CN113621866A - Manufacturing method of supporting roll for rolling battery pole piece - Google Patents
Manufacturing method of supporting roll for rolling battery pole piece Download PDFInfo
- Publication number
- CN113621866A CN113621866A CN202110730773.5A CN202110730773A CN113621866A CN 113621866 A CN113621866 A CN 113621866A CN 202110730773 A CN202110730773 A CN 202110730773A CN 113621866 A CN113621866 A CN 113621866A
- Authority
- CN
- China
- Prior art keywords
- steel
- tempering
- roller
- pole piece
- battery pole
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- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000005096 rolling process Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 238000005496 tempering Methods 0.000 claims abstract description 26
- 238000007670 refining Methods 0.000 claims abstract description 16
- 238000003754 machining Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 11
- 238000005242 forging Methods 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 238000000137 annealing Methods 0.000 claims abstract description 8
- 238000010791 quenching Methods 0.000 claims description 13
- 230000000171 quenching effect Effects 0.000 claims description 13
- 238000004321 preservation Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000009628 steelmaking Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 abstract description 9
- 230000008023 solidification Effects 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000012797 qualification Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 8
- 230000007547 defect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
Abstract
The invention relates to the technical field of roller manufacturing, in particular to a method for manufacturing a supporting roller for rolling a battery pole piece; adding chemical components and weight percentage in the refined steel, refining by adopting an LF/VD refining furnace, removing impurities, removing gas in molten steel, and pouring into steel ingots; forging a steel ingot, performing stress relief annealing treatment, and performing rough machining to obtain a roller blank; carrying out thermal refining on the rough-machined roller blank, tempering the roller blank after thermal refining, and carrying out finish machining according to the required size after tempering is finished to manufacture a battery pole piece supporting roller; the invention improves the solidification quality of steel ingots, the flaw detection qualification rate of the roller and the accident resistance of the roller.
Description
Technical Field
The invention relates to the technical field of roller manufacturing, in particular to a method for manufacturing a supporting roller for rolling a battery pole piece.
Background
Along with the development of the battery industry, the battery pole piece is used as an important component of the battery, the demand is continuously increased, the accident resistance of a user to a roller is more and more important, the C content in the material is in a higher range because the battery pole piece supporting roller is required to have higher hardness, and the hardness of the supporting roller required by the user is more than 70HSD, so that the problems of poor solidification quality of steel ingots, poor toughness and plasticity of products and the like caused by the high C content are solved.
Disclosure of Invention
Aiming at the problems, the invention aims to improve the solidification quality and the toughness and the plasticity of a steel ingot, and simultaneously meet the use requirements of users, the accident resistance and the like.
In order to achieve the purpose, the invention provides the following technical scheme:
a manufacturing method of a supporting roll for rolling a battery pole piece comprises the following steps:
step 1, steel refining: adding chemical components and weight percentage in the steel to reach the required steel making range, refining by adopting an LF/VD refining furnace, removing impurities by using a reduction method, vacuumizing by VD to remove gas in molten steel, and pouring into steel ingots;
step 2, forging and heat treatment after forging: forging the steel ingot in the step 1, performing stress relief annealing treatment at the stress relief annealing temperature of 600-800 ℃, and performing rough machining to obtain a roller blank;
and 3, final heat treatment: quenching and tempering the roller blank after rough machining in the step 2, wherein the quenching and tempering heat preservation temperature is 850-950 ℃, and the heat preservation time is 20-30 h; tempering the roll blank after the quenching and tempering treatment, wherein the tempering temperature is 350-500 ℃, the heat preservation time is 30-40h, and finish machining is carried out according to the required size after the tempering is finished to manufacture the battery pole piece roll.
The technical scheme of the invention is further improved as follows: the steel comprises the following chemical components in percentage by weight: 0.55-0.70% of C; 0.35 to 0.50 percent of Si; 0.25-0.35% of Mn; 1.7-2.1% of Cr; 0.20-0.50% of Mo; ni is less than or equal to 0.30 percent; s is less than or equal to 0.025 percent; p is less than or equal to 0.025 percent; the balance of Fe and a small amount of impurities.
Compared with the prior art, the manufacturing method of the support roll for rolling the battery pole piece has the following beneficial effects:
1. the invention provides a method for manufacturing a supporting roller for rolling a battery pole piece, which reduces the content of C element in the original material and improves the content of Si in the original material; particularly, the C content is reduced, so that the solidification quality of the steel billet is greatly improved, the Si content is improved, the strength of a steel ingot matrix is ensured, the solidification quality of the steel billet is improved, the defects of segregation, looseness and the like of a product can be improved, the flaw detection quality of a core part of the product is improved, and finally the roller has better quality and higher accident resistance.
2. The invention provides a method for manufacturing a supporting roller for rolling a battery pole piece, which adjusts the components of the original production material, improves the solidification quality of steel ingots, improves the flaw detection qualification rate of a roller and improves the accident resistance of the roller on the premise of meeting the use requirements of users.
Detailed Description
The technical solution of the present invention will be clearly and completely described by the following detailed description. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the 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.
The rolling method of the supporting roller of the battery pole piece reduces the content of C element in the original material, improves the solidification quality of steel ingots, improves the content of Si in the original material, and ensures the strength of a material matrix; the steel comprises the following chemical components in percentage by weight: 0.55-0.70% of C; 0.35 to 0.50 percent of Si; 0.25-0.35% of Mn; 1.7-2.1% of Cr; 0.20-0.50% of Mo; ni is less than or equal to 0.30 percent; s is less than or equal to 0.025 percent; p is less than or equal to 0.025 percent; the balance of Fe and a small amount of impurities; the solidification quality of steel ingots is improved, the flaw detection qualification rate of the roller is improved, the accident resistance of the roller is improved, and the requirements of users are met; the solidification quality of the steel billet is further improved, the defects of segregation, looseness and the like of the product can be improved, the flaw detection quality of the core of the product is improved, and finally the roller has better quality and higher accident resistance.
Further, the manufacturing method of the supporting roll for rolling the battery pole piece comprises the following steps:
step 1, steel refining: adding chemical components and weight percentage in the steel to reach the required steel making range, refining by adopting an LF/VD refining furnace, removing impurities by using a reduction method, removing gas in molten steel by VD vacuumizing, and pouring into steel ingots;
step 2, forging and heat treatment after forging: forging the steel ingot in the step 1, performing stress relief annealing treatment at the stress relief annealing temperature of 600-800 ℃, and performing rough machining to obtain a roller blank;
and 3, final heat treatment: quenching and tempering the roller blank after rough machining in the step 2, wherein the quenching and tempering heat preservation temperature is 850-950 ℃, and the heat preservation time is 20-30 h; tempering the roll blank after the quenching and tempering treatment, wherein the tempering temperature is 350-500 ℃, the heat preservation time is 30-40h, and finish machining is carried out according to the required size after the tempering is finished to manufacture the battery pole piece supporting roll.
The invention selects the chemical components and the content of steel to be cast into steel billets, and the following table is the chemical components in the steel; (in wt% per unit, the remainder being Fe and a small amount of impurities)
| C | Si | Mn | Cr | Mo | Ni | P | S |
| 0.61 | 0.45 | 0.31 | 1.82 | 1.35 | 0.11 | 0.022 | 0.003 |
Adding the chemical components and the weight percentage of the steel in the table above for refining, refining by adopting an LF/VD refining furnace, removing impurities by using a reduction method, vacuumizing by VD to remove gas in molten steel, and pouring into steel ingots;
the stress-relief annealing temperature of the steel billet is 600-800 ℃, and then rough machining is carried out to obtain a roller billet;
quenching and tempering the rough-machined roller blank, wherein the quenching and heat preservation of the quenching and tempering is 850-950 ℃, and the heat preservation time is 20-30 h; tempering the roll blank after the quenching and tempering treatment, wherein the tempering temperature is 350-500 ℃, the heat preservation time is 30-40h, and finish machining is carried out according to the required size after the tempering is finished to manufacture the battery pole piece supporting roll.
The chemical components and the contents of the steel materials in the table are used for processing the battery pole piece supporting roll, and the Shore hardness tester of the special roll is used for detecting that the surface hardness of the roll body of the battery pole piece supporting roll is 72-74 HSD.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the appended claims.
Claims (2)
1. A method for manufacturing a supporting roll for rolling a battery pole piece is characterized by comprising the following steps:
step 1, steel refining: adding chemical components and weight percentage in the steel to reach the required steel making range, refining by adopting an LF/VD refining furnace, removing impurities by using a reduction method, removing gas in molten steel by VD vacuumizing, and pouring into steel ingots;
step 2, forging and heat treatment after forging: forging the steel ingot in the step 1, performing stress relief annealing treatment at the stress relief annealing temperature of 600-800 ℃, and performing rough machining to obtain a roller blank;
and 3, final heat treatment: quenching and tempering the roller blank after rough machining in the step 2, wherein the quenching and tempering heat preservation temperature is 850-950 ℃, and the heat preservation time is 20-30 h; tempering the roll blank after the quenching and tempering treatment, wherein the tempering temperature is 350-500 ℃, the heat preservation time is 30-40h, and finish machining is carried out according to the required size after the tempering is finished to manufacture the battery pole piece supporting roll.
2. A method for manufacturing a back-up roll for rolling a battery pole piece according to claim 1, characterized in that: the steel comprises the following chemical components in percentage by weight: 0.55-0.70% of C; 0.35 to 0.50 percent of Si; 0.25-0.35% of Mn; 1.7-2.1% of Cr; 0.20-0.50% of Mo; ni is less than or equal to 0.30 percent; s is less than or equal to 0.025 percent; p is less than or equal to 0.025 percent; the balance of Fe and a small amount of impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110730773.5A CN113621866A (en) | 2021-06-30 | 2021-06-30 | Manufacturing method of supporting roll for rolling battery pole piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110730773.5A CN113621866A (en) | 2021-06-30 | 2021-06-30 | Manufacturing method of supporting roll for rolling battery pole piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113621866A true CN113621866A (en) | 2021-11-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110730773.5A Pending CN113621866A (en) | 2021-06-30 | 2021-06-30 | Manufacturing method of supporting roll for rolling battery pole piece |
Country Status (1)
| Country | Link |
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| CN (1) | CN113621866A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535943A (en) * | 2021-12-28 | 2022-05-27 | 中钢集团邢台机械轧辊有限公司 | Preparation method of large pole piece roller |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5686697A (en) * | 1979-12-14 | 1981-07-14 | Hitachi Ltd | Production of working roll for hot rolling |
| CN101186995A (en) * | 2007-10-15 | 2008-05-28 | 莱芜钢铁集团有限公司 | Medium carbon bearing steel and its preparation method |
| CN103397267A (en) * | 2013-07-12 | 2013-11-20 | 中钢集团邢台机械轧辊有限公司 | Cold roll for rolling lithium battery guard plate and manufacturing method thereof |
| CN105239012A (en) * | 2015-10-15 | 2016-01-13 | 中钢集团邢台机械轧辊有限公司 | Semi-high-speed steel cold rolling work roller high in accident resistance and manufacturing method of semi-high-speed steel cold rolling work roller |
| CN108277443A (en) * | 2018-01-29 | 2018-07-13 | 二重（德阳）重型装备有限公司 | 4200mm or more wide and heavy plate mills backing roll and its manufacturing process |
| US20180347019A1 (en) * | 2015-12-04 | 2018-12-06 | Nippon Steel & Sumitomo Metal Corporation | Rolled Rod for Cold-Forged Thermally Refined Article |
| CN112795853A (en) * | 2020-12-16 | 2021-05-14 | 中钢集团邢台机械轧辊有限公司 | Manufacturing method of equal-hardness Cr5 supporting roll |
| CN112853203A (en) * | 2020-12-30 | 2021-05-28 | 中钢集团邢台机械轧辊有限公司 | Cr2 forged steel supporting roll and preparation method thereof |
-
2021
- 2021-06-30 CN CN202110730773.5A patent/CN113621866A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5686697A (en) * | 1979-12-14 | 1981-07-14 | Hitachi Ltd | Production of working roll for hot rolling |
| CN101186995A (en) * | 2007-10-15 | 2008-05-28 | 莱芜钢铁集团有限公司 | Medium carbon bearing steel and its preparation method |
| CN103397267A (en) * | 2013-07-12 | 2013-11-20 | 中钢集团邢台机械轧辊有限公司 | Cold roll for rolling lithium battery guard plate and manufacturing method thereof |
| CN105239012A (en) * | 2015-10-15 | 2016-01-13 | 中钢集团邢台机械轧辊有限公司 | Semi-high-speed steel cold rolling work roller high in accident resistance and manufacturing method of semi-high-speed steel cold rolling work roller |
| US20180347019A1 (en) * | 2015-12-04 | 2018-12-06 | Nippon Steel & Sumitomo Metal Corporation | Rolled Rod for Cold-Forged Thermally Refined Article |
| CN108277443A (en) * | 2018-01-29 | 2018-07-13 | 二重（德阳）重型装备有限公司 | 4200mm or more wide and heavy plate mills backing roll and its manufacturing process |
| CN112795853A (en) * | 2020-12-16 | 2021-05-14 | 中钢集团邢台机械轧辊有限公司 | Manufacturing method of equal-hardness Cr5 supporting roll |
| CN112853203A (en) * | 2020-12-30 | 2021-05-28 | 中钢集团邢台机械轧辊有限公司 | Cr2 forged steel supporting roll and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535943A (en) * | 2021-12-28 | 2022-05-27 | 中钢集团邢台机械轧辊有限公司 | Preparation method of large pole piece roller |
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Application publication date: 20211109 |
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| RJ01 | Rejection of invention patent application after publication |