CN110293336A - A kind of fluorine aluminium titanium-type fysed flux peculiar to vessel and preparation method thereof - Google Patents
A kind of fluorine aluminium titanium-type fysed flux peculiar to vessel and preparation method thereof Download PDFInfo
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- CN110293336A CN110293336A CN201910575359.4A CN201910575359A CN110293336A CN 110293336 A CN110293336 A CN 110293336A CN 201910575359 A CN201910575359 A CN 201910575359A CN 110293336 A CN110293336 A CN 110293336A
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- vessel
- aluminium titanium
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—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
-
- 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
Abstract
A kind of fluorine aluminium titanium-type fysed flux peculiar to vessel of the invention and preparation method thereof.Fysed flux contains ingredient by mass percentage are as follows: CaF2: 58~62%, Al2O3: 18~22%, TiO2: 18~22%.After raw material is mixed according to the ratio, melting at 1480~1540 DEG C, soaking time is 10~30min, is quenched after melting, in 700~750 DEG C of 2~3h of roasting, calcining matter after crushing, obtains fluorine aluminium titanium-type fysed flux peculiar to vessel.It is 39.41%~42.13% that the solder flux of this method preparation, which welds the acicular ferrite volume fraction to be formed in weld structure, the tensile strength of the resulting welding point of postwelding is 675~775MPa, Vickers hardness is 215~238Hv, and -40 DEG C of ballistic works are 69~76J.Overall performance is good.
Description
Technical field
The invention belongs to welding technology field, specifically a kind of fluorine aluminium titanium-type fysed flux peculiar to vessel and preparation method thereof.
Background technique
For the enlarged development trend for adapting to ship, raising shipbuilding efficiency is extremely urgent, and large-line energy submerged-arc welding is
It improves construction efficiency and reduces effective behave of cost, but when Large Heat Input Welding, since welding point high-temperature residence time becomes
It is long, it is easy to cause AUSTENITE GRAIN COARSENING, and postwelding cooling rate is small, causes the intensity and toughness severe exacerbation of welding point.Submerged arc
Weld solder flux be one of main consumable material of submerged-arc welding, in the welding process Resistance of Weld Metal rise mechanical protection, Metallurgical processing and
Improve the effect of welding technological properties, the welding technological properties and chemical metallurgy performance of solder flux are to determine weld metal quality
Key factor.Domestic existing solder flux contains more hydrophilic compounds, and moisture absorption tendency is big, and weld metal stomata easily generated is not easy to protect
Demonstrate,prove the processing performance of solder flux.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of fluorine aluminium titanium-type fysed fluxes peculiar to vessel and preparation method thereof；
Fysed flux of the invention is that a kind of welding process is stable, can obtain tiny acicular ferrite structure, welding bead surface light
Sliding, the good fysed flux of the removability of slag, meets deck of boat steel welding technology to the pressing needs of the solder flux of function admirable.
A kind of fluorine aluminium titanium-type fysed flux peculiar to vessel, by mass percentage containing ingredient are as follows: CaF2: 58~62%, Al2O3:
18~22%, TiO2: 18~22%；Wherein, the mass percent summation of each component is 100%.
The fluorine aluminium titanium-type fysed flux peculiar to vessel is welded, and the acicular ferrite volume fraction in weld structure is
39.41%~42.13%, the tensile strength of the resulting welding point of postwelding is 675~775MPa, Vickers hardness is 215~
238Hv, -40 DEG C of ballistic works are 69~76J.
The preparation method of fluorine aluminium titanium-type fysed flux peculiar to vessel of the invention, includes the following steps:
Step 1, melting:
(1) proportion for pressing fluorine aluminium titanium-type fysed flux peculiar to vessel, weighs each component raw materials of Ca F2、Al2O3、TiO2, by each raw material
It is uniformly mixed；
(2) by uniformly mixed raw material, 10~30min is kept the temperature after melting, and smelted product is made；Wherein, smelting temperature its
1480~1540 DEG C；
(3) by smelted product water quenching, semi-finished product are made；
Step 2, high-temperature roasting:
By semi-finished product in 700~750 DEG C of 2~3h of roasting, product of roasting is made；
Step 3, it is crushed:
Product of roasting is broken, sieving, granularity are the particle of 10~40 mesh, fluorine aluminium titanium-type fysed flux as peculiar to vessel.
The preparation method of above-mentioned fluorine aluminium titanium-type fysed flux peculiar to vessel, in which:
In the step 1, each raw material is put into mixing equipment, by stirring to obtain uniform powder.
In the step 1, melting uses graphite crucible.
In the step 2, high-temperature roasting uses Muffle furnace.
In the step 2, the carbon dust in solder flux is eliminated by high-temperature roasting.
The application method of the fluorine aluminium titanium-type fysed flux peculiar to vessel, comprising the following steps:
(1) by fluorine aluminium titanium-type fysed flux peculiar to vessel at 200~400 DEG C, 1~3h is dried；
(2) fluorine aluminium titanium-type fysed flux peculiar to vessel after drying cooperation low-carbon type welding wire welds low-carbon and low-alloy ship steel
It connects, obtains welding point.
In the step (1), drying operation carries out in drying box.
In the step (2), low-carbon and low-alloy ship steel is EH36 grades of ship steels.
In the step (2), low-carbon type welding wire is H08Mn2SiA.
In the step (2), detailed process is welded are as follows: use double wire hidden arc welding, a height of 40mm of solder flux heap, preceding silk direct current
850A/32V, rear silk exchange 625A/36V, speed of welding 50cmmin- 1。
Contain TiO in fluorine aluminium titanium-type solder flux of the invention2, be conducive to titanium and be dissolved in weld metal, titanium can be in conjunction with oxygen
Fine foreign matter of the Dispersed precipitate in weld metal is generated, the formation of acicular ferrite in welding cooling procedure, refinement are promoted
Tissue, improves the mechanical property of weld metal.CaF2Solder flux fusing point can be effectively reduced, meet solder flux processing performance.To improve
Welding joint mechanical property, it is necessary to prepare a kind of function admirable, tiny acicular ferrite structure, Neng Goushi can be obtained
Existing weld metal high intensity and high rigidity, the good fluorine aluminium titanium-type fysed flux of appearance of weld.
And the weld metal oxygen content obtained by means of the present invention reaches between 200~500ppm, in weld metal
It is easier to generate the non-metallic inclusion of induced synthesis acicular ferrite nucleating, to obtain the weld seam of superior performance.
Compared with prior art, the present invention the utility model has the advantages that
The present invention is prepared for a kind of New Marine fluorine aluminium titanium-type fysed flux, which has good chemical component uniform
Property, moisture absorption is low (storage convenient), can be well matched with low-carbon and low-alloy ship steel and obtain uniform composition of weld line, good
Weld strength and hardness；Weld metal ingredient is uniform, and metal welding bead is smooth, and deoxidation is good, can through detecting zero defect
Meet the technique requirement of welding.
Detailed description of the invention:
Fig. 1 is that fluorine aluminium titanium-type fysed flux peculiar to vessel prepared by embodiment 1 welds the welding point cutting section optics to be formed
Micrograph；
Fig. 2 is that fluorine aluminium titanium-type fysed flux peculiar to vessel prepared by embodiment 1 welds the weld seam metallurgical microscopic to be formed；
Fig. 3 is the skull shape appearance figure that falls off after fluorine aluminium titanium-type fysed flux peculiar to vessel prepared by embodiment 1 welds.
Specific embodiment
In following embodiment:
The low-carbon type welding wire model H08Mn2SiA of use；
The fluorine aluminium titanium-type fysed flux peculiar to vessel of preparation welds the specific welding process to form connector are as follows: uses mariages submerged arc
Weldering, solder flux heap a height of 40mm, preceding silk direct current 850A/32V, rear silk exchange 625A/36V, speed of welding 50cmmin- 1；
The weld metal oxygen content obtained in Examples 1 to 6 reaches 200~500ppm.
Embodiment 1
A kind of fluorine aluminium titanium-type fysed flux peculiar to vessel, by mass percentage containing ingredient are as follows: CaF2: 60%, Al2O3:
22%, TiO2: 18%.
The preparation method of fluorine aluminium titanium-type fysed flux peculiar to vessel of the invention, includes the following steps:
Step 1, melting:
(1) proportion for pressing fluorine aluminium titanium-type fysed flux peculiar to vessel, weighs each component raw materials of Ca F2、Al2O3、TiO2, by each raw material
It is put into mixing equipment, stirs by mixing；
(2) by uniformly mixed raw material, 25min is kept the temperature after melting in graphite crucible, smelted product is made；Wherein, it melts
Refining temperature is 1490 DEG C；
(3) by smelted product water quenching, semi-finished product are made；
Step 2, high-temperature roasting:
By semi-finished product Muffle furnace in 800 DEG C of roasting 2h, product of roasting is made, is eliminated in solder flux by high-temperature roasting
Carbon dust；
Step 3, it is crushed:
Product of roasting is broken, sieving, granularity are that the particle of 10~40 mesh is fluorine aluminium titanium-type fysed flux peculiar to vessel.
Fluorine aluminium titanium-type fysed flux peculiar to vessel manufactured in the present embodiment, before welding using drying box at 200 DEG C, dry 2h；
Then, the fysed flux cooperation low-carbon type welding wire after drying welds EH36 grades of ship steels, postwelding is resulting to be connect
Head performance indicator is as follows: tensile strength 688MPa, and (- 40 DEG C) of low-temperature impact work are 69J, Vickers hardness 238Hv, welding
Joint cutting section optical microscopy map as shown in Figure 1, weld seam metallurgical microscopic as shown in Fig. 2, falling off skull shape appearance figure after welding
As shown in Figure 3；Composition of weld line is uniform, and welding bead is smooth, and deoxidation is good, the acicular ferrite in the weld structure of formation
Volume fraction is 39.41%.
Comparative example 1
Fysed flux ingredient is TiO with embodiment 1, difference2Content is 30%, CaF2Content is 48%.
Step 1, melting:
(1) according to the ratio, each component raw materials of Ca F is weighed2、Al2O3、TiO2, each raw material is put into mixing equipment, by stirring
It mixes uniformly mixed；
(2) by uniformly mixed raw material, 20min is kept the temperature after melting in graphite crucible, smelted product is made；Wherein, it melts
Refining temperature is 1500 DEG C；
(3) by smelted product water quenching, semi-finished product are made；
Step 2, high-temperature roasting:
By semi-finished product Muffle furnace in 800 DEG C of roasting 2h, product of roasting is made, is eliminated in solder flux by high-temperature roasting
Carbon dust；
Step 3, it is crushed:
Product of roasting is broken, sieving, granularity are the particle of 10~40 mesh, and fysed flux is made.
The fysed flux uses drying box at 200 DEG C before welding, dry 2h；Then, the fysed flux after drying is matched
It closes low-carbon type welding wire to weld EH36 grades of ship steels, the resulting property of welded joint index of postwelding is as follows: tensile strength is
604MPa, (- 40 DEG C) of low-temperature impact work are 53J, and Vickers hardness 214Hv, composition of weld line is uniform, and welding bead is smooth, deoxy performance
Well.
Embodiment 2
A kind of fluorine aluminium titanium-type fysed flux peculiar to vessel, by mass percentage containing ingredient are as follows: CaF2: 61%, Al2O3:
20%, TiO2: 19%.
The preparation method of fluorine aluminium titanium-type fysed flux peculiar to vessel of the invention, includes the following steps:
Step 1, melting:
(1) proportion for pressing fluorine aluminium titanium-type fysed flux peculiar to vessel, weighs each component raw materials of Ca F2、Al2O3、TiO2, by each raw material
It is put into mixing equipment, stirs by mixing；
(2) by uniformly mixed raw material, 20min is kept the temperature after melting in graphite crucible, smelted product is made；Wherein, it melts
Refining temperature is 1500 DEG C；
(3) by smelted product water quenching, semi-finished product are made；
Step 2, high-temperature roasting:
By semi-finished product Muffle furnace in 800 DEG C of roasting 2h, product of roasting is made, is eliminated in solder flux by high-temperature roasting
Carbon dust；
Step 3, it is crushed:
Product of roasting is broken, sieving, granularity are that the particle of 10~40 mesh is fluorine aluminium titanium-type fysed flux peculiar to vessel.
Fluorine aluminium titanium-type fysed flux peculiar to vessel manufactured in the present embodiment, before welding using drying box at 200 DEG C, dry 2h；
Then, the fysed flux cooperation low-carbon type welding wire after drying welds EH36 grades of ship steels, postwelding is resulting to be connect
Head performance indicator is as follows: tensile strength 708MPa, and (- 40 DEG C) of low-temperature impact work are 71J, Vickers hardness 235Hv, weld seam
Ingredient is uniform, and welding bead is smooth, and deoxy performance is good, and the acicular ferrite volume fraction in the weld structure of formation is
40.62%.
Comparative example 2
Fysed flux is TiO with embodiment 2, difference2Content is 40%, CaF2Content is 40%.
Step 1, melting:
(1) according to the ratio, each component raw materials of Ca F is weighed2、Al2O3、TiO2, each raw material is put into mixing equipment, by stirring
It mixes uniformly mixed；
(2) by uniformly mixed raw material, 20min is kept the temperature after melting in graphite crucible, smelted product is made；Wherein, it melts
Refining temperature is 1500 DEG C；
(3) by smelted product water quenching, semi-finished product are made；
Step 2, high-temperature roasting:
By semi-finished product Muffle furnace in 800 DEG C of roasting 2h, product of roasting is made, is eliminated in solder flux by high-temperature roasting
Carbon dust；
Step 3, it is crushed:
Product of roasting is broken, sieving, granularity are the particle of 10~40 mesh, obtain fysed flux.
The fysed flux, before welding using drying box at 200 DEG C, dry 2h；Then, the fysed flux after drying is matched
It closes low-carbon type welding wire to weld EH36 grades of ship steels, the resulting property of welded joint index of postwelding is as follows: tensile strength is
598MPa, (- 40 DEG C) of low-temperature impact work are 57J, and Vickers hardness 226Hv, composition of weld line is uniform, and welding bead is smooth, deoxy performance
Well.
Embodiment 3
A kind of fluorine aluminium titanium-type fysed flux peculiar to vessel, by mass percentage containing ingredient are as follows: CaF2: 60%, Al2O3:
20%, TiO2: 20%.
The preparation method of fluorine aluminium titanium-type fysed flux peculiar to vessel of the invention, includes the following steps:
Step 1, melting:
(1) proportion for pressing fluorine aluminium titanium-type fysed flux peculiar to vessel, weighs each component raw materials of Ca F2、Al2O3、TiO2, by each raw material
It is put into mixing equipment, stirs by mixing；
(2) by uniformly mixed raw material, 15min is kept the temperature after melting in graphite crucible, smelted product is made；Wherein, it melts
Refining temperature is 1520 DEG C；
(3) by smelted product water quenching, semi-finished product are made；
Step 2, high-temperature roasting:
By semi-finished product Muffle furnace in 800 DEG C of roasting 2h, product of roasting is made, is eliminated in solder flux by high-temperature roasting
Carbon dust；
Step 3, it is crushed:
Product of roasting is broken, sieving, granularity are that the particle of 10~40 mesh is fluorine aluminium titanium-type fysed flux peculiar to vessel.
Fluorine aluminium titanium-type fysed flux peculiar to vessel manufactured in the present embodiment dries 2h 200 using drying box before welding；So
Afterwards, the fysed flux cooperation low-carbon type welding wire after drying welds EH36 grades of ship steels, the resulting welding point of postwelding
Performance indicator is as follows: tensile strength 722MPa, (- 40 DEG C) of low-temperature impact work be 74J, Vickers hardness 220Hv, weld seam at
Divide uniformly, welding bead is smooth, and the acicular ferrite volume fraction in the weld structure of formation is 41.87%.
Embodiment 4
A kind of fluorine aluminium titanium-type fysed flux peculiar to vessel, by mass percentage containing ingredient are as follows: CaF2: 60%, Al2O3:
18%, TiO2: 22%.
The preparation method of fluorine aluminium titanium-type fysed flux peculiar to vessel of the invention, includes the following steps:
Step 1, melting:
(1) proportion for pressing fluorine aluminium titanium-type fysed flux peculiar to vessel, weighs each component raw materials of Ca F2、Al2O3、TiO2, by each raw material
It is put into mixing equipment, stirs by mixing；
(2) by uniformly mixed raw material, 10min is kept the temperature after melting in graphite crucible, smelted product is made；Wherein, it melts
Refining temperature is 1540 DEG C；
(3) by smelted product water quenching, semi-finished product are made；
Step 2, high-temperature roasting:
By semi-finished product Muffle furnace in 800 DEG C of roasting 2h, product of roasting is made, is eliminated in solder flux by high-temperature roasting
Carbon dust；
Step 3, it is crushed:
Product of roasting is broken, sieving, granularity are that the particle of 10~40 mesh is fluorine aluminium titanium-type fysed flux peculiar to vessel.
Fluorine aluminium titanium-type fysed flux peculiar to vessel manufactured in the present embodiment, before welding using drying box at 200 DEG C, dry 2h；
Then, the fysed flux cooperation low-carbon type welding wire after drying welds EH36 grades of ship steels, postwelding is resulting to be connect
Head performance indicator is as follows: tensile strength 735MPa, and (- 40 DEG C) of low-temperature impact work are 75J, Vickers hardness 215Hv, weld seam
Ingredient is uniform, and welding bead is smooth, and the removability of slag is good, and the acicular ferrite volume fraction in the weld structure of formation is
42.13%.
Embodiment 5
A kind of fluorine aluminium titanium-type fysed flux peculiar to vessel, by mass percentage containing ingredient are as follows: CaF2: 61%, Al2O3:
18%, TiO2: 21%.
The preparation method of fluorine aluminium titanium-type fysed flux peculiar to vessel of the invention, includes the following steps:
Step 1, melting:
(1) proportion for pressing fluorine aluminium titanium-type fysed flux peculiar to vessel, weighs each component raw materials of Ca F2、Al2O3、TiO2, by each raw material
It is put into mixing equipment, stirs by mixing；
(2) by uniformly mixed raw material, 30min is kept the temperature after melting in graphite crucible, smelted product is made；Wherein, it melts
Refining temperature is 1480 DEG C；
(3) by smelted product water quenching, semi-finished product are made；
Step 2, high-temperature roasting:
By semi-finished product Muffle furnace in 800 DEG C of roasting 2h, product of roasting is made, is eliminated in solder flux by high-temperature roasting
Carbon dust；
Step 3, it is crushed:
Product of roasting is broken, sieving, granularity are that the particle of 10~40 mesh is fluorine aluminium titanium-type fysed flux peculiar to vessel.
Fluorine aluminium titanium-type fysed flux peculiar to vessel manufactured in the present embodiment, before welding using drying box at 200 DEG C, dry 2h；
Then, the fysed flux cooperation low-carbon type welding wire after drying welds EH36 grades of ship steels, postwelding is resulting to be connect
Head performance indicator is as follows: tensile strength 737MPa, and (- 40 DEG C) of low-temperature impact work are 73J, Vickers hardness 228Hv, weld seam
Ingredient is uniform, and welding bead is smooth, and the removability of slag is good, and the acicular ferrite volume fraction in the weld structure of formation is
41.55%.
Claims (4)
1. a kind of fluorine aluminium titanium-type fysed flux peculiar to vessel, which is characterized in that it contains ingredient by mass percentage are as follows: CaF2: 58~
62%, Al2O3: 18~22%, TiO2: 18~22%.
2. fluorine aluminium titanium-type fysed flux peculiar to vessel according to claim 1, which is characterized in that the fluorine aluminium titanium-type melting peculiar to vessel
Solder flux is welded, and the acicular ferrite volume fraction in weld structure is 39.41%~42.13%, the resulting weldering of postwelding
The tensile strength of connector is 675~775MPa, and Vickers hardness is 215~238Hv, and -40 DEG C of ballistic works are 69~76J.
3. fluorine aluminium titanium-type fysed flux peculiar to vessel according to claim 2, which is characterized in that the welding point obtains process
It is as follows:
(1) by fluorine aluminium titanium-type fysed flux peculiar to vessel at 200~400 DEG C, 1~3h is dried；
(2) fluorine aluminium titanium-type fysed flux peculiar to vessel after drying cooperation low-carbon type welding wire welds low-carbon and low-alloy ship steel,
Obtain welding point, wherein the low-carbon and low-alloy ship steel is EH36 grades of ship steels, and low-carbon type welding wire is H08Mn2SiA.
4. the preparation method of fluorine aluminium titanium-type fysed flux peculiar to vessel described in claim 1, which comprises the steps of:
Step 1, melting:
(1) proportion for pressing fluorine aluminium titanium-type fysed flux peculiar to vessel, weighs each component raw materials of Ca F2、Al2O3、TiO2, each raw material is mixed
Uniformly；
(2) by uniformly mixed raw material, 10~30min is kept the temperature after melting, and smelted product is made；Wherein, smelting temperature its 1480
~1540 DEG C；
(3) by smelted product water quenching, semi-finished product are made；
Step 2, high-temperature roasting:
By semi-finished product in 700~750 DEG C of 2~3h of roasting, product of roasting is made；
Step 3, it is crushed:
Product of roasting is broken, sieving, granularity are the particle of 10~40 mesh, fluorine aluminium titanium-type fysed flux as peculiar to vessel.
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| CN201910575359.4A CN110293336A (en) | 2019-06-28 | 2019-06-28 | A kind of fluorine aluminium titanium-type fysed flux peculiar to vessel and preparation method thereof |
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| CN201910575359.4A CN110293336A (en) | 2019-06-28 | 2019-06-28 | A kind of fluorine aluminium titanium-type fysed flux peculiar to vessel and preparation method thereof |
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| CN108788538A (en) * | 2018-06-30 | 2018-11-13 | 东北大学 | One kind middle high fluorine-type sintered flux of titanium peculiar to vessel and preparation method thereof |
| CN108788529A (en) * | 2018-06-30 | 2018-11-13 | 东北大学 | A kind of high alkalinity fluorine alkaline type sintered flux peculiar to vessel and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846577A (en) * | 2014-03-26 | 2014-06-11 | 锦州天鹅焊材股份有限公司 | Soldering flux for submerged arc soldering of X100 pipeline steel and preparation method thereof |
| CN106041371A (en) * | 2016-07-04 | 2016-10-26 | 常州大学 | Smelting flux for submerged-arc welding and preparation method and application of smelting flux |
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