CN112522488A - Manufacturing process of steel coil - Google Patents
Manufacturing process of steel coil Download PDFInfo
- Publication number
- CN112522488A CN112522488A CN202011296866.3A CN202011296866A CN112522488A CN 112522488 A CN112522488 A CN 112522488A CN 202011296866 A CN202011296866 A CN 202011296866A CN 112522488 A CN112522488 A CN 112522488A
- Authority
- CN
- China
- Prior art keywords
- steel coil
- steel
- rolling
- annealing
- temperature
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
-
- 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
-
- 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
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
-
- 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
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
Abstract
The invention discloses a manufacturing process of a steel coil, which comprises the following steps: firstly, putting steel into a heating furnace for heating, then discharging the heated steel billet out of the furnace, descaling with high-pressure water, then sending the descaling steel billet obtained in the above steps into a roughing mill for rolling, then sending the descaling steel billet into a finishing mill group for rolling, rapidly carrying out laminar cooling after rolling, then curling into a high-strength steel hot-rolled steel coil, and then sending the high-strength steel hot-rolled steel coil obtained in the above steps into an annealing furnace. By adopting the manufacturing process designed by the invention, the internal stress is small and the plate shape is good when the decoiler unit is decoiled, the original steel coil cooling mode after hot rolling is changed, the steel coil is freely stored and cooled and is subjected to heat treatment by the annealing furnace, the temperature of the steel coil is slowly cooled, the internal stress of high-strength steel is eliminated, and the steel coil with good plate shape is obtained.
Description
Technical Field
The invention relates to the technical field of steel coils, in particular to a manufacturing process of a steel coil.
Background
The steel coil, also known as coil steel, steel hot pressing, cold press forming are the roll-type, in order to make things convenient for storage and transportation, conveniently carry out various processing, but its corrosion resisting property of current steel coil is relatively poor, can not satisfy people's user demand, and then has reduced its practicality, so we have promoted the preparation technology of a steel coil that corrosion resisting property is strong.
Disclosure of Invention
The invention aims to provide a steel coil manufacturing process, which has the advantage of strong corrosion resistance, and solves the problems that the existing steel coil has poor corrosion resistance, cannot meet the use requirements of people and further reduces the practicability, so that the steel coil manufacturing process with strong corrosion resistance is provided.
In order to achieve the purpose, the invention provides the following technical scheme: a manufacturing process of a steel coil comprises the following steps:
preparing a billet:
putting the steel into a heating furnace for heating, and then taking the heated steel billet out of the furnace for descaling by high-pressure water;
(II) rolling steel coils:
sending the descaled steel billet obtained in the step into a roughing mill for rolling, then sending the descaled steel billet into a finishing mill group for rolling, quickly carrying out laminar cooling after rolling, and then curling into a high-strength steel hot-rolled steel coil;
and (III) annealing stress relief treatment:
feeding the high-strength steel hot-rolled steel coil prepared in the step into an annealing furnace, carrying out heat preservation annealing, and then cooling to room temperature to prepare a high-strength steel coil;
(IV) galvanizing treatment:
hot galvanizing treatment is carried out on the high-strength steel coil prepared in the step in a ceramic zinc pot, and then the high-strength steel coil is straightened by an air knife blowing, air cooling, water quenching and cooling, primary hot air drying, four-roller wet finishing machine finishing, secondary hot air drying and two-bending and one-straightening stretch-bending straightening machine in sequence to obtain a galvanized steel coil;
(V) post-treatment:
and passivating and curing the galvanized steel coil prepared in the step, then performing fingerprint-resistant coating treatment, performing oil coating treatment by using an electrostatic oiling machine after the galvanized steel coil passes through an outlet loop to obtain an oil-coated galvanized steel coil, and then performing slitting, coiling, coil unloading, weighing, packaging, marking, warehousing and storing on the oil-coated galvanized steel coil to finish the preparation work of the steel coil.
Preferably, the temperature of the heating furnace in the first step is kept at 1200-1500 ℃, and the heating time is controlled to be 0.5-1.5 h.
Preferably, the rough rolling temperature in the second step is maintained at 900-.
Preferably, the temperature of the first annealing zone of the annealing furnace in the third step is 700-8000 ℃, the temperature of the second annealing zone is 800-850 ℃, the temperature of the third annealing zone is 790-830 ℃, the temperature of the fourth annealing zone is 780-820 ℃, and the time for the high-strength hot-rolled steel coil to pass through the first annealing zone, the second annealing zone, the third annealing zone and the fourth annealing zone is 1: 2-3: 3-4: 2-3.
Preferably, the galvanizing solution in the fourth step contains 0.8-1.2wt% of aluminum, and the temperature during drying is controlled at 180-300 ℃.
Compared with the prior art, the invention has the following beneficial effects:
by adopting the manufacturing process designed by the invention, the internal stress is small and the plate shape is good when the decoiler unit is decoiled, the original steel coil cooling mode after hot rolling is changed, the steel coil is freely stored and cooled and is subjected to heat treatment by the annealing furnace, the temperature of the steel coil is slowly cooled, the internal stress of high-strength steel is eliminated, and the steel coil with good plate shape is obtained.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The invention provides a technical scheme that:
a manufacturing process of a steel coil comprises the following steps:
preparing a billet:
putting the steel into a heating furnace for heating, and then taking the heated steel billet out of the furnace for descaling by high-pressure water;
(II) rolling steel coils:
sending the descaled steel billet obtained in the step into a roughing mill for rolling, then sending the descaled steel billet into a finishing mill group for rolling, quickly carrying out laminar cooling after rolling, and then curling into a high-strength steel hot-rolled steel coil;
and (III) annealing stress relief treatment:
feeding the high-strength steel hot-rolled steel coil prepared in the step into an annealing furnace, carrying out heat preservation annealing, and then cooling to room temperature to prepare a high-strength steel coil;
(IV) galvanizing treatment:
hot galvanizing treatment is carried out on the high-strength steel coil prepared in the step in a ceramic zinc pot, and then the high-strength steel coil is straightened by an air knife blowing, air cooling, water quenching and cooling, primary hot air drying, four-roller wet finishing machine finishing, secondary hot air drying and two-bending and one-straightening stretch-bending straightening machine in sequence to obtain a galvanized steel coil;
(V) post-treatment:
and passivating and curing the galvanized steel coil prepared in the step, then performing fingerprint-resistant coating treatment, performing oil coating treatment by using an electrostatic oiling machine after the galvanized steel coil passes through an outlet loop to obtain an oil-coated galvanized steel coil, and then performing slitting, coiling, coil unloading, weighing, packaging, marking, warehousing and storing on the oil-coated galvanized steel coil to finish the preparation work of the steel coil.
The first embodiment is as follows:
firstly, putting steel into a heating furnace for heating, then discharging the heated steel billet out of the furnace, descaling with high-pressure water, then sending the descaling steel billet obtained in the above steps into a roughing mill for rolling, then sending the steel billet into a finishing mill for rolling, rapidly carrying out laminar cooling after rolling, then curling into a high-strength steel hot-rolled steel coil, then sending the high-strength steel hot-rolled steel coil obtained in the above steps into an annealing furnace, carrying out heat preservation annealing, then cooling to room temperature to obtain a high-strength steel coil, then carrying out hot galvanizing treatment on the high-strength steel coil obtained in the above steps in a ceramic zinc pot, then carrying out air knife blowing, air cooling, water quenching and cooling, primary hot air drying, four-roll wet finishing, secondary hot air drying, two-bending and one-straightening drawing bending machine straightening to obtain a galvanized steel coil, finally carrying out passivation treatment and curing treatment on the galvanized steel coil obtained in the above steps, and then carrying out fingerprint-resistant coating treatment, and after the steel coil passes through the outlet loop, an electrostatic oiling machine is used for oiling to obtain an oiled galvanized steel coil, and then the oiled galvanized steel coil is subjected to slitting, coiling, coil stripping, weighing, packaging, marking, warehousing and storage to complete the preparation work of the steel coil.
Example two:
in the first embodiment, the following steps are added:
the temperature of the heating furnace in the first step is kept at 1200-1500 ℃, and the heating time is controlled to be 0.5-1.5 h.
Firstly, putting steel into a heating furnace for heating, then discharging the heated steel billet out of the furnace, descaling with high-pressure water, then sending the descaling steel billet obtained in the above steps into a roughing mill for rolling, then sending the steel billet into a finishing mill for rolling, rapidly carrying out laminar cooling after rolling, then curling into a high-strength steel hot-rolled steel coil, then sending the high-strength steel hot-rolled steel coil obtained in the above steps into an annealing furnace, carrying out heat preservation annealing, then cooling to room temperature to obtain a high-strength steel coil, then carrying out hot galvanizing treatment on the high-strength steel coil obtained in the above steps in a ceramic zinc pot, then carrying out air knife blowing, air cooling, water quenching and cooling, primary hot air drying, four-roll wet finishing, secondary hot air drying, two-bending and one-straightening drawing bending machine straightening to obtain a galvanized steel coil, finally carrying out passivation treatment and curing treatment on the galvanized steel coil obtained in the above steps, and then carrying out fingerprint-resistant coating treatment, and after the steel coil passes through the outlet loop, an electrostatic oiling machine is used for oiling to obtain an oiled galvanized steel coil, and then the oiled galvanized steel coil is subjected to slitting, coiling, coil stripping, weighing, packaging, marking, warehousing and storage to complete the preparation work of the steel coil.
Example three:
in the second embodiment, the following steps are added:
the rough rolling temperature in the second step is kept at 900-1000 ℃, the temperature is kept at 700-850 ℃ during static rolling, and the rolling operation can be carried out when the temperature is reduced to 300-500 ℃ during cooling.
Firstly, putting steel into a heating furnace for heating, then discharging the heated steel billet out of the furnace, descaling with high-pressure water, then sending the descaling steel billet obtained in the above steps into a roughing mill for rolling, then sending the steel billet into a finishing mill for rolling, rapidly carrying out laminar cooling after rolling, then curling into a high-strength steel hot-rolled steel coil, then sending the high-strength steel hot-rolled steel coil obtained in the above steps into an annealing furnace, carrying out heat preservation annealing, then cooling to room temperature to obtain a high-strength steel coil, then carrying out hot galvanizing treatment on the high-strength steel coil obtained in the above steps in a ceramic zinc pot, then carrying out air knife blowing, air cooling, water quenching and cooling, primary hot air drying, four-roll wet finishing, secondary hot air drying, two-bending and one-straightening drawing bending machine straightening to obtain a galvanized steel coil, finally carrying out passivation treatment and curing treatment on the galvanized steel coil obtained in the above steps, and then carrying out fingerprint-resistant coating treatment, and after the steel coil passes through the outlet loop, an electrostatic oiling machine is used for oiling to obtain an oiled galvanized steel coil, and then the oiled galvanized steel coil is subjected to slitting, coiling, coil stripping, weighing, packaging, marking, warehousing and storage to complete the preparation work of the steel coil.
Example four:
in the third embodiment, the following steps are added:
the temperature of the first annealing area of the annealing furnace in the third step is 700-8000 ℃, the temperature of the second annealing area is 800-850 ℃, the temperature of the third annealing area is 790-830 ℃, the temperature of the fourth annealing area is 780-820 ℃, and the time for the high-strength steel hot rolled steel coil to pass through the first annealing area, the second annealing area, the third annealing area and the fourth annealing area is 1: 2-3: 3-4: 2-3.
Firstly, putting steel into a heating furnace for heating, then discharging the heated steel billet out of the furnace, descaling with high-pressure water, then sending the descaling steel billet obtained in the above steps into a roughing mill for rolling, then sending the steel billet into a finishing mill for rolling, rapidly carrying out laminar cooling after rolling, then curling into a high-strength steel hot-rolled steel coil, then sending the high-strength steel hot-rolled steel coil obtained in the above steps into an annealing furnace, carrying out heat preservation annealing, then cooling to room temperature to obtain a high-strength steel coil, then carrying out hot galvanizing treatment on the high-strength steel coil obtained in the above steps in a ceramic zinc pot, then carrying out air knife blowing, air cooling, water quenching and cooling, primary hot air drying, four-roll wet finishing, secondary hot air drying, two-bending and one-straightening drawing bending machine straightening to obtain a galvanized steel coil, finally carrying out passivation treatment and curing treatment on the galvanized steel coil obtained in the above steps, and then carrying out fingerprint-resistant coating treatment, and after the steel coil passes through the outlet loop, an electrostatic oiling machine is used for oiling to obtain an oiled galvanized steel coil, and then the oiled galvanized steel coil is subjected to slitting, coiling, coil stripping, weighing, packaging, marking, warehousing and storage to complete the preparation work of the steel coil.
Example five:
in the fourth example, the following steps were added:
the galvanizing solution in the fourth step comprises 0.8-1.2wt% of aluminum, and the temperature during drying is controlled at 180 ℃ and 300 ℃.
Firstly, putting steel into a heating furnace for heating, then discharging the heated steel billet out of the furnace, descaling with high-pressure water, then sending the descaling steel billet obtained in the above steps into a roughing mill for rolling, then sending the steel billet into a finishing mill for rolling, rapidly carrying out laminar cooling after rolling, then curling into a high-strength steel hot-rolled steel coil, then sending the high-strength steel hot-rolled steel coil obtained in the above steps into an annealing furnace, carrying out heat preservation annealing, then cooling to room temperature to obtain a high-strength steel coil, then carrying out hot galvanizing treatment on the high-strength steel coil obtained in the above steps in a ceramic zinc pot, then carrying out air knife blowing, air cooling, water quenching and cooling, primary hot air drying, four-roll wet finishing, secondary hot air drying, two-bending and one-straightening drawing bending machine straightening to obtain a galvanized steel coil, finally carrying out passivation treatment and curing treatment on the galvanized steel coil obtained in the above steps, and then carrying out fingerprint-resistant coating treatment, and after the steel coil passes through the outlet loop, an electrostatic oiling machine is used for oiling to obtain an oiled galvanized steel coil, and then the oiled galvanized steel coil is subjected to slitting, coiling, coil stripping, weighing, packaging, marking, warehousing and storage to complete the preparation work of the steel coil.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A manufacturing process of a steel coil is characterized in that: the method comprises the following steps:
preparing a billet:
putting the steel into a heating furnace for heating, and then taking the heated steel billet out of the furnace for descaling by high-pressure water;
(II) rolling steel coils:
sending the descaled steel billet obtained in the step into a roughing mill for rolling, then sending the descaled steel billet into a finishing mill group for rolling, quickly carrying out laminar cooling after rolling, and then curling into a high-strength steel hot-rolled steel coil;
and (III) annealing stress relief treatment:
feeding the high-strength steel hot-rolled steel coil prepared in the step into an annealing furnace, carrying out heat preservation annealing, and then cooling to room temperature to prepare a high-strength steel coil;
(IV) galvanizing treatment:
hot galvanizing treatment is carried out on the high-strength steel coil prepared in the step in a ceramic zinc pot, and then the high-strength steel coil is straightened by an air knife blowing, air cooling, water quenching and cooling, primary hot air drying, four-roller wet finishing machine finishing, secondary hot air drying and two-bending and one-straightening stretch-bending straightening machine in sequence to obtain a galvanized steel coil;
(V) post-treatment:
and passivating and curing the galvanized steel coil prepared in the step, then performing fingerprint-resistant coating treatment, performing oil coating treatment by using an electrostatic oiling machine after the galvanized steel coil passes through an outlet loop to obtain an oil-coated galvanized steel coil, and then performing slitting, coiling, coil unloading, weighing, packaging, marking, warehousing and storing on the oil-coated galvanized steel coil to finish the preparation work of the steel coil.
2. The manufacturing process of a steel coil according to claim 1, characterized in that: the temperature of the heating furnace in the first step is kept at 1200-1500 ℃, and the heating time is controlled to be 0.5-1.5 h.
3. The manufacturing process of a steel coil according to claim 1, characterized in that: the rough rolling temperature in the second step is kept at 900-1000 ℃, the temperature is kept at 700-850 ℃ during static rolling, and the rolling operation can be carried out when the temperature is reduced to 300-500 ℃ during cooling.
4. The manufacturing process of a steel coil according to claim 1, characterized in that: the temperature of the first annealing area of the annealing furnace in the third step is 700-8000 ℃, the temperature of the second annealing area is 800-850 ℃, the temperature of the third annealing area is 790-830 ℃, the temperature of the fourth annealing area is 780-820 ℃, and the time for the high-strength steel hot rolled steel coil to pass through the first annealing area, the second annealing area, the third annealing area and the fourth annealing area is 1: 2-3: 3-4: 2-3.
5. The manufacturing process of a steel coil according to claim 1, characterized in that: the galvanizing solution in the fourth step comprises 0.8-1.2wt% of aluminum, and the temperature during drying is controlled at 180 ℃ and 300 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011296866.3A CN112522488A (en) | 2020-11-18 | 2020-11-18 | Manufacturing process of steel coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011296866.3A CN112522488A (en) | 2020-11-18 | 2020-11-18 | Manufacturing process of steel coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112522488A true CN112522488A (en) | 2021-03-19 |
Family
ID=74981182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011296866.3A Pending CN112522488A (en) | 2020-11-18 | 2020-11-18 | Manufacturing process of steel coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112522488A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839322A (en) * | 2012-09-13 | 2012-12-26 | 首钢总公司 | Hot galvanizing steel plate for car and production method thereof |
| CN105088070A (en) * | 2015-06-24 | 2015-11-25 | 河北钢铁股份有限公司承德分公司 | Method for producing 380MPa-grade wheel steel |
| CN106435105A (en) * | 2016-12-01 | 2017-02-22 | 浙江东南金属薄板有限公司 | Preparation method of hot-dip-galvanizing steel coil |
| CN109576467A (en) * | 2019-01-08 | 2019-04-05 | 邯郸钢铁集团有限责任公司 | Improve the control method of the logical volume performance uniformity of low-alloy high-strength steel containing Nb |
| CN111235480A (en) * | 2020-03-17 | 2020-06-05 | 本钢板材股份有限公司 | Preparation method of high-strength steel coil |
-
2020
- 2020-11-18 CN CN202011296866.3A patent/CN112522488A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839322A (en) * | 2012-09-13 | 2012-12-26 | 首钢总公司 | Hot galvanizing steel plate for car and production method thereof |
| CN105088070A (en) * | 2015-06-24 | 2015-11-25 | 河北钢铁股份有限公司承德分公司 | Method for producing 380MPa-grade wheel steel |
| CN106435105A (en) * | 2016-12-01 | 2017-02-22 | 浙江东南金属薄板有限公司 | Preparation method of hot-dip-galvanizing steel coil |
| CN109576467A (en) * | 2019-01-08 | 2019-04-05 | 邯郸钢铁集团有限责任公司 | Improve the control method of the logical volume performance uniformity of low-alloy high-strength steel containing Nb |
| CN111235480A (en) * | 2020-03-17 | 2020-06-05 | 本钢板材股份有限公司 | Preparation method of high-strength steel coil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100486758C (en) | Method for manufacturing low-iron-loss cold-rolled orientation free silicon steel plate using asynchronous rolling process | |
| RU2012126097A (en) | METHOD FOR PRODUCING A STRIP FROM ELECTRICAL STEEL WITH ORIENTED GRAIN AND THE ELECTROTECHNICAL STEEL WITH ORIENTED GRAIN OBTAINED THIS WAY | |
| CN102102141B (en) | Hot rolling process for improving structural homogeneity of oriented silicon steel plate | |
| CN102688884A (en) | Rolling process of limit-specification steel plate of 2800mm double-stand heavy and medium plate mill | |
| CN106244967B (en) | Cold-rolling of steel plate coating integration produces unit and its production technology | |
| CN100369712C (en) | Method for manufacturing low-iron-loss cold-rolled orientation free silicon steel plate | |
| CN108517395A (en) | A kind of cold rolling non-oriented electrical steel band and preparation method thereof | |
| CN106734197B (en) | A kind of manufacturing method solving technical pure titanium plate cold rolling roll banding | |
| US3843422A (en) | Rolling method for producing silicon steel strip | |
| CN109082607A (en) | A kind of non-orientation silicon steel and its hot continuous rolling process | |
| CN102345051A (en) | Steel for bridge and production method thereof | |
| CN101767106B (en) | Hot rolling process of stainless plate strip coil | |
| CN114173957B (en) | Production of deep drawable steel strip in a casting and rolling complex | |
| CN112522488A (en) | Manufacturing process of steel coil | |
| CN108203788A (en) | A kind of preparation method of the low magnetic anisotropy non-orientation silicon steel of thin strap continuous casting | |
| CN104388652A (en) | Manufacturing method of high-speed steel cold-rolled sheet and high-speed steel cold-rolled sheet | |
| US20070062621A1 (en) | Method and installation for producing hot rolled aluminium tape intended for can making | |
| CN109881115A (en) | A kind of Ti microalloying gapless atomic steel and its manufacturing method | |
| CN112899457B (en) | Heat treatment method capable of replacing high-magnetic induction oriented silicon steel normalizing annealing | |
| CN113215509A (en) | Preparation method of titanium alloy hot-rolled coil | |
| CN106583446B (en) | One kind rolling the ferritic method of IF on semicontinuous rolling | |
| JPS6128725B2 (en) | ||
| WO2019057114A1 (en) | Softening method for high-strength q＆p steel hot roll | |
| CN107034415A (en) | A kind of non-oriented electrical steel and its production method | |
| RU2353442C1 (en) | Method of hot rolling of low-carbon light steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210319 |