CN110331354A - A kind of dedicated hot galvanizing steel strip hot-dip processing and forming technology of four sides cable - Google Patents
A kind of dedicated hot galvanizing steel strip hot-dip processing and forming technology of four sides cable Download PDFInfo
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- CN110331354A CN110331354A CN201910664023.5A CN201910664023A CN110331354A CN 110331354 A CN110331354 A CN 110331354A CN 201910664023 A CN201910664023 A CN 201910664023A CN 110331354 A CN110331354 A CN 110331354A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/32—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor using vibratory energy applied to the bath or substrate
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Abstract
The present invention relates to a kind of dedicated hot galvanizing steel strip hot-dip processing and forming technologies of four sides cable, including flattening, and temperature adjustment is zinc-plated, five steps such as cooling and winding.The present invention is compared with prior art, on the one hand it can effectively realize and carry out zinc-plated protection operation comprehensively to steel band outer surface, overcoming traditional galvanized steel strip only has zinc coat in upper surface lower end surface, the drawbacks such as side surface is thin without zinc coat or zinc coat and stability is poor, leftover pieces and rejection rate are reduced simultaneously, on the other hand the stability of steel band and zinc-plated Coating combination and the external force resistance impact of zinc coat can effectively be improved by reducing material waste, the ability of scuffing, and Several Thiourea Derivatives on Zinc Plate Surface finish and zinc-plated thickness uniformity can be effectively improved, to greatly improve the product quality of hot-galvanized steel band.
Description
Technical field
The present invention relates to a kind of dedicated hot galvanizing steel strip hot-dip processing and forming technologies of four sides cable, belong to metallurgical technology neck
Domain.
Background technique
At present in the fields such as packaging field, cable steel-tape armouring, galvanized steel strip is important raw material, due to actual use
In required galvanized steel strip width it is relatively small, generally no greater than 6 centimetres, former electrolytic zinc-coated steel sheet band sewage, spent acid etc. pollute
Seriously, the needs of environmental protection are unable to satisfy.Due to directly zinc-plated after the hot-dip galvanized steel strip cold rolling of current Metallurgical Enterprise production, then again
It is cut according to the needs of use, although this mode can satisfy the needs of galvanized steel strip production, but current this traditional
On the one hand production technology results in galvanized steel strip cutting work surface without zinc coat, easily so as to cause galvanized steel strip cutting work surface
It corrodes, on the other hand also results in zinc coat structure in the slitting process and destroyed, seriously affected steel strip surface plating
The structural strength and structural stability of zinc layers have seriously affected the product quality and corrosion resistance of galvanized steel strip, have furthermore cut
In operation, the cutting of soft state also easily generates leftover pieces, to cause the great wasting of resources, increase galvanized steel strip production and
Use cost.
For disadvantages described above, whole hot dip operation is carried out to small width steel band after cutting operation although currently also developing
Production technology, the big width strip of the tradition that such current production technology is all made of, steel plate hot plating technology, although to a certain extent
It can satisfy the needs of production, but since the larger width strip of small width steel band overall structural strength and steel plate are weak, it is curved to be also easy to produce
Folding etc. seriously affects the defect of steel strip surface quality, while increasing and reducing there is also width temperature of steel strips small when hot dip operation and becoming
Change acutely, the small defect of contact surface between steel band and molten state zinc liquid, so that current small width galvanized steel strip is not after causing hot dip
Exist with degree: surface quality is poor, is also easy to produce interlayer, bubble etc. between zinc coat and steel band seriously affects zinc coat and connect with steel band
Numerous defects such as stability, reliability and serious reduction zinc coat overall structural strength, therefore finished product rate is low, product quality
Stability is poor, it is difficult to effectively meet the use occasions such as high pressure, extra-high-tension cable to galvanized steel strip high-performance, high-precision and height
The requirement of stability used.
Therefore it is directed to this problem, there is an urgent need to develop a kind of completely new galvanized steel strip processing technologys, work as previous existence to overcome
The defects of produce, meet and uses needs.
Summary of the invention
The object of the invention, which is that, overcomes above-mentioned deficiency, provides a kind of dedicated hot galvanizing steel strip hot-dip of four sides cable and is processed into
Type technique.Used technical solution is the present invention to solve above-mentioned technical problem:
To achieve the above object, the present invention is to be achieved through the following technical solutions:
Steel coil strip to be processed, is installed on unreeling structure by S1, flattening first, and carries out traction to steel band by traction roller and put
Volume, and between traction roller and unreeling structure steel strip surface upper surface tension be 9-32KN, lower end surface tension be 10-36KN, two
Side side surface tension is identical and is 9-32KN, and steel band is not less than 15 seconds from unreeling structure to runing time between traction roller；
S2, temperature adjustment, by S1 walk in treated steel band be at the uniform velocity delivered in heating furnace, to steel band carry out heating temperature adjustment operation,
Wherein steel band is at the uniform velocity warming up to 500 DEG C-600 DEG C and completes preliminary heating entering in heating furnace in first 30-60 seconds, then exists
600 DEG C-950 DEG C are at the uniform velocity warming up within 10-30 seconds after completing preliminary heating, and continues 25-120 seconds completion middle section tune of heat preservation
Then temperature completes that temperature of steel strips is adjusted to 480 DEG C-520 DEG C in 10-20 seconds after the temperature adjustment of middle section, and is keeping the temperature 20-40
It is exported from heating furnace after second；
S3, zinc-plated, it is 480 that the steel band after S2 step temperature adjustment is immersed in temperature in 5-15 seconds after exporting from heating furnace
Carry out zinc-plated operation in the molten state zinc liquid of DEG C-520 DEG C zinc pots, and it is 3-10 that steel band immerses the time in molten state zinc liquid
Second, and maximum spacing is not less than 5 millimeters between steel band and molten state zinc liquid liquid level；
S4 cools down, and completes zinc-plated rear steel band from output in zinc pot in S3 step and is delivered at cooling mechanism under traction roller driving
Cooling processing is carried out, wherein steel band is at the uniform velocity to be cooled to 380 DEG C-430 in 3-5 seconds from zinc pot to time of delivery between cooling mechanism
DEG C, complete zinc coat primary solidification, complete zinc coat primary solidification after make in 10-20 seconds it is zinc-plated after temperature of steel strips go up to
400 DEG C-450 DEG C, and keep the temperature 10-60 seconds, then make it is zinc-plated after steel band with 10 DEG C-20 DEG C speed be at the uniform velocity cooled to 50 DEG C-
80 DEG C, cooling operation can be completed；
S5, winding are completed the post-job zinc-plated rear steel band of cooling and are delivered under traction roller driving with direction is parallel to the horizontal plane
Rolling-up mechanism is wound.
Further, steel band conveying speed is 20-100 meter per seconds in S1-S5 step.
Further, the meter per second of S1 step 120-140；In S2 step steel band conveying speed be 100-130 meters/
Second；Steel band conveying speed is 115-150 meter per seconds in S3 step；Steel band conveying speed is 110-130 meter per seconds in S4 step；S5
Steel band conveying speed is 140-160 meter per seconds in step.
Further, in S2, S3 step, steel band upper surface tension is 10-40KN, and lower end surface tension is 9-
41KN, two sides side surface tension is identical and is 9.5-40.5KN.
Further, in the S2, oxygen content is not more than 5% in heating furnace, and air pressure is 1.5-3 times of marks in heating furnace
Quasi- atmospheric pressure, and be in transverse magnetic environment that magnetic field strength is 0.1T -1.1T in heating furnace.
Further, in the S3, at least two supersonic oscillations devices, at least four electrode plates are set in zinc pot, and
Molten state zinc liquid is in the transverse magnetic environment that magnetic field strength is 0.1T -0.8T in zinc pot, and magnetic field magnetic induction line direction is distinguished
With steel strip surface and steel band traffic direction vertical distribution, furthermore the supersonic oscillations device and electrode plate are around zinc pot axis
It is uniformly distributed, and the electrode plate plate face and steel strip surface are in 0 ° -90 ° angles.
Further, in the S3, aluminium content is not more than 2% in zinc pot molten state zinc liquid.
Further, in the S4, when carrying out cooling operation to steel band after zinc-plated, be all made of temperature be -10 DEG C -
30 DEG C of inert gases cool down, and wherein inert gas air pressure is not less than 3 times of standard atmospheric pressures, and inert gas steel after zinc-plated
Belt surface is in 30 ° -90 ° angles, and steel strip surface forms the air film that thickness is not less than 5 millimeters after zinc-plated.
Further, it in the S4,85%-the 95% of conveying distance is in and water in steel band cooling procedure after zinc-plated
Plane vertical distribution state, wherein traffic direction is bottom-up operation when steel band enters cooling mechanism after zinc-plated, zinc-plated rear steel
Traffic direction is to run from up to down when band leaves cooling mechanism.
Make compared with prior art, the present invention on the one hand can effectively realize and carry out zinc-plated protection comprehensively to steel band outer surface
Industry, overcoming traditional galvanized steel strip, only there is a zinc coat in upper surface lower end surface, and side surface is thin without zinc coat or zinc coat and stability
Drawbacks such as difference, while reducing leftover pieces and rejection rate, reduce material waste on the other hand can effectively improve steel band with it is zinc-plated
The ability of external force resistance impact, the scuffing of the stability and zinc coat of Coating combination, and Several Thiourea Derivatives on Zinc Plate Surface finish can be effectively improved
With zinc-plated thickness uniformity, thus greatly improve hot-galvanized steel band product quality.
Detailed description of the invention
Fig. 1 is the method for the present invention flow chart.
Specific embodiment
Embodiment 1
As shown in Figure 1, a kind of dedicated hot galvanizing steel strip hot-dip processing and forming technology of four sides cable, comprising the following steps:
Steel coil strip to be processed, is installed on unreeling structure by S1, flattening first, and carries out traction to steel band by traction roller and put
Volume, and steel strip surface upper surface tension is 9 between traction roller and unreeling structure, lower end surface tension is 10, two sides side surface tension
It is identical and be 9, and steel band is 15 seconds from unreeling structure to runing time between traction roller；
S2, temperature adjustment, by S1 walk in treated steel band be at the uniform velocity delivered in heating furnace, to steel band carry out heating temperature adjustment operation,
Wherein steel band is at the uniform velocity warming up to 500 DEG C and completes preliminary heating entering in heating furnace in first 30 seconds, then completes preliminary rise
It is at the uniform velocity warming up to 600 DEG C within 10 seconds after temperature, and continues to keep the temperature completion middle section temperature adjustment in 120 seconds, then after completing middle section temperature adjustment
Temperature of steel strips is adjusted to 480 DEG C in 10 seconds, and is exported from heating furnace after keeping the temperature 20 seconds；
S3, zinc-plated, it is 480 DEG C of zinc pots that the steel band after S2 step temperature adjustment is immersed in temperature in 5 seconds after exporting from heating furnace
Molten state zinc liquid in carry out zinc-plated operation, and it is 3 seconds that steel band immerses the time in molten state zinc liquid, and steel band and molten state zinc
Maximum spacing is 5 millimeters between liquid liquid level；
S4 cools down, and completes zinc-plated rear steel band from output in zinc pot in S3 step and is delivered at cooling mechanism under traction roller driving
Cooling processing is carried out, wherein steel band is that 380 DEG C are at the uniform velocity cooled in 3 seconds from zinc pot to time of delivery between cooling mechanism, completes plating
Zinc layers primary solidification makes zinc-plated rear temperature of steel strips go up to 400 DEG C in 10 seconds, and keeps the temperature 60 after completing zinc coat primary solidification
Second, so that zinc-plated rear steel band is at the uniform velocity cooled to 50 DEG C with 10 DEG C of speed, cooling operation can be completed；
S5, winding are completed the post-job zinc-plated rear steel band of cooling and are delivered under traction roller driving with direction is parallel to the horizontal plane
Rolling-up mechanism is wound
Wherein, steel band conveying speed is 20-100 meter per seconds in S1-S5 step.
It advanced optimizes, S1 step 120 meter per second；Steel band conveying speed is 100 meter per seconds in S2 step；S3
Steel band conveying speed is 115 meter per seconds in step；Steel band conveying speed is 110 meter per seconds in S4 step；Steel band conveys in S5 step
Speed is 140 meter per seconds.
Meanwhile in S3, S4 step, steel band upper surface tension is 10KN, and lower end surface tension is 9KN, two sides side table
Face tension is identical and is 9.5KN.
In addition, oxygen content is 5% in heating furnace in the S2, air pressure is 1.5 times of standard atmospheric pressures in heating furnace, and
It is in transverse magnetic environment that magnetic field strength is 0.1T in heating furnace.
It needs to stress, at least two supersonic oscillations devices, at least four electrodes is set in the S3, in zinc pot
Plate, and molten state zinc liquid is in the transverse magnetic environment that magnetic field strength is 0.1T in zinc pot, and magnetic field magnetic induction line direction is distinguished
With steel strip surface and steel band traffic direction vertical distribution, furthermore the supersonic oscillations device and electrode plate are around zinc pot axis
It is uniformly distributed, and the electrode plate plate face and steel strip surface are in 0 ° -90 ° angles, while in the S3, in zinc pot molten state zinc liquid
Aluminium content is not more than 5%, separately containing the rare earth for accounting for zinc liquid total amount 0.1% -1%.
Meanwhile in the S4, when carrying out cooling operation to zinc-plated rear steel band, being all made of temperature is -10 DEG C of indifferent gas
Body cools down, and wherein inert gas air pressure is 3 times of standard atmospheric pressures, and inert gas steel strip surface after zinc-plated is pressed from both sides in 30 °
Angle, and the air film that steel strip surface is formed with a thickness of 5 millimeters after zinc-plated.Simultaneously in the S5, zinc-plated rear steel band cooling procedure
The 85% of middle conveying distance be in horizontal plane distribution, wherein steel band operation side when entering cooling mechanism after zinc-plated
To for bottom-up operation, it is zinc-plated after steel band when leaving cooling mechanism traffic direction be to run from up to down.
Wherein, inert gas is helium.
Embodiment 2
As shown in Figure 1, a kind of dedicated hot galvanizing steel strip hot-dip processing and forming technology of four sides cable, comprising the following steps:
Steel coil strip to be processed, is installed on unreeling structure by S1, flattening first, and carries out traction to steel band by traction roller and put
Volume, and steel strip surface upper surface tension is 32KN between traction roller and unreeling structure, lower end surface tension is 36KN, two sides side surface
Tension is identical and is 32KN, and steel band is 20 seconds from unreeling structure to runing time between traction roller；
S2, temperature adjustment, by S1 walk in treated steel band be at the uniform velocity delivered in heating furnace, to steel band carry out heating temperature adjustment operation,
Wherein steel band is at the uniform velocity warming up to 600 DEG C and completes preliminary heating entering in heating furnace in first 60 seconds, then completes preliminary rise
It is at the uniform velocity warming up to 950 DEG C within 30 seconds after temperature, and continues to keep the temperature completion middle section temperature adjustment in 25 seconds, then 20 after completing middle section temperature adjustment
Temperature of steel strips is adjusted to 520 DEG C in second, and is exported from heating furnace after keeping the temperature 40 seconds；
S3, zinc-plated, it is 520 DEG C of zinc pots that the steel band after S2 step temperature adjustment is immersed in temperature in 15 seconds after exporting from heating furnace
Molten state zinc liquid in carry out zinc-plated operation, and it is 10 seconds that steel band immerses the time in molten state zinc liquid, and steel band and molten state
Maximum spacing is 10 millimeters between zinc liquid liquid level；
S4 cools down, and completes zinc-plated rear steel band from output in zinc pot in S3 step and is delivered at cooling mechanism under traction roller driving
Cooling processing is carried out, wherein steel band is that 430 DEG C are at the uniform velocity cooled in 5 seconds from zinc pot to time of delivery between cooling mechanism, completes plating
Zinc layers primary solidification makes zinc-plated rear temperature of steel strips go up to 450 DEG C in 20 seconds, and keeps the temperature 60 after completing zinc coat primary solidification
Second, so that zinc-plated rear steel band is at the uniform velocity cooled to 80 DEG C with 20 DEG C of speed, cooling operation can be completed；
S5, winding are completed the post-job zinc-plated rear steel band of cooling and are delivered under traction roller driving with direction is parallel to the horizontal plane
Rolling-up mechanism is wound, and during transportation, while to the antirust oil that zinc-plated rear steel band outer surface spraying temperature is 60 DEG C.
Wherein, steel band conveying speed is 20-100 meter per seconds in S1-S5 step.
It advanced optimizes, S1 step 140 meter per second；Steel band conveying speed is 130 meter per seconds in S2 step；S3 step
Steel band conveying speed is 150 meter per seconds in rapid；Steel band conveying speed is 130 meter per seconds in S4 step；Steel band conveying speed in S5 step
Degree is 160 meter per seconds.
In addition, steel band upper surface tension is 40KN in S3, S4 step, lower end surface tension is 41KN, two sides side table
Face tension is identical and is 40.5KN.
Meanwhile in the S2, oxygen content is 0 in heating furnace, and air pressure is 3 times of standard atmospheric pressures in heating furnace, and is added
It is in transverse magnetic environment that magnetic field strength is 1.1T in hot stove.
It should be noted that, at least two supersonic oscillations devices, at least four electrode plates are set in the S3, in zinc pot,
And in zinc pot molten state zinc liquid be in magnetic field strength be 0.8T transverse magnetic environment in, and magnetic field magnetic induction line direction respectively with steel
Belt surface and steel band traffic direction vertical distribution, furthermore the supersonic oscillations device and electrode plate are equal around zinc pot axis
Cloth, and the electrode plate plate face and steel strip surface are in 90 ° of angles, and in the S3, aluminium content is in zinc pot molten state zinc liquid
0.1%。
In the present embodiment, in the S4, when carrying out cooling operation to zinc-plated rear steel band, being all made of temperature is 30 DEG C lazy
Property gas cool down, wherein inert gas air pressure is 5 times of standard atmospheric pressures, and inert gas steel strip surface after zinc-plated is in
90 ° of angles, and the air film that steel strip surface is formed with a thickness of 15 millimeters after zinc-plated, and in the S5, zinc-plated rear steel band is cooling
In the process the 95% of conveying distance be in horizontal plane distribution, wherein it is zinc-plated after steel band enter cooling mechanism luck
Line direction is bottom-up operation, and traffic direction is to run from up to down when zinc-plated rear steel band leaves cooling mechanism.
Wherein, inert gas is nitrogen.
Embodiment 3
As shown in Figure 1, a kind of dedicated hot galvanizing steel strip hot-dip processing and forming technology of four sides cable, comprising the following steps:
Steel coil strip to be processed, is installed on unreeling structure by S1, flattening first, and carries out traction to steel band by traction roller and put
Volume, and steel strip surface upper surface tension is 20KN between traction roller and unreeling structure, lower end surface tension is 21KN, two sides side surface
Tension is identical and is 19KN, and steel band is 20 seconds from unreeling structure to runing time between traction roller；
S2, temperature adjustment, by S1 walk in treated steel band be at the uniform velocity delivered in heating furnace, to steel band carry out heating temperature adjustment operation,
Wherein steel band is at the uniform velocity warming up to 550 DEG C and completes preliminary heating entering in heating furnace in first 40 seconds, then completes preliminary rise
It is at the uniform velocity warming up to 900 DEG C within 20 seconds after temperature, and continues to keep the temperature completion middle section temperature adjustment in 100 seconds, then after completing middle section temperature adjustment
Temperature of steel strips is adjusted to 500 DEG C in 15 seconds, and is exported from heating furnace after keeping the temperature 30 seconds；
S3, zinc-plated, it is 500 DEG C of zinc pots that the steel band after S2 step temperature adjustment is immersed in temperature in 10 seconds after exporting from heating furnace
Molten state zinc liquid in carry out zinc-plated operation, and it is 7 seconds that steel band immerses the time in molten state zinc liquid, and steel band and molten state zinc
Maximum spacing is 8 millimeters between liquid liquid level；
S4 cools down, and completes zinc-plated rear steel band from output in zinc pot in S3 step and is delivered at cooling mechanism under traction roller driving
Cooling processing is carried out, wherein steel band is that 400 DEG C are at the uniform velocity cooled in 4 seconds from zinc pot to time of delivery between cooling mechanism, completes plating
Zinc layers primary solidification makes zinc-plated rear temperature of steel strips go up to 420 DEG C in 15 seconds, and keeps the temperature 30 after completing zinc coat primary solidification
Second, so that zinc-plated rear steel band is at the uniform velocity cooled to 70 DEG C with 15 DEG C of speed, cooling operation can be completed；
S5, winding are completed the post-job zinc-plated rear steel band of cooling and are delivered under traction roller driving with direction is parallel to the horizontal plane
Rolling-up mechanism is wound, and during transportation, while to the antirust oil that zinc-plated rear steel band outer surface spraying temperature is 50 DEG C.
Wherein, steel band conveying speed is 20-100 meter per seconds in S1-S5 step.
It advanced optimizes, S1 step 130 meter per second；Suddenly middle steel band conveying speed is 125 meter per seconds to S2；S3 is rapid
Middle steel band conveying speed is 145 meter per seconds；Suddenly middle steel band conveying speed is 125 meter per seconds to S4；Suddenly middle steel band conveying speed is 150 to S5
Meter per second.
Meanwhile in S3, S4 step, steel band upper surface tension is 30KN, and lower end surface tension is 31KN, two sides side table
Face tension is identical and is 32KN.
In addition, the S2, oxygen content is 1% in heating furnace, and air pressure is 2.1 times of standard atmospheric pressures in heating furnace, and is added
It is in transverse magnetic environment that magnetic field strength is 0.5T in hot stove.
It stresses, the S3, at least two supersonic oscillations devices, at least four electrode plates is set in zinc pot, and
In zinc pot molten state zinc liquid be in magnetic field strength be 0.8T transverse magnetic environment in, and magnetic field magnetic induction line direction respectively with steel band
Surface and steel band traffic direction vertical distribution, furthermore the supersonic oscillations device and electrode plate are uniformly distributed around zinc pot axis,
And the electrode plate plate face and steel strip surface are in 45 ° of angles, and the S3, aluminium content is not more than in zinc pot molten state zinc liquid
5%, while separately containing the rare earth for accounting for zinc pot molten state zinc liquid weight 0.2-1.1% in zinc pot molten state zinc liquid.
In the present embodiment, the S4, when carrying out cooling operation to zinc-plated rear steel band, being all made of temperature is 0 DEG C of inertia
Gas cools down, and wherein inert gas air pressure is 8 times of standard atmospheric pressures, and inert gas steel strip surface after zinc-plated is in 45 °
Angle, and the air film that steel strip surface is formed with a thickness of 15 millimeters after zinc-plated, furthermore in the S5, zinc-plated rear steel band is cooled
In journey the 90% of conveying distance be in horizontal plane distribution, wherein steel band operation when entering cooling mechanism after zinc-plated
Direction is bottom-up operation, and traffic direction is to run from up to down when zinc-plated rear steel band leaves cooling mechanism.
Wherein, inert gas is carbon dioxide.
Embodiment 4
A kind of dedicated hot galvanizing steel strip hot-dip processing and forming technology of four sides cable, comprising the following steps:
Steel coil strip to be processed, is installed on unreeling structure by S1, flattening first, and carries out traction to steel band by traction roller and put
Volume, and steel strip surface upper surface tension is 25KN between traction roller and unreeling structure, lower end surface tension is 26KN, two sides side surface
Tension is identical and is 24KN, and steel band is 30 seconds from unreeling structure to runing time between traction roller；
S2, temperature adjustment, by S1 walk in treated steel band be at the uniform velocity delivered in heating furnace, to steel band carry out heating temperature adjustment operation,
Wherein steel band is at the uniform velocity warming up to 540 DEG C and completes preliminary heating entering in heating furnace in first 40 seconds, then completes preliminary rise
It is at the uniform velocity warming up to 850 DEG C within 25 seconds after temperature, and continues to keep the temperature completion middle section temperature adjustment in 90 seconds, then 13 after completing middle section temperature adjustment
Temperature of steel strips is adjusted to 490 DEG C in second, and is exported from heating furnace after keeping the temperature 30 seconds；
S3, zinc-plated, it is 490 DEG C of zinc pots that the steel band after S2 step temperature adjustment is immersed in temperature in 10 seconds after exporting from heating furnace
Molten state zinc liquid in carry out zinc-plated operation, and it is 6 seconds that steel band immerses the time in molten state zinc liquid, and steel band and molten state zinc
Maximum spacing is 6 millimeters between liquid liquid level；
S4 cools down, and completes zinc-plated rear steel band from output in zinc pot in S3 step and is delivered at cooling mechanism under traction roller driving
Cooling processing is carried out, wherein steel band is that 410 DEG C are at the uniform velocity cooled in 4 seconds from zinc pot to time of delivery between cooling mechanism, completes plating
Zinc layers primary solidification makes zinc-plated rear temperature of steel strips go up to 425 DEG C in 13 seconds, and keeps the temperature 25 after completing zinc coat primary solidification
Second, so that zinc-plated rear steel band is at the uniform velocity cooled to 30 DEG C with 13 DEG C of speed, cooling operation can be completed；
S5, winding are completed the post-job zinc-plated rear steel band of cooling and are delivered under traction roller driving with direction is parallel to the horizontal plane
Rolling-up mechanism is wound, and during transportation, while to the antirust oil that zinc-plated rear steel band outer surface spraying temperature is 55 DEG C.
In the present embodiment, steel band conveying speed is 20-100 meter per seconds in S1-S5 step.
Optimize in further, S1 step 136 meter per second；Steel band conveying speed is 130 meter per seconds in S2 step；S3
Steel band conveying speed is 140 meter per seconds in step；Steel band conveying speed is 125 meter per seconds in S4 step；Steel band conveys in S5 step
Speed is 150 meter per seconds.
Meanwhile in S3, S4 step, steel band upper surface tension is 20KN, and lower end surface tension is 22KN, two sides side table
Face tension is identical and is 20KN.
Wherein, in the S2 step, oxygen content is 3% in heating furnace, and air pressure is 2.5 times of normal atmospheres in heating furnace
Pressure, and be in transverse magnetic environment that magnetic field strength is 0.5T in heating furnace.
It is important to note that, at least two supersonic oscillations devices, at least four electrode plates is set in the S3, in zinc pot,
And in zinc pot molten state zinc liquid be in magnetic field strength be 0.8T transverse magnetic environment in, and magnetic field magnetic induction line direction respectively with steel
Belt surface and steel band traffic direction vertical distribution, furthermore the supersonic oscillations device and electrode plate are equal around zinc pot axis
Cloth, and the electrode plate plate face and steel strip surface are in 60 ° of angles, and in the S3, aluminium content is not in zinc pot molten state zinc liquid
Greater than 5%.
It advanced optimizes, in the S4, when carrying out cooling operation to zinc-plated rear steel band, being all made of temperature is 10 DEG C
Inert gas cools down, wherein 8 times of standard atmospheric pressures of inert gas air pressure, and inert gas steel strip surface after zinc-plated is in
60 ° of angles, and the air film that steel strip surface is formed with a thickness of 12 after zinc-plated, and in the S5, zinc-plated rear steel band cooling procedure
The 90% of middle conveying distance be in horizontal plane distribution, wherein steel band operation side when entering cooling mechanism after zinc-plated
To for bottom-up operation, it is zinc-plated after steel band when leaving cooling mechanism traffic direction be to run from up to down.
Make compared with prior art, the present invention on the one hand can effectively realize and carry out zinc-plated protection comprehensively to steel band outer surface
Industry, overcoming traditional galvanized steel strip, only there is a zinc coat in upper surface lower end surface, and side surface is thin without zinc coat or zinc coat and stability
Drawbacks such as difference, while reducing leftover pieces and rejection rate, reduce material waste on the other hand can effectively improve steel band with it is zinc-plated
The ability of external force resistance impact, the scuffing of the stability and zinc coat of Coating combination, and Several Thiourea Derivatives on Zinc Plate Surface finish can be effectively improved
With zinc-plated thickness uniformity, thus greatly improve hot-galvanized steel band product quality.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (9)
1. a kind of dedicated hot galvanizing steel strip hot-dip processing and forming technology of four sides cable, it is characterised in that: the four sides hot galvanizing
Steel strip hot-dip processing and forming technology the following steps are included:
Steel coil strip to be processed, is installed on unreeling structure by S1, flattening first, and carries out traction to steel band by traction roller and put
Volume, and between traction roller and unreeling structure steel strip surface upper surface tension be 9-32KN, lower end surface tension be 10-36KN, two
Side side surface tension is identical and is 9-32KN, and steel band is not less than 15 seconds from unreeling structure to runing time between traction roller；
S2, temperature adjustment, by S1 walk in treated steel band be at the uniform velocity delivered in heating furnace, to steel band carry out heating temperature adjustment operation,
Wherein steel band is at the uniform velocity warming up to 500 DEG C-600 DEG C and completes preliminary heating entering in heating furnace in first 30-60 seconds, then exists
600 DEG C-950 DEG C are at the uniform velocity warming up within 10-30 seconds after completing preliminary heating, and continues 25-120 seconds completion middle section tune of heat preservation
Then temperature completes that temperature of steel strips is adjusted to 480 DEG C-520 DEG C in 10-20 seconds after the temperature adjustment of middle section, and is keeping the temperature 20-40
It is exported from heating furnace after second；
S3, zinc-plated, it is 480 that the steel band after S2 step temperature adjustment is immersed in temperature in 5-15 seconds after exporting from heating furnace
Carry out zinc-plated operation in the molten state zinc liquid of DEG C-520 DEG C zinc pots, and it is 3-10 that steel band immerses the time in molten state zinc liquid
Second, and maximum spacing is not less than 5 millimeters between steel band and molten state zinc liquid liquid level；
S4 cools down, and completes zinc-plated rear steel band from output in zinc pot in S3 step and is delivered at cooling mechanism under traction roller driving
Cooling processing is carried out, wherein steel band is at the uniform velocity to be cooled to 380 DEG C-430 in 3-5 seconds from zinc pot to time of delivery between cooling mechanism
DEG C, complete zinc coat primary solidification, complete zinc coat primary solidification after make in 10-20 seconds it is zinc-plated after temperature of steel strips go up to
400 DEG C-450 DEG C, and keep the temperature 10-60 seconds, then make it is zinc-plated after steel band with 10 DEG C-20 DEG C speed be at the uniform velocity cooled to 50 DEG C-
80 DEG C, cooling operation can be completed；
S5, winding are completed the post-job zinc-plated rear steel band of cooling and are delivered under traction roller driving with direction is parallel to the horizontal plane
Rolling-up mechanism is wound.
2. the dedicated hot galvanizing steel strip hot-dip processing and forming technology of a kind of four sides cable according to claim 1, feature exist
In steel band conveying speed is 20-100 meter per seconds in S1-S5 step.
3. the dedicated hot galvanizing steel strip hot-dip processing and forming technology of a kind of four sides cable according to claim 2, feature exist
In the meter per second of S1 step 120-140；Steel band conveying speed is 100-130 meter per seconds in S2 step；Steel band in S3 step
Conveying speed is 115-150 meter per seconds；Steel band conveying speed is 110-130 meter per seconds in S4 step；Steel band conveys in S5 step
Speed is 140-160 meter per seconds.
4. the dedicated hot galvanizing steel strip hot-dip processing and forming technology of a kind of four sides cable according to claim 1, feature exist
In in S2, S3 step, steel band upper surface tension is 10-40KN, and lower end surface tension is 9-41KN, two sides side surface
Tension is identical and is 9.5-40.5KN.
5. the dedicated hot galvanizing steel strip hot-dip processing and forming technology of a kind of four sides cable according to claim 1, feature exist
In in the S2, oxygen content is not more than 5% in heating furnace, and air pressure is 1.5-3 times of standard atmospheric pressures in heating furnace, and is added
It is in transverse magnetic environment that magnetic field strength is 0.1T -1.1T in hot stove.
6. the dedicated hot galvanizing steel strip hot-dip processing and forming technology of a kind of four sides cable according to claim 1, feature exist
In setting at least two supersonic oscillations devices, at least four electrode plates, and molten state zinc in zinc pot in the S3, in zinc pot
Liquid be in magnetic field strength be 0.1T -0.8T transverse magnetic environment in, and magnetic field magnetic induction line direction respectively with steel strip surface and steel
Band traffic direction vertical distribution, furthermore the supersonic oscillations device and electrode plate are uniformly distributed around zinc pot axis, and the electricity
Pole plate plate face and steel strip surface are in 0 ° -90 ° angles.
7. the dedicated hot galvanizing steel strip hot-dip processing and forming technology of a kind of four sides cable according to claim 1, feature exist
In in the S3, aluminium content is not more than 2% in zinc pot molten state zinc liquid.
8. the dedicated hot galvanizing steel strip hot-dip processing and forming technology of a kind of four sides cable according to claim 1, feature exist
In, in the S4, when carrying out cooling operation to steel band after zinc-plated, be all made of temperature be -10 DEG C -30 DEG C inert gases into
Row cooling, wherein inert gas air pressure are not less than 3 times of standard atmospheric pressures, and inert gas after zinc-plated steel strip surface in 30 °-
90 ° of angles, and steel strip surface forms the air film that thickness is not less than 5 millimeters after zinc-plated.
9. the dedicated hot galvanizing steel strip hot-dip processing and forming technology of a kind of four sides cable according to claim 1, feature exist
In in the S4,85%-the 95% of conveying distance is in zinc-plated rear steel band cooling procedure and horizontal plane is distributed shape
State, wherein traffic direction is bottom-up operation when steel band enters cooling mechanism after zinc-plated, zinc-plated rear steel band leaves cooling mechanism
When traffic direction be run from up to down.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114351201A (en) * | 2021-12-17 | 2022-04-15 | 无锡苏盛金属制品有限公司 | Steel belt surface rust prevention treatment process |
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