CN113941603A - Processing technology of pressure-resistant high-carbon galvanized strip steel - Google Patents
Processing technology of pressure-resistant high-carbon galvanized strip steel Download PDFInfo
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- CN113941603A CN113941603A CN202111221715.6A CN202111221715A CN113941603A CN 113941603 A CN113941603 A CN 113941603A CN 202111221715 A CN202111221715 A CN 202111221715A CN 113941603 A CN113941603 A CN 113941603A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0269—Cleaning
- B21B45/0272—Cleaning compositions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
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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
- C23C2/26—After-treatment
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0057—Coiling the rolled product
Abstract
The invention relates to the technical field of strip steel processing, in particular to a processing technology of pressure-resistant high-carbon galvanized strip steel, which comprises the following steps: firstly, preparing two strip steel blanks, and pickling the two strip steel blanks; spraying and washing the two strip steel blanks subjected to acid washing by the hydrochloric acid solution through clear water, and drying the strip steel blanks through drying equipment after removing residual acid on the surface; respectively rolling the gauge block strip steel blanks into prefabricated strip steel with the thickness of 1 mm-2.5 mm by a rolling mill; the rolled measuring strip prefabricated strip steel is chemically cleaned, two prefabricated strip steel blanks are cleaned by using an electrolytic cleaning agent and then placed in an annealing furnace for annealing, then the two prefabricated strip steel blanks are unfolded and tiled on a workbench, and a proper number of reinforcing steel strips are placed at the upper end of one prefabricated strip steel. The invention can obviously and stably strengthen the quality of the strip steel and the compressive strength of the strip steel, can greatly improve the mechanical strength of the strip steel and can meet the requirement of long-term use in complex environments.
Description
Technical Field
The invention relates to the technical field of strip steel processing, in particular to a processing technology of a pressure-resistant high-carbon galvanized strip steel.
Background
At present, the strip steel is a narrow and long steel plate produced by various steel rolling enterprises in order to meet the requirements of different industrial departments on industrialized production of various types of metal or mechanical products. The strip steel is also called as steel strip, the width is within 1300mm, the length is slightly different according to the size of each roll, and the strip steel is divided into high-quality strip steel and common strip steel according to the quality of the steel; the rolling method is divided into hot rolling and cold rolling, which are respectively called hot rolling strip steel and cold rolling strip steel. The thickness of the hot-rolled common strip steel is 2 mm-6 mm, and the thickness of the cold-rolled strip steel is 0.05 mm-3.60 mm. The strip steel can be made of plain carbon steel, spring steel, tool steel, stainless steel and other steel. It is widely used for manufacturing welded pipes, hoops, washers, spring leaves, saw blades, etc.
For example, patent No. CN201611088766.5 discloses a production process of cold-rolled strip steel, which comprises the following steps: s1, moving the cold-rolled strip steel to a cleaning unit (1), and degreasing, electrolyzing and washing the cold-rolled strip steel; s2, winding the cleaned strip steel, and placing the strip steel in a full hydrogen chamber bright mask type annealing furnace (6) with the temperature controlled at 710-790 ℃; s3, sequentially passing the annealed strip steel through a four-roll temper mill, a withdrawal and straightening machine and a coiling machine; s4, finally coating antirust liquid, adding a paper sleeve, packaging and warehousing; s2, after the strip steel is placed into a full hydrogen chamber bright-shade annealing furnace (6), heating to 710-740 ℃, preserving heat for 1-2 hours, then raising the temperature to 740-790 ℃, and preserving heat for 15-20 hours; a hearth variable frequency fan is communicated in the all-hydrogen chamber bright-light hood type annealing furnace (6) to form strong convection circulation in the all-hydrogen chamber bright-light hood type annealing furnace (6). In S1, the strip steel is electrolyzed by using an electrode grid (3) arranged in the electrolytic cell. In S1, high-pressure jet and brush roller (5) are used for brushing. In S1, degreasing is performed using an alkaline degreasing agent. The all-hydrogen chamber bright-light cover type annealing furnace (6) comprises a placing base (7), a sealing cover (8) covered on the placing base (7) and a cooling cover covered on the sealing cover (8); the furnace platform frequency conversion fan is communicated in a sealing cover (8), a heating chamber is formed between a cooling cover and the sealing cover (8), and a waste hydrogen burner which is positioned in the heating chamber and used for burning hydrogen is arranged on the sealing cover (8). And S3, coating the leveling liquid when the strip steel passes through the four-roller leveling machine. In S4, the antirust liquid is sprayed by using electrostatic antirust oil; the patent reduces the hardness of the strip steel and improves the performances of the strip steel such as plasticity and toughness by carrying out the staged annealing on the strip steel, and simultaneously improves the surface quality of the strip steel by cleaning a unit, spraying high-purity hydrogen, leveling liquid and anti-rust oil, and avoids the phenomena of surface oxidation, rusting, pitting and the like;
for example, the invention patent with the patent number of CN 201810020574.3 discloses a strip steel processing technology for a spring sheet, which comprises the following steps: preparing raw materials, and selecting a hot-rolled coil with the brand number of SCM 435; step two, carrying out primary longitudinal shearing and splitting, and transferring the hot-rolled coil prepared in the step one to a first large longitudinal shearing production line through a hoisting device to carry out primary longitudinal shearing and splitting, wherein when the hot-rolled coil is longitudinally sheared, a margin of 0.5mm is reserved in the width direction; step three, softening and annealing, transferring the hot-rolled coil subjected to the first longitudinal shearing and splitting into strips into an annealing furnace/ammonia decomposition furnace through a hoisting device, firstly heating the annealing furnace to 400 ℃ at full speed, preserving heat for 1.8h to 2.4h after heating to 400 ℃, then preserving heat for 1.8h to 2.4h at the temperature of 400 ℃, heating the annealing furnace to 600 ℃ within 1h to 2.8h, preserving heat for 0.5h to 4h after heating to 600 ℃, then preserving heat for 0.5h to 4h at the temperature of 600 ℃, heating the annealing furnace to 690 ℃ within 1.8h to 5h, preserving heat for 0.5h to 4h after heating to 690 ℃, fourth, preserving heat for 0.5h to 4h at the temperature of 690 ℃, heating the annealing furnace to 710 ℃ to 730 ℃ within 1h to 5h, preserving heat for 10h to 18h after heating to 710 ℃ to 730 ℃, and preserving heat for 10h to 730 h after fifth, preserving heat for 10h to 710 ℃ to 730 h, cooling the annealing furnace for 6.4 to 8 hours in a furnace cooling mode, sixthly, cooling the annealing furnace for 6.4 to 8 hours in a furnace cooling mode, then carrying out cover changing air cooling on the annealing furnace, reducing the temperature of the annealing furnace to 280 ℃, and seventh, reducing the temperature of the annealing furnace to 280 ℃, then reducing the temperature of the annealing furnace from 280 ℃ to 80 ℃ in a water cooling mode, and finally discharging to obtain a softened annealed coil; step four, acid washing, namely transferring the softened and annealed coil plate obtained by softening and annealing to an acid washing production line through a hoisting device for acid washing to obtain an acid-washed coil plate; fifthly, rolling, namely transferring the acid-washed coil plate obtained after acid washing to a rolling mill production line through a hoisting device for rolling, and obtaining a rolled coil plate, wherein the thickness of the rolled coil plate is 4 mm; sixthly, spheroidizing annealing, transferring the rolled coil obtained after rolling into an annealing furnace/ammonia decomposition furnace through a hoisting device for spheroidizing annealing, firstly heating the annealing furnace to 400 ℃ at full speed, preserving heat for 1h to 5h after heating to 400 ℃, then preserving heat for 1h to 5h at the temperature of 400 ℃, heating the annealing furnace to 640 ℃ within 1h to 6h, preserving heat for 0.5h to 4h after heating to 640 ℃, then preserving heat for 0.5h to 4h at the temperature of 640 ℃, heating the annealing furnace to 730 ℃ within 1h to 5h, preserving heat for 0.5h to 4h after heating to 730 ℃, fourthly, preserving heat for 0.5h to 4h at the temperature of 730 ℃, heating the annealing furnace to 740 ℃ to 760 ℃ within 0.5h to 2h, preserving heat for 10h to 16h after heating to 740 ℃ to 760 ℃, and preserving heat for 10h to 16h at the temperature of 740 ℃ to 760 ℃ and preserving heat for 10h to 16h, reducing the temperature of the annealing furnace to 550-600 ℃ by a furnace cooling mode, sixth, after reducing the temperature of the annealing furnace to 550-600 ℃ by the furnace cooling mode, carrying out cover changing air cooling on the annealing furnace, reducing the temperature of the annealing furnace to 280 ℃, seventh, reducing the temperature of the annealing furnace to 280 ℃, then reducing the temperature of the annealing furnace from 280 ℃ to 80 ℃ by a water cooling mode, and finally discharging to obtain a spheroidizing annealing coiled plate; step seven, finish rolling, namely transferring the spheroidizing annealed coil obtained after spheroidizing annealing to a rolling mill production line through a hoisting device for finish rolling to obtain a finish rolled coil; step eight, carrying out secondary longitudinal shearing and splitting, and transferring the finish-rolled coil obtained by finish rolling to a small splitting machine through a hoisting device to carry out secondary longitudinal shearing and splitting, and preparing a split coil; and step nine, packaging and warehousing, and packaging the split coiled plates obtained after the secondary longitudinal shearing and splitting by using a packaging machine. This patent is through when carrying out the softening annealing to the hot rolling coil, cut apart into a plurality of stages with whole softening annealing process, and effectual control is good the intensification time in each stage, the temperature in heat preservation time and each stage, and when carrying out spheroidizing annealing to the rolling coil, cut apart into a plurality of stages with whole spheroidizing annealing process, and effectual control is good the intensification time in each stage, the temperature in heat preservation time and each stage, thereby make the product quality who produces stable, the product percent of pass obtains promoting, thereby further improvement labor production.
However, due to the limitation of the processing technology, the compressive strength of the prior art is generally poor, the quality of the prior art is not stable enough, the service life of the prior art is seriously shortened under a complex use environment, and the phenomenon of frequent scrapping severely restricts the development and application of the prior art.
Therefore, a processing technology of the pressure-resistant high-carbon galvanized steel strip is particularly provided to solve the technical problems.
Disclosure of Invention
In order to overcome the defects that the existing scheme can not solve the field equipment terminal data acquisition, the invention provides a processing technology of the pressure-resistant high-carbon galvanized steel strip, the processing technology of the steel strip can be optimized, the reinforced steel strip and the pressure-resistant reinforcing plate are introduced to reinforce the steel strip, the mode of double-layer galvanized steel strip is innovatively adopted, the integral connection among the reinforced steel strip, the steel strip and the pressure-resistant reinforcing plate is realized, the connection strength is high, the peeling and falling phenomena are not easy to occur, and simultaneously, the pressure-resistant strength of the double-layer steel strip and the double-layer reinforced steel strip is greatly increased, so that the effective and stable reinforcement is obviously carried out on the steel quality and the pressure-resistant strength of the steel strip, the mechanical strength of the steel strip can be greatly improved, the long-term use under the complex environment is met, the technical scheme of the invention adds a chemical cleaning process between two annealing processes, and controls the solution, effectively cleaning the surface of the strip steel, thoroughly avoiding the carbon deposition defect on the surface of the strip steel after twice annealing, and effectively improving the quality of strip steel products.
The technical scheme adopted by the invention for solving the technical problems is as follows: a processing technology of pressure-resistant high-carbon galvanized strip steel comprises the following steps:
s1, firstly, preparing two strip steel blanks, and pickling the two strip steel blanks;
s2, carrying out spray washing on the two strip steel blanks subjected to the acid washing by the hydrochloric acid solution through clear water, removing residual acid on the surfaces, and drying the strip steel blanks through drying equipment;
s3, rolling the gauge block strip steel blanks into prefabricated strip steel with the thickness of 1 mm-2.5 mm through a rolling mill respectively;
s4, chemically cleaning the rolled measuring strip prefabricated strip steel, cleaning two strip steel blanks by using an electrolytic cleaning agent, and then placing the two strip steel blanks into an annealing furnace for annealing;
s5, spreading and flatly paving two prefabricated strip steels on a workbench, placing a proper number of reinforcing steel bars at the upper end of one of the prefabricated strip steels, reserving gaps among the reinforcing steel bars A, pressing the reinforcing steel bars A through a compression joint device, and heating the prefabricated strip steels to enable the reinforcing steel bars A and the prefabricated strip steels to form an integral structure;
s6, placing the compression-resistant reinforcing plate at the upper end of the reinforcing steel bar A, and forming an integral structure between the compression-resistant reinforcing plate and the reinforcing steel bar A through a compression joint device;
s7, placing a proper number of reinforcing steel bars B at the upper end of the reinforcing plate, keeping gaps between the reinforcing steel bars B, pressing the reinforcing steel bars B through a compression joint device, and heating the prefabricated steel strip to enable the reinforcing steel bars B and the prefabricated steel strip to form an integral structure;
s8, placing another prefabricated steel strip above the reinforced steel strip B, and pressing the prefabricated steel strip and the reinforced steel strip B through a crimping device to form an integral structure between the reinforced steel strip B and the prefabricated steel strip;
s9, transferring the steel strip into an annealing furnace for annealing after compression molding, taking out the steel strip and transferring the steel strip to a rolling mill for finish rolling to obtain reinforced strip steel with the thickness of 3-8.5 mm;
s10, cleaning the surface of the reinforced strip steel and then carrying out hot galvanizing processing on the reinforced strip steel;
and S11, cooling the reinforced strip steel subjected to hot galvanizing processing, cleaning the surface of the reinforced strip steel, curling the reinforced strip steel finished product into a bundle, and finally packaging and warehousing.
Further, the reinforcing strip steel is hot-galvanized in step S10 in such a manner that the reinforcing strip steel passes through a heating section in the hot-galvanizing equipment, the reinforcing strip steel is heated in a reducing atmosphere in the heating section, so that a thin layer of iron oxide on the surface of the reinforcing strip steel is sufficiently reduced, and then the reinforcing strip steel passes through a soaking section and a cooling section in the hot-galvanizing equipment, so that the reinforcing strip steel enters a zinc pot at a process temperature suitable for galvanizing to be galvanized.
Further, when the reinforced strip steel is galvanized in the step S10, the tension value of the reinforced strip steel in the zinc pot cooling tower of the hot galvanizing process section needs to be controlled to be 4-8 kN, and the hardness of the coating roller in the hot galvanizing equipment is adjusted to be 35 HA-55 HA.
Further, the reinforcing steel bars a in the step S5 are vertically arranged in parallel to each other at the upper end of the prefabricated steel strip, and the intervals between the reinforcing steel bars a are the same.
Further, the reinforcing steel bars B in the step S7 are vertically arranged in parallel with each other at the upper end of the pressure-resistant reinforcing plate, the intervals between the reinforcing steel bars are the same, and the reinforcing steel bars B and the reinforcing steel bars a in the step S5 are arranged in a staggered manner.
Further, the reinforcing steel bars A and the reinforcing steel bars B are high-toughness strong steel bars of 65 MN.
Further, in the step S1, the two strip steel blanks are both put into hydrochloric acid solution with the concentration of 60 g-130 g/L for acid cleaning.
Further, in the step S4, the annealing temperature of the two prefabricated strip steels is controlled at 680-850 ℃.
Furthermore, the compression-resistant reinforcing plate is a steel plate electroplated with a Re-Cr alloy coating, and the thickness of the compression-resistant reinforcing plate is 1-2 mm.
Further, in the step S11, the surface of the reinforced strip steel is cleaned by a purging device, and the pressure range of the purging air is 0.6 Mpa-0.9 Mpa.
The invention has the advantages that: the invention provides a processing technology of a pressure-resistant high-carbon galvanized strip steel, which comprises the following steps: firstly, preparing two strip steel blanks, and pickling the two strip steel blanks; spraying and washing the two strip steel blanks subjected to acid washing by the hydrochloric acid solution through clear water, and drying the strip steel blanks through drying equipment after removing residual acid on the surface; respectively rolling the gauge block strip steel blanks into prefabricated strip steel with the thickness of 1 mm-2.5 mm by a rolling mill; the method comprises the steps of chemically cleaning rolled measuring prefabricated strip steel, cleaning two strip steel blanks by using an electrolytic cleaning agent, placing the two strip steel in an annealing furnace for annealing, unfolding and flatly paving the two strip steel on a workbench, placing a proper number of reinforcing steel bars at the upper end of one of the strip steel, and keeping a gap between the reinforcing steel bars A The compression-resistant reinforcing plates are integrally connected, the connection strength is high, the stripping and falling phenomena are not easy to occur, and the compression strength of the double-layer steel strip and the double-layer reinforcing steel strip is greatly increased, so that the quality of the steel strip and the compression strength of the steel strip are obviously and stably enhanced, the mechanical strength of the steel strip can be greatly improved, and the long-term use under the complex environment is met.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly specified or limited, the terms "central," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an orientation or positional relationship that is merely used to facilitate the description of the invention and to simplify the description, but does not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be taken as limiting the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
the invention provides a processing technology of a pressure-resistant high-carbon galvanized strip steel, which comprises the following steps:
s1, firstly, preparing two strip steel blanks, and pickling the two strip steel blanks;
s2, carrying out spray washing on the two strip steel blanks subjected to the acid washing by the hydrochloric acid solution through clear water, removing residual acid on the surfaces, and drying the strip steel blanks through drying equipment;
s3, rolling the gauge block strip steel blanks into prefabricated strip steel with the thickness of 1mm through a rolling mill respectively;
s4, chemically cleaning the rolled measuring strip prefabricated strip steel, cleaning two strip steel blanks by using an electrolytic cleaning agent, and then placing the two strip steel blanks into an annealing furnace for annealing;
s5, spreading and flatly paving two prefabricated strip steels on a workbench, placing a proper number of reinforcing steel bars at the upper end of one of the prefabricated strip steels, reserving gaps among the reinforcing steel bars A, pressing the reinforcing steel bars A through a compression joint device, and heating the prefabricated strip steels to enable the reinforcing steel bars A and the prefabricated strip steels to form an integral structure;
s6, placing the compression-resistant reinforcing plate at the upper end of the reinforcing steel bar, and forming an integral structure between the compression-resistant reinforcing plate and the reinforcing steel bar A through a compression joint device;
s7, placing a proper number of reinforcing steel bars B at the upper end of the reinforcing plate, keeping gaps between the reinforcing steel bars B, pressing the reinforcing steel bars B through a compression joint device, and heating the prefabricated steel strip to enable the reinforcing steel bars B and the prefabricated steel strip to form an integral structure;
s8, placing another prefabricated steel strip above the reinforced steel strip B, and pressing the prefabricated steel strip and the reinforced steel strip B through a crimping device to form an integral structure between the reinforced steel strip B and the prefabricated steel strip;
s9, transferring the steel strip into an annealing furnace for annealing after compression molding, taking out the steel strip and transferring the steel strip to a rolling mill for finish rolling to obtain reinforced steel strip with the thickness of 8 mm;
s10, cleaning the surface of the reinforced strip steel and then carrying out hot galvanizing processing on the reinforced strip steel;
and S11, cooling the reinforced strip steel subjected to hot galvanizing processing, cleaning the surface of the reinforced strip steel, curling the reinforced strip steel finished product into a bundle, and finally packaging and warehousing.
The processing technology of the high-carbon galvanized steel strip provided by the invention innovatively adopts a double-layer galvanized steel strip mode, realizes integral connection among the reinforcing steel strip, the steel strip and the compression-resistant reinforcing plate, has high connection strength, is not easy to peel off, and greatly increases the compression strength of the double-layer steel strip and the double-layer reinforcing steel strip, thereby obviously and stably reinforcing the quality of the steel strip and the compression strength of the steel strip, greatly improving the mechanical strength of the steel strip and meeting the requirement of long-term use in a complex environment.
Example 2:
the invention provides a processing technology of a pressure-resistant high-carbon galvanized strip steel, which is characterized in that an electrolytic cleaning agent of DT-102CL is used in a chemical cleaning step in the step S4, before the strip steel is chemically cleaned, a free alkali concentration of 100g/l and a temperature of 40 ℃ are prepared in an alkali liquor pre-preparation tank, in the cleaning step, the free alkali concentration is 2g/l, iron powder of 150ppm and an oil content of 40 ℃ are controlled to be 200ppm, a nylon fiber brush roll is used for brushing the strip steel, the rotation direction of the brush roll is opposite to that of the strip steel, in the electrolytic cleaning step, the free alkali concentration is controlled to be 10g/l, the temperature is 65 ℃, the oil content is controlled to be 500ppm, and particularly, the processing method for hot galvanizing on reinforced strip steel in the step S10 comprises the following steps: the reinforced strip steel is heated in the reducing atmosphere in the heating section of the hot galvanizing equipment, so that a thin layer of iron oxide on the surface of the reinforced strip steel is fully reduced, then the reinforced strip steel passes through a soaking section and a cooling section of the hot galvanizing equipment, so that the reinforced strip steel enters a zinc pot for galvanizing at a process temperature suitable for galvanizing, when the reinforced strip steel is galvanized in the step S10, the tension value of the reinforced strip steel in a zinc pot cooling tower of the hot galvanizing process section is controlled to be 7kN, the hardness range of a coating roller in the hot galvanizing equipment is adjusted to be 35HA, the hot galvanizing equipment is suitable for hot galvanizing products with extremely thin strip steel specifications, and the roughness and the plate width difference of a cold hard substrate of the hot galvanizing are controlled, the cleaned strip steel can enter an induction heating furnace through an inlet sealing section in hot galvanizing equipment, is heated to about 680 ℃ in the reducing atmosphere of an induction heating section, fully reduces the thin-layer iron oxide on the surface of the strip steel, and the heating temperature of the strip steel is adjusted according to the variety and the thickness of the strip steel so as to adapt to the galvanizing temperature requirements of the strip steel with different specifications.
Example 3:
the invention provides a processing technology of a pressure-resistant high-carbon galvanized steel strip, wherein reinforcing steel bars A in a step S5 are vertically arranged at the upper end of a prefabricated steel strip in parallel, the intervals between the reinforcing steel bars A are the same, reinforcing steel bars B in a step S7 are vertically arranged at the upper end of a pressure-resistant reinforcing plate in parallel, the intervals between the reinforcing steel bars are the same, the reinforcing steel bars B and the reinforcing steel bars A in a step S5 are arranged in a staggered mode, the reinforcing steel bars A and the reinforcing steel bars B both adopt high-toughness 65MN steel bars, two steel strip blanks in the step S1 are put into hydrochloric acid solution with the concentration of 90g/L for acid washing, the annealing temperature of the two prefabricated steel strips in the step S4 is controlled to be 800 ℃, and preferably, when the step S4 anneals the two prefabricated steel strips, protective gas is introduced into annealing equipment, the protective gas is water vapor, alcohol gas, nitrogen, ammonia decomposition hydrogen protection and the like, oxygen can be isolated under the protective atmosphere, the protective atmosphere can be used as a heat transfer medium, uniform heating of the annealing material is facilitated, the protective gas used in the annealing process preferably adopts nitrogen, the annealing process step in the step S4 is divided into two stages, the first stage is a heating stage, the temperature rises to 700 ℃, the heating time is 8 hours, and the strip steel is swept under the condition that the flow of the protective gas is 38 cubic meters per hour; the second stage is a heat preservation stage after heating is finished, the temperature is reduced to 350 ℃, the heat preservation time is 10 hours, and purging is carried out under the condition that the flow of protective gas is 9 cubic meters per hour, the upper end of the pressure-resistant reinforcing plate can be covered with a pressure-resistant layer, the pressure-resistant layer can be made of a pressure-resistant alloy metal material, and the pressure-resistant alloy metal material mainly comprises the following components in parts by weight: 70 parts of iron, 5 parts of carbon, 0.3 part of magnesium and 0.2 part of niobium; 0.12 part of zinc and 0.35 part of nitrogen, wherein the pressure resistance of the strip steel can be further improved, the surface of the reinforced strip steel is cleaned through a purging device in the step S11, the purging air pressure range is 0.9Mpa, when the strip steel is purged, an externally arranged purging controller can obtain the laminar cooling temperature and the target strip steel coiling temperature through an upper industrial control computer, the initial purging strength is corrected through a strength compensation coefficient to obtain the purging strength, the purging controller selectively controls the opening and closing of the nozzle groups according to the purging strength, and each nozzle group in the purging device can be gradually opened and the residual water on the surface of the strip steel is observed until the residual water on the surface of the strip steel is completely purged after the strip steel passes through the surface purifying device; for example, firstly opening a group of nozzles, if the surface of the strip steel is still provided with residual water after passing through the surface purifying device, opening a group of nozzles for observing again until the surface of the strip steel is completely purged after passing through the surface purifying device, and finally determining the number of the opened nozzle groups corresponding to the laminar cooling temperature, wherein the compression-resistant reinforcing plate is a steel plate plated with a Re-Cr alloy coating, and the thickness of the compression-resistant reinforcing plate is 1.5 mm.
The processing technology of the pressure-resistant high-carbon galvanized steel strip adopts a double-layer galvanized steel strip mode, realizes integral connection among the reinforced steel strip, the steel strip and the pressure-resistant reinforcing plate, has high connection strength, is not easy to peel off, and greatly increases the pressure resistance of the double-layer steel strip and the double-layer reinforced steel strip, thereby obviously and stably reinforcing the quality of the steel strip and the pressure resistance of the steel strip, greatly improving the mechanical strength of the steel strip and meeting the requirement of long-term use in a complex environment, and the specific comparison table of the embodiment is as follows:
| elongation percentage | Yield strength | Compressive strength | |
| Example one | 42％ | 280MPa | 420MPa |
| Example two | 45％ | 260MPa | 450MPa |
| EXAMPLE III | 39％ | 310MPa | 480MPa |
The working mode is as follows: the invention provides a processing technology of pressure-resistant high-carbon galvanized steel strip, which comprises the steps of preparing two steel strip blanks, pickling the two steel strip blanks, washing the two steel strip blanks pickled by hydrochloric acid solution by clean water in a spraying manner, drying the steel strip blanks by drying equipment after removing residual acid on the surface, rolling gauge block steel strip blanks into prefabricated steel strips with the thickness of 1mm by a rolling mill, chemically cleaning the rolled gauge strip prefabricated steel strips, cleaning the two steel strip blanks by using an electrolytic cleaning agent, placing the two prefabricated steel strips in an annealing furnace for annealing, unfolding and flatly laying the two prefabricated steel strips on a workbench, placing a proper number of reinforcing steel strips at the upper end of one of the prefabricated steel strips, leaving gaps among the reinforcing steel strips A, and crimping the reinforcing steel strips A by a crimping device, the crimping equipment adopts the conventional automatic crimping equipment in the market, belongs to the prior art, heats the prefabricated steel strip after crimping the reinforced steel strip to enable the reinforced steel strip A and the prefabricated steel strip to form an integrated structure, places the compression-resistant reinforcing plate at the upper end of the reinforced steel strip, enables the compression-resistant reinforcing plate and the reinforced steel strip A to form an integrated structure through the crimping device, places a proper amount of reinforced steel strips B at the upper end of the reinforcing plate with gaps between the reinforced steel strips B, presses the reinforced steel strips B through the crimping device, heats the prefabricated steel strip to enable the reinforced steel strip B and the prefabricated steel strip to form an integrated structure, places another prefabricated steel strip above the reinforced steel strip B, presses the prefabricated steel strip and the reinforced steel strip B through the crimping device to enable the reinforced steel strip B and the prefabricated steel strip to form an integrated structure, transferring the reinforced strip steel into an annealing furnace for annealing after press forming, then transferring the reinforced strip steel onto a rolling mill for finish rolling after taking out the reinforced strip steel to obtain reinforced strip steel with the thickness of 8mm, cleaning the surface of the reinforced strip steel, then carrying out hot galvanizing processing on the reinforced strip steel, cooling the reinforced strip steel after the hot galvanizing processing, cleaning the surface of the reinforced strip steel, then crimping the reinforced strip steel finished product into a bundle, and finally packaging and warehousing.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A processing technology of a pressure-resistant high-carbon galvanized strip steel is characterized by comprising the following steps:
s1, firstly, preparing two strip steel blanks, and pickling the two strip steel blanks;
s2, carrying out spray washing on the two strip steel blanks subjected to the acid washing by the hydrochloric acid solution through clear water, removing residual acid on the surfaces, and drying the strip steel blanks through drying equipment;
s3, rolling the gauge block strip steel blanks into prefabricated strip steel with the thickness of 1 mm-2.5 mm through a rolling mill respectively;
s4, chemically cleaning the rolled measuring strip prefabricated strip steel, cleaning two strip steel blanks by using an electrolytic cleaning agent, and then placing the two strip steel blanks into an annealing furnace for annealing;
s5, spreading and flatly paving two prefabricated strip steels on a workbench, placing a proper number of reinforcing steel bars at the upper end of one of the prefabricated strip steels, reserving gaps among the reinforcing steel bars A, pressing the reinforcing steel bars A through a compression joint device, and heating the prefabricated strip steels to enable the reinforcing steel bars A and the prefabricated strip steels to form an integral structure;
s6, placing the compression-resistant reinforcing plate at the upper end of the reinforcing steel bar A, and forming an integral structure between the compression-resistant reinforcing plate and the reinforcing steel bar A through a compression joint device;
s7, placing a proper number of reinforcing steel bars B at the upper end of the reinforcing plate, keeping gaps between the reinforcing steel bars B, pressing the reinforcing steel bars B through a compression joint device, and heating the prefabricated steel strip to enable the reinforcing steel bars B and the prefabricated steel strip to form an integral structure;
s8, placing another prefabricated steel strip above the reinforced steel strip B, and pressing the prefabricated steel strip and the reinforced steel strip B through a crimping device to form an integral structure between the reinforced steel strip B and the prefabricated steel strip;
s9, transferring the steel strip into an annealing furnace for annealing after compression molding, taking out the steel strip and transferring the steel strip to a rolling mill for finish rolling to obtain reinforced strip steel with the thickness of 3-8.5 mm;
s10, cleaning the surface of the reinforced strip steel and then carrying out hot galvanizing processing on the reinforced strip steel;
and S11, cooling the reinforced strip steel subjected to hot galvanizing processing, cleaning the surface of the reinforced strip steel, curling the reinforced strip steel finished product into a bundle, and finally packaging and warehousing.
2. The processing technology of the pressure-resistant high-carbon galvanized steel strip as claimed in claim 1, characterized by comprising the following steps of: in the step S10, the reinforcing strip steel is hot-galvanized by passing through a heating section in the hot-galvanizing equipment, and the reinforcing strip steel is heated in a reducing atmosphere in the heating section, so that a thin layer of iron oxide on the surface of the reinforcing strip steel is sufficiently reduced, and then the reinforcing strip steel passes through a soaking section and a cooling section in the hot-galvanizing equipment, so that the reinforcing strip steel enters a zinc pot at a process temperature suitable for galvanizing to be galvanized.
3. The processing technology of the pressure-resistant high-carbon galvanized steel strip as claimed in claim 2, characterized by comprising the following steps of: in the step S10, when the reinforced strip steel is galvanized, the tension value of the reinforced strip steel in the zinc pot cooling tower of the hot galvanizing process section needs to be controlled to be 4-8 kN, and the hardness of the coating roller in the hot galvanizing equipment is adjusted to be 35 HA-55 HA.
4. The processing technology of the pressure-resistant high-carbon galvanized steel strip as claimed in claim 1, characterized by comprising the following steps of: the reinforcing steel bars A in the step S5 are vertically arranged at the upper end of the prefabricated steel strip in parallel, and the intervals between the reinforcing steel bars A are the same.
5. The processing technology of the pressure-resistant high-carbon galvanized steel strip as claimed in claim 1, characterized by comprising the following steps of: the reinforcing steel bars B in the step S7 are vertically arranged at the upper end of the pressure-resistant reinforcing plate in parallel, the intervals between the reinforcing steel bars are the same, and the reinforcing steel bars B and the reinforcing steel bars A in the step S5 are arranged in a staggered manner.
6. The processing technology of the pressure-resistant high-carbon galvanized steel strip as claimed in any one of claims 4 to 5, characterized by comprising the following steps of: the reinforcing steel bars A and the reinforcing steel bars B are high-toughness 65MN high-strength steel bars.
7. The processing technology of the pressure-resistant high-carbon galvanized steel strip as claimed in claim 1, characterized by comprising the following steps of: and in the step S1, the two strip steel blanks are both put into hydrochloric acid solution with the concentration of 60 g/L-130 g/L for acid cleaning.
8. The processing technology of the pressure-resistant high-carbon galvanized steel strip as claimed in claim 1, characterized by comprising the following steps of: in the step S4, the annealing temperature of the two prefabricated strip steels is controlled at 680-850 ℃.
9. The processing technology of the pressure-resistant high-carbon galvanized steel strip as claimed in claim 1, characterized by comprising the following steps of: the compression-resistant reinforcing plate is a steel plate plated with a Re-Cr alloy plating layer, and the thickness of the compression-resistant reinforcing plate is 1-2 mm.
10. The processing technology of the pressure-resistant high-carbon galvanized steel strip as claimed in claim 1, characterized by comprising the following steps of: and in the step S11, the surface of the reinforced strip steel is cleaned through a purging device, and the pressure range of purging air is 0.6-0.9 MPa.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116857859A (en) * | 2023-07-04 | 2023-10-10 | 浙江康利德科技股份有限公司 | Production method of energy-saving type drying filter for refrigerator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116857859A (en) * | 2023-07-04 | 2023-10-10 | 浙江康利德科技股份有限公司 | Production method of energy-saving type drying filter for refrigerator |
| CN116857859B (en) * | 2023-07-04 | 2024-03-15 | 浙江康利德科技股份有限公司 | Production method of energy-saving type drying filter for refrigerator |
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