CN114571135B - Self-protection flux-cored wire for low-temperature steel - Google Patents
Self-protection flux-cored wire for low-temperature steel Download PDFInfo
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- CN114571135B CN114571135B CN202210371704.4A CN202210371704A CN114571135B CN 114571135 B CN114571135 B CN 114571135B CN 202210371704 A CN202210371704 A CN 202210371704A CN 114571135 B CN114571135 B CN 114571135B
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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
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
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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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0266—Rods, electrodes, wires flux-cored
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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
- B23K35/406—Filled tubular wire or rods
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a self-protection flux-cored wire for low-temperature steel, which comprises a steel belt and medicinal powder filled in the steel belt, wherein the flux-cored wire is prepared by mixing, by weight, 30% -31% of barium fluoride, 8% -12% of ferrosilicon, 0.4% -0.6% of electrolytic manganese, 4% -6% of ferrosilicon, 12% -14% of aluminum magnesium powder, 1% -3% of graphite, 9% -11% of aluminum powder, 2% -4% of marble, 5% -7% of ferromolybdenum, 14% -16% of ferrochromium and the balance of iron powder; the flux-cored wire prepared by adding barium fluoride, ferrosilicon, electrolytic manganese, ferrosilicon, aluminum magnesium powder, graphite, aluminum powder, marble, ferromolybdenum, ferrochrome and iron powder has the advantages of small splashing, good weld joint forming, excellent deslagging, high weld joint strength which can still reach more than 49J at a temperature of minus 60 ℃, and suitability for outdoor welding and operation requirements in a low-temperature minus 60 ℃ environment of the south and north poles; the drying furnace designed in the process of manufacturing the flux-cored wire is simple in structure, convenient to use and provided with the drying component, the drying efficiency is improved, and the provided rotating component enables raw materials to be dried uniformly and perfectly.
Description
Technical Field
The invention relates to the technical field of flux-cored wires, in particular to a self-protection flux-cored wire for low-temperature steel.
Background
The flux-cored wires are also called as powder-cored wires and tubular wires, and are divided into two main types, namely gas-filling protection and non-gas-filling protection; the surface of the flux-cored wire is the same as that of the solid wire, and is made of low carbon steel or low alloy steel with better plasticity; firstly rolling a steel belt into a U-shaped section shape, then filling welding powder prepared according to the dosage into the U-shaped steel belt, rolling by a rolling mill, and finally drawing to prepare flux-cored wires with different specifications; however, the existing flux-cored wire is not suitable for low-temperature areas, can not meet the welding and operation requirements in a low-temperature environment, has poor welding process performance, is mainly characterized by large splashing and poor deslagging performance, and is not worth being widely popularized and applied.
Disclosure of Invention
The invention aims to provide a self-protection flux-cored wire for low-temperature steel, which is prepared by adding barium fluoride, ferrosilicon, electrolytic manganese, silicomanganese, aluminum magnesium powder, graphite, aluminum powder, marble, ferromolybdenum, ferrochromium and iron powder, has the advantages of small splashing, good weld joint forming, excellent deslagging, high weld joint strength which can still reach more than 49J at a temperature of-60 ℃ and is suitable for outdoor welding and operation requirements in a low-60 ℃ environment of south and north poles; the drying furnace designed in the process of manufacturing the flux-cored wire is simple in structure, convenient to use and provided with the drying component, the drying efficiency is improved, and the provided rotating component enables raw materials to be dried uniformly and perfectly.
The aim of the invention can be achieved by the following technical scheme:
the self-protection flux-cored wire for the low-temperature steel comprises a steel belt and medicinal powder filled in the steel belt, wherein the flux core is prepared by mixing, by weight, 30% -31% of barium fluoride, 8% -12% of ferrosilicon, 0.4% -0.6% of electrolytic manganese, 4% -6% of ferrosilicon, 12% -14% of aluminum magnesium powder, 1% -3% of graphite, 9% -11% of aluminum powder, 2% -4% of marble, 5% -7% of ferromolybdenum, 14% -16% of ferrochromium and the balance of iron powder;
as a further scheme of the invention: the weight percentage of molybdenum in the ferromolybdenum is 25% -35%, the weight percentage of aluminum in the aluminum magnesium powder is 45% -50%, the weight percentage of chromium in the ferrochromium is 50% -55%, and the weight percentage of silicon in the ferrosilicon is 32% -40%.
As a further scheme of the invention: the filling rate of the flux-cored wire is 23% -26%.
As a further scheme of the invention: the steel strip had a composition of 304L and a thickness X width of 0.35mm X10 mm.
The preparation method of the self-protection flux-cored wire for the low-temperature steel comprises the following specific steps:
firstly, respectively weighing 30-31% of barium fluoride, 8-12% of ferrosilicon, 0.4-0.6% of electrolytic manganese, 4-6% of ferrosilicon, 12-14% of aluminum magnesium powder, 1-3% of graphite, 9-11% of aluminum powder, 2-4% of marble, 5-7% of ferromolybdenum, 14-16% of ferrochromium and the balance of iron powder according to mass percentage, wherein the sum of the mass percentages of the components is 100%;
step two, weighing barium fluoride, electrolytic manganese, silicomanganese, graphite, aluminum magnesium powder and marble, adding a water glass binder, uniformly mixing, placing in a heating furnace, sintering, discharging, sieving, screening the powder with the granularity less than or equal to 55 meshes to obtain mixed powder A, weighing aluminum powder, marble, ferromolybdenum, ferrochrome and iron powder, stirring and mixing the powder A, wherein the stirring speed is 750r/min, the time is 20min, and drying the powder in the drying furnace after uniform mixing to obtain flux-cored powder;
placing the steel belt on a belt unreeling machine, rewinding the steel belt, cleaning the steel belt through a forming machine, rolling the steel belt into a U-shaped groove, adding the powder obtained in the second step into the U-shaped groove, controlling the filling rate of the powder core to be 23% -26%, sealing the steel belt by adopting the forming machine, reducing the diameter to 2.8mm to obtain a welding wire semi-finished product, then entering the next working procedure, drawing, reducing the diameter of the semi-finished product welding wire by drawing through a wire drawing machine, and reducing the drawing diameter to 1.6mm to obtain the flux-cored welding wire;
and fourthly, coiling the finished welding wire layer, packaging and warehousing.
As a further scheme of the invention: in the second step, the sintering temperature is 450-600 ℃ and the sintering time is 1.5-3h.
As a further scheme of the invention: in the second step, the drying temperature is 150-200 ℃ and the drying time is 2.5h.
As a further scheme of the invention: the drying furnace comprises a heat insulation roller, a drying cylinder, a material pipe, a valve, heating plates, a drying assembly, a rotating assembly, a blanking assembly, a bottom plate and a convex plate, wherein the drying cylinder is welded on the inner wall of one side of the heat insulation roller;
the rotary component comprises an annular support, an annular groove, an annular sliding block, a rotary motor, a belt wheel, a belt and a belt groove, wherein two annular supports are sleeved on the outer wall of the heat-insulating roller, the annular groove is formed in the inner wall of the annular support, the annular sliding block is welded on the outer wall of the heat-insulating roller corresponding to the annular groove, the outer wall of the annular sliding block is attached to the inner wall of the annular groove, the rotary motor is installed on the outer wall of one side of the annular support, the belt wheel is sleeved on one end of an output shaft of the rotary motor, the belt is sleeved on the outer wall of the belt wheel, the belt groove is formed in the outer wall of the heat-insulating roller corresponding to the belt, the other end of the belt is sleeved in the belt groove, and two convex plates are fixed on the inner wall of the drying roller.
As a further scheme of the invention: the drying assembly comprises a spiral pipe, a blowing hole, a bearing sleeve, a blower and a connecting steel pipe, wherein the spiral pipe is arranged on the outer wall of the drying cylinder, the spiral pipe penetrates through one end of the outer wall of the heat-insulating roller, the bearing sleeve is rotatably arranged on the other end of the spiral pipe, the connecting steel pipe is inserted into the other end of the bearing sleeve, the connecting steel pipe is rotatably connected with the bearing sleeve, the blower is correspondingly arranged on one side of the annular support, and an air outlet of the blower is connected with one end of the connecting steel pipe.
As a further scheme of the invention: the blanking assembly comprises a first supporting plate, a second supporting plate, a third supporting plate, a fixing plate, a moving groove, a moving rod, a hydraulic cylinder and a lantern ring, wherein the welding machine is arranged on the outer wall of the bottom end of the annular support, the two first supporting plates are close to the bottom end of a material pipe, the third supporting plate is rotatably arranged on the bottom end of the first supporting plate, the second supporting plate is rotatably arranged on the bottom end of the other two first supporting plates, a bottom plate is welded on the bottom end between the second supporting plates, the moving rod is rotatably arranged on the outer wall between the third supporting plates, the lantern ring is sleeved on the outer wall of the middle part of the moving rod, the hydraulic cylinder is fixed on the outer wall of the top end of the lantern ring, one end of the telescopic shaft of the hydraulic cylinder is fixed on the outer wall of the lantern ring, the fixing plate is welded on the outer wall of the top end of the bottom plate, the corresponding moving rod on the outer wall of the fixing plate is communicated with the moving groove, and the outer wall of the moving rod is attached to the inner wall of the moving groove.
The invention has the beneficial effects that: the flux-cored wire prepared by adding barium fluoride, ferrosilicon, electrolytic manganese, ferrosilicon, aluminum magnesium powder, graphite, aluminum powder, marble, ferromolybdenum, ferrochrome and iron powder has the advantages of small splashing, good weld joint forming, excellent deslagging, high weld joint strength which can still reach more than 49J at a temperature of minus 60 ℃, and suitability for outdoor welding and operation requirements in a low-temperature minus 60 ℃ environment of the south and north poles; the utility model provides a drying furnace of in-process design of preparation flux cored wire, the steam generator is simple in structure, and a load-bearing plate is convenient for, the blast hole, the cooperation of bearing housing, air-blower and connecting steel pipe, be convenient for carry out make full use of to the heat of hot plate, the gas through the spiral pipe heats, blow to the raw materials of a stoving section of thick bamboo, drying efficiency and effect have been improved, the rotating assembly of setting, through annular support, the ring channel, the annular slider, rotating electrical machines, the band pulley, belt and grooved's cooperation, be convenient for rotate a stoving section of thick bamboo, thereby overturn the raw materials, make the comparatively even of raw materials stoving, the unloading subassembly of setting, through first backup pad, the second backup pad, the third backup pad, the fixed plate, the movable groove, the movable rod, the cooperation of pneumatic cylinder and lantern ring, when the unloading, can make the material pipe, thermal-insulated roller and stoving section of thick bamboo slope, be convenient for the ejection of compact, be worth extensively popularizing and applying.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
FIG. 1 is a schematic diagram showing a front perspective view of a drying oven according to the present invention;
FIG. 2 is a schematic side view of a drying oven according to the present invention;
FIG. 3 is a partial front sectional view of the drying oven of the present invention;
in the figure: 1. a heat-insulating roller; 2. a drying cylinder; 3. a material pipe; 4. a valve; 5. a heating plate; 6. a drying assembly; 7. a rotating assembly; 8. a blanking assembly; 9. a bottom plate; 10. a convex plate; 61. a spiral tube; 62. a blowing hole; 63. a bearing sleeve; 64. a blower; 65. connecting steel pipes; 71. an annular support; 72. an annular groove; 73. an annular slide block; 74. a rotating electric machine; 75. a belt wheel; 76. a belt; 77. a groove; 81. a first support plate; 82. a second support plate; 83. a third support plate; 84. a fixing plate; 85. a moving groove; 86. a moving rod; 87. a hydraulic cylinder; 88. a collar.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
1-3, a self-protection flux-cored wire for low-temperature steel comprises a steel belt and medicinal powder filled in the steel belt, wherein the flux-cored wire is prepared by mixing, by weight, 30.5% of barium fluoride, 10% of ferrosilicon, 0.5% of electrolytic manganese, 5% of ferrosilicon, 13% of aluminum magnesium powder, 2% of graphite, 10% of aluminum powder, 3% of marble, 6% of ferromolybdenum, 15% of ferrochromium and 5% of iron powder; the weight percentage of molybdenum in ferromolybdenum is 25% -35%, the weight percentage of aluminum in aluminum magnesium powder is 45% -50%, the weight percentage of chromium in ferrochromium is 50% -55%, and the weight percentage of silicon in ferrosilicon is 32% -40%; the steel strip has a composition of 304L, and the thickness multiplied by the width of the steel strip is 0.35mm multiplied by 10mm;
the preparation method of the self-protection flux-cored wire for the low-temperature steel comprises the following specific steps:
firstly, respectively weighing barium fluoride, ferrosilicon, electrolytic manganese, silicomanganese, aluminum magnesium powder, graphite, aluminum powder, marble, ferromolybdenum, ferrochrome and the balance of iron powder according to mass percentage, wherein the sum of the mass percentages of the components is 100%;
step two, weighing barium fluoride, electrolytic manganese, silicomanganese, graphite, aluminum magnesium powder and marble, adding a water glass binder, uniformly mixing, placing in a heating furnace, sintering, discharging, sieving, screening the powder with the granularity less than or equal to 55 meshes to obtain mixed powder A, weighing aluminum powder, marble, ferromolybdenum, ferrochrome and iron powder, stirring and mixing the powder A, wherein the stirring speed is 750r/min, the time is 20min, and drying the powder in the drying furnace after uniform mixing to obtain flux-cored powder; the drying furnace comprises a heat insulation roller 1, a drying cylinder 2, a material pipe 3, a valve 4, a heating plate 5, a drying assembly 6, a rotating assembly 7, a blanking assembly 8, a bottom plate 9 and a convex plate 10, wherein the drying cylinder 2 is welded on the inner wall of one side of the heat insulation roller 1, the material pipe 3 is correspondingly welded on the outer wall of one side of the heat insulation roller 1 in a penetrating manner, the material pipe 3 is communicated with the drying cylinder 2, the valve 4 is arranged on the outer wall of the material pipe 3, a plurality of heating plates 5 are arranged on the inner wall of the heat insulation roller 1, the drying assembly 6 is arranged on the outer wall of the drying cylinder 2, the rotating assembly 7 is arranged on the outer wall of the heat insulation roller 1, the blanking assembly 8 is arranged on the outer wall of the bottom end of the rotating assembly 7, when the material pipe 3 is discharged into the drying cylinder 2, the valve 4 is opened, raw materials are put into the drying cylinder 2 through the material pipe 3, and when the raw materials are discharged, the material port of the material pipe 3 is rotated to the downward direction;
the rotating assembly 7 comprises an annular support 71, an annular groove 72, an annular sliding block 73, a rotating motor 74, a belt pulley 75, a belt 76 and a belt groove 77, wherein two annular supports 71 are sleeved on the outer wall of the heat insulation roller 1, the annular groove 72 is formed in the inner wall of the annular support 71, the annular sliding block 73 is welded on the outer wall of the heat insulation roller 1 corresponding to the annular groove 72, the outer wall of the annular sliding block 73 is attached to the inner wall of the annular groove 72, the rotating motor 74 is installed on the outer wall of one side of the annular support 71, the belt pulley 75 is sleeved on one end of an output shaft of the rotating motor 74, the belt 76 is sleeved on the outer wall of the belt pulley 75, the belt groove 77 is formed in the outer wall of the heat insulation roller 1 corresponding to the belt 76, the other end of the belt 76 is sleeved in the belt groove 77, two convex plates 10 are fixed on the inner wall of the drying roller 2, the raw materials of the drying roller 2 are convenient to dry, the drying effect is relatively good, the working efficiency is improved, the rotating motor 74 drives the belt pulley 75 to rotate, the belt pulley 75 is matched with the belt groove 77, drives the heat insulation roller 1 and the drying roller 2 to rotate through the cooperation of the belt groove 77, and the heating plate 5 is matched to heat the raw materials, so that the raw materials are heated;
the drying assembly 6 comprises a spiral tube 61, a blowing hole 62, a bearing sleeve 63, a blower 64 and a connecting steel tube 65, wherein the spiral tube 61 is arranged on the outer wall of the drying cylinder 2, which is positioned in the heat insulation roller 1, one end of the spiral tube 61, which passes through the outer wall of the heat insulation roller 1, is rotatably provided with the bearing sleeve 63, the other end of the bearing sleeve 63 is inserted with the connecting steel tube 65, the connecting steel tube 65 is rotatably connected with the bearing sleeve 63, one side of the annular support 71 is correspondingly provided with the blower 64, the air outlet of the blower 64 is connected with one end of the connecting steel tube 65, raw materials in the drying cylinder 2 are further dried, the drying efficiency is further improved, the blower 64 is started, wind generated by the blower 64 is blown into the drying cylinder 2 from the blowing hole 62 through the connecting steel tube 65 and the spiral tube 61, the drying efficiency is improved, and the blown wind is hot wind through the heating of the heating plate 5, so that the drying efficiency is further improved;
the blanking assembly 8 comprises a first supporting plate 81, a second supporting plate 82, a third supporting plate 83, a fixed plate 84, a moving groove 85, a moving rod 86, a hydraulic cylinder 87 and a lantern ring 88, wherein the welding machine is arranged on the outer wall of the bottom end of the annular support 71, the two first supporting plates 81 are close to the bottom end of a material pipe 3, the third supporting plate 83 is rotatably arranged on the bottom end of the other two first supporting plates 81, the second supporting plate 82 is rotatably arranged on the bottom end of the other two first supporting plates 81, a bottom plate 9 is welded on the bottom end between the second supporting plates 82, a moving rod 86 is rotatably arranged on the outer wall between the third supporting plates 83, the lantern ring 88 is sleeved on the middle outer wall of the moving rod 86, the bottom plate 9 is fixedly provided with the hydraulic cylinder 87 on the outer wall of the top end of one side of the lantern ring 88, one end of the telescopic shaft of the hydraulic cylinder 87 is fixedly arranged on the outer wall of the lantern ring 88, the bottom plate 9 is positioned on the outer wall of the top end of the two sides of the third supporting plates 83, the fixed plate 84 is welded on the outer wall of the corresponding moving rod 86, the moving groove 85 is correspondingly arranged on the outer wall of the moving plate 84, the outer wall of the moving rod 86 is rotatably connected with the inner wall of the moving groove 85, the moving rod 86 is convenient to operate, the blanking is convenient to install, the bottom plate 87 is convenient to start, the bottom plate is convenient to use, the practical 86 is convenient to start, the hydraulic cylinder is convenient to move, the cylinder 86 is driven by the cylinder 86 to move and the cylinder 82 is driven by the cylinder 82 to move through the lantern ring 88, and the cylinder 2, and is convenient to move 3 to move by the cylinder 2 and move and has a cylinder 3 to move through the cylinder 3;
placing the steel belt on a belt unreeling machine, rewinding the steel belt, cleaning the steel belt through a forming machine, rolling the steel belt into a U-shaped groove, adding the powder obtained in the second step into the U-shaped groove, controlling the filling rate of the powder core to be 23% -26%, sealing the steel belt by adopting the forming machine, reducing the diameter to 2.8mm to obtain a welding wire semi-finished product, then entering the next working procedure, drawing, reducing the diameter of the semi-finished product welding wire by drawing through a wire drawing machine, and reducing the drawing diameter to 1.6mm to obtain the flux-cored welding wire;
and fourthly, coiling the finished welding wire layer, packaging and warehousing.
Example 2
1-3, a self-protection flux-cored wire for low-temperature steel comprises a steel belt and medicinal powder filled in the steel belt, wherein the flux-cored wire is prepared by mixing, by weight, 30% of barium fluoride, 12% of ferrosilicon, 0.4% of electrolytic manganese, 4% of ferrosilicon, 12% of aluminum magnesium powder, 3% of graphite, 11% of aluminum powder, 4% of marble, 7% of ferromolybdenum, 14% of ferrochromium and 2.6% of iron powder; the weight percentage of molybdenum in ferromolybdenum is 25% -35%, the weight percentage of aluminum in aluminum magnesium powder is 45% -50%, the weight percentage of chromium in ferrochromium is 50% -55%, and the weight percentage of silicon in ferrosilicon is 32% -40%; the steel strip has a composition of 304L, and the thickness multiplied by the width of the steel strip is 0.35mm multiplied by 10mm;
the preparation method of the self-protection flux-cored wire for the low-temperature steel comprises the following specific steps:
firstly, respectively weighing barium fluoride, ferrosilicon, electrolytic manganese, silicomanganese, aluminum magnesium powder, graphite, aluminum powder, marble, ferromolybdenum, ferrochrome and the balance of iron powder according to mass percentage, wherein the sum of the mass percentages of the components is 100%;
step two, weighing barium fluoride, electrolytic manganese, silicomanganese, graphite, aluminum magnesium powder and marble, adding a water glass binder, uniformly mixing, placing in a heating furnace, sintering, discharging, sieving, screening the powder with the granularity less than or equal to 55 meshes to obtain mixed powder A, weighing aluminum powder, marble, ferromolybdenum, ferrochrome and iron powder, stirring and mixing the powder A, wherein the stirring speed is 750r/min, the time is 20min, and drying the powder in the drying furnace after uniform mixing to obtain flux-cored powder; the drying furnace comprises a heat insulation roller 1, a drying cylinder 2, a material pipe 3, a valve 4, a heating plate 5, a drying assembly 6, a rotating assembly 7, a blanking assembly 8, a bottom plate 9 and a convex plate 10, wherein the drying cylinder 2 is welded on the inner wall of one side of the heat insulation roller 1, the material pipe 3 is correspondingly welded on the outer wall of one side of the heat insulation roller 1 in a penetrating manner, the material pipe 3 is communicated with the drying cylinder 2, the valve 4 is arranged on the outer wall of the material pipe 3, a plurality of heating plates 5 are arranged on the inner wall of the heat insulation roller 1, the drying assembly 6 is arranged on the outer wall of the drying cylinder 2, the rotating assembly 7 is arranged on the outer wall of the heat insulation roller 1, the blanking assembly 8 is arranged on the outer wall of the bottom end of the rotating assembly 7, when the material pipe 3 is discharged into the drying cylinder 2, the valve 4 is opened, raw materials are put into the drying cylinder 2 through the material pipe 3, and when the raw materials are discharged, the material port of the material pipe 3 is rotated to the downward direction;
the rotating assembly 7 comprises an annular support 71, an annular groove 72, an annular sliding block 73, a rotating motor 74, a belt pulley 75, a belt 76 and a belt groove 77, wherein two annular supports 71 are sleeved on the outer wall of the heat insulation roller 1, the annular groove 72 is formed in the inner wall of the annular support 71, the annular sliding block 73 is welded on the outer wall of the heat insulation roller 1 corresponding to the annular groove 72, the outer wall of the annular sliding block 73 is attached to the inner wall of the annular groove 72, the rotating motor 74 is installed on the outer wall of one side of the annular support 71, the belt pulley 75 is sleeved on one end of an output shaft of the rotating motor 74, the belt 76 is sleeved on the outer wall of the belt pulley 75, the belt groove 77 is formed in the outer wall of the heat insulation roller 1 corresponding to the belt 76, the other end of the belt 76 is sleeved in the belt groove 77, two convex plates 10 are fixed on the inner wall of the drying roller 2, the raw materials of the drying roller 2 are convenient to dry, the drying effect is relatively good, the working efficiency is improved, the rotating motor 74 drives the belt pulley 75 to rotate, the belt pulley 75 is matched with the belt groove 77, drives the heat insulation roller 1 and the drying roller 2 to rotate through the cooperation of the belt groove 77, and the heating plate 5 is matched to heat the raw materials, so that the raw materials are heated;
the drying assembly 6 comprises a spiral tube 61, a blowing hole 62, a bearing sleeve 63, a blower 64 and a connecting steel tube 65, wherein the spiral tube 61 is arranged on the outer wall of the drying cylinder 2, which is positioned in the heat insulation roller 1, one end of the spiral tube 61, which passes through the outer wall of the heat insulation roller 1, is rotatably provided with the bearing sleeve 63, the other end of the bearing sleeve 63 is inserted with the connecting steel tube 65, the connecting steel tube 65 is rotatably connected with the bearing sleeve 63, one side of the annular support 71 is correspondingly provided with the blower 64, the air outlet of the blower 64 is connected with one end of the connecting steel tube 65, raw materials in the drying cylinder 2 are further dried, the drying efficiency is further improved, the blower 64 is started, wind generated by the blower 64 is blown into the drying cylinder 2 from the blowing hole 62 through the connecting steel tube 65 and the spiral tube 61, the drying efficiency is improved, and the blown wind is hot wind through the heating of the heating plate 5, so that the drying efficiency is further improved;
the blanking assembly 8 comprises a first supporting plate 81, a second supporting plate 82, a third supporting plate 83, a fixed plate 84, a moving groove 85, a moving rod 86, a hydraulic cylinder 87 and a lantern ring 88, wherein the welding machine is arranged on the outer wall of the bottom end of the annular support 71, the two first supporting plates 81 are close to the bottom end of a material pipe 3, the third supporting plate 83 is rotatably arranged on the bottom end of the other two first supporting plates 81, the second supporting plate 82 is rotatably arranged on the bottom end of the other two first supporting plates 81, a bottom plate 9 is welded on the bottom end between the second supporting plates 82, a moving rod 86 is rotatably arranged on the outer wall between the third supporting plates 83, the lantern ring 88 is sleeved on the middle outer wall of the moving rod 86, the bottom plate 9 is fixedly provided with the hydraulic cylinder 87 on the outer wall of the top end of one side of the lantern ring 88, one end of the telescopic shaft of the hydraulic cylinder 87 is fixedly arranged on the outer wall of the lantern ring 88, the bottom plate 9 is positioned on the outer wall of the top end of the two sides of the third supporting plates 83, the fixed plate 84 is welded on the outer wall of the corresponding moving rod 86, the moving groove 85 is correspondingly arranged on the outer wall of the moving plate 84, the outer wall of the moving rod 86 is rotatably connected with the inner wall of the moving groove 85, the moving rod 86 is convenient to operate, the blanking is convenient to install, the bottom plate 87 is convenient to start, the bottom plate is convenient to use, the practical 86 is convenient to start, the hydraulic cylinder is convenient to move, the cylinder 86 is driven by the cylinder 86 to move and the cylinder 82 is driven by the cylinder 82 to move through the lantern ring 88, and the cylinder 2, and is convenient to move 3 to move by the cylinder 2 and move and has a cylinder 3 to move through the cylinder 3;
placing the steel belt on a belt unreeling machine, rewinding the steel belt, cleaning the steel belt through a forming machine, rolling the steel belt into a U-shaped groove, adding the powder obtained in the second step into the U-shaped groove, controlling the filling rate of the powder core to be 23% -26%, sealing the steel belt by adopting the forming machine, reducing the diameter to 2.8mm to obtain a welding wire semi-finished product, then entering the next working procedure, drawing, reducing the diameter of the semi-finished product welding wire by drawing through a wire drawing machine, and reducing the drawing diameter to 1.6mm to obtain the flux-cored welding wire;
and fourthly, coiling the finished welding wire layer, packaging and warehousing.
Example 3
1-3, a self-protection flux-cored wire for low-temperature steel comprises a steel belt and medicinal powder filled in the steel belt, wherein the flux-cored wire is prepared by mixing, by weight, 31% of barium fluoride, 8% of ferrosilicon, 0.6% of ferrosilicon, 4% of ferrosilicon, 12% of aluminum magnesium powder, 1% of graphite, 9% of aluminum powder, 2% of marble, 5% of ferromolybdenum, 16% of ferrochromium and 11.44% of iron powder; the weight percentage of molybdenum in ferromolybdenum is 25% -35%, the weight percentage of aluminum in aluminum magnesium powder is 45% -50%, the weight percentage of chromium in ferrochromium is 50% -55%, and the weight percentage of silicon in ferrosilicon is 32% -40%; the steel strip has a composition of 304L, and the thickness multiplied by the width of the steel strip is 0.35mm multiplied by 10mm;
the preparation method of the self-protection flux-cored wire for the low-temperature steel comprises the following specific steps:
firstly, respectively weighing barium fluoride, ferrosilicon, electrolytic manganese, silicomanganese, aluminum magnesium powder, graphite, aluminum powder, marble, ferromolybdenum, ferrochrome and the balance of iron powder according to mass percentage, wherein the sum of the mass percentages of the components is 100%;
step two, weighing barium fluoride, electrolytic manganese, silicomanganese, graphite, aluminum magnesium powder and marble, adding a water glass binder, uniformly mixing, placing in a heating furnace, sintering, discharging, sieving, screening the powder with the granularity less than or equal to 55 meshes to obtain mixed powder A, weighing aluminum powder, marble, ferromolybdenum, ferrochrome and iron powder, stirring and mixing the powder A, wherein the stirring speed is 750r/min, the time is 20min, and drying the powder in the drying furnace after uniform mixing to obtain flux-cored powder; the drying furnace comprises a heat insulation roller 1, a drying cylinder 2, a material pipe 3, a valve 4, a heating plate 5, a drying assembly 6, a rotating assembly 7, a blanking assembly 8, a bottom plate 9 and a convex plate 10, wherein the drying cylinder 2 is welded on the inner wall of one side of the heat insulation roller 1, the material pipe 3 is correspondingly welded on the outer wall of one side of the heat insulation roller 1 in a penetrating manner, the material pipe 3 is communicated with the drying cylinder 2, the valve 4 is arranged on the outer wall of the material pipe 3, a plurality of heating plates 5 are arranged on the inner wall of the heat insulation roller 1, the drying assembly 6 is arranged on the outer wall of the drying cylinder 2, the rotating assembly 7 is arranged on the outer wall of the heat insulation roller 1, the blanking assembly 8 is arranged on the outer wall of the bottom end of the rotating assembly 7, when the material pipe 3 is discharged into the drying cylinder 2, the valve 4 is opened, raw materials are put into the drying cylinder 2 through the material pipe 3, and when the raw materials are discharged, the material port of the material pipe 3 is rotated to the downward direction;
the rotating assembly 7 comprises an annular support 71, an annular groove 72, an annular sliding block 73, a rotating motor 74, a belt pulley 75, a belt 76 and a belt groove 77, wherein two annular supports 71 are sleeved on the outer wall of the heat insulation roller 1, the annular groove 72 is formed in the inner wall of the annular support 71, the annular sliding block 73 is welded on the outer wall of the heat insulation roller 1 corresponding to the annular groove 72, the outer wall of the annular sliding block 73 is attached to the inner wall of the annular groove 72, the rotating motor 74 is installed on the outer wall of one side of the annular support 71, the belt pulley 75 is sleeved on one end of an output shaft of the rotating motor 74, the belt 76 is sleeved on the outer wall of the belt pulley 75, the belt groove 77 is formed in the outer wall of the heat insulation roller 1 corresponding to the belt 76, the other end of the belt 76 is sleeved in the belt groove 77, two convex plates 10 are fixed on the inner wall of the drying roller 2, the raw materials of the drying roller 2 are convenient to dry, the drying effect is relatively good, the working efficiency is improved, the rotating motor 74 drives the belt pulley 75 to rotate, the belt pulley 75 is matched with the belt groove 77, drives the heat insulation roller 1 and the drying roller 2 to rotate through the cooperation of the belt groove 77, and the heating plate 5 is matched to heat the raw materials, so that the raw materials are heated;
the drying assembly 6 comprises a spiral tube 61, a blowing hole 62, a bearing sleeve 63, a blower 64 and a connecting steel tube 65, wherein the spiral tube 61 is arranged on the outer wall of the drying cylinder 2, which is positioned in the heat insulation roller 1, one end of the spiral tube 61, which passes through the outer wall of the heat insulation roller 1, is rotatably provided with the bearing sleeve 63, the other end of the bearing sleeve 63 is inserted with the connecting steel tube 65, the connecting steel tube 65 is rotatably connected with the bearing sleeve 63, one side of the annular support 71 is correspondingly provided with the blower 64, the air outlet of the blower 64 is connected with one end of the connecting steel tube 65, raw materials in the drying cylinder 2 are further dried, the drying efficiency is further improved, the blower 64 is started, wind generated by the blower 64 is blown into the drying cylinder 2 from the blowing hole 62 through the connecting steel tube 65 and the spiral tube 61, the drying efficiency is improved, and the blown wind is hot wind through the heating of the heating plate 5, so that the drying efficiency is further improved;
the blanking assembly 8 comprises a first supporting plate 81, a second supporting plate 82, a third supporting plate 83, a fixed plate 84, a moving groove 85, a moving rod 86, a hydraulic cylinder 87 and a lantern ring 88, wherein the welding machine is arranged on the outer wall of the bottom end of the annular support 71, the two first supporting plates 81 are close to the bottom end of a material pipe 3, the third supporting plate 83 is rotatably arranged on the bottom end of the other two first supporting plates 81, the second supporting plate 82 is rotatably arranged on the bottom end of the other two first supporting plates 81, a bottom plate 9 is welded on the bottom end between the second supporting plates 82, a moving rod 86 is rotatably arranged on the outer wall between the third supporting plates 83, the lantern ring 88 is sleeved on the middle outer wall of the moving rod 86, the bottom plate 9 is fixedly provided with the hydraulic cylinder 87 on the outer wall of the top end of one side of the lantern ring 88, one end of the telescopic shaft of the hydraulic cylinder 87 is fixedly arranged on the outer wall of the lantern ring 88, the bottom plate 9 is positioned on the outer wall of the top end of the two sides of the third supporting plates 83, the fixed plate 84 is welded on the outer wall of the corresponding moving rod 86, the moving groove 85 is correspondingly arranged on the outer wall of the moving plate 84, the outer wall of the moving rod 86 is rotatably connected with the inner wall of the moving groove 85, the moving rod 86 is convenient to operate, the blanking is convenient to install, the bottom plate 87 is convenient to start, the bottom plate is convenient to use, the practical 86 is convenient to start, the hydraulic cylinder is convenient to move, the cylinder 86 is driven by the cylinder 86 to move and the cylinder 82 is driven by the cylinder 82 to move through the lantern ring 88, and the cylinder 2, and is convenient to move 3 to move by the cylinder 2 and move and has a cylinder 3 to move through the cylinder 3;
placing the steel belt on a belt unreeling machine, rewinding the steel belt, cleaning the steel belt through a forming machine, rolling the steel belt into a U-shaped groove, adding the powder obtained in the second step into the U-shaped groove, controlling the filling rate of the powder core to be 23% -26%, sealing the steel belt by adopting the forming machine, reducing the diameter to 2.8mm to obtain a welding wire semi-finished product, then entering the next working procedure, drawing, reducing the diameter of the semi-finished product welding wire by drawing through a wire drawing machine, and reducing the drawing diameter to 1.6mm to obtain the flux-cored welding wire;
and fourthly, coiling the finished welding wire layer, packaging and warehousing.
Weld metal welding tests are respectively carried out on the three stainless steel self-protection flux-cored wires in the embodiments 1-3, sample preparation, sampling standards and mechanical property tests are carried out according to the specifications in the GB/T17853-2018 standards, 2205 duplex stainless steel is used as a comparative example, and the test results are shown in the following table, and the detection results are shown in the following table:
TABLE 1
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. The self-protection flux-cored wire for the low-temperature steel comprises a steel belt and medicinal powder filled in the steel belt, and is characterized in that the flux-cored wire is prepared by mixing, by weight, 30% -31% of barium fluoride, 8% -12% of ferrosilicon, 0.4% -0.6% of electrolytic manganese, 4% -6% of ferrosilicon, 12% -14% of aluminum magnesium powder, 1% -3% of graphite, 9% -11% of aluminum powder, 2% -4% of marble, 5% -7% of ferromolybdenum, 14% -16% of ferrochromium and the balance of iron powder, the filling rate of the flux-cored wire is 23% -26%, the steel belt component is 304L, and the thickness x width of the steel belt is 0.35mm x 10mm.
2. The self-protection flux-cored wire for low-temperature steel according to claim 1, wherein the molybdenum in the ferromolybdenum is 25-35% by weight, the aluminum in the aluminum magnesium powder is 45-50% by weight, the chromium in the ferrochromium is 50-55% by weight, and the silicon in the ferrosilicon is 32-40% by weight.
3. The preparation method of the self-protection flux-cored wire for low-temperature steel, which is disclosed in claim 1, is characterized by comprising the following specific steps:
firstly, respectively weighing 30-31% of barium fluoride, 8-12% of ferrosilicon, 0.4-0.6% of electrolytic manganese, 4-6% of ferrosilicon, 12-14% of aluminum magnesium powder, 1-3% of graphite, 9-11% of aluminum powder, 2-4% of marble, 5-7% of ferromolybdenum, 14-16% of ferrochromium and the balance of iron powder according to mass percentage, wherein the sum of the mass percentages of the components is 100%;
step two, weighing barium fluoride, electrolytic manganese, silicomanganese, graphite, aluminum magnesium powder and marble, adding a water glass binder, uniformly mixing, placing in a heating furnace, sintering, discharging, sieving, screening the powder with the granularity less than or equal to 55 meshes to obtain mixed powder A, weighing aluminum powder, marble, ferromolybdenum, ferrochrome and iron powder, stirring and mixing the powder A, wherein the stirring speed is 750r/min, the time is 20min, and drying the powder in the drying furnace after uniform mixing to obtain flux-cored powder;
placing the steel belt on a belt unreeling machine, rewinding the steel belt, cleaning the steel belt through a forming machine, rolling the steel belt into a U-shaped groove, adding the powder obtained in the second step into the U-shaped groove, controlling the filling rate of the powder core to be 23% -26%, sealing the steel belt by adopting the forming machine, reducing the diameter to 2.8mm to obtain a welding wire semi-finished product, then entering the next working procedure, drawing, reducing the diameter of the semi-finished product welding wire by drawing through a wire drawing machine, and reducing the drawing diameter to 1.6mm to obtain the flux-cored welding wire;
and fourthly, coiling the finished welding wire layer, packaging and warehousing.
4. The method for preparing a self-shielded flux-cored wire for low-temperature steel according to claim 3, wherein in the second step, the sintering temperature is 450-600 ℃ and the sintering time is 1.5-3h.
5. The self-shielded flux-cored wire for low-temperature steel according to claim 3, wherein in the second step, the drying temperature is 150-200 ℃ and the drying time is 2.5h.
6. The method for preparing the self-protection flux-cored wire for low-temperature steel according to claim 3, wherein the drying furnace in the second step comprises a heat insulation roller (1), a drying roller (2), a material pipe (3), a valve (4), a heating plate (5), a drying component (6), a rotating component (7), a blanking component (8), a bottom plate (9) and a convex plate (10), wherein the drying roller (2) is welded on the inner wall of one side of the heat insulation roller (1), the material pipe (3) is correspondingly welded on the outer wall of one side of the heat insulation roller (1) in a penetrating way, the material pipe (3) is communicated with the drying roller (2), the valve (4) is installed on the outer wall of the material pipe (3), a plurality of heating plates (5) are installed on the inner wall of the heat insulation roller (1), the drying component (6) is arranged on the outer wall of the drying roller (2), the rotating component (7) is arranged on the outer wall of the heat insulation roller (1), and the blanking component (8) is arranged on the bottom end of the rotating component (7);
rotating assembly (7) are including annular support (71), ring channel (72), annular slider (73), rotating electrical machines (74), band pulley (75), belt (76) and trough of belt (77), cup jointed two annular supports (71) on the outer wall of thermal-insulated roller (1), annular channel (72) have been seted up on the inner wall of annular support (71), correspond ring channel (72) welding on the outer wall of thermal-insulated roller (1) and have annular slider (73), and the outer wall of annular slider (73) is laminated with the inner wall of ring channel (72), install rotating electrical machines (74) on the outer wall of one side of annular support (71), band pulley (75) have been cup jointed on the one end of rotating electrical machines (74) output shaft, band pulley (76) have been cup jointed on the outer wall of band pulley (75), corresponding band pulley (76) have been seted up on the outer wall of thermal-insulated roller (1) trough of belt (77), and the other end of band (76) cup joint in trough of belt (77), be fixed with two flange (10) on the inner wall of stoving section of thick bamboo (2).
7. The method for preparing the self-protection flux-cored wire for low-temperature steel according to claim 6, wherein the drying assembly (6) comprises a spiral tube (61), a blowing hole (62), a bearing sleeve (63), a blower (64) and a connecting steel tube (65), the spiral tube (61) is arranged on the outer wall of the drying cylinder (2) positioned in the heat-insulating cylinder (1), the bearing sleeve (63) is rotatably arranged at one end of the spiral tube (61) penetrating through the outer wall of the heat-insulating cylinder (1), the connecting steel tube (65) is inserted at the other end of the bearing sleeve (63), the connecting steel tube (65) is rotatably connected with the bearing sleeve (63), the blower (64) is correspondingly arranged on one side of the annular support (71) and an air outlet of the blower (64) is connected with one end of the connecting steel tube (65).
8. The method for preparing the self-protecting flux-cored wire for low-temperature steel according to claim 6, wherein the blanking component (8) comprises a first supporting plate (81), a second supporting plate (82), a third supporting plate (83), a fixed plate (84), a moving groove (85), a moving rod (86), a hydraulic cylinder (87) and a sleeve ring (88), wherein two first supporting plates (81) are rotatably arranged on the outer wall of the bottom end of the annular support (71), the third supporting plate (83) is rotatably arranged on the bottom end of the two first supporting plates (81) close to the material pipe (3), a second supporting plate (82) is rotatably arranged on the bottom end of the other two first supporting plates (81), a bottom plate (9) is rotatably arranged on the outer wall between the second supporting plates (82), a moving rod (86) is rotatably arranged on the outer wall between the third supporting plates (83), a sleeve ring (88) is sleeved on the middle outer wall of the moving rod (86), the hydraulic cylinder (87) is fixed on the top end of the outer wall of one side of the sleeve ring (88), the hydraulic cylinder (87) is fixed on the outer wall of the bottom plate (88), the telescopic shaft (88) is fixedly arranged on the outer wall of the bottom plate (84) which is fixedly arranged on the top of the outer wall of the telescopic supporting plate (84), a moving groove (85) is formed in the outer wall of the fixed plate (84) in a penetrating mode corresponding to the moving rod (86), and the outer wall of the moving rod (86) is attached to the inner wall of the moving groove (85).
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