CN117206747A - Submerged arc welding flux special for welding wind power tower cylinders meeting pressure-bearing standard at 62 kg level - Google Patents
Submerged arc welding flux special for welding wind power tower cylinders meeting pressure-bearing standard at 62 kg level Download PDFInfo
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- CN117206747A CN117206747A CN202311193155.7A CN202311193155A CN117206747A CN 117206747 A CN117206747 A CN 117206747A CN 202311193155 A CN202311193155 A CN 202311193155A CN 117206747 A CN117206747 A CN 117206747A
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- arc welding
- wind power
- power tower
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- 238000003466 welding Methods 0.000 title claims abstract description 108
- 230000004907 flux Effects 0.000 title claims abstract description 41
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 17
- 239000000956 alloy Substances 0.000 claims abstract description 17
- 239000011572 manganese Substances 0.000 claims abstract description 16
- 239000004579 marble Substances 0.000 claims abstract description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 14
- 229910001634 calcium fluoride Inorganic materials 0.000 claims abstract description 14
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 14
- 239000010445 mica Substances 0.000 claims abstract description 14
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 14
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910000861 Mg alloy Inorganic materials 0.000 claims abstract description 13
- ATTFYOXEMHAYAX-UHFFFAOYSA-N magnesium nickel Chemical compound [Mg].[Ni] ATTFYOXEMHAYAX-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 13
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 229910000720 Silicomanganese Inorganic materials 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 239000011324 bead Substances 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 17
- 239000002184 metal Substances 0.000 description 17
- 239000002893 slag Substances 0.000 description 10
- 229910052739 hydrogen Inorganic materials 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical group [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 235000019353 potassium silicate Nutrition 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910006639 Si—Mn Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910001655 manganese mineral Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- XROWMBWRMNHXMF-UHFFFAOYSA-J titanium tetrafluoride Chemical compound [F-].[F-].[F-].[F-].[Ti+4] XROWMBWRMNHXMF-UHFFFAOYSA-J 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention provides a submerged arc welding flux special for welding a 62 kg-level wind power tower, which comprises the following raw materials in percentage by mass: 15-20% of calcium fluoride, 15-20% of aluminum oxide, 15-20% of marble, 10-15% of fused magnesia, 10-15% of rutile, 10-15% of mica, 5-10% of manganese ore powder, 5-10% of silicomanganese alloy and 1-5% of nickel-magnesium alloy; the sum of the weight percentages of the components is 100 percent. The submerged arc welding flux with the 62 kg level meeting the pressure-bearing standard wind power tower can meet the requirement of heavy current welding, is easy to deslagging, attractive in weld bead forming and small in post-welding machining allowance, can be used for welding the pressure-bearing standard wind power tower, can ensure welding quality, and is mainly used for welding large-scale thick plate steel structures.
Description
Technical Field
The invention belongs to the field of submerged arc welding, and particularly relates to a submerged arc welding flux special for welding a wind power tower cylinder with a 62 kg level meeting a pressure-bearing standard.
Background
Along with the development of wind power generation in China, the requirements on corresponding welding materials are higher and higher. The welding characteristics of the pressure-bearing standard wind power tower structure are that the welding quantity is large, the welding quality requirement is high, the welding period of the conventional welding method is long, the requirement of mass production is difficult to meet, the submerged arc welding is efficient in welding and good in welding process, and the welding material has very high comprehensive performance index requirement. The steel for the bearing standard wind power tower barrel structure has improved the requirements of tensile strength and low-temperature impact toughness, and further has corresponding requirements on the tensile strength and low-temperature impact toughness of matched welding materials.
Disclosure of Invention
In view of the above, the invention aims to overcome the defects in the prior art, and provides a submerged arc welding flux special for welding a wind power tower with the 62 kg level meeting the pressure-bearing standard.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a submerged arc welding flux special for welding a 62 kg-level wind power tower meeting pressure-bearing standard comprises the following raw materials in percentage by mass:
15-20% of calcium fluoride, 15-20% of aluminum oxide, 15-20% of marble, 10-15% of fused magnesia, 10-15% of rutile, 10-15% of mica, 5-10% of manganese ore powder, 5-10% of silicomanganese alloy and 1-5% of nickel-magnesium alloy; the sum of the weight percentages of the components is 100 percent.
Preferably, the submerged arc welding flux comprises the following raw materials in percentage by mass:
20% of calcium fluoride, 20% of aluminum oxide, 15% of marble, 10% of fused magnesia, 10% of rutile, 10% of mica, 5% of manganese ore powder, 5% of silicomanganese alloy and 5% of nickel-magnesium alloy.
Preferably, the submerged arc welding flux comprises the following raw materials in percentage by mass:
15% of calcium fluoride, 15% of aluminum oxide, 20% of marble, 10% of fused magnesia, 15% of rutile, 10% of mica, 5% of manganese ore powder, 5% of silicomanganese alloy and 5% of nickel-magnesium alloy.
Preferably, the submerged arc welding flux comprises the following raw materials in percentage by mass:
17% of calcium fluoride, 17% of aluminum oxide, 16% of marble, 12% of fused magnesia, 12% of rutile, 12% of mica, 6% of manganese ore powder, 6% of silicomanganese alloy and 2% of nickel-magnesium alloy.
The calcium fluoride has a lower melting point, is relatively active under the action of high temperature, reacts with silicon dioxide, titanium dioxide and the like to generate silicon tetrafluoride and titanium tetrafluoride gases, and can discharge hydrogen in an electric arc area, so that the hydrogen is prevented from being dissolved in metal, and the probability of generating pores is reduced. Because the melting point is low, the slag is diluted, the melting point of the slag can be reduced, the metal desulfurization is well performed, the oxygen content of weld metal is reduced, and the plasticity and impact toughness of the weld are improved. In the present invention, the calcium fluoride content is 15-20%.
The alumina is a main component of the flux, and is characterized in that the alumina is obtained from calcined alpha-type alumina, and the viscosity and the melting point of slag can be effectively controlled by adjusting the content and the proportion of the alumina, so that the crystal water of a finished flux product is reduced, and the content of harmful elements S/P is reduced. In the present invention, the content is 15-20%.
The addition of marble is a key technology of the invention, and carbon monoxide and carbon dioxide generated by the decomposition of marble can be combined with oxygen/hydrogen in a welding line, so that the oxygen content in the welding line and the partial pressure of hydrogen in an arc atmosphere are reduced, the content of harmful element oxygen/hydrogen in the welding line is reduced, the low-temperature impact toughness is improved, and the generation of hydrogen-induced cracks is reduced. In the present invention, the marble content is 15-20%.
The fused magnesia is a good slag-forming material, can increase the air permeability of slag, can reduce the viscosity of slag, can improve the desulfurization capability of a molten pool during welding, and reduces the content of impurity elements. In the invention, the content of the fused magnesia is 10-15%.
The rutile mainly adjusts the viscosity and the surface tension of slag, is favorable for deslagging and weld joint forming, and is TiO 2 Also has the characteristic of short slag, prevents slag from becoming long slag, and is suitable for the production of slagThe protection effect on the molten pool is lost, and the method is a key effect of excellent welding deslagging. However, too much addition is not preferred and will deteriorate the manufacturability during the welding process. In the present invention, the rutile content is 10-15%.
Mica is a key component in the flux of the invention, and can improve arc stability, improve the technological performance of the flux and refine weld seam ripple. In the present invention, the content thereof is 10-15%.
The addition of the manganese mineral powder prevents excessive burning loss of Mn in a molten pool, ensures a certain Mn content, reduces manganese oxide in the manganese ore into Mn under the action of an electric arc, can react with ferric oxide in the molten pool to reduce the O content in a welding line, reduces the inclusion content of the welding line, plays an important role in improving the mechanical property of the welding line, and can react with S in the molten pool to play a role in removing S. Manganese oxide is a low-melting-point substance, can reduce the melting point of welding flux, ensures proper viscosity and surface tension of slag, improves deslagging performance, refines a molten pool and plays a role in tempering. In the present invention, the content thereof is 5-10%.
The Si-Mn alloy is a good deoxidizer and desulfurizing agent, which can obviously improve the strength of the welding seam and improve the toughness of the welding seam, but the content is not too high, otherwise, the central crack of the welding seam is easy to generate. In the present invention, the content thereof is 5-10%.
The nickel-magnesium alloy can transition nickel element into the welding seam in the invention, the nickel element can improve the strength and toughness of the welding seam, but the content cannot be too high, the too high strength of the welding seam is easy to cause, the impact toughness is reduced, the magnesium element can reduce the O content in the welding seam, purify the welding seam metal and improve the impact toughness. In the present invention, the content thereof is 1 to 5%.
Compared with the prior art, the invention has the following advantages:
the submerged arc welding flux with the 62 kg level meeting the pressure-bearing standard wind power tower can meet the requirement of high-current welding, is easy to deslagging, attractive in weld bead forming and small in post-welding machining allowance, can be used for welding the pressure-bearing standard wind power tower, and can ensure welding quality; the welding method is mainly used for welding large-scale thick plate steel structures, such as welding large-scale pressure-bearing standard wind power tower structures.
The submerged arc welding flux with the 62 kg level meeting the pressure-bearing standard special for welding the wind power tower cylinder is added with various trace alloy elements, and can obviously improve impact toughness and ensure the yield ratio of welding seams by refining grains and improving inter-crystalline structure; the addition of a plurality of beneficial materials can effectively reduce the contents of harmful elements such as sulfur, phosphorus and hydrogen, reduce the damage to impact toughness and improve the comprehensive performance of the welding seam; the alloy element has higher content, can effectively supplement the burning loss of the alloy element in the welding process, and ensures that the mechanical property of the welding seam meets the standard requirement.
The submerged arc welding flux special for welding the wind power tower, which meets the pressure-bearing standard at the 62 kg level, contains more raw materials with stable physical properties, such as aluminum oxide, has very stable melting point and solidification point, and can adjust the melting point and solidification point of a molten pool so as to improve deslagging performance; marble can be decomposed in the welding process, and the content of harmful elements such as sulfur, phosphorus and the like in the welding seam is effectively reduced through chemical reaction. The mica can adjust the stability of the electric arc and improve the weld formation. And various alloys are added, so that the low-temperature toughness of the weld metal is improved.
Detailed Description
Unless defined otherwise, technical terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods are conventional methods unless otherwise specified.
The present invention will be described in detail with reference to examples.
Example 1
A preparation method of special submerged arc welding flux for welding a 62 kg-level wind power tower meeting pressure-bearing standards comprises the following steps:
(1) The submerged arc welding flux consists of the following raw materials in percentage by mass: 20% of calcium fluoride, 20% of aluminum oxide, 15% of marble, 10% of fused magnesia, 10% of rutile, 10% of mica, 5% of manganese ore powder, 5% of silicomanganese alloy and 5% of nickel-magnesium alloy;
(2) The adhesive is sodium potassium water glass, the modulus is 3.1-3.2, and the ratio of sodium potassium to 2:1.
(3) The submerged arc welding flux is prepared according to the components for detection, and according to national standard GB/T36034-2018, the chemical composition analysis of deposited metal and the mechanical property test of the deposited metal are carried out by matching with submerged arc welding wire SU41 with specification phi 4.0, and the results are shown in tables 1-3.
Welding specification: the welding power supply is in direct current reverse connection, the current is 550A, the voltage is 32V, the welding speed is 30m/h, and the inter-channel temperature is 135-165 ℃.
TABLE 1S/P content of flux
| Project | S | P |
| Guarantee value | ≤0.020 | ≤0.020 |
| Example value | 0.004 | 0.010 |
TABLE 2 deposited metal chemistry
| Project | S | P |
| Guarantee value | ≤0.010 | ≤0.010 |
| Example value | 0.002 | 0.009 |
TABLE 3 actual measurement of the mechanical properties of deposited metals
| Mechanical project | Rm(N/mm 2 ) | Rel(N/mm 2 ) | A(％) | KV2(J)-40℃ |
| Standard value | 620-820 | ≥500 | ≥15.0 | ≥47 |
| Actual measurement value | 655 | 560 | 19.0 | 112 118 119 |
Example 2
A preparation method of special submerged arc welding flux for welding a 62 kg-level wind power tower meeting pressure-bearing standards comprises the following steps:
(1) The submerged arc welding flux consists of the following raw materials in percentage by mass:
15% of calcium fluoride, 15% of aluminum oxide, 20% of marble, 10% of fused magnesia, 15% of rutile, 10% of mica, 5% of manganese ore powder, 5% of silicomanganese alloy and 5% of nickel-magnesium alloy;
(2) The adhesive is sodium potassium water glass, the modulus is 3.1-3.2, and the ratio of sodium potassium to 2:1.
(3) The submerged arc welding flux prepared according to the components is tested, and according to the national standard GB/T36034-2018, the chemical composition analysis of deposited metal and the mechanical property test of the deposited metal are carried out by matching with a submerged arc welding wire SU41 with the specification phi of 4.0, and the results are shown in tables 4-6.
Welding specification: the welding power supply is in direct current reverse connection, the current is 550A, the voltage is 32V, the welding speed is 30m/h, and the inter-channel temperature is 135-165 ℃.
TABLE 4S/P content of flux
| Project | S | P |
| Guarantee value | ≤0.020 | ≤0.020 |
| Example value | 0.006 | 0.010 |
TABLE 5 deposited metal chemistry
| Project | S | P |
| Guarantee value | ≤0.010 | ≤0.010 |
| Example value | 0.005 | 0.009 |
TABLE 6 actual measurement of mechanical properties of deposited metals
| Mechanical project | Rm(N/mm 2 ) | Rel(N/mm 2 ) | A(％) | KV2(J)-40℃ |
| Standard value | 620-820 | ≥500 | ≥15.0 | ≥47 |
| Actual measurement value | 672 | 583 | 18.0 | 103 105 101 |
Example 3
A preparation method of special submerged arc welding flux for welding a 62 kg-level wind power tower meeting pressure-bearing standards comprises the following steps:
(1) The submerged arc welding flux consists of the following raw materials in percentage by mass:
17% of calcium fluoride, 17% of aluminum oxide, 16% of marble, 12% of fused magnesia, 12% of rutile, 12% of mica, 6% of manganese ore powder, 6% of silicomanganese alloy and 2% of nickel-magnesium alloy.
(2) The adhesive is sodium potassium water glass, the modulus is 3.1-3.2, and the ratio of sodium potassium to 2:1.
(3) The submerged arc welding flux prepared according to the components is tested, and according to the national standard GB/T36034-2018, the chemical composition analysis of deposited metal and the mechanical property test of the deposited metal are carried out by matching with a submerged arc welding wire SU41 with the specification phi of 4.0, and the results are shown in tables 7-9.
Welding specification: the welding power supply is in direct current reverse connection, the current is 550A, the voltage is 32V, the welding speed is 30m/h, and the inter-channel temperature is 135-165 ℃.
TABLE 7S/P content of flux
TABLE 8 deposited metal chemistry
| Project | S | P |
| Guarantee value | ≤0.010 | ≤0.010 |
| Example value | 0.003 | 0.007 |
TABLE 9 actual measurement of mechanical properties of deposited metals
| Mechanical project | Rm(N/mm 2 ) | Rel(N/mm 2 ) | A(％) | KV2(J)-40℃ |
| Standard value | 620-820 | ≥500 | ≥15.0 | ≥47 |
| Actual measurement value | 668 | 562 | 20.0 | 129 135 128 |
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. A submerged arc welding flux special for welding a wind power tower with a 62 kg level meeting a pressure-bearing standard is characterized in that: the submerged arc welding flux consists of the following raw materials in percentage by mass:
15-20% of calcium fluoride, 15-20% of aluminum oxide, 15-20% of marble, 10-15% of fused magnesia, 10-15% of rutile, 10-15% of mica, 5-10% of manganese ore powder, 5-10% of silicomanganese alloy and 1-5% of nickel-magnesium alloy; the sum of the weight percentages of the components is 100 percent.
2. The submerged arc welding flux special for welding a wind power tower meeting pressure bearing standards at a 62 kg level according to claim 1, wherein the submerged arc welding flux is characterized in that: the submerged arc welding flux consists of the following raw materials in percentage by mass:
20% of calcium fluoride, 20% of aluminum oxide, 15% of marble, 10% of fused magnesia, 10% of rutile, 10% of mica, 5% of manganese ore powder, 5% of silicomanganese alloy and 5% of nickel-magnesium alloy.
3. The submerged arc welding flux special for welding a wind power tower meeting pressure bearing standards at a 62 kg level according to claim 1, wherein the submerged arc welding flux is characterized in that: the submerged arc welding flux consists of the following raw materials in percentage by mass:
15% of calcium fluoride, 15% of aluminum oxide, 20% of marble, 10% of fused magnesia, 15% of rutile, 10% of mica, 5% of manganese ore powder, 5% of silicomanganese alloy and 5% of nickel-magnesium alloy.
4. The submerged arc welding flux special for welding a wind power tower meeting pressure bearing standards at a 62 kg level according to claim 1, wherein the submerged arc welding flux is characterized in that: the submerged arc welding flux consists of the following raw materials in percentage by mass:
17% of calcium fluoride, 17% of aluminum oxide, 16% of marble, 12% of fused magnesia, 12% of rutile, 12% of mica, 6% of manganese ore powder, 6% of silicomanganese alloy and 2% of nickel-magnesium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311193155.7A CN117206747A (en) | 2023-09-15 | 2023-09-15 | Submerged arc welding flux special for welding wind power tower cylinders meeting pressure-bearing standard at 62 kg level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311193155.7A CN117206747A (en) | 2023-09-15 | 2023-09-15 | Submerged arc welding flux special for welding wind power tower cylinders meeting pressure-bearing standard at 62 kg level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117206747A true CN117206747A (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311193155.7A Pending CN117206747A (en) | 2023-09-15 | 2023-09-15 | Submerged arc welding flux special for welding wind power tower cylinders meeting pressure-bearing standard at 62 kg level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117206747A (en) |
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- 2023-09-15 CN CN202311193155.7A patent/CN117206747A/en active Pending
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