powder particles passing through a 60-mesh sieve are more than or equal to 90 percent, and the powder particles passing through a 160-mesh sieve are less than or equal to 50 percent.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the granularity of the quartz meets the condition that the powder particle passing through a 80-mesh sieve is more than or equal to 95 percent, and the powder particle passing through a 200-mesh sieve is less than or equal to 30 percent.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the granularity of the magnesia meets the condition that the powder particle passing through a 40-mesh sieve is 100%, and the powder particle passing through a 200-mesh sieve is more than or equal to 90%.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the granularity of the ferrotitanium is more than or equal to 99 percent of powder particles passing through a 40-mesh sieve, more than or equal to 90 percent of powder particles passing through a 60-mesh sieve and less than or equal to 50 percent of powder particles passing through a 160-mesh sieve.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the particle size of the nickel powder meets the condition that the powder particles passing through a 60-mesh sieve are 100%, and the powder particles passing through a 120-mesh sieve are less than or equal to 30%.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the granularity of the sodium fluoride meets the condition that the powder particle passing through a 80-mesh sieve is more than or equal to 95 percent, and the powder particle passing through a 200-mesh sieve is less than or equal to 30 percent.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the granularity of the copper powder meets the condition that the powder particles passing through a 80-mesh sieve are 100%.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the granularity of the aluminum-magnesium alloy meets that the granularity of particles passing through a 60-mesh sieve is more than or equal to 95 percent and the granularity of particles passing through a 160-mesh sieve is less than or equal to 30 percent.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the granularity of the high ferroboron is more than or equal to 95% of powder particles passing through a 60-mesh sieve and less than or equal to 30% of powder particles passing through a 160-mesh sieve.
In an example of the core material for welding the boom of the intelligent aerial platform operation vehicle, the granularity of the lithium fluoride meets that the granularity of powder particles passing through a 325-mesh sieve is more than or equal to 95%.
The invention also provides a flux-cored wire for welding the arm support of the intelligent aerial platform operation vehicle, which comprises a steel belt sheath and a flux-cored material, wherein the flux-cored material is filled in the steel belt sheath, the steel belt sheath is a low-carbon steel belt, and the low-carbon steel belt comprises the following components in percentage by mass based on the total mass of the low-carbon steel belt: less than or equal to 0.04 percent of carbon, 0.1 to 0.3 percent of manganese, less than or equal to 0.05 percent of silicon, less than or equal to 0.0250 percent of phosphorus, less than or equal to 0.020 percent of sulfur, and the balance of iron and inevitable impurities.
In the example of the flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle, the filling coefficient of the flux-cored material is 12-18%.
In the example of the flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle, the diameter of the flux-cored wire is 1.2-1.6 mm.
The invention also provides a preparation method of the flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle, which comprises the following preparation steps:
s1, carrying out primary drying on each component of a flux-cored material, adding the flux-cored material subjected to primary drying into a powder mixer, uniformly stirring and mixing, and then carrying out secondary drying on the uniformly mixed flux-cored material to obtain a dry powder mixture of the flux-cored material;
s2, rolling the steel strip into a U-shaped groove;
s3, filling the dry powder mixture of the medicine core material into the U-shaped groove;
and S4, closing the U-shaped groove containing the flux-cored material dry powder mixture, rolling the U-shaped groove into an O shape, and drawing the U-shaped groove to the set diameter of the flux-cored wire.
In step S1, the temperature for performing the first drying on rutile and quartz is 900 to 950 ℃, the drying time is 10 to 12 hours, the temperature for performing the first drying on magnesia, sodium fluoride, silicon-manganese alloy, ferrotitanium, nickel powder, copper powder, aluminum-magnesium alloy, high ferroboron, lithium fluoride and iron powder is 250 to 350 ℃, and the drying time is 10 to 15 hours.
In the first example of the preparation method of the flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle, in the step S1, the temperature for performing the second drying on the uniformly mixed flux-cored material is 100-150 ℃, and the drying time is 1-2 hours.
The flux-cored material of the invention has the following functions:
rutile: the main component is TiO 2 The slag former and the arc stabilizer are main slag formers and arc stabilizers, and are added in proper amount to stabilize welding electric arcs, so that molten metal drops can be transited in a fine mist shape, welding spatters are reduced, the fluidity and the coverage of molten slag are improved, the influence on the stability of the electric arcs, the coverage of the welding slag and the surface quality of welding seams is large, and the full-position welding operation is favorably realized. When the addition amount is too small, the characteristics are not obvious, and when the addition amount is too large, the slag is too much and is not easy to remove, the oxygen content of the welding line is increased, and the mechanical property of the deposited metal is not facilitated.
Quartz: the main component is SiO 2 The surface of the welding seam can be brighter, the color of the slag is darker, the slag is favorably removed from the welding seam, and the low-temperature toughness of the welding seam is influenced.
Magnesia: the main component is MgO, and the MgO is a high-melting-point oxide, so that the melting point and the viscosity of the slag can be improved, the physical and chemical properties of the slag are improved, and the all-position weldability of the welding wire is improved. As the content of MgO increases, the alkalinity of the slag rises, and the low-temperature toughness of the welding seam can be gradually improved.
Sodium fluoride: fluoride ion of sodium fluoride and H 2 And gas such as HF is generated through O reaction, so that diffusible hydrogen in the weld joint is reduced, the melting point of sodium fluoride is lower, the eutectic point of molten slag can be reduced, the viscosity and the surface tension of the molten slag are reduced, the slag detachability of the weld joint and the surface forming of the weld joint are improved, the effects of removing hydrogen from the weld joint and improving the indentation resistance are achieved, and the low-temperature toughness of the weld joint is obviously improved.
Aluminum magnesium alloy: the aluminum-magnesium alloy powder is added into the formula, so that the electric arc spraying is easy to realize, mgO generated by reaction at high temperature enters slag, the alkalinity of the slag is favorably improved, and the low-temperature toughness of weld metal is favorably improved. The aluminum-magnesium alloy can reduce burning loss of Si and Mn elements, so that the contents of Si and Mn in weld metal are increased, and the weld surface is brighter. With the increase of aluminum magnesium alloy, the arc spraying state of the flux-cored wire is obviously improved, and the flux-cored wire has better effects on welding spatter and welding seam formation. The aluminum content in the aluminum-magnesium alloy is 47-53%, and the balance is magnesium.
Nickel powder: the nickel powder is used as an alloying agent, is added into the flux core as a main alloying element, and is changed after Ni is added into a Mn-containing welding seam: the proportion of proeutectoid ferrite in the weld is gradually reduced, while acicular ferrite is gradually increased, and the matching of Ni and Mn must be reasonable, otherwise the weld is seriously embrittled. Ni is an austenite forming element, can reduce the effect of coarsening of ferrite grains due to A1, and has a solid solution strengthening effect, and can improve the strength and low-temperature impact toughness of the weld metal.
Silicon-manganese alloy: the silicomanganese alloy is used as a main deoxidizer, mainly participates in deoxidation, has an alloying effect, is used for reducing the oxygen content of weld metal, increasing the strength and crack resistance of the weld metal and improving the low-temperature impact toughness. The manganese content in the silicon-manganese alloy is 62-67%, and the silicon content is 20-23%.
Copper powder: the method can refine crystal grains in the welding seam, increase the volume fraction of the secondary phase and improve the toughness of the welding seam.
Titanium iron: the main function is to improve the toughness of the weld metal, and has the functions of deoxidation, arc stabilization, promoting the fog-like transition of molten drops and realizing the fine and bright weld formation. But the toughness is beneficial only in a narrow content range, the toughness is reduced when the content is too much, the acicular ferrite can be promoted to form, crystal grains are refined, the grain boundary area is increased, the mechanical property of the material is improved, and the slag-making effect is good. The titanium element can also form stable carbide to avoid separating Cr-rich carbide on the grain boundary, so the addition of the titanium element can also prevent intergranular corrosion, and the Ti and the N can be combined into TiN nucleation particles, thereby reducing the N content of a welding seam and further improving the impact toughness. The titanium content in the ferrotitanium is more than or equal to 70 percent, and the silicon content is less than or equal to 4.5 percent.
High-boron iron: the main transition B element has the functions of refining crystal grains, improving the toughness of weld metal, deoxidizing, stabilizing arc, promoting the fog transition of molten drop and realizing the fine and bright weld formation. The boron content in the high-boron iron is more than or equal to 19 percent, and the carbon content is less than or equal to 0.6 percent.
Lithium fluoride: lithium fluoride has the effect of improving the impact properties and elongation of the weld.
In conclusion, according to the flux-cored material for welding the boom of the intelligent aerial platform operation vehicle, the welding wire containing the flux-cored material and the preparation method thereof, rutile and quartz are adopted to improve the slag detachability, the welding arc can be more stable, the splashing can be reduced, sodium fluoride and lithium fluoride are adopted to dehydrogenate the welding seam, the crack resistance and the pore resistance are improved, the low-temperature toughness and the impact resistance of the welding seam are improved, and magnesia, silicon-manganese alloy, ferrotitanium, nickel powder, copper powder, aluminum-magnesium alloy and high ferroboron are adopted to improve the toughness of the welding seam metal, so that the deposited metal formed by using the flux-cored material is excellent in mechanical property, and has higher ductility, toughness and higher bending property.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.
When numerical ranges are given in the examples, it is understood that both endpoints of each of the numerical ranges and any value therebetween can be selected unless the invention otherwise indicated. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and are intended to be open ended, i.e., to include any methods, devices, and materials similar or equivalent to those described in the examples.
It should be noted that the material components not specifically described in the present invention are selected from conventional materials in the field of welding wire technology and can be obtained commercially in general, and the unpublished conditions are the same in the following examples except for the numerical values explicitly given.
In the following examples, in one example of the flux-cored material of the present invention, the particle size of rutile is 70 to 80 mesh, the particle size of quartz is 70 to 80 mesh, the particle size of magnesite is 80 to 90 mesh, the particle size of sodium fluoride is 200 to 210 mesh, the particle size of silicon-manganese alloy is 70 to 80 mesh, the particle size of ferrotitanium is 70 to 80 mesh, the particle size of nickel powder is 80 to 100 mesh, the particle size of copper powder is 80 to 90 mesh, the particle size of aluminum-magnesium alloy is 70 to 80 mesh, the particle size of high-boron iron is 70 to 80 mesh, the particle size of lithium fluoride is 330 to 340 mesh, and the particle size of iron powder is 70 to 80 mesh.
The invention provides a core material for welding an arm support of an intelligent aerial platform operation vehicle, which comprises the following raw materials in percentage by mass based on the total mass of the core material: 35-45% of rutile, 3-7% of quartz, 2-5% of magnesia, 4-5% of sodium fluoride, 10-15% of silicon-manganese alloy, 1-4% of ferrotitanium, 6-8% of nickel powder, 1-3% of copper powder, 3-5% of aluminum-magnesium alloy, 0.3-0.6% of high ferroboron, 1-3% of lithium fluoride and the balance of iron powder.
The invention also provides a flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle, which comprises a steel belt sheath and a flux-cored material, wherein the flux-cored material is filled in the steel belt sheath, the steel belt sheath is a low-carbon steel belt, and the low-carbon steel belt comprises the following components in percentage by mass based on the total mass of the low-carbon steel belt: less than or equal to 0.04 percent of carbon, 0.1 to 0.3 percent of manganese, less than or equal to 0.05 percent of silicon, less than or equal to 0.0250 percent of phosphorus, less than or equal to 0.020 percent of sulfur, and the balance of iron and inevitable impurities.
In the example of the flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle, the filling coefficient of the flux-cored material is 12-18%.
In the example of the flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle, the diameter of the flux-cored wire is 1.2-1.6 mm.
The invention also provides a preparation method of the flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle, which comprises the following preparation steps:
s1, carrying out primary drying on all components of a flux-cored material, adding the flux-cored material subjected to primary drying into a powder mixer, uniformly stirring and mixing, and carrying out secondary drying on the uniformly-mixed flux-cored material to obtain a flux-cored material dry powder mixture;
s2, rolling the steel strip into a U-shaped groove;
s3, filling the dry powder mixture of the medicine core material into the U-shaped groove;
s4, closing the U-shaped groove containing the flux-cored material dry powder mixture, rolling the U-shaped groove into an O shape, and drawing the U-shaped groove to a set diameter of the flux-cored wire.
In step S1, the temperature for performing the first drying on rutile and quartz is 900 to 950 ℃, the drying time is 10 to 12 hours, the temperature for performing the first drying on magnesia, sodium fluoride, silicon-manganese alloy, ferrotitanium, nickel powder, copper powder, aluminum-magnesium alloy, high ferroboron, lithium fluoride and iron powder is 250 to 350 ℃, and the drying time is 10 to 15 hours.
In the first example of the preparation method of the flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle, in the step S1, the temperature for performing the second drying on the uniformly mixed flux-cored material is 100-150 ℃, and the drying time is 1-2 hours.
The invention can improve the tensile strength and the yield strength of a welding line and the elongation and the low-temperature impact toughness, and the principle is as follows:
the conditions are met by adjusting the proportion of alloy elements, wherein C has multiple strengthening effects such as solid solution strengthening, precipitation strengthening, fine grain strengthening and the like on deposited metal, but when the content of C is too high, a hard and brittle M structure is generated, the low-temperature toughness is seriously deteriorated, and the content of C (C is less than 0.10%) is strictly controlled.
Mn has strong solid solution strengthening and desulfurization effects, and the addition of Mn can reduce the phase transition temperature from a gamma phase to an alpha phase and promote AF (aluminum fluoride) transition, so that the strength and toughness of weld metal can be improved by proper amount of Mn, but the addition amount cannot be too high, otherwise, the toughness is reduced, and the Mn content in the deposited metal is controlled within 1.2 percent.
During welding, the transition of Mn and other alloys can be protected by Si, the residual Si can play a role of solid solution strengthening in alpha-Fe, and the content of Si is controlled within 0.3 percent.
Ni is an austenite stabilizing element, and the addition of 0.3-0.5% of Ni in the weld seam can improve the cold cracking resistance and improve the low-temperature impact toughness, mainly because the Ni element has a toughened matrix, the fracture resistance of ferrite is improved, the toughness of the ferrite matrix can be improved, and the formation of AF is promoted, wherein the structure of deposited metal is changed along with the change of Ni content, when the Ni content is increased, PF and GB are reduced, AF of large-angle grain boundary is increased, the expansion of cracks is hindered, and along with the increase of Ni content, the structure size is thinned, the effect of dividing and refining the structure is achieved, so that the impact toughness is improved. In addition, the Ni element with a certain content can increase the stacking fault energy, reduce the friction resistance and pinning coefficient at low temperature, promote the cross slip of screw dislocation, increase the energy consumption of crack propagation, and further improve the low-temperature toughness of the weld metal.
The increase of the Cu content reduces the austenite transformation temperature, when the Cu content is increased from 0.025% to 0.24%, the PF content is reduced in deposited metal, the AF content is increased, and the increase of the Cu content increases the difference between ferrite free energy and austenite free energy during phase change, reduces the critical crystal blank size, and simultaneously reduces the diffusion speed of carbon, so that the growth speed of a nucleated crystal blank is slowed down, the ferrite is refined, the acicular ferrite is promoted to be formed, and the low-temperature impact toughness is improved.
Trace Ti can effectively improve the strength of a welding seam, and meanwhile Ti and O have strong affinity, and can form a Ti-O compound with a high melting point in the welding seam, thereby effectively promoting AF formation, refining crystal grains, improving the strength and improving the toughness. Trace B is usually added together with Ti, ti is oxidized in the welding process so as to protect the transition of B, B is easier to transition into a welding seam due to the strong deoxidation effect of Al and Mg, the affinity of Al and N is higher than that of B, and B can be partially aggregated in an austenite crystal boundary in the form of interstitial atoms, so that the transformation of a high-temperature structure is prevented, the hardenability is improved, and the low-temperature toughness of deposited metal is improved.
Usually, strong reducing agents such as Al and Mg are added into weld metal to deoxidize and fix nitrogen, but the generated polygonal AlN brittle inclusion can seriously damage the low-temperature toughness and the elongation of the weld metal, so that a proper amount of LiF is added into a flux core to generate Li in an arc region and N 3 N, thereby obviously reducing the content of N in the weld metal and reducing the quantity of AlN harmful impurities, thereby improving the elongation and low-temperature toughness of the weld. The lithium fluoride also has the functions of reducing the viscosity and the melting point of the slag and increasing the fluidity of the slag, and the most main function of the lithium fluoride is to stabilize the electric arc, the melting point of LiF is 845 ℃, under the action of the welding electric arc, the ionization potential of Li is smaller, the Li is easy to be reduced by other reducing agents, the Li easily loses outer layer electrons and becomes lithium ions, and the electric conductivity is increased along with the increase of the electron concentration in an electric arc area, so that the electric arc is more stable.
Example 1
The utility model provides an intelligent aerial platform operation car cantilever crane welding uses the core material, by the total mass of core material, it includes the following raw materials of mass percent: 35% of rutile, 6% of quartz, 5% of magnesia, 5% of sodium fluoride, 15% of silicon-manganese alloy, 4% of ferrotitanium, 8% of nickel powder, 3% of copper powder, 5% of aluminum-magnesium alloy, 0.6% of high ferroboron, 1% of lithium fluoride and the balance of iron powder.
The flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle is prepared by applying the flux-cored material, and the preparation steps comprise:
s1, rutile and quartz are dried for the first time at 900 ℃, the drying time is 12 hours, magnesia, sodium fluoride, silicon-manganese alloy, ferrotitanium, nickel powder, copper powder, aluminum-magnesium alloy, high-boron iron, lithium fluoride and iron powder are dried for the first time at 250 ℃, the drying time is 15 hours, the flux core material after the first drying is added into a powder mixer to be uniformly mixed, then the uniformly mixed flux core material is dried for the second time at 150 ℃ to obtain a flux core material dry powder mixture, and the drying time is 1 hour to obtain the flux core material dry powder mixture.
S2, selecting a low-carbon steel strip with the thickness of 0.3mm and the width of 10mm as the steel strip sheath, longitudinally shearing and winding the steel strip sheath, cleaning the steel strip sheath by using a cleaning solution, and rolling the steel strip sheath into a U-shaped groove.
And S3, filling the dry powder mixture of the medicine core material into the U-shaped groove.
S4, closing the U-shaped groove containing the flux-cored material dry powder mixture, rolling the U-shaped groove into an O shape, and then performing operations such as welding, scar scraping, wire drawing and diameter reducing, layer winding and the like to obtain the flux-cored wire.
The filling coefficient of a flux-cored material in the flux-cored wire is 12%, and the diameter of the flux-cored wire is 1.2mm.
Example 2
The utility model provides an intelligent aerial platform operation car cantilever crane welding uses the core material, by the total mass of core material, it includes the following raw materials of mass percent: 38% of rutile, 7% of quartz, 2% of magnesite, 4% of sodium fluoride, 12% of silicon-manganese alloy, 4% of ferrotitanium, 8% of nickel powder, 1% of copper powder, 3% of aluminum-magnesium alloy, 0.4% of high ferroboron, 2% of lithium fluoride and the balance of iron powder.
The flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle is prepared by applying the flux-cored material, and the preparation steps comprise:
s1, rutile and quartz are dried for the first time at 950 ℃ for 10 hours, magnesia, sodium fluoride, silicon-manganese alloy, ferrotitanium, nickel powder, copper powder, aluminum-magnesium alloy, high-boron iron, lithium fluoride and iron powder are dried for the first time at 350 ℃ for 10 hours, the flux core material dried for the first time is added into a powder mixer to be uniformly mixed, then the uniformly mixed flux core material is dried for the second time at 100 ℃ to obtain a flux core material dry powder mixture, and the drying time is 2 hours, so that the flux core material dry powder mixture is obtained.
S2, selecting a low-carbon steel strip with the thickness of 0.3mm and the width of 10mm as the steel strip sheath, longitudinally shearing and winding the steel strip sheath, cleaning the steel strip sheath by using a cleaning solution, and rolling the steel strip sheath into a U-shaped groove.
And S3, filling the dry powder mixture of the medicine core material into the U-shaped groove.
S4, closing the U-shaped groove containing the flux-cored material dry powder mixture, rolling the U-shaped groove into an O shape, and then performing operations such as welding, scar scraping, wire drawing and diameter reducing, layer winding and the like to obtain the flux-cored wire.
The filling coefficient of a flux-cored material in the flux-cored wire is 16%, and the diameter of the flux-cored wire is 1.6mm.
Example 3
The utility model provides an intelligent aerial platform operation car cantilever crane welding uses the core material, by the total mass of core material, it includes the following raw materials of mass percent: 40% of rutile, 5% of quartz, 4% of magnesia, 5% of sodium fluoride, 12% of silicon-manganese alloy, 3% of ferrotitanium, 6% of nickel powder, 2% of copper powder, 4% of aluminum-magnesium alloy, 0.4% of high ferroboron, 1% of lithium fluoride and the balance of iron powder.
The flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle is prepared by applying the flux-cored material, and the preparation steps comprise:
s1, rutile and quartz are dried for the first time at 900 ℃, the drying time is 12 hours, magnesia, sodium fluoride, silicon-manganese alloy, ferrotitanium, nickel powder, copper powder, aluminum-magnesium alloy, high-boron iron, lithium fluoride and iron powder are dried for the first time at 250 ℃, the drying time is 15 hours, the flux core material after the first drying is added into a powder mixer to be uniformly mixed, then the uniformly mixed flux core material is dried for the second time at 150 ℃ to obtain a flux core material dry powder mixture, and the drying time is 1 hour to obtain the flux core material dry powder mixture.
S2, selecting a low-carbon steel strip with the thickness of 0.3mm and the width of 10mm as the steel strip outer skin, longitudinally shearing and winding the steel strip outer skin, cleaning by using a cleaning solution, and rolling into a U-shaped groove.
And S3, filling the dry powder mixture of the medicine core material into the U-shaped groove.
S4, closing the U-shaped groove containing the flux-cored material dry powder mixture, rolling the U-shaped groove into an O shape, and then performing operations such as welding, scar scraping, wire drawing and diameter reducing, layer winding and the like to obtain the flux-cored wire.
The filling coefficient of a flux-cored material in the flux-cored wire is 18%, and the diameter of the flux-cored wire is 1.6mm.
Example 4
The utility model provides an intelligent aerial platform operation car cantilever crane welding uses the core material, by the total mass of core material, it includes the following raw materials of mass percent: 45% of rutile, 3% of quartz, 3% of magnesite, 4% of sodium fluoride, 10% of silicon-manganese alloy, 1% of ferrotitanium, 6% of nickel powder, 1% of copper powder, 5% of aluminum-magnesium alloy, 0.3% of high ferroboron, 3% of lithium fluoride and the balance of iron powder.
The flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle is prepared by applying the flux-cored material, and the preparation steps comprise:
s1, rutile and quartz are dried for the first time at 900 ℃, the drying time is 12 hours, magnesia, sodium fluoride, silicon-manganese alloy, ferrotitanium, nickel powder, copper powder, aluminum-magnesium alloy, high-boron iron, lithium fluoride and iron powder are dried for the first time at 250 ℃, the drying time is 15 hours, the flux core material after the first drying is added into a powder mixer to be uniformly mixed, then the uniformly mixed flux core material is dried for the second time at 150 ℃ to obtain a flux core material dry powder mixture, and the drying time is 1 hour to obtain the flux core material dry powder mixture.
S2, selecting a low-carbon steel strip with the thickness of 0.3mm and the width of 10mm as the steel strip sheath, longitudinally shearing and winding the steel strip sheath, cleaning the steel strip sheath by using a cleaning solution, and rolling the steel strip sheath into a U-shaped groove.
And S3, filling the dry powder mixture of the medicine core material into the U-shaped groove.
S4, closing the U-shaped groove containing the flux-cored material dry powder mixture, rolling the U-shaped groove into an O shape, and then performing operations such as welding, scar scraping, wire drawing and diameter reducing, layer winding and the like to obtain the flux-cored wire.
The filling coefficient of a flux-cored material in the flux-cored wire is 14%, and the diameter of the flux-cored wire is 1.2mm.
The flux-cored wires prepared in examples 1 to 4 were used for trial welding, and a mixed gas including 80% argon and 20% carbon dioxide was used for shielding during welding. The welding parameters and flaw detection results of the test plate welding are shown in table 1.
Table 1 shows the welding parameters and flaw detection results of the test plate welding
And (3) performing mechanical property test on the deposited metal at the welding seam of the test plate, wherein the test items comprise a tensile strength test, a yield strength test and a low-temperature impact energy test, and the test results are shown in table 2.
Table 2 shows the results of mechanical property tests of deposited metals
The test results of the bending performance test of the butt joint of the test plate welding are shown in table 3.
Table 3 shows the results of the bending properties at the butt joints
As can be seen from the test results in tables 1 to 3, the deposited metal formed by the flux-cored wire for welding the boom of the intelligent aerial platform working truck prepared in embodiments 1 to 4 of the present invention has good mechanical properties, and the bending property at the welding joint is good, so that the performance requirements of the intelligent aerial platform working truck on the boom can be satisfied.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Those skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an intelligent aerial platform operation car cantilever crane welding uses medicinal core material which characterized in that, by the total mass of medicinal core material, it includes the following mass percent's raw materials: 35-45% of rutile, 3-7% of quartz, 2-5% of magnesia, 4-5% of sodium fluoride, 10-15% of silicon-manganese alloy, 1-4% of ferrotitanium, 6-8% of nickel powder, 1-3% of copper powder, 3-5% of aluminum-magnesium alloy, 0.3-0.6% of high ferroboron, 1-3% of lithium fluoride and the balance of iron powder.
2. The welding flux core material for the boom of the intelligent aerial platform working platform as claimed in claim 1, wherein the rutile is added in an amount of 38-40%.
3. The material of the intelligent aerial platform working platform boom welding explosive core for the aerial platform working vehicle as claimed in claim 1, wherein the addition amount of the quartz is 5-7%.
4. The material of the intelligent aerial platform working platform boom welding explosive core for the aerial platform working vehicle as claimed in claim 1, wherein the addition amount of the silicon-manganese alloy is 12-15%.
5. The flux-cored welding wire for welding the boom of the intelligent aerial platform operation vehicle is characterized by comprising a steel belt sheath and the flux-cored material as in claim 1, wherein the flux-cored material is filled in the steel belt sheath, the steel belt sheath is a low-carbon steel belt, and the low-carbon steel belt comprises the following components in percentage by mass based on the total mass of the low-carbon steel belt: less than or equal to 0.04 percent of carbon, 0.1 to 0.3 percent of manganese, less than or equal to 0.05 percent of silicon, less than or equal to 0.0250 percent of phosphorus, less than or equal to 0.020 percent of sulfur, and the balance of iron and inevitable impurities.
6. The flux-cored welding wire for welding the boom of the intelligent aerial platform working truck as claimed in claim 5, wherein the filling coefficient of the flux-cored material is 12-18%.
7. The flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle as claimed in claim 5, wherein the diameter of the flux-cored wire is 1.2-1.6 mm.
8. The preparation method of the flux-cored wire for welding the boom of the intelligent aerial platform working truck as claimed in any one of claims 5 to 7, wherein the preparation method comprises the following steps:
s1, carrying out primary drying on each component of a flux-cored material, adding the flux-cored material subjected to primary drying into a powder mixer, uniformly stirring and mixing, and then carrying out secondary drying on the uniformly mixed flux-cored material to obtain a dry powder mixture of the flux-cored material;
s2, rolling the steel strip into a U-shaped groove;
s3, filling the dry powder mixture of the flux core material into the U-shaped groove;
and S4, closing the U-shaped groove containing the flux-cored material dry powder mixture, rolling the U-shaped groove into an O shape, and drawing the U-shaped groove to the set diameter of the flux-cored wire.
9. The method for preparing the flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle as claimed in claim 8, wherein in step S1, the temperature for performing the first drying on rutile and quartz is 900 to 950 ℃, the drying time is 10 to 12 hours, the temperature for performing the first drying on magnesia, sodium fluoride, silicon-manganese alloy, ferrotitanium, nickel powder, copper powder, aluminum-magnesium alloy, high-boron iron, lithium fluoride and iron powder is 250 to 350 ℃, and the drying time is 10 to 15 hours.
10. The method for preparing the flux-cored wire for welding the boom of the intelligent aerial platform operation vehicle as claimed in claim 8, wherein in the step S1, the temperature for performing the second drying on the uniformly mixed flux-cored material is 100-150 ℃, and the drying time is 1-2 hours.
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| CN202211584442.6A CN115815881A (en) | 2022-12-09 | 2022-12-09 | Flux-cored material for welding of arm frame of intelligent aerial platform operation vehicle, welding wire containing flux-cored material and preparation method of flux-cored material |
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| CN202211584442.6A CN115815881A (en) | 2022-12-09 | 2022-12-09 | Flux-cored material for welding of arm frame of intelligent aerial platform operation vehicle, welding wire containing flux-cored material and preparation method of flux-cored material |
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| US5580475A (en) * | 1993-08-12 | 1996-12-03 | Kabushiki Kaisha Kobe Seiko Sho | Flux-cored wire for gas shield arc welding with low fume |
| CN113784815A (en) * | 2019-06-20 | 2021-12-10 | 株式会社神户制钢所 | Flux-cored wire and welding method |
| CN114055016A (en) * | 2021-11-30 | 2022-02-18 | 山东聚力焊接材料有限公司 | Flux-cored material, seamless flux-cored wire and manufacturing method |
| CN114986020A (en) * | 2022-06-30 | 2022-09-02 | 山东聚力焊接材料有限公司 | Flux-cored wire for welding ocean wind power tower |
| CN115070261A (en) * | 2022-06-30 | 2022-09-20 | 山东聚力焊接材料有限公司 | Stainless steel flux-cored wire |
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- 2022-12-09 CN CN202211584442.6A patent/CN115815881A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5580475A (en) * | 1993-08-12 | 1996-12-03 | Kabushiki Kaisha Kobe Seiko Sho | Flux-cored wire for gas shield arc welding with low fume |
| CN113784815A (en) * | 2019-06-20 | 2021-12-10 | 株式会社神户制钢所 | Flux-cored wire and welding method |
| CN114055016A (en) * | 2021-11-30 | 2022-02-18 | 山东聚力焊接材料有限公司 | Flux-cored material, seamless flux-cored wire and manufacturing method |
| CN114986020A (en) * | 2022-06-30 | 2022-09-02 | 山东聚力焊接材料有限公司 | Flux-cored wire for welding ocean wind power tower |
| CN115070261A (en) * | 2022-06-30 | 2022-09-20 | 山东聚力焊接材料有限公司 | Stainless steel flux-cored wire |
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