CN114959242A - Method for preventing edge damage of supporting roller of continuous annealing unit - Google Patents
Method for preventing edge damage of supporting roller of continuous annealing unit Download PDFInfo
- Publication number
- CN114959242A CN114959242A CN202210589361.9A CN202210589361A CN114959242A CN 114959242 A CN114959242 A CN 114959242A CN 202210589361 A CN202210589361 A CN 202210589361A CN 114959242 A CN114959242 A CN 114959242A
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- China
- Prior art keywords
- edge
- supporting roller
- roll
- roller
- working
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- 238000000137 annealing Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 238000005507 spraying Methods 0.000 claims abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 8
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- 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
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
- C21D9/563—Rolls; Drums; Roll arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- 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
- C23F1/00—Etching metallic material by chemical means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention relates to the technical field of continuous annealing units, in particular to a method for preventing edge damage of a supporting roller of a continuous annealing unit, which comprises the following steps: step one, chamfering and grinding: adding a grinding chamfer with the width of 100 mm and the angle of 1.5 degrees at the edge of the supporting roller; step two, adjusting the convexity: increasing the crown of the work roll to 0.07 mm; step three, spraying leveling liquid: and spraying leveling liquid on the edge of the supporting roller and the edge of the working roller. The invention reduces the contact pressure and abrasion of the harmful contact area at the edge of the supporting roller by chamfering and grinding, avoids the edge damage of the supporting roller, reduces the contact pressure between the working roller and the edge of the supporting roller by increasing the convexity of the working roller to 0.07 mm, reduces the edge abrasion, is convenient for controlling the shape of the plate and increases the service cycle of the working roller. The invention also cleans the backup roll and the working roll by increasing the leveling liquid injection, reduces the temperature of the backup roll and the working roll, increases the lubricating effect of the backup roll and the working roll, and improves the quality of the plate surface.
Description
Technical Field
The invention relates to the technical field of continuous annealing units, in particular to a method for preventing edge damage of a supporting roller of a continuous annealing unit.
Background
The cold plastic deformation of the strip steel after cold treatment has obvious cold work hardening phenomenon and extremely high internal stress, and in order to eliminate the cold work hardening and the internal stress, stabilize the structure and improve the performance of the steel, the cold rolled strip steel needs to be annealed, usually by recrystallization annealing. After the steel is annealed, the technological performance can be improved, and the service performance can be improved, so that the performance potential of the steel can be better exerted.
The annealing of the cold-rolled strip steel is generally divided into slow heating annealing and fast heating annealing. The slow heating annealing is carried out in a hood-type annealing furnace, belongs to an intermittent production mode, the fast heating annealing is carried out in a continuous annealing furnace, and belongs to a continuous production mode.
In the leveler section of the continuous annealing unit, the rolling force of the leveler is larger due to the larger hardness of the plate, so that the edge of the supporting roller of the leveler is easy to bite, the output and quality control of the continuous annealing production line are influenced, the service cycle of the supporting roller of the conventional continuous annealing unit has to be shortened, and the rolling force of the leveler is reduced.
Disclosure of Invention
The invention aims to provide a method for preventing the edge part of a supporting roller of a continuous annealing unit from being damaged so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a method for preventing edge damage of a supporting roller of a continuous annealing unit comprises the following steps:
step one, chamfering and grinding: adding a grinding chamfer with the width of 100 mm and the angle of 1.5 degrees at the edge of the supporting roller;
step two, adjusting the convexity: increasing the crown of the work roll to 0.07 mm;
step three, spraying leveling liquid: and spraying leveling liquid on the edge of the supporting roller and the edge of the working roller.
Optionally, in the third step, the leveling liquid is sprayed out from a nozzle, and the nozzle is a fan-shaped nozzle.
Optionally, in the third step, the temperature of the leveling liquid is 32-40 ℃.
Compared with the prior art, the invention has the following beneficial effects: the invention reduces the contact pressure and abrasion of the harmful contact area at the edge of the supporting roll by chamfering and grinding, avoids the edge damage of the supporting roll, and reduces the contact pressure between the working roll and the edge of the supporting roll and the edge abrasion by increasing the convexity of the working roll to 0.07 mm. In addition, the convexity of the working roll is increased, particularly the later period of the service cycle of the supporting roll, the negative convexity caused by the abrasion of the supporting roll can be compensated, the plate shape control is facilitated, and the service cycle of the working roll is increased. The invention also cleans the backup roll and the working roll by increasing the leveling liquid injection, reduces the temperature of the backup roll and the working roll, increases the lubricating effect of the backup roll and the working roll, and improves the quality of the plate surface.
Drawings
FIG. 1 is a schematic view of a chamfer structure according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.
Example (b): the invention provides a method for preventing edge damage of a supporting roller of a continuous annealing unit, which comprises the following steps:
step one, chamfering and grinding: adding a grinding chamfer with the width of 100 mm and the angle of 1.5 degrees at the edge of the supporting roller;
step two, adjusting the convexity: increasing the convexity of the work roll to 0.07 mm;
step three, spraying leveling liquid: and spraying leveling liquid on the edge of the supporting roller and the edge of the working roller.
On the basis of the above embodiments, the temperature of the leveling liquid in this embodiment is 32-40 ℃, and the leveling liquid is sprayed out from a nozzle, which is a fan-shaped nozzle.
Referring to FIG. 1, A in FIG. 1 is 100 mm and β is 1.5 °.
The invention reduces the contact pressure and abrasion of the harmful contact area at the edge of the supporting roll by chamfering and grinding, avoids the edge damage of the supporting roll, and reduces the contact pressure between the working roll and the edge of the supporting roll and the edge abrasion by increasing the convexity of the working roll to 0.07 mm. In addition, the convexity of the working roll is increased, particularly the later period of the service cycle of the supporting roll, the negative convexity caused by the abrasion of the supporting roll can be compensated, the plate shape control is facilitated, and the service cycle of the working roll is increased. The invention also cleans the backup roll and the working roll by increasing the leveling liquid injection, reduces the temperature of the backup roll and the working roll, increases the lubricating effect of the backup roll and the working roll, and improves the quality of the plate surface.
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 (3)
1. A method for preventing edge damage of a supporting roller of a continuous annealing unit is characterized by comprising the following steps: comprises the following steps:
step one, chamfering and grinding: a grinding chamfer with the width of 100 mm and the angle of 1.5 degrees is added at the edge of the supporting roll;
step two, adjusting the convexity: increasing the crown of the work roll to 0.07 mm;
step three, spraying leveling liquid: and spraying leveling liquid on the edge of the supporting roller and the edge of the working roller.
2. The method for preventing the edge damage of the supporting roller of the continuous annealing unit as claimed in claim 1, wherein: and in the third step, the leveling liquid is sprayed out from a nozzle, and the nozzle is a fan-shaped nozzle.
3. The method for preventing the edge damage of the supporting roller of the continuous annealing unit as claimed in claim 1, wherein: in the third step, the temperature of the leveling liquid is 32-40 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210589361.9A CN114959242A (en) | 2022-05-27 | 2022-05-27 | Method for preventing edge damage of supporting roller of continuous annealing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210589361.9A CN114959242A (en) | 2022-05-27 | 2022-05-27 | Method for preventing edge damage of supporting roller of continuous annealing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114959242A true CN114959242A (en) | 2022-08-30 |
Family
ID=82955419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210589361.9A Pending CN114959242A (en) | 2022-05-27 | 2022-05-27 | Method for preventing edge damage of supporting roller of continuous annealing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114959242A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH071003A (en) * | 1993-06-14 | 1995-01-06 | Kawasaki Steel Corp | Manufacture of cold rolled stainless steel strip |
| KR19990017267U (en) * | 1997-10-31 | 1999-05-25 | 이구택 | Wear compensation device of rolling mill support roll |
| CN202021201U (en) * | 2011-01-29 | 2011-11-02 | 首钢总公司 | Roll contour configuration structure of hot rolling temper mill |
| CN102319750A (en) * | 2011-08-18 | 2012-01-18 | 中冶南方工程技术有限公司 | Water spray leveling method in cold milling wet leveling production |
| CN203830430U (en) * | 2013-09-29 | 2014-09-17 | 上海梅山钢铁股份有限公司 | Online efficient sweeping device of cold rolling temper mill |
| US20170080467A1 (en) * | 2015-09-21 | 2017-03-23 | Novelis Inc. | Pre-heating and thermal control of work rolls in metal rolling processes and control systems thereof |
| CN107604302A (en) * | 2013-10-15 | 2018-01-19 | 大日本印刷株式会社 | Metallic plate, the manufacture method of metallic plate and the method using metallic plate manufacture deposition mask |
-
2022
- 2022-05-27 CN CN202210589361.9A patent/CN114959242A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH071003A (en) * | 1993-06-14 | 1995-01-06 | Kawasaki Steel Corp | Manufacture of cold rolled stainless steel strip |
| KR19990017267U (en) * | 1997-10-31 | 1999-05-25 | 이구택 | Wear compensation device of rolling mill support roll |
| CN202021201U (en) * | 2011-01-29 | 2011-11-02 | 首钢总公司 | Roll contour configuration structure of hot rolling temper mill |
| CN102319750A (en) * | 2011-08-18 | 2012-01-18 | 中冶南方工程技术有限公司 | Water spray leveling method in cold milling wet leveling production |
| CN203830430U (en) * | 2013-09-29 | 2014-09-17 | 上海梅山钢铁股份有限公司 | Online efficient sweeping device of cold rolling temper mill |
| CN107604302A (en) * | 2013-10-15 | 2018-01-19 | 大日本印刷株式会社 | Metallic plate, the manufacture method of metallic plate and the method using metallic plate manufacture deposition mask |
| US20170080467A1 (en) * | 2015-09-21 | 2017-03-23 | Novelis Inc. | Pre-heating and thermal control of work rolls in metal rolling processes and control systems thereof |
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