CN108034899B - High-speed broad width aluminium foil working roll - Google Patents
High-speed broad width aluminium foil working roll Download PDFInfo
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- CN108034899B CN108034899B CN201711314353.9A CN201711314353A CN108034899B CN 108034899 B CN108034899 B CN 108034899B CN 201711314353 A CN201711314353 A CN 201711314353A CN 108034899 B CN108034899 B CN 108034899B
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
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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
- 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
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/04—Hardening by cooling below 0 degrees Celsius
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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
- C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
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- 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
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- 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
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- 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
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- 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
-
- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Geometry (AREA)
- Metal Rolling (AREA)
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Abstract
The invention discloses a high-speed wide aluminum foil working roll, which belongs to the field of roll preparation, and comprises the chemical components and contents of 0.85-1.05% of C, 0.50-1.10% of Si, 0.20-0.80% of Mn, 1.50-4.0% of Cr, 0.10-0.60% of Mo, less than or equal to 0.60% of Ni and less than or equal to 0.5% of V. The invention improves the hardness and the roughness of the working roll, improves the roughness maintaining capacity of the roll surface of the working roll during high-speed rolling, prolongs the on-machine time of the working roll, and avoids the accidents of slipping, aluminum adhesion and the like, thereby improving the production efficiency and reducing the production cost.
Description
Technical Field
The invention relates to aluminum foil rolling equipment, in particular to a high-speed wide aluminum foil working roll, and belongs to the field of roll preparation.
Background
The aluminum foil is a thin sheet directly rolled by metal aluminum, generally refers to a thin strip material with the thickness of less than or equal to 0.1mm, and is widely applied to the industries of cigarettes, food, medicines, electronics, photographic equipment, daily chemical industry and the like.
The rolling of aluminium foil is demanding in terms of technology and equipment, and the most critical rolling tool in a rolling plant is the roll, the work rolls of which are required to achieve extremely high hardness values and homogeneity. With the continuous development of aluminum foil rolling technology and the improvement of product quality requirements, the requirements on the performance of the roller are changed to a certain extent. The increase in rolling speed and the change in market demand for aluminum foil require rolls having not only high hardness, high uniformity and high brightness of aluminum foil but also high roughness, high roughness-retaining ability and high productivity of medium-rolled aluminum foil.
The roughness is not easy to grind when the roller is ground, the roller surface is seriously abraded when the roller is rolled at high speed, the roughness of the roller surface is rapidly reduced, when the roughness can not meet the requirements of the rolling process, the roller must be taken off the machine to be ground, otherwise, slipping, aluminum adhesion and even fire accidents can be caused. Therefore, the method has important significance for improving the high-roughness grinding performance and the roughness retention capability of the roller.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a high-speed wide aluminum foil working roll which is used for the rolling process of aluminum foils, the hardness and the roughness of the working roll are improved, the roughness maintaining capability of the roll surface of the working roll is further improved, the on-machine time of the working roll is prolonged, accidents such as slipping, aluminum adhesion and the like are avoided, the production efficiency is improved, and the production cost is reduced.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a high-speed broad width aluminium foil work roll which characterized in that: the working roll comprises 0.85-1.05% of C, 0.50-1.10% of Si, 0.20-0.80% of Mn, 1.50-4.0% of Cr1, 0.10-0.60% of Mo0, less than or equal to 0.60% of Ni and less than or equal to 0.5% of V.
The technical scheme of the invention is further improved as follows: the diameter of the working roll is 260-300 mm, and the length of the working roll is 2000-3000 mm; the rolling speed of the working roll is 900-1600 m/min.
The technical scheme of the invention is further improved as follows: the preparation steps comprise spheroidizing annealing and thermal refining.
The technical scheme of the invention is further improved as follows: the working roll is roughly turned, spheroidizing annealing and quenching and tempering are carried out, then oil cooling, tempering treatment, quenching, deep cooling treatment and air cooling are carried out to the room temperature, and finally oil furnace tempering is carried out.
The technical scheme of the invention is further improved as follows: and the spheroidizing annealing is to heat the working roller to 850-950 ℃, then preserve heat for 4-8 h, then air-cool, and preserve heat for 15-25 h after the temperature is reduced to 650-750 ℃.
The technical scheme of the invention is further improved as follows: and the tempering is to heat the working roll to 850-950 ℃ and then keep the temperature for 4-8 h.
The technical scheme of the invention is further improved as follows: the tempering temperature is 550-650 ℃, and the heat preservation time is 8-15 h.
The technical scheme of the invention is further improved as follows: the quenching is carried out in a double medium frequency induction furnace, the scanning heating temperature is 850-950 ℃, and the scanning speed is 24-48 mm/min.
The technical scheme of the invention is further improved as follows: the temperature of the subzero treatment is-150 to-70 ℃, and the time of the subzero treatment is 1 to 5 hours.
The technical scheme of the invention is further improved as follows: the tempering temperature of the oil furnace is 80-150 ℃, and the heat preservation time is 40-100 h.
Due to the adoption of the technical scheme, the invention has the technical progress that:
the invention improves the hardness and the roughness of the working roll, obviously improves the roughness maintaining capability of the roll surface of the working roll during high-speed rolling, prolongs the on-machine time of the working roll, and avoids the accidents of slipping, aluminum adhesion and the like, thereby improving the production efficiency and reducing the production cost.
The invention adjusts the material component content of the high-speed wide aluminum foil working roll and optimizes the process method, thereby improving the hardness and the roughness of the working roll and the holding capacity of the roughness during high-speed rolling. Compared with the components and the content of the traditional material, the material of the working roll increases the metal element vanadium (V), improves the content of the silicon element (Si), the vanadium and the carbon element can generate stable carbon compounds, the silicon plays the role of a reducing agent and a deoxidizing agent in the preparation process of the working roll, the change of the content of the components can be combined to obviously improve the performance of the working roll, and the strength, the toughness, the corrosion resistance, the wear resistance, the impact load bearing capacity and the like of the working roll are improved; the spheroidizing annealing step is added in the preparation process of the working roll, and is matched with quenching and tempering, double medium frequency induction quenching and rapid cooling (cryogenic treatment), so that the working roll reaches the ultimate hardness, the working roll has uniform components and tissues, a large amount of dispersedly distributed carbides are contained in a matrix, and the particle size of the carbides is larger, thereby improving the roughness and the roll shape retention capacity of the working roll, obviously improving the roll surface roughness retention capacity during high-speed rolling and ensuring the smooth running of the rolling process; the on-machine time of the working roll is prolonged, and the off-machine grinding times are reduced, so that the production cost is reduced.
The high-speed wide aluminum foil working roll prepared by the invention is not only suitable for high-speed rolling, but also can obtain aluminum foils with larger width. The length of the working roll is 2000-3000 mm, and a wider aluminum foil product can be rolled; the hardness, the roughness and the like can meet the requirement of the rolling speed of 900-1600 m/min, and the production efficiency is improved.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
a high-speed wide aluminum foil working roll comprises the following chemical components of 0.85-1.05% of C, 0.50-1.10% of Si, 0.20-0.80% of Mn, 1.50-4.0% of Cr1, 0.10-0.60% of Mo0.60%, less than or equal to 0.60% of Ni, less than or equal to 0.5% of V, and the balance of Fe and inevitable impurities; the diameter of the working roll is 260-300 mm, and the length of the working roll is 2000-3000 mm; the rolling speed is 900-1600 m/min.
The preparation steps of the working roll are as follows: preparing a working roll blank according to the chemical components and the content of the material of the working roll, and roughly turning the roll blank; then carrying out spheroidizing annealing and thermal refining, wherein the spheroidizing annealing is to heat the roller blank after rough turning to 850-950 ℃ and keep the temperature for 4-8 h, air cooling is carried out after the heat preservation is finished, the temperature is kept for 15-25 h after the temperature is reduced to 650-750 ℃, then the temperature is raised to 850-950 ℃ and the heat is kept for 4-8 h at the temperature for thermal refining; after the thermal refining is finished, cooling the oil to oil temperature, and then tempering, wherein the tempering temperature is 550-650 ℃, and the tempering heat preservation time is 8-15 h; then quenching heat treatment is carried out, wherein quenching is carried out by using a double medium frequency induction furnace, the scanning heating temperature is 850-950 ℃, and the scanning speed is 24-48 mm/min; carrying out subzero treatment after quenching is finished, wherein the subzero treatment temperature is-150 to-70 ℃, and the heat preservation time is 1 to 5 hours; and after the cryogenic treatment is finished, air cooling to room temperature, and finally performing oil furnace tempering, wherein the tempering temperature is 80-150 ℃, and the heat preservation time is 40-100 h.
Example 1
A high-speed wide aluminum foil working roll, the chemical composition and content that the material of the working roll contains are shown in Table 1, the diameter of the working roll is 260mm, the length of the working roll is 2000 mm; the rolling speed was 900 m/min. The preparation steps of the working roll are as follows: preparing a working roll blank according to the chemical components and the content of the material of the working roll, and roughly turning the roll blank; then spheroidizing annealing and thermal refining are carried out, wherein the spheroidizing annealing is to heat the rough-turned roller blank to 850 ℃ and keep the temperature for 8 hours, air cooling is carried out after the thermal refining is finished, the temperature is kept for 25 hours after the temperature is reduced to 650 ℃, then the temperature is raised to 850 ℃ and kept for 8 hours at the temperature for thermal refining; after the quenching and tempering treatment is finished, cooling the oil to oil temperature, and then tempering, wherein the tempering temperature is 550 ℃, and the tempering heat preservation time is 15 hours; then quenching heat treatment is carried out, wherein quenching is carried out by using a double medium frequency induction furnace, the scanning heating temperature is 950 ℃, and the scanning speed is 24 mm/min; carrying out subzero treatment after quenching, wherein the subzero treatment temperature is-150 ℃, and the heat preservation time is 1 h; air cooling to room temperature after the cryogenic treatment is finished, and finally performing oil furnace tempering, wherein the tempering temperature is 80 ℃, and the heat preservation time is 100 hours.
Example 2
A high-speed wide aluminum foil working roll, the chemical composition and content that the material of the working roll contains are shown in Table 1, the diameter of the working roll is 300mm, the length of the working roll is 3000 mm; the rolling speed was 1600 m/min. The preparation steps of the working roll are as follows: preparing a working roll blank according to the chemical components and the content of the material of the working roll, and roughly turning the roll blank; then spheroidizing annealing and thermal refining are carried out, wherein the spheroidizing annealing is to heat the rough-turned roller blank to 950 ℃ and preserve heat for 4 hours at the temperature, air cooling is carried out after the heat preservation is finished, the heat is preserved for 15 hours after the temperature is reduced to 750 ℃, then the temperature is raised to 950 ℃ and the heat is preserved for 4 hours at the temperature for thermal refining; after the quenching and tempering treatment is finished, cooling the oil to oil temperature, and then tempering, wherein the tempering temperature is 550 ℃, and the tempering heat preservation time is 15 hours; then quenching heat treatment is carried out, wherein quenching is carried out by using a double medium frequency induction furnace, the scanning heating temperature is 850 ℃, and the scanning speed is 48 mm/min; carrying out subzero treatment after quenching, wherein the subzero treatment temperature is-70 ℃, and the heat preservation time is 5 h; air cooling to room temperature after the cryogenic treatment is finished, and finally performing oil furnace tempering, wherein the tempering temperature is 150 ℃, and the heat preservation time is 40 h.
Example 3
A high-speed wide aluminum foil working roll, the chemical composition and content that the material of the working roll contains are shown in Table 1, the diameter of the working roll is 280mm, the length of the working roll is 2400 mm; the rolling speed was 1300 m/min. The preparation steps of the working roll are as follows: preparing a working roll blank according to the chemical components and the content of the material of the working roll, and roughly turning the roll blank; then spheroidizing annealing and thermal refining are carried out, wherein the spheroidizing annealing is to heat the roller blank after rough turning to 900 ℃ and keep the temperature for 6 hours, air cooling is carried out after the thermal refining is finished, the temperature is kept for 20 hours after the temperature is reduced to 700 ℃, then the temperature is raised to 900 ℃ and kept for 6 hours at the temperature for thermal refining; after the thermal refining is finished, cooling the oil to the oil temperature, and then tempering, wherein the tempering temperature is 600 ℃, and the tempering heat preservation time is 10 hours; then quenching heat treatment is carried out, wherein quenching is carried out by using a double medium frequency induction furnace, the scanning heating temperature is 900 ℃, and the scanning speed is 36 mm/min; carrying out subzero treatment after quenching, wherein the subzero treatment temperature is-100 ℃, and the heat preservation time is 3 h; air cooling to room temperature after the cryogenic treatment is finished, and finally performing oil furnace tempering, wherein the tempering temperature is 100 ℃, and the heat preservation time is 60 hours.
Example 4
A high-speed wide aluminum foil working roll, the chemical composition and content that the material of the working roll contains are shown in Table 1, the diameter of the working roll is 270mm, the length of the working roll is 2600 mm; the rolling speed was 1200 m/min. The preparation steps of the working roll are as follows: preparing a working roll blank according to the chemical components and the content of the material of the working roll, and roughly turning the roll blank; then spheroidizing annealing and thermal refining are carried out, wherein the spheroidizing annealing is to heat the roller blank after rough turning to 920 ℃ and preserve heat for 5 hours at the temperature, air cooling is carried out after the heat preservation is finished, the heat is preserved for 21 hours after the temperature is reduced to 730 ℃, then the temperature is raised to 920 ℃ and preserved heat for 7 hours at the temperature for thermal refining; after the thermal refining is finished, cooling the oil to oil temperature, and then tempering, wherein the tempering temperature is 610 ℃, and the tempering heat preservation time is 12 hours; then quenching heat treatment is carried out, wherein quenching is carried out by using a double medium frequency induction furnace, the scanning heating temperature is 930 ℃, and the scanning speed is 40 mm/min; carrying out subzero treatment after quenching, wherein the subzero treatment temperature is-120 ℃, and the heat preservation time is 2 h; air cooling to room temperature after the cryogenic treatment is finished, and finally performing oil furnace tempering, wherein the tempering temperature is 120 ℃, and the heat preservation time is 50 h.
Control test
A high-speed wide aluminum foil working roll, the chemical composition and content that the material of the working roll contains are shown in Table 1, the diameter of the working roll is 270mm, the length of the working roll is 2600 mm; the rolling speed was 1200 m/min. The preparation steps of the working roll are as follows: preparing a working roll blank according to the chemical components and the content of the material of the working roll, and roughly turning the roll blank; then heating to 920 ℃ and preserving the heat for 7 hours at the temperature; then cooling the oil to oil temperature, and tempering at the tempering temperature of 610 ℃ for 12 h; then quenching heat treatment is carried out, wherein quenching is carried out by using a double medium frequency induction furnace, the scanning heating temperature is 930 ℃, and the scanning speed is 40 mm/min; and after quenching, air cooling to room temperature, and finally performing oil furnace tempering, wherein the tempering temperature is 120 ℃, and the heat preservation time is 50 h.
TABLE 1
To illustrate the advantages of the present invention, the work rolls prepared in examples 1-4 and the control (5 work rolls prepared in each example) were tested and the results are shown in Table 2.
TABLE 2
| Example 1 | Example 2 | Example 3 | Example 4 | Control | |
| Hardness (HSD) | 103 | 99 | 105 | 103 | 95 |
| Hardness gradient (HS) | 3 | 5 | 4 | 3 | 12 |
| Carbide content | In general | Multiple purpose | Is larger | Optimization of | Chinese character shao (a Chinese character of 'shao') |
| Carbide particle size | In general | Big (a) | Is larger | Maximum of | Minimum size |
| Roughness value (Ra) | 0.3 | 0.3 | 0.3 | 0.3 | 0.25 |
| Roughness retention ability | In general | Is normal | Is preferably used | Optimization of | Is poor |
From table 2, it can be seen that the average hardness of the high-speed wide aluminum foil working rolls prepared in the embodiments 1 to 4 of the invention is 99 to 105HSD, which is much larger than 95HSD of the control test; the average hardness gradient is 3-5 HS, which is much smaller than the hardness gradient of 12HS in a control test; the roughness value is 0.3, which is greater than 0.25 of the contrast; the carbide content is larger than that of the control, and the carbide particle size is larger than that of the control; the roughness retention was better than the control.
Claims (1)
1. The utility model provides a high-speed broad width aluminium foil work roll which characterized in that: the working roll comprises the chemical components and contents of 0.85-1.05% of C, 0.50-1.10% of Si, 0.20-0.80% of Mn, 1.50-4.0% of Cr, 0.10-0.60% of Mo, less than or equal to 0.60% of Ni, less than or equal to 0.5% of V, and the balance of Fe and inevitable impurities; the diameter of the working roll is 260-300 mm, and the length of the working roll is 2000-3000 mm; the rolling speed of the working roll is 900-1600 m/min;
the preparation steps comprise spheroidizing annealing and thermal refining;
the method comprises the following steps of firstly carrying out rough turning on a working roller, then carrying out spheroidizing annealing and thermal refining, then carrying out oil cooling, tempering, quenching, deep cooling, air cooling to room temperature, and finally carrying out oil furnace tempering;
the spheroidizing annealing is to heat the working roller to 850-950 ℃, then preserve heat for 4-8 h, then air-cool, and preserve heat for 15-25 h after the temperature is reduced to 650-750 ℃; the tempering is to heat the working roll to 850-950 ℃ and then keep the temperature for 4-8 h; the tempering temperature is 550-650 ℃, and the heat preservation time is 8-15 h; the quenching is carried out in a double medium frequency induction furnace, the scanning heating temperature is 850-950 ℃, and the scanning speed is 24-48 mm/min;
the temperature of the subzero treatment is-150 to-70 ℃, and the time of the subzero treatment is 1 to 5 hours; the tempering temperature of the oil furnace is 80-150 ℃, and the heat preservation time is 40-100 h.
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| CN111438187B (en) * | 2020-04-03 | 2022-03-22 | 江苏大亚铝业有限公司 | Production process for preparing aluminum foil for lithium battery by high-hardness roller |
| CN114635089A (en) * | 2022-03-22 | 2022-06-17 | 河北恒韧增材制造有限公司 | Easily-processed high-strength high-toughness high-wear-resistance nitride alloy roller |
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