CN112404801B - Aluminum-titanium type acid sintered flux and preparation method thereof - Google Patents
Aluminum-titanium type acid sintered flux and preparation method thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
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Abstract
The application relates to an aluminum-titanium type acid sintered flux and a preparation method thereof, wherein the sintered flux is mainly prepared from dry mineral powder and a binder, and the dry mineral powder comprises the following components in percentage by weight: 10-18% of manganese ore, 45-52% of bauxite, 9-14% of titanium dioxide, 6-12% of dead-burned magnesia, 8-12% of fluorite powder, 1-3% of ferrosilicon alloy, 2-6% of wollastonite and 2-5% of ferromanganese alloy; the binder accounts for 20-30% of the total weight of the mineral dry powder components; according to the method, bauxite, manganese ore and titanium dioxide are used as main components, the usage amount of fluorite powder is reduced, and the dead burned magnesia and the ferromanganese alloy are added to generate a synergistic effect, so that the sintered flux with high strength, excellent low-temperature resistance toughness, stable arc combustion and excellent welding quality is prepared; the preparation method comprises the processes of mixing, granulating and sintering, and is simple, efficient, energy-saving and environment-friendly.
Description
Technical Field
The application relates to the technical field of sintered fluxes, in particular to an aluminum-titanium type acid sintered flux and a preparation method thereof.
Background
SJ501 is a general aluminum-titanium type acid sintered flux on the market, has the alkalinity of about 0.5-0.8, is dark brown round particles and has the particle size of 10-60 meshes. The welding wire is connected with the anode when the DC power supply is adopted for welding, the electric arc is stable, the welding seam is attractive in shape, the slag is easy to remove, and the deposited metal has excellent mechanical properties and is mainly used for welding occasions of low-carbon steel, low-alloy steel and certain low-alloy high-strength steel. At present, the welding seam formed by welding the aluminum-titanium type acid sintered flux on the market has higher strength, but the low-temperature resistance toughness of the welding seam is poor.
The traditional Chinese patent with application publication number CN110293333A discloses a marine high-fluorine aluminum titanium type sintered flux and a preparation method thereof, and the components of the sintered flux comprise dry-mixed raw materials and a binder, wherein the dry-mixed raw materials comprise the following components in percentage by mass: CaF2:68～72％，Al2O3:18～22％，TiO28 to 12 percent; the mass of the binder is 20-25% of that of the dry-mixed raw materials, during preparation, the dry mixing and the wet mixing are sequentially carried out according to the component proportion to prepare a wet mixed material, and after granulation and drying, the sintering time is 1-3 h at 280-600 ℃ to prepare the high-fluorine aluminum titanium type sintered flux for the ship. The sintered flux can be used for welding to obtain uniform welding seam components, and the welding seam has smooth metal welding bead, high welding seam strength and good low-temperature resistance and toughness.
However, the above-mentioned aluminum-titanium type sintered flux contains a large amount of fluorite powder, fluorine is separated in an arc atmosphere, the ionization potential of fluorine is high and is not easy to ionize, while the outermost layer of fluorine has seven electrons, which are easy to get electrons to become negative ions, and when the flux is connected positively, the fluorine ions move into a molten pool to increase splashing, thereby causing unstable arc combustion and affecting welding quality.
Disclosure of Invention
Aiming at the defects in the prior art, one of the purposes of the application is to provide an aluminum-titanium type acid sintered flux, and a welding seam obtained by welding by adopting the acid sintered flux has higher strength and good low-temperature-resistant toughness; the electric arc combustion is kept stable in the welding process, and the welding quality is excellent; the second purpose of the application is to provide a preparation method of the aluminum-titanium type acid sintered flux, which is simple and has excellent product performance.
The above object of the present invention is achieved by the following technical solutions:
an aluminum-titanium type acid sintered flux comprises a mineral dry powder and a binder, wherein the mineral dry powder comprises the following components in percentage by weight: 10-18% of manganese ore, 45-52% of bauxite, 9-14% of titanium dioxide, 6-12% of dead-burned magnesia, 8-12% of fluorite powder, 1-3% of ferrosilicon, 2-6% of wollastonite and 2-5% of ferromanganese; the binder accounts for 20-30% of the total weight of the mineral dry powder components.
By adopting the technical scheme, bauxite is used as a main component in the acid sintered flux, the main component of the bauxite is aluminum oxide, and the aluminum oxide is amphoteric metal, so that the adjustment of a melting temperature interval of molten slag is facilitated, the scale ripples on the surface of a weld joint are fine, and the slag removal is easy; the main component of the manganese ore is MnO, some manganese elements can be transited into a welding seam in the welding process to play a role in improving the mechanical property of the welding seam, and if the addition amount of the MnO is too small, the requirement cannot be met; if the addition amount of MnO is too much, welding slag is too thin, and welding bead forming becomes poor; the main component of the titanium dioxide is SiO2The acid oxide has the function of reducing the alkalinity of the slag, can reduce the melting point of the slag, improve the fluidity of the slag, and simultaneously has the function of reducing the surface tension of the slag, can reduce the adhesive force between the slag and liquid metal, and is beneficial to improving the slag removal performance;
the main component of the dead burnt magnesia belongs to a cementing material, the dead burnt magnesia is a periclase compact block formed by the complete escape of carbon dioxide when magnesite is calcined at 1800 ℃, and the dead burnt magnesia has the function of improving the impact toughness of deposited metal; the melting point of the dead burnt magnesia is high, which is beneficial to improving the viscosity of the slag and inhibiting the fluidity of the slag, if the addition amount is too high, the weld joint is deformed and damaged, and if the addition amount is too low, the mechanical property of the weld joint cannot be ensured; the fluorite powder plays a role of a fluxing agent, when the content of the fluorite powder is too high, molten drops are too thin, the wall of an arc cavity is difficult to stably maintain, the cavity is easy to damage, and air is injected into an arc area at the moment when the cavity is damaged, so that the arc combustion is unstable; moreover, the fluorite powder can also improve the anti-porosity performance, thereby ensuring the smooth surface of the welding seam;
the ferrosilicon alloy can obtain deposited metal with isometric crystal structure, improves the structure and performance of the deposited metal, and ensures that the deposited metal has higher mechanical property and good crack resistance; can also be used as deoxidizer;
wollastonite belongs to a chain metasilicate, is fibrous and acicular, has the structure determining property, adopts the wollastonite to replace clay, reduces the silicon content, increases the calcium oxide content, improves the alkalinity, and simultaneously has high whiteness, good dielectric property and high heat resistance and weather resistance;
the ferromanganese alloy has higher melting point and density, and is beneficial to improving the mechanical property and the low-temperature resistance toughness of a welding seam;
bauxite, manganese ore and titanium dioxide are used as main components, the usage amount of fluorite powder is reduced, and dead-burned magnesia and ferromanganese alloy are added to generate a synergistic effect, so that the sintered flux with high strength, excellent low-temperature resistance toughness, stable electric arc combustion and excellent welding quality is prepared.
The application can be further configured in a preferred example, wherein the mineral dry powder comprises the following components in percentage by weight: 12-15% of manganese ore, 47-50% of bauxite, 10-12% of titanium dioxide, 8-10% of dead-burned magnesia, 10-12% of fluorite powder, 1-3% of ferrosilicon, 3-5% of wollastonite and 2-4% of ferromanganese; the binder accounts for 20-25% of the total weight of the mineral dry powder components.
By adopting the technical scheme, the content of each component in the sintered flux is optimized, so that the sintered flux with more excellent strength, low-temperature toughness and welding quality indexes is prepared, and the formula content with excellent comprehensive performance is selected.
The present application may further be configured in a preferred example, that the mineral dry powder comprises the following components by weight percentage: 13% of manganese ore, 48% of bauxite, 10% of titanium dioxide, 9% of dead-burned magnesia, 11% of fluorite powder, 2% of ferrosilicon alloy, 4% of wollastonite and 3% of ferromanganese alloy; the binder accounts for 25% of the total weight of the mineral dry powder components.
By adopting the technical scheme, the contents of all components in the sintered flux are further optimized, the preparation of the sintered flux with optimal strength, low-temperature-resistant toughness and welding quality indexes is facilitated, and the formula content with optimal comprehensive performance is selected.
In a preferred example, the present application may be further configured to further include 5-9% of an alkalinity melting point regulator, where the alkalinity melting point regulator includes the following components by weight: 55-70% of dead burnt magnesia, 20-30% of wollastonite powder, 5-10% of potassium carbonate solution and 5-10% of potassium feldspar.
By adopting the technical scheme, the fluorine content is reduced, the stability of arc combustion is favorably maintained, the welding quality is improved, but the reduction of the fluorine content is easy to cause the reduction of the low-temperature resistance toughness of the welding line, and the addition of the alkalinity melting point regulator is favorable for further improving the low-temperature resistance toughness of the welding line; the alkalinity melting point regulator is prepared by dead-burned magnesia, wollastonite powder, potassium carbonate solution and potassium feldspar; the dead burned magnesia has high melting point, glass luster and high hardness; the potassium carbonate and the potassium feldspar are used as welding flux components, and the potassium oxide is low in ionization energy, can improve the arc voltage, reduces the activation energy of cathode spots, and enables electrons to be easily excited, so that the arc is easily ignited and stably burnt; in addition, the potassium oxide is a strong alkaline oxide, has strong binding capacity to S, P, can eliminate the content of S, P in weld metal, and is beneficial to improving the low temperature resistance of the weld; the wollastonite powder increases the silicon content and the calcium content, and is helpful for improving alkalinity.
The present application may be further configured in a preferred example that the preparation method of the alkalinity melting point modifier adopts the following steps:
(1) under the stirring state, spraying a potassium carbonate solution on the surface of the dead burned magnesia in a spraying state;
(2) adding wollastonite powder and potash feldspar, and uniformly stirring to obtain a blend;
(3) putting the blend into a granulator, and granulating to obtain spherical particles, wherein the spraying flow of water mist is 0.25-0.3L/min; (4) and calcining the spherical particles at the high temperature of 750 +/-10 ℃ until the water content is lower than 1 percent to prepare the alkalinity melting point regulator.
By adopting the technical scheme, the potassium carbonate solution is used for wetting the surface of the dead burnt magnesia in a spraying mode, so that the surface of the dead burnt magnesia can be fully wetted, after the dead burnt magnesia is wetted, wollastonite powder and the dead burnt magnesia are mixed more uniformly, and then the alkalinity regulator is prepared through granulation and sintering, so that the alkalinity of the sintered flux can be favorably regulated, the preparation process is simple, and the performance of the regulator is stable.
Another object of the present invention is to provide a method for preparing an aluminum-titanium type acid sintered flux, which comprises the following steps:
(1) weighing the components according to the weight percentage;
(2) stirring the components of the mineral dry powder, adding the binder, and continuously stirring to obtain a mixture;
(3) granulating the mixture into balls, drying and screening;
(4) sintering according with the granularity, wherein the sintering temperature is 750-820 ℃, the sintering time is 1-1.5 h, and natural wind cooling is adopted after sintering.
By adopting the technical scheme, the preparation method of the sintered flux is provided, the mineral dry powder and the binder are uniformly mixed, then granulation is carried out, and sintering is carried out for 1-1.5 hours at the temperature of 750-820 ℃, so that the components are favorably fused together, the sintered flux is uniform in component, the preparation method is simple and efficient, and the prepared sintered flux is uniform in component and stable in performance.
The present application may be further configured in a preferred example to: and (3) stirring speed in the step (2) is 12-15 r/min.
By adopting the technical scheme, when the components of the mineral dry powder, the mineral dry powder and the binder are stirred, the stirring speed is low, the mineral dry powder and the binder are uniformly mixed, the dust flying can be reduced, and the pollution to the surrounding environment is reduced.
The present application may be further configured in a preferred example to: and (4) in the step (3), the drying temperature is 150-200 ℃, and the drying time is 1 h.
By adopting the technical scheme, the drying temperature is selected to be 150-200 ℃, so that the evaporation of water in the mineral dry powder and the binder is accelerated, and a good drying effect is achieved.
The present application may be further configured in a preferred example to: the manganese ore and the bauxite in the dry mineral powder component are subjected to natural gas calcination pretreatment, and the calcination temperature is 1200-1400 ℃.
By adopting the technical scheme, the manganese ore and the bauxite account for more in the sintered flux, most of the manganese ore and the bauxite are mined from mineral products, the water content is high, and before the sintered flux is prepared, the natural gas is used for calcining the manganese ore and the bauxite, so that the water content of the sintered flux is obviously reduced, and the reduction of the content of diffused hydrogen during welding is facilitated.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the sintered flux is used for welding, the arc combustion is stable, and the welding quality is excellent;
2. after the sintered flux is used for welding, the welding seam has higher strength and excellent low-temperature-resistant toughness;
3. the application also develops an alkalinity melting point regulator, can realize the replacement of potassium element and calcium element during welding, regulates the alkalinity of the sintered flux and is beneficial to further improving the low-temperature-resistant toughness of the welding line;
4. the preparation method disclosed by the application is simple, efficient, energy-saving, environment-friendly and has excellent practicability.
Detailed Description
The present application will be described in further detail with reference to examples.
Wollastonite powder is purchased from bright mineral products in the Lingshou county of Hebei; the potassium carbonate solution is a self-made potassium carbonate solution with the mass concentration of 50%; the binder is made of sodium-potassium water glass and purchased from Juzhuang Shangcheng Peng sodium silicate Limited; the production place of the ferrosilicon alloy is Henan Anyang, FeSi72(ii) a The product of the ferromanganese alloy is FeMn84C0.7.
Preparation of raw materials example one:
an alkalinity melting point regulator is prepared by the following steps:
(1) preparing materials: weighing the following components in percentage by weight, 55% of dead-burned magnesite, 30% of wollastonite powder, 5% of potassium carbonate solution with the mass concentration of 50% and 10% of potassium feldspar;
(2) spraying a potassium carbonate solution on the surface of the dead burned magnesia in a spraying state under the stirring state;
(3) adding wollastonite powder and potash feldspar, and uniformly stirring to obtain a blend;
(4) putting the blend into a granulator, and granulating to obtain spherical particles, wherein the spraying flow of water mist is 0.25L/min;
(5) and calcining the spherical particles at a high temperature of 750 ℃ until the water content is lower than 1 percent to prepare the alkalinity melting point regulator.
Preparation example ii of raw material:
the alkalinity melting point regulator is different from the first raw material preparation example in formula content, and comprises the following components in percentage by weight: 60% of dead burnt magnesia, 25% of wollastonite powder, 7% of potassium carbonate solution and 8% of potassium feldspar.
Preparation example three of raw materials:
the alkalinity melting point regulator is different from the first raw material preparation example in formula content, and comprises the following components in percentage by weight: 70% of dead burned magnesia, 20% of wollastonite powder, 5% of potassium carbonate solution and 5% of potassium feldspar.
The first embodiment is as follows:
an aluminum-titanium type acid sintered flux is prepared by the following steps:
(1) preparing materials: weighing the following components by weight percent, namely 10% of manganese ore, 45% of bauxite, 14% of titanium dioxide, 10% of dead-burned magnesia, 12% of fluorite powder, 2% of ferrosilicon alloy, 2% of wollastonite and 5% of ferromanganese alloy; the binder accounts for 20 percent of the total weight of the mineral dry powder components; wherein, the manganese ore and the bauxite are subjected to calcination pretreatment for 1h at 1300 ℃ by natural gas;
(2) stirring the components of the mineral dry powder at the stirring speed of 15r/min, adding the binder, and continuously stirring to obtain a mixture;
(3) granulating the mixture into balls, drying at 180 ℃ for 1h, and screening;
(4) and sintering the particles with the granularity of 780 ℃ for 1h, cooling by using natural wind after sintering, and sieving by using a sieve of 12-40 meshes.
Example two:
the aluminum-titanium type acid sintered flux is different from the first embodiment in formula content, and comprises the following components by weight percent, namely, dry mineral powder, 12% of manganese ore, 48% of bauxite, 10% of titanium dioxide, 10% of dead-burned magnesia, 10% of fluorite powder, 2% of ferrosilicon alloy, 5% of wollastonite and 3% of ferromanganese alloy; the binder accounts for 20 percent of the total weight of the mineral dry powder components.
Example three:
the aluminum-titanium type acid sintered flux is different from the first embodiment in formula content, and comprises the following components by weight percent, namely, mineral dry powder, 13% of manganese ore, 48% of bauxite, 10% of titanium dioxide, 9% of dead-burned magnesia, 11% of fluorite powder, 2% of ferrosilicon alloy, 4% of wollastonite and 3% of ferromanganese alloy; the binder accounts for 20 percent of the total weight of the mineral dry powder components.
Example four:
an aluminum-titanium type acid sintered flux is different from the first embodiment in formula content, and comprises the following components by weight percent, namely, dry mineral powder, 15% of manganese ore, 50% of bauxite, 10% of titanium dioxide, 8% of dead-burned magnesia, 10% of fluorite powder, 2% of ferrosilicon alloy, 3% of wollastonite and 2% of ferromanganese alloy; the binder accounts for 20% of the total weight of the mineral dry powder components.
Example five:
the aluminum-titanium type acid sintered flux is different from the first embodiment in formula content, and comprises the following components by weight percent, namely, dry mineral powder, 18% of manganese ore, 52% of bauxite, 9% of titanium dioxide, 6% of dead-burned magnesia, 10% of fluorite powder, 1% of ferrosilicon alloy, 2% of wollastonite and 2% of ferromanganese alloy; the binder accounts for 20% of the total weight of the mineral dry powder components.
Example six:
an aluminum-titanium type acidic sintered flux is characterized in that an alkalinity melting point regulator prepared by the first raw material preparation example is added in a formula, and dry mineral powder, 10% of manganese ore, 45% of bauxite, 10% of titanium dioxide, 8% of dead-burned magnesia, 12% of fluorite powder, 3% of ferrosilicon alloy, 2% of wollastonite, 5% of ferromanganese and 5% of alkalinity melting point regulator are weighed according to the following components in percentage by weight; the binder accounts for 20 percent of the total weight of the mineral dry powder components; the rest of the steps are the same as the first embodiment.
Example seven:
an aluminum-titanium type acid sintered flux is different from the sixth embodiment in that 10% of fluorite powder, 7% of an alkalinity melting point regulator and the balance of the components are weighed.
Example eight:
an aluminum-titanium type acid sintered flux is different from the sixth embodiment in that 8% of fluorite powder, 9% of an alkalinity melting point regulator and the balance of the components are weighed.
Example nine:
an aluminum-titanium type acidic sintered flux is different from the sixth embodiment in that the alkalinity melting point regulator is prepared from the second preparation example.
Example ten:
an aluminum-titanium type acid sintered flux is different from the sixth embodiment in that the alkalinity melting point regulator is prepared from the third preparation example.
Comparative example one:
an acid sintered flux differing from the one of the first embodiment in that 13% of fluorite powder, 44% of bauxite, and the rest of the composition and method remain the same as in the first embodiment.
Comparative example two:
an acid sintered flux, which is different from the first embodiment in that 7% of fluorite powder, 48% of bauxite, 12% of manganese ore, and the rest of the components and the method are the same as those in the first embodiment.
Comparative example three:
an acid sintered flux, which is different from the first embodiment in that the formula lacks dead-burned magnesite, the weight percentage of manganese ore is increased to 12%, the weight percentage of bauxite is increased to 48%, and the weight percentage of ferromanganese is increased to 10%.
Comparative example four:
an acid sintered flux differing from the first example in that the formulation lacks ferromanganese, increasing the weight percentage of dead burned magnesite to 15%.
The detection means is as follows:
(1) mechanical properties: according to GB/T25774.2-2016, part 2 of the examination of solder materials: the method comprises the following steps of testing the tensile strength, the yield strength and the-20 ℃ impact absorption power of a steel by using the joint mechanics of single-sided single welding and double-sided single welding, GB/T12470-;
(2) the welding process comprises the following steps: the sample is subjected to surface overlaying by adopting a steel plate, the plate is X70 steel, the plate thickness is 14mm, the welding wire is SU1M3TiB, a welding machine MZ-1000 type is used, the welding current is 1000A, the voltage is 40A, the welding speed is 1.2M/min, and the extension length of the welding wire is 25-30 mm.
The mechanical property test results are shown in table 1:
TABLE 1
As can be seen from table 1, according to the examples, the tensile strength, yield strength, elongation and-20 ℃ impact absorption power of the weld joint are high after welding with the sintered flux of the present application, and therefore, in order to make the weld joint have both high strength and low temperature toughness, the selection of components and the blending of the component contents are particularly critical, and the effect is far beyond expectation. According to the sixth embodiment to the eighth embodiment, the addition of the alkalinity melting point regulator is beneficial to improving the low-temperature resistance toughness of the welding line; according to the first comparative example and the second comparative example, the mechanical strength and the low-temperature resistance toughness of the welding line are inferior to those of the embodiment of the application no matter the content of the fluorite powder is increased or reduced; according to the third comparative example and the fourth comparative example, the addition of the dead burnt magnesia or the ferromanganese alloy alone is inferior to the examples of the present application in low-temperature toughness, and the gap between the effects is obvious.
The results of the welding process are shown in table 2:
TABLE 2
According to the table, when the content of the fluorite powder is beyond the protection range of the application, the liquid of a molten pool is easy to splash during welding, and the arc stability during welding is reduced; meanwhile, the slag removal performance is negatively influenced, the slag removal is realized by slightly starting, pockmarks are occasionally formed on the surface of a welded joint after welding and are in off-white arc transition, and the middle of an arc slightly protrudes, so that the quality of the surface of the welded joint is influenced.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (7)
1. An aluminum-titanium type acid sintered flux comprises mineral dry powder and a binder, and is characterized in that the mineral dry powder comprises the following components in percentage by weight: 10-18% of manganese ore, 45-52% of bauxite, 9-14% of titanium dioxide, 6-12% of dead-burned magnesia, 8-12% of fluorite powder, 1-3% of ferrosilicon, 2-6% of wollastonite and 2-5% of ferromanganese; the binder accounts for 20-30% of the total weight of the mineral dry powder components; the alkalinity melting point regulator is prepared from the following components in percentage by weight: 55-70% of dead burned magnesia, 20-30% of wollastonite powder, 5-10% of potassium carbonate solution and 5-10% of potassium feldspar; the preparation method of the alkalinity melting point regulator comprises the following steps:
(1) spraying a potassium carbonate solution on the surface of the dead burned magnesia in a spraying state under the stirring state;
(2) adding wollastonite powder and potassium feldspar, and uniformly stirring to obtain a blend;
(3) putting the blend into a granulator, and granulating to obtain spherical particles, wherein the spraying flow of water mist is 0.25-0.3L/min;
(4) and calcining the spherical particles at the high temperature of 750 +/-10 ℃ until the water content is lower than 1 percent to prepare the alkalinity melting point regulator.
2. The acid sintered flux of the aluminum titanium type as claimed in claim 1, wherein said mineral dry powder comprises the following components in weight percent: 12-15% of manganese ore, 47-50% of bauxite, 10-12% of titanium dioxide, 8-10% of dead-burned magnesia, 10-12% of fluorite powder, 1-3% of ferrosilicon, 3-5% of wollastonite and 2-4% of ferromanganese; the binder accounts for 20-25% of the total weight of the mineral dry powder components.
3. An acid sintered flux of the aluminum-titanium type according to claim 1, characterized in that said mineral dry powder comprises the following components in weight percent: 13% of manganese ore, 48% of bauxite, 10% of titanium dioxide, 9% of dead-burned magnesia, 11% of fluorite powder, 2% of ferrosilicon alloy, 4% of wollastonite and 3% of ferromanganese alloy; the binder accounts for 25% of the total weight of the mineral dry powder components.
4. A method for preparing an acid sintered flux of the aluminum titanium type according to claim 1, characterized by comprising the steps of:
(1) weighing the components according to the weight percentage;
(2) stirring the components of the mineral dry powder, adding a binder, and continuously stirring to obtain a mixture;
(3) granulating the mixture into balls, drying and screening;
(4) sintering according with the granularity, wherein the sintering temperature is 750-820 ℃, the sintering time is 1-1.5 h, and natural wind cooling is adopted after sintering.
5. The method for preparing an acid sintered flux of aluminum titanium type according to claim 4, characterized in that: and (3) stirring speed in the step (2) is 12-15 r/min.
6. The method for preparing an aluminum-titanium type acid sintered flux according to claim 4, characterized in that: and (4) drying at the temperature of 150-200 ℃ for 1h in the step (3).
7. The method for preparing an acid sintered flux of aluminum titanium type according to claim 4, characterized in that: the manganese ore and the bauxite in the dry mineral powder components are subjected to natural gas calcination pretreatment, and the calcination temperature is 1200-1400 ℃.
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| CN101549445A (en) * | 2009-05-08 | 2009-10-07 | 西安理工大学 | Submerged arc welding flux material for X80 pipeline steel and preparing method thereof |
| EP3081327A1 (en) * | 2015-04-15 | 2016-10-19 | Nippon Steel & Sumikin Welding Co., Ltd. | Flux-cored wire for gas-shielded arc welding |
| CN106514055A (en) * | 2016-12-29 | 2017-03-22 | 沪东重机有限公司 | Ship steel submerged-arc horizontal welding flux and preparation method thereof |
| CN111673316A (en) * | 2020-06-13 | 2020-09-18 | 济南市金材焊接材料有限公司 | Fluorine-alkali sintered flux and preparation method and application thereof |
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2020
- 2020-11-23 CN CN202011320458.7A patent/CN112404801B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101434018A (en) * | 2008-11-13 | 2009-05-20 | 永州市兴发电熔科技有限公司 | Middle-manganese high-silicon low-fluorine smelting type welding flux |
| CN101412169A (en) * | 2008-11-28 | 2009-04-22 | 西安信和科技开发有限公司 | Explosive core raw material composing component of heat-resisting wear-resistant flux-cored wire |
| CN101549445A (en) * | 2009-05-08 | 2009-10-07 | 西安理工大学 | Submerged arc welding flux material for X80 pipeline steel and preparing method thereof |
| EP3081327A1 (en) * | 2015-04-15 | 2016-10-19 | Nippon Steel & Sumikin Welding Co., Ltd. | Flux-cored wire for gas-shielded arc welding |
| CN106514055A (en) * | 2016-12-29 | 2017-03-22 | 沪东重机有限公司 | Ship steel submerged-arc horizontal welding flux and preparation method thereof |
| CN111673316A (en) * | 2020-06-13 | 2020-09-18 | 济南市金材焊接材料有限公司 | Fluorine-alkali sintered flux and preparation method and application thereof |
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