CN113634599A - Industrial continuous production method of high-efficiency non-oriented silicon steel ultra-thin strip - Google Patents
Industrial continuous production method of high-efficiency non-oriented silicon steel ultra-thin strip Download PDFInfo
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- CN113634599A CN113634599A CN202110876533.6A CN202110876533A CN113634599A CN 113634599 A CN113634599 A CN 113634599A CN 202110876533 A CN202110876533 A CN 202110876533A CN 113634599 A CN113634599 A CN 113634599A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0269—Cleaning
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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
- C21D1/30—Stress-relieving
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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
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0057—Coiling the rolled product
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- 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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- Mechanical Engineering (AREA)
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- Materials Engineering (AREA)
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Abstract
The invention discloses an industrial continuous production method of a high-efficiency non-oriented silicon steel ultra-thin strip, which comprises the working procedures of asynchronous rolling, degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering, reeling and collecting; wherein the asynchronous ratio in the asynchronous rolling is 1: 1.05-1: 1.24; degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering, and coiling and collecting are continuous production processes; in the heat treatment process, the first step is preheating, the preheating temperature is 500-720 ℃, and the preheating time is 20-125 seconds; the second step is phase change heat treatment, wherein the temperature of the phase change heat treatment is 840-940 ℃, and the time of the phase change heat treatment is 100-600 seconds; in the rapid cooling step, the temperature of the steel strip is reduced to 350 ℃ or lower within 30 seconds. The method has the advantages that the industrial continuous production of the non-oriented silicon steel ultra-thin strip is realized, the productivity is effectively improved, and the produced non-oriented silicon steel ultra-thin strip has the magnetic properties of high magnetic induction, low iron loss and the like.
Description
The technical field is as follows:
the invention relates to the field of metallurgical plastic processing, in particular to an industrial continuous production method of a high-efficiency non-oriented silicon steel ultra-thin strip.
Background art:
the non-oriented silicon steel is mainly used as an iron core material of various motors, and along with the increasing efficiency of the motors, in order to reduce the energy loss of the motors during operation, the iron loss of the non-oriented silicon steel needs to be reduced; currently, reducing the thickness of the finished product becomes one of the main methods for realizing the low iron loss of the non-oriented silicon steel.
At present, the industrial production of the oriented silicon steel ultra-thin strip adopts batch production, has low yield and can not meet the market demand.
The invention content is as follows:
the invention aims to provide an industrial continuous production method for preparing a high-efficiency non-oriented silicon steel ultra-thin strip with low iron loss through industrial continuous production.
The invention is implemented by the following technical scheme that the industrial continuous production method of the high-efficiency non-oriented silicon steel ultra-thin strip comprises the working procedures of asynchronous rolling, degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering, coiling and collecting; wherein the asynchronous ratio in the asynchronous rolling is 1: 1.05-1: 1.24; degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering, and coiling and collecting are continuous production processes; in the heat treatment process, the first step is preheating, the preheating temperature is 500-720 ℃, and the preheating time is 20-125 seconds; the second step is phase change heat treatment, wherein the temperature of the phase change heat treatment is 840-940 ℃, and the time of the phase change heat treatment is 100-600 seconds; in the rapid cooling process, the temperature of the steel strip is reduced to below 350 ℃ within 30 seconds; .
Preferably, the asynchronous ratio in the asynchronous rolling process is 1: 1.07-1: 1.20.
Preferably, the target thickness of the asynchronous rolling of the silicon steel ultra-thin strip is 0.05 mm-0.145 mm.
Preferably, in the step of coating the insulating layer, the thickness of the insulating layer is less than 0.003 mm.
Preferably, in the drying, sintering and coiling collection process, the collection is carried out by matching the operation speed of the heat treatment process.
Compared with the prior art, the method has the advantages that the industrial continuous production of the non-oriented silicon steel ultra-thin strip is realized, the productivity is effectively improved, and the produced non-oriented silicon steel ultra-thin strip has the magnetic properties of high magnetic induction, low iron loss and the like; the asynchronous rolling is utilized, the large reduction is realized, the rolling thinning capability is greatly improved, and the plate shape is good and the precision is high; the fluctuation of the belt thickness is less than 0.002mm, the lamination coefficient of the prepared finished product reaches more than 97 percent, and the air gap loss of the motor core is reduced; the equivalent deformation of the high-efficiency non-oriented silicon steel after asynchronous rolling is larger than the non-asynchronous rolling deformation, and the magnetic performance of the high-efficiency non-oriented silicon steel ultra-thin strip finished product is improved.
The specific implementation mode is as follows:
embodiment 1, an industrial continuous production method of a high-efficiency non-oriented silicon steel strip, which uses a non-oriented silicon steel strip with a thickness of 0.35mm without a coating as a base material and cuts the base material into a steel strip with a width of less than 300 mm; sequentially carrying out the procedures of asynchronous rolling, degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering, reeling and collecting; wherein the asynchronous ratio in asynchronous rolling is 1:1.07, and the target thickness of the silicon steel ultra-thin strip in asynchronous rolling is 0.05 mm; degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering and winding collection are continuous production processes; in the degreasing process, grease on the surface of the silicon steel ultrathin strip is removed, so that the surface of the silicon steel ultrathin strip is grease-free and bright; in the heat treatment process, the first step is preheating, the preheating temperature is 500-600 ℃, and the preheating time is 20-60 seconds; the second step is phase change heat treatment, wherein the temperature of the phase change heat treatment is 880 +/-3 ℃, and the time of the phase change heat treatment is 100-300 seconds; in the rapid cooling process, the temperature of the steel strip is reduced to below 350 ℃ within 30 seconds; in the insulating layer coating procedure, the thickness of the insulating layer coating is less than 0.003 mm; in the drying, sintering and coiling and collecting processes, the collection is carried out by matching the operation speed of the heat treatment process.
Embodiment 2, an industrial continuous production method of a high-efficiency non-oriented silicon steel strip, which uses a non-oriented silicon steel strip with a thickness of 0.35mm without a coating as a base material and cuts the base material into a steel strip with a width of less than 300 mm; sequentially carrying out the procedures of asynchronous rolling, degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering, reeling and collecting; wherein the asynchronous ratio in asynchronous rolling is 1:1.15, and the target thickness of the silicon steel ultra-thin strip in asynchronous rolling is 0.08 mm; degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering and winding collection are continuous production processes; in the degreasing process, grease on the surface of the silicon steel ultrathin strip is removed, so that the surface of the silicon steel ultrathin strip is grease-free and bright; in the heat treatment process, the first step is preheating, the preheating temperature is 500-600 ℃, and the preheating time is 20-80 seconds; the second step is phase transformation heat treatment, wherein the temperature of the phase transformation heat treatment is 910 +/-3 ℃, and the time of the phase transformation heat treatment is 100-300 seconds; in the rapid cooling step, the temperature of the steel strip is reduced to 350 ℃ or lower within 30 seconds.
Embodiment 3, an industrial continuous production method of a high-efficiency non-oriented silicon steel strip, which uses a non-oriented silicon steel strip with a thickness of 0.35mm without a coating as a base material and cuts the base material into a steel strip with a width of less than 300 mm; sequentially carrying out the procedures of asynchronous rolling, degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering, reeling and collecting; wherein the asynchronous ratio in asynchronous rolling is 1:1.18, and the target thickness of the silicon steel ultra-thin strip in asynchronous rolling is 0.1 mm; degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering and winding collection are continuous production processes; in the degreasing process, grease on the surface of the silicon steel ultrathin strip is removed, so that the surface of the silicon steel ultrathin strip is grease-free and bright; in the heat treatment process, the first step is preheating, the preheating temperature is 550-650 ℃, and the preheating time is 40-100 seconds; the second step is phase change heat treatment, wherein the temperature of the phase change heat treatment is 935 +/-3 ℃, and the time of the phase change heat treatment is 150-350 seconds; in the rapid cooling step, the temperature of the steel strip is reduced to 350 ℃ or lower within 30 seconds.
Embodiment 4, an industrial continuous production method of a high-efficiency non-oriented silicon steel strip, which uses a non-oriented silicon steel strip with a thickness of 0.35mm without a coating as a base material and cuts the base material into a steel strip with a width of less than 300 mm; sequentially carrying out the procedures of asynchronous rolling, degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering, reeling and collecting; wherein the asynchronous ratio in asynchronous rolling is 1:1.20, and the target thickness of the silicon steel ultra-thin strip in asynchronous rolling is 0.145 mm; degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering and winding collection are continuous production processes; in the degreasing process, grease on the surface of the silicon steel ultrathin strip is removed, so that the surface of the silicon steel ultrathin strip is grease-free and bright; in the heat treatment process, the first step is preheating, the preheating temperature is 600-700 ℃, and the preheating time is 60-120 seconds; the second step is phase transformation heat treatment, wherein the temperature of the phase transformation heat treatment is 940 +/-3 ℃, and the time of the phase transformation heat treatment is 250-500 seconds; in the rapid cooling step, the temperature is reduced to 350 ℃ or lower within 30 seconds.
In the application of the embodiment of the invention, the asynchronous ratio and the heat treatment process parameters are adjusted, so that the magnetic performance of the high-efficiency non-oriented silicon steel ultrathin strip is obviously improved. Saturation induction reaches 1.8T (Tesla) at 1500HZ, and a support option is provided for manufacturing high-power, high-speed, small-volume and light-weight high-end motors.
Claims (5)
1. The industrial continuous production method of the high-efficiency non-oriented silicon steel ultra-thin strip is characterized by comprising the working procedures of asynchronous rolling, degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering, reeling and collecting; wherein the asynchronous ratio in the asynchronous rolling is 1: 1.05-1: 1.24; degreasing, heat treatment, quick cooling, insulating layer coating, drying and sintering, and coiling and collecting are continuous production processes; in the heat treatment process, the first step is preheating, the preheating temperature is 500-720 ℃, and the preheating time is 20-125 seconds; the second step is phase change heat treatment, wherein the temperature of the phase change heat treatment is 840-940 ℃, and the time of the phase change heat treatment is 100-600 seconds; in the rapid cooling step, the temperature of the steel strip is reduced to 350 ℃ or lower within 30 seconds.
2. The industrial continuous production method of the high-efficiency non-oriented silicon steel ultra-thin strip is characterized in that the asynchronous ratio in the asynchronous rolling process is 1: 1.07-1: 1.20.
3. The industrial continuous production method of the high-efficiency non-oriented silicon steel ultra-thin strip as claimed in any one of claims 1 or 2, wherein the target thickness of the silicon steel ultra-thin strip in the asynchronous rolling is 0.05mm to 0.145 mm.
4. The method for industrially and continuously producing the high-efficiency non-oriented silicon steel ultra-thin strip as claimed in claim 1, wherein the thickness of the insulating coating is less than 0.003mm in the insulating layer coating process.
5. The method of claim 1, wherein the collection is performed at a speed corresponding to the operation speed of the heat treatment process during the steps of baking, sintering, coiling and collecting.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003082414A (en) * | 2001-09-11 | 2003-03-19 | Nippon Steel Corp | Equipment and method for continuous heat treatment of cold-rolled plate of non-oriented silicon steel sheet |
| CN1709643A (en) * | 2005-07-06 | 2005-12-21 | 东北大学 | Method for manufacturing low-iron-loss cold-rolled orientation free silicon steel plate using asynchronous rolling process |
| CN105238996A (en) * | 2015-11-20 | 2016-01-13 | 武汉钢铁(集团)公司 | Cold-rolled thin strip non-oriented silicon steel with thickness of 0.2 and production method thereof |
| CN107058874A (en) * | 2017-06-01 | 2017-08-18 | 东北大学 | A kind of method that non-oriented silicon steel with high magnetic induction thin slab product is prepared based on thin strap continuous casting |
| CN107164690A (en) * | 2017-06-01 | 2017-09-15 | 东北大学 | The method that one kind prepares the flourishing texture non-orientation silicon steel thin belt in { 100 } face based on thin strap continuous casting |
| CN209680797U (en) * | 2019-03-27 | 2019-11-26 | 包头市慧宇硅钢科技有限公司 | A kind of production system of very thin oriented silicon steel band |
-
2021
- 2021-07-31 CN CN202110876533.6A patent/CN113634599B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003082414A (en) * | 2001-09-11 | 2003-03-19 | Nippon Steel Corp | Equipment and method for continuous heat treatment of cold-rolled plate of non-oriented silicon steel sheet |
| CN1709643A (en) * | 2005-07-06 | 2005-12-21 | 东北大学 | Method for manufacturing low-iron-loss cold-rolled orientation free silicon steel plate using asynchronous rolling process |
| CN105238996A (en) * | 2015-11-20 | 2016-01-13 | 武汉钢铁(集团)公司 | Cold-rolled thin strip non-oriented silicon steel with thickness of 0.2 and production method thereof |
| CN107058874A (en) * | 2017-06-01 | 2017-08-18 | 东北大学 | A kind of method that non-oriented silicon steel with high magnetic induction thin slab product is prepared based on thin strap continuous casting |
| CN107164690A (en) * | 2017-06-01 | 2017-09-15 | 东北大学 | The method that one kind prepares the flourishing texture non-orientation silicon steel thin belt in { 100 } face based on thin strap continuous casting |
| CN209680797U (en) * | 2019-03-27 | 2019-11-26 | 包头市慧宇硅钢科技有限公司 | A kind of production system of very thin oriented silicon steel band |
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