CN201265027Y - Hot-rolled plate direct heating annealing device - Google Patents
Hot-rolled plate direct heating annealing device Download PDFInfo
- Publication number
- CN201265027Y CN201265027Y CNU2008202181162U CN200820218116U CN201265027Y CN 201265027 Y CN201265027 Y CN 201265027Y CN U2008202181162 U CNU2008202181162 U CN U2008202181162U CN 200820218116 U CN200820218116 U CN 200820218116U CN 201265027 Y CN201265027 Y CN 201265027Y
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 24
- 238000000137 annealing Methods 0.000 title abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 18
- 238000005554 pickling Methods 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 abstract description 12
- 238000005097 cold rolling Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 5
- 230000006698 induction Effects 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 238000010606 normalization Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
本实用新型提供一种热轧板直接通电加热退火装置，它是由两根导电辊、电源与钢板组成回路的加热装置，安装在硅钢的单列机组或酸洗轧制联合机组酸洗前活套内。电流通过导线，具有一定距离的两上导电辊，以及钢板构成回路。由于电工钢的电阻率较大，当电流通过钢板时，电能转换成热能使钢板温度升高，使钢板组织发生改变。本实用新型在冷轧电工钢常规产品生产中实施，可提高产品磁感应强度，降低铁损值，达到高效产品性能要求；在高牌号冷轧电工钢及取向电工钢生产中实施，可替代常化机组，实现一次大压下率冷轧法高效率低成本生产。本实用新型投资小、占地少、节省能源、成本低，放置灵活。
The utility model provides a direct heating and annealing device for a hot-rolled plate, which is a heating device composed of two conductive rollers, a power supply and a steel plate, and is installed in a silicon steel single row unit or a combined pickling and rolling unit before pickling. Inside. The current passes through the wire, the two upper conductive rollers with a certain distance, and the steel plate to form a loop. Due to the high resistivity of electrical steel, when the current passes through the steel plate, the electrical energy is converted into heat energy to increase the temperature of the steel plate and change the structure of the steel plate. The utility model is implemented in the production of conventional cold-rolled electrical steel, which can increase the magnetic induction intensity of the product, reduce the iron loss value, and meet the performance requirements of high-efficiency products; it is implemented in the production of high-grade cold-rolled electrical steel and oriented electrical steel, and can replace normalization The unit realizes a high-efficiency and low-cost production of a large reduction rate cold rolling method. The utility model has the advantages of small investment, less land occupation, energy saving, low cost and flexible placement.
Description
Technical field
The utility model belongs to the technical field that silicon steel is produced, and relates to making in the high-performance cold rolled electrical sheet process the steel plate heating anneal device of directly switching on.
Background technology
During cold rolling electric was produced, when 〉=2%Si content, when adopting the once cold rolling manufacturing process, hot-rolled sheet must normalizing, and main purpose is that hot-rolled sheet is organized is more even, and recrystal grain is increased, and prevents tile of finished product ridge shape defective; Simultaneously, the precipitate alligatoring that makes crystal grain is handled in normalizing, strengthens (100) and (110) component and weakens (111) component, and magnetic property obviously improves, particularly the magnetic strength value.
Facing to worldwide energy-conservation, lower consumption, economize on resources and the pressing for of environment protection; the electronic product of making iron core with cold rolling electrical steel product is progressively to the development of miniaturization, high precision int and high efficiency; impel conventional products to make the transition to premium quality product, normalizing process is used more and more general.
The main body equipment of implementing normalizing process is the normalizing unit, is equivalent to the continous way annealing unit of hot-rolled sheet coil, and investment is big, occupation of land is many, energy consumption is big, process cost is high.In addition because hot-rolled sheet thickness is thicker, and the silicon steel thermal conductivity is lower, so need just to make steel plate reach technological temperature long heat-up time.Therefore require the normalizing unit that long body of heater is arranged, satisfy the intensification requirement.Normalizing furnace generally adopts electrically heated, and carries out in shielding gas atmosphere, and energy utilization rate is lower.
Avoid the problem of existing electrically heated energy dissipation in order to reach the normalizing purpose, prior art also has corresponding report, and for example the technology wide coverage of alternative normalizing process has: hot rolled coil high temperature batches technology, hot rolled coil bell-type annealing technology etc.
Hot rolled coil high temperature batches and is subjected to the reeling machine capabilities limits, and can not realize high temperature, short time control uniform formation and precipitate form, and even more serious is that invar is rolled up inhomogeneous cooling end to end, causes finished product magnetic inequality.
Hot rolled coil bell-type annealing technology can not be controlled the homogeneity of coil of strip tissue equally, and the high temperature annealing time is long, and hot-rolled sheet crystal grain is excessive, and the cold-workability difference also makes the finished surface quality deteriorated; The high temperature iron sheet also often makes the pickling difficulty, so also do not have a kind of practicable method to solve the problem of utilizing process furnace to finish normalizing at present.
The utility model content
The utility model provides a kind of hot-rolled sheet heating anneal device of directly switching on; adopt directly energising heating anneal device processing cold rolling electric raw material---hot rolled coil; substitute conventional normalizing unit; at high temperature, in short-term, thermal treatment process is issued to that hot-rolled sheet recrystallized structure is perfect fast, uniform crystal particles, precipitate are controlled, the favorable texture component strengthens, and realize purpose energy-conservation, the high-performance cold rolled electrical steel product of high efficiency production.
The purpose of this utility model is achieved in that it forms the heating unit in loop by two conductive rollers and power supply and steel plate, is installed in before and after the single-row unit of silicon steel or before the pickling of the rolling associating unit of pickling in the kink.Electric current is by lead, have certain distance two on conductive rollers, and steel plate constitutes the loop.Because the resistivity of electrical steel is bigger, when electric current passed through steel plate, electric energy converts heat energy to raise steel billet temperature, and the steel plate tissue is changed.
The utility model utilization heating anneal device of directly switching on adopts controlled direct supply or the AC power under the certain frequency, affacts the steel band of operation under the certain speed by conductive rollers, realizes the high temperature, short time rapid heating; Refrigerating unit be can attach subsequently and tissue and precipitate state further controlled.
The utility model is characteristics of utilizing silicon steel resistivity higher, and by big electric current, steel plate self is as electrical heating element, so thermo-efficiency is higher at steel plate.Owing to do not have the heat transfer process of heating unit, so heat-up rate is very fast to silicon steel.Use the alive method heating of steel plate, can be by increasing the method controlled temperature of electric current.Heating temperature is not subjected to effects limit such as heating unit, when electric current is enough big, can make steel plate reach comparatively high temps at short notice, melts until steel plate.Deformed grains recrystallize speed is determined by factors such as Heating temperature, rate of heating, heat-up time and deformation energies, wherein Heating temperature has the greatest impact to recrystallize, improve significantly accelerate recrystallisation process of Heating temperature, so under comparatively high temps, just can finish recrystallize in the short period.
The utility model is implemented in the cold rolling electric conventional products is produced, and can improve product magnetic induction density, reduces core loss value, reaches the high efficiency products performance requriements; Implement in high grade cold rolling electrical steel and oriented electrical steel production, alternative normalizing unit is realized a heavy reduction rate cold-rolling practice high-efficiency and low-cost production.The utility model investment is little, take up an area of less, save the energy, cost is low, places flexibly.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is elaborated:
As shown in the figure, the utility model constitutes the heating unit that the loop is formed by two conductive rollers 2 and power supply 1 with the steel plate 3 that moves, and steel plate 3 is own as heating unit, and it is installed in the single-row unit or the preceding kink of the rolling associating unit of pickling pickling of silicon steel.Electric current is by lead, have certain distance two on conductive rollers 2, and steel plate 3 constitutes loops.Because the resistivity of electrical steel is bigger, when electric current passed through steel plate, electric energy converts heat energy to raise steel billet temperature, and the steel plate tissue is changed.
The utility model adopts before the pickling in the rolling associating unit of pickling, after utilize surplus Wen Zaihang cleanup acid treatment, save the energy more and realize the serialization operation.
Claims (2)
1, a kind of hot-rolled sheet heating anneal device of directly switching on is characterized in that, it constitutes the loop by two conductive rollers and power supply and steel plate forms, and it is installed in before the single-row unit of silicon steel or the pickling of the rolling associating unit of pickling in the kink.
2, the hot-rolled sheet according to claim 1 heating anneal device of directly switching on is characterized in that, described electric heater unit adopts steel plate itself as heating unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202181162U CN201265027Y (en) | 2008-09-18 | 2008-09-18 | Hot-rolled plate direct heating annealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202181162U CN201265027Y (en) | 2008-09-18 | 2008-09-18 | Hot-rolled plate direct heating annealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201265027Y true CN201265027Y (en) | 2009-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202181162U Expired - Fee Related CN201265027Y (en) | 2008-09-18 | 2008-09-18 | Hot-rolled plate direct heating annealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201265027Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956059A (en) * | 2010-06-13 | 2011-01-26 | 浙江佰耐钢带有限公司 | Device for continuously heating steel strip by direct energization |
| CN102220594A (en) * | 2011-05-31 | 2011-10-19 | 马鞍山钢铁股份有限公司 | Method for pickling hot rolled steel strip by resistance heating and its apparatus |
| CN102382950A (en) * | 2011-11-08 | 2012-03-21 | 建科机械（天津）股份有限公司 | Conductive wheel electric heating device for cold-rolled ribbed steel bar production line |
| US10612854B2 (en) | 2013-12-25 | 2020-04-07 | Industrial Technology Research Institute | Sample holder annealing apparatus using the same |
| CN111411204A (en) * | 2020-04-08 | 2020-07-14 | 燕山大学 | Variable-thickness steel plate heating device and method |
| CN113025800A (en) * | 2021-03-03 | 2021-06-25 | 哈尔滨工业大学 | Stress relieving method of electrically-propelled hollow cathode heating wire |
| WO2023074467A1 (en) * | 2021-10-27 | 2023-05-04 | Ｊｆｅスチール株式会社 | Hot-rolled steel strip annealing method |
| WO2024009783A1 (en) * | 2022-07-04 | 2024-01-11 | Ｊｆｅスチール株式会社 | Hot-rolled steel strip annealing method, and electromagnetic steel sheet production method using said annealing method |
-
2008
- 2008-09-18 CN CNU2008202181162U patent/CN201265027Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956059A (en) * | 2010-06-13 | 2011-01-26 | 浙江佰耐钢带有限公司 | Device for continuously heating steel strip by direct energization |
| CN102220594A (en) * | 2011-05-31 | 2011-10-19 | 马鞍山钢铁股份有限公司 | Method for pickling hot rolled steel strip by resistance heating and its apparatus |
| CN102382950A (en) * | 2011-11-08 | 2012-03-21 | 建科机械（天津）股份有限公司 | Conductive wheel electric heating device for cold-rolled ribbed steel bar production line |
| CN102382950B (en) * | 2011-11-08 | 2013-07-31 | 建科机械（天津）股份有限公司 | Conductive wheel electric heating device for cold-rolled ribbed steel bar production line |
| US10612854B2 (en) | 2013-12-25 | 2020-04-07 | Industrial Technology Research Institute | Sample holder annealing apparatus using the same |
| CN111411204A (en) * | 2020-04-08 | 2020-07-14 | 燕山大学 | Variable-thickness steel plate heating device and method |
| CN113025800A (en) * | 2021-03-03 | 2021-06-25 | 哈尔滨工业大学 | Stress relieving method of electrically-propelled hollow cathode heating wire |
| WO2023074467A1 (en) * | 2021-10-27 | 2023-05-04 | Ｊｆｅスチール株式会社 | Hot-rolled steel strip annealing method |
| JPWO2023074467A1 (en) * | 2021-10-27 | 2023-05-04 | ||
| JP7558476B2 (en) | 2021-10-27 | 2024-10-01 | Ｊｆｅスチール株式会社 | Annealing method for hot rolled steel strip |
| WO2024009783A1 (en) * | 2022-07-04 | 2024-01-11 | Ｊｆｅスチール株式会社 | Hot-rolled steel strip annealing method, and electromagnetic steel sheet production method using said annealing method |
| JPWO2024009783A1 (en) * | 2022-07-04 | 2024-01-11 | ||
| JP7522998B2 (en) | 2022-07-04 | 2024-07-26 | Ｊｆｅスチール株式会社 | Method for annealing hot-rolled steel strip and method for manufacturing electrical steel sheet using said annealing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090701 Termination date: 20140918 |
|
| EXPY | Termination of patent right or utility model |