CN112742897A - Preparation method of corrosion-resistant steel coil - Google Patents
Preparation method of corrosion-resistant steel coil Download PDFInfo
- Publication number
- CN112742897A CN112742897A CN202011527539.4A CN202011527539A CN112742897A CN 112742897 A CN112742897 A CN 112742897A CN 202011527539 A CN202011527539 A CN 202011527539A CN 112742897 A CN112742897 A CN 112742897A
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- CN
- China
- Prior art keywords
- steel strip
- coil
- galvanized
- resistant steel
- corrosion resistant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000010935 stainless steel Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 65
- 239000010959 steel Substances 0.000 claims abstract description 65
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000000137 annealing Methods 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 10
- 238000005097 cold rolling Methods 0.000 claims abstract description 8
- 238000005452 bending Methods 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000005246 galvanizing Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 18
- 239000008397 galvanized steel Substances 0.000 claims description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 238000002791 soaking Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 238000007605 air drying Methods 0.000 claims description 3
- 239000010960 cold rolled steel Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000005554 pickling Methods 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002585 base Substances 0.000 description 7
- 238000003825 pressing Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
-
- 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
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention discloses a preparation method of a corrosion-resistant steel coil, which comprises the following steps: feeding, leveling, welding, acid washing, cleaning, cold rolling, annealing, galvanizing, air cooling, straightening, rolling and warehousing. The invention has the advantages that: according to the preparation method of the corrosion-resistant steel coil, after unreeling, the elastic bending force generated by reeling is eliminated directly through the leveling device, so that the subsequent processes can be stably carried out, the galvanizing effect is improved, and steel bands with different thicknesses can be produced according to the requirements of users.
Description
Technical Field
The invention relates to the technical field of steel strip production equipment, in particular to a preparation method of a corrosion-resistant steel coil.
Background
The steel strip is widely applied to various aspects of production and life as a base material of steel products, has good tensile and bending properties and high wear resistance, but is easily oxidized or corroded due to moisture in the air after being exposed in the air for a long time, and the service life of the steel strip is shortened.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a preparation method of a corrosion-resistant steel coil.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a corrosion-resistant steel coil comprises the following steps:
s1, feeding: putting the non-galvanized steel strip coil into an unreeling machine for unreeling;
s2, leveling: leveling the steel strip by a leveling device to eliminate the bending force of the steel strip;
s3, welding: welding the tail end of the previous roll and the front end of the next roll together by the steel belt through an automatic welding machine;
s4, acid washing: soaking and pickling the welded steel strip by using dilute sulfuric acid to eliminate an oxide layer on the surface of the steel strip;
s5, cleaning: soaking, cleaning or washing the acid-washed steel strip by using clear water or a weak base solution, and removing sulfuric acid attached to the surface of the steel strip;
s6, cold rolling: air-drying the cleaned steel strip, and then placing the steel strip into a cold rolling mill to be rolled into a steel strip with required thickness;
s7, annealing: annealing the cold-rolled steel strip through an annealing furnace;
s8, galvanization: galvanizing the annealed steel strip to form a galvanized layer on the surface of the steel strip;
s9, air cooling: cooling the galvanized steel strip to 265-300 ℃ in an air cooling or air cooling combination mode;
s10, straightening: straightening the cooled galvanized steel strip through straightening equipment to improve the flatness of the galvanized steel strip;
s11, rolling: winding the straightened galvanized steel strip by using a winding machine;
s12, warehousing: and (5) inspecting, packaging, warehousing and storing.
Preferably, in S, the leveling device includes a base plate and a cover plate, the base plate and the cover plate are fixedly connected through a set of lifting cylinders, the upper side of the base plate is provided with a plurality of first grooves, the first grooves are rotatably connected with first rotating shafts, first leveling rollers are sleeved on the outer sides of the first rotating shafts, a plurality of second grooves are arranged on the lower side of the cover plate, the second grooves are arranged opposite to the first grooves, the second grooves are rotatably connected with second rotating shafts, the second leveling rollers are sleeved on the outer sides of the second rotating shafts, and one side of the base plate is fixedly connected with the steel strip unwinding device through a connecting plate.
Preferably, sliding grooves are formed in the side walls of the two sides of the second groove, a sliding block is connected in each sliding groove in a sliding mode, the second rotating shaft rotates between the two sliding blocks, and a push-pull device for controlling the sliding blocks to slide back and forth along the sliding grooves is arranged on one side of each sliding block.
Preferably, each sliding groove top is provided with a yielding hole penetrating through the cover plate, the push-pull device is a push-pull air cylinder, the push-pull air cylinder is fixed to the top of the cover plate, and a piston rod of the push-pull air cylinder penetrates through the yielding hole and is fixedly connected with the sliding block.
Preferably, a guide block is disposed between every two adjacent second leveling rollers, and the guide block is fixed to the lower side of the cover plate.
Preferably, the guide block has a semicircular cross section.
Preferably, one side of the bottom plate is fixedly connected with a first fixing plate, one side of the cover plate is fixedly connected with a second fixing plate, and the lifting cylinder is fixed between the second fixing plate and the first fixing plate.
Preferably, in S7, the annealing furnace is filled with inert gas for protection.
Preferably, in S8, the galvanization process includes the steps of:
step one, soaking the annealed steel strip to be galvanized in a pre-plating pot and then drying;
step two, soaking the steel strip processed in the step one in molten zinc liquid for 4min, and taking out;
and step three, carrying out forced cooling on the galvanized steel strip treated in the step two in a water circulation mode.
The invention has the advantages that: according to the preparation method of the corrosion-resistant steel coil, after unreeling, the elastic bending force generated by reeling is eliminated directly through the leveling device, so that the subsequent processes can be stably carried out, the galvanizing effect is improved, and steel bands with different thicknesses can be produced according to the requirements of users.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic view of the basic structure of the flattening apparatus;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
fig. 4 is a partially enlarged view of fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 1 to 3, the method for preparing a corrosion-resistant steel coil provided by the invention comprises the following steps:
s1, feeding: and putting the non-galvanized steel strip coil into an unreeling machine for unreeling.
S2, leveling: and leveling the steel strip by a leveling device to eliminate the bending force of the steel strip.
S3, welding: and welding the tail end of the previous coil and the front end of the next coil together by the steel belt through an automatic welding machine.
S4, acid washing: and soaking and pickling the welded steel strip by using dilute sulfuric acid to eliminate an oxide layer on the surface of the steel strip.
S5, cleaning: and soaking, cleaning or washing the acid-washed steel strip by using clear water or a weak alkali solution, and removing the sulfuric acid attached to the surface of the steel strip.
S6, cold rolling: and (5) air-drying the cleaned steel strip, and then placing the steel strip into a cold rolling mill for cold rolling to obtain the steel strip with the required thickness.
S7, annealing: annealing the cold-rolled steel strip through an annealing furnace; and inert gas is filled into the annealing furnace for protection.
S8, galvanization: and galvanizing the annealed steel strip to form a galvanized layer on the surface of the steel strip. The galvanizing process comprises the following steps:
step one, soaking the annealed steel strip to be galvanized in a pre-plating pot and then drying;
step two, soaking the steel strip processed in the step one in molten zinc liquid for 4min, and taking out;
and step three, carrying out forced cooling on the galvanized steel strip treated in the step two in a water circulation mode.
S9, air cooling: and cooling the galvanized steel strip to 265-300 ℃ in an air cooling or air cooling combination mode.
S10, straightening: and straightening the cooled galvanized steel strip through straightening equipment to improve the flatness of the galvanized steel strip.
S11, rolling: and winding the straightened galvanized steel strip by using a winding machine.
S12, warehousing: and (5) inspecting, packaging, warehousing and storing.
Foretell leveling device includes bottom plate 1 and apron 2, through a set of lift cylinder 3 fixed connection between bottom plate 1 and the apron 2, 1 one side fixed connection first fixed plate 31 of bottom plate, 2 one side fixed connection second fixed plate 33 of apron, lift cylinder 3 is fixed between second fixed plate 33 and first fixed plate 31. 1 upside of bottom plate is equipped with a plurality of first recesses 11, first rotation axis 12 is connected in the rotation of first recess 11, first flattening roller 13 is cup jointed in the first rotation axis 12 outside 2 downside of apron is equipped with a plurality of second recesses 21, and second recess 21 sets up with first recess 11 relatively, second rotation axis 22 is connected in the rotation of second recess 21, second flattening roller 23 is cup jointed in the second rotation axis 22 outside, 1 one side of bottom plate is through connecting plate fixed connection steel band unwinding device 4, and steel band unwinding device 4 is prior art, no longer gives unnecessary details here.
In use, the steel strip 41 is unreeled by the steel strip unreeling device 4, the steel strip 41 passes through between the first leveling roller 13 and the second leveling roller 23, and the steel strip 41 is leveled by the first leveling roller 13 and the second leveling roller 23, so that the bending force of the steel strip is eliminated. The relative distance between the base plate 1 and the cover plate 2 can be changed by the lifting cylinder 3, so that the size of the gap between the first leveling roller 13 and the second leveling roller 23 is changed, and the steel strip leveling device is suitable for steel strips with different thicknesses.
The side walls of the two sides of the second groove 21 are respectively provided with a sliding groove 12, a sliding block 24 is connected in each sliding groove 12 in a sliding manner, the second rotating shaft 22 rotates between the two sliding blocks 24, and one side of each sliding block 24 is provided with a push-pull device for controlling the sliding block 24 to slide along the sliding groove 12 in a reciprocating manner. Each slide groove 12 top all is equipped with the hole of stepping down 26 that runs through apron 2, the push-and-pull device is push-and-pull cylinder 27, and push-and-pull cylinder 27 is fixed apron 2 top, push-and-pull cylinder 27's piston rod pass from the hole of stepping down 26 and with slider 24 fixed connection. The sliding block 24 is pushed by the push-pull air cylinder 27 to slide back and forth along the sliding chute 12, so that the pressing force of the second leveling rollers 23 on the steel strip is changed, the pressing force of the second leveling rollers 23 on the steel strip is sequentially increased along the moving direction of the steel strip, and the leveling effect is further improved.
Every two adjacent second leveling rollers 23 are provided with a guide block 5 therebetween, and the guide block 5 is fixed to the lower side of the cover plate 2. The guide block 5 is semicircular in cross section. The steel strip can be guided by the guide blocks 5 during the movement of the steel strip, and the steel strip can be conveniently penetrated between the first leveling roller 13 and the second leveling roller 23.
Claims (9)
1. The preparation method of the corrosion-resistant steel coil is characterized by comprising the following steps of:
s1, feeding: putting the non-galvanized steel strip coil into an unreeling machine for unreeling;
s2, leveling: leveling the steel strip by a leveling device to eliminate the bending force of the steel strip;
s3, welding: welding the tail end of the previous roll and the front end of the next roll together by the steel belt through an automatic welding machine;
s4, acid washing: soaking and pickling the welded steel strip by using dilute sulfuric acid to eliminate an oxide layer on the surface of the steel strip;
s5, cleaning: soaking, cleaning or washing the acid-washed steel strip by using clear water or a weak base solution, and removing sulfuric acid attached to the surface of the steel strip;
s6, cold rolling: air-drying the cleaned steel strip, and then placing the steel strip into a cold rolling mill to be rolled into a steel strip with required thickness;
s7, annealing: annealing the cold-rolled steel strip through an annealing furnace;
s8, galvanization: galvanizing the annealed steel strip to form a galvanized layer on the surface of the steel strip;
s9, air cooling: cooling the galvanized steel strip to 265-300 ℃ in an air cooling or air cooling combination mode;
s10, straightening: straightening the cooled galvanized steel strip through straightening equipment to improve the flatness of the galvanized steel strip;
s11, rolling: winding the straightened galvanized steel strip by using a winding machine;
s12, warehousing: and (5) inspecting, packaging, warehousing and storing.
2. The method of manufacturing a corrosion resistant steel coil as claimed in claim 1, wherein: in S2, the leveling device includes bottom plate (1) and apron (2), through a set of lift cylinder (3) fixed connection between bottom plate (1) and apron (2), bottom plate (1) upside is equipped with a plurality of first recess (11), first axis of rotation (12) of first recess (11) internal rotation connection, first flattening roller (13) are cup jointed in first axis of rotation (12) outside apron (2) downside is equipped with a plurality of second recess (21), and second recess (21) set up with first recess (11) relatively, second axis of rotation (22) are connected to second recess (21) internal rotation, second flattening roller (23) are cup jointed in second axis of rotation (22) outside, connecting plate fixed connection steel band unwinding device (4) is passed through to bottom plate (1) one side.
3. The method of manufacturing a corrosion resistant steel coil as claimed in claim 2, wherein: the side walls of two sides of the second groove (21) are respectively provided with a sliding groove (12), each sliding groove (12) is internally connected with a sliding block (24) in a sliding mode, the second rotating shaft (22) rotates between the two sliding blocks (24), and one side of each sliding block (24) is provided with a push-pull device for controlling the sliding block (24) to slide back and forth along the sliding groove (12).
4. The method of making a corrosion resistant steel coil as recited in claim 3, wherein: every spout (12) top all is equipped with the hole of stepping down (26) that runs through apron (2), push-and-pull device is push-and-pull cylinder (27), and push-and-pull cylinder (27) are fixed apron (2) top, the piston rod of push-and-pull cylinder (27) pass from hole of stepping down (26) and with slider (24) fixed connection.
5. The method of manufacturing a corrosion resistant steel coil as claimed in claim 2, wherein: every two adjacent second flattening rollers (23) are provided with guide blocks (5), and the guide blocks (5) are fixed on the lower side of the cover plate (2).
6. The method of making a corrosion resistant steel coil as recited in claim 5, wherein: the cross section of the guide block (5) is semicircular.
7. The method of manufacturing a corrosion resistant steel coil as claimed in claim 2, wherein: the lifting air cylinder is characterized in that one side of the base plate (1) is fixedly connected with a first fixing plate (31), one side of the cover plate (2) is fixedly connected with a second fixing plate (33), and the lifting air cylinder (3) is fixed between the second fixing plate (33) and the first fixing plate (31).
8. The method of manufacturing a corrosion resistant steel coil as claimed in claim 1, wherein: in S7, the annealing furnace is filled with inert gas for protection.
9. The method of manufacturing a corrosion resistant steel coil as claimed in claim 1, wherein: in S8, the process of galvanization includes the steps of:
step one, soaking the annealed steel strip to be galvanized in a pre-plating pot and then drying;
step two, soaking the steel strip processed in the step one in molten zinc liquid for 4min, and taking out;
and step three, carrying out forced cooling on the galvanized steel strip treated in the step two in a water circulation mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011527539.4A CN112742897A (en) | 2020-12-22 | 2020-12-22 | Preparation method of corrosion-resistant steel coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011527539.4A CN112742897A (en) | 2020-12-22 | 2020-12-22 | Preparation method of corrosion-resistant steel coil |
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| Publication Number | Publication Date |
|---|---|
| CN112742897A true CN112742897A (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011527539.4A Pending CN112742897A (en) | 2020-12-22 | 2020-12-22 | Preparation method of corrosion-resistant steel coil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114669975A (en) * | 2022-05-26 | 2022-06-28 | 苏州铜盟电气有限公司 | Copper bar production and processing method based on Internet of things |
| CN114674099A (en) * | 2022-05-27 | 2022-06-28 | 太原晋西春雷铜业有限公司 | Method for treating copper alloy strip after continuous acid production and washing |
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| JP2002339096A (en) * | 2001-05-18 | 2002-11-27 | Nippon Steel Corp | Continuous galvanizing treatment facility and method |
| CN1974836A (en) * | 2006-12-18 | 2007-06-06 | 马鞍山钢铁股份有限公司 | Making process of hot galvanized fingerprint-proof plate |
| CN102776460A (en) * | 2012-03-19 | 2012-11-14 | 江苏大力神科技股份有限公司 | Production method of thin steel strip hot galvanizing |
| CN103103538A (en) * | 2011-11-10 | 2013-05-15 | 攀钢集团研究院有限公司 | Production method of hot dipped steel coil |
| WO2017001283A2 (en) * | 2015-06-29 | 2017-01-05 | Andritz Ag | Device and method for producing a galvanized steel strip |
| CN206474522U (en) * | 2017-01-12 | 2017-09-08 | 广东雅励新材料股份有限公司 | Leveling aluminum plate device |
| CN110358903A (en) * | 2019-07-23 | 2019-10-22 | 常熟市长江不锈钢材料有限公司 | A kind of production technology of hot-galvanized steel band |
| CN209716104U (en) * | 2019-01-21 | 2019-12-03 | 青岛润科精密轧辊有限公司 | A kind of straightening roller balancing device |
-
2020
- 2020-12-22 CN CN202011527539.4A patent/CN112742897A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002339096A (en) * | 2001-05-18 | 2002-11-27 | Nippon Steel Corp | Continuous galvanizing treatment facility and method |
| CN1974836A (en) * | 2006-12-18 | 2007-06-06 | 马鞍山钢铁股份有限公司 | Making process of hot galvanized fingerprint-proof plate |
| CN103103538A (en) * | 2011-11-10 | 2013-05-15 | 攀钢集团研究院有限公司 | Production method of hot dipped steel coil |
| CN102776460A (en) * | 2012-03-19 | 2012-11-14 | 江苏大力神科技股份有限公司 | Production method of thin steel strip hot galvanizing |
| WO2017001283A2 (en) * | 2015-06-29 | 2017-01-05 | Andritz Ag | Device and method for producing a galvanized steel strip |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114669975A (en) * | 2022-05-26 | 2022-06-28 | 苏州铜盟电气有限公司 | Copper bar production and processing method based on Internet of things |
| CN114674099A (en) * | 2022-05-27 | 2022-06-28 | 太原晋西春雷铜业有限公司 | Method for treating copper alloy strip after continuous acid production and washing |
| CN114674099B (en) * | 2022-05-27 | 2022-09-20 | 太原晋西春雷铜业有限公司 | Method for treating copper alloy strip after continuous acid production and washing |
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