CN105779730A - Production method of semi-processed electrical steel - Google Patents
Production method of semi-processed electrical steel Download PDFInfo
- Publication number
- CN105779730A CN105779730A CN201410811836.XA CN201410811836A CN105779730A CN 105779730 A CN105779730 A CN 105779730A CN 201410811836 A CN201410811836 A CN 201410811836A CN 105779730 A CN105779730 A CN 105779730A
- Authority
- CN
- China
- Prior art keywords
- annealing
- semi
- production method
- cold
- electrical steel
- Prior art date
- 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 9
- 229910000976 Electrical steel Inorganic materials 0.000 title claims abstract description 8
- 238000000137 annealing Methods 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 238000005097 cold rolling Methods 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 238000009749 continuous casting Methods 0.000 claims abstract description 9
- 238000005554 pickling Methods 0.000 claims abstract description 6
- 238000002791 soaking Methods 0.000 claims abstract description 6
- 238000004806 packaging method and process Methods 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000003009 desulfurizing effect Effects 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 abstract description 8
- 238000000576 coating method Methods 0.000 abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 238000003723 Smelting Methods 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000005098 hot rolling Methods 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000007670 refining Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000001953 recrystallisation Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention discloses a production method of semi-processed electrical steel, which comprises the steps of molten iron desulphurization, converter smelting, RH refining, continuous casting, hot rolling, acid cleaning, cold rolling, annealing of a continuous annealing furnace, stretching and leveling, coating, performance inspection and packaging, wherein molten steel is cast into a blank by adopting a continuous casting mode, and the blank is hot rolled to 2.0-2.5 mm; pickling and cold-rolling to 0.6-0.5 mm, wherein the reduction rate is 60-90%; annealing in a continuous furnace after cold rolling, using N2+H2Atmosphere protection, N2: 30-80%; the balance being H2(ii) a The temperature of the soaking section of the annealing furnace is 600-800 ℃, and the temperature is kept for 30-80 s; the thickness of the product after stretching and flattening is 0.6-0.4 mm, the reduction rate is 6-15%, and the roughness Ra of the flattening roller on the flattening machine is as follows: 2.0 to 3.0 μm and a tension of 2 to 5 KN.
Description
Technical field
The present invention relates to the production method of semi-technological electrical steel, particularly to the production method of a kind of semi-processed cold-rolled non-oriented electrical steel.
Background technology
Adopt cold rolling non-oriented electrical steel product that conventional full technique obtains in user's deep-processing process due to plate surface quality be easy to occur that folded riveting is bad, coating shedding, matrix such as are not easily grown up at the phenomenon after stress relief annealing, use thus affecting user.
The method improving steel surface roughness at present is applied only on the cold-rolled products such as galvanized sheet, Automobile Plate, seldom it is applied on cold rolling non-oriented electrical steel product, because these products do not need lamination and are not concerned with the electromagnetic performance of product, so, cold-rolled products improve roughness and only can promote coating tack, reduce the useless rate of punching.For cold rolling non-oriented electrical steel, if although the roughness improving the upper and lower surface of steel plate can improve the tack of coating, but the lamination coefficient of product can be reduced, be unfavorable for product deep processing.
Summary of the invention
The present invention provides the production method of a kind of semi-technological electrical steel, it is possible to effectively improving product deep processing, and after user's stress relief annealing, magnetic property is excellent simultaneously, meets the instructions for use of user Geng Gao.
The technical scheme is that and be achieved in that:
A kind of production method of semi-technological electrical steel, it is characterized in that including desulfurizing iron-converter smelting-RH refine-continuous casting and hot rolling-pickling-cold rolling-continuous annealing furnace annealing-stretching and leveling-coating-service check-packaging, adopt continuous casting mode that molten steel is cast base, be hot-rolled down to 2.0～2.5mm；Being cold-rolled to 0.6～0.5mm after pickling, reduction ratio is 60～90%；Cold rolling rear continuous annealing, adopts N2+H2Atmosphere protection, N2: 30～80%；All the other are H2；Annealing furnace soaking zone temperature 600～800 DEG C, is incubated 30～80s；The smooth rear product thickness of drawn is 0.6～0.4mm, and reduction ratio is 6～15%, the roughness Ra of leveling roll on planisher: 2.0～3.0 μm, tension force controls at 2～5KN.
Material composition required by above-mentioned technique: C≤0.003%, Si:0.5～3.0%, Al:0～2.0%, Mn:0.10～0.30%, P≤0.03%, S≤0.015%, N≤0.0050%, all the other are Fe and inevitable residual elements.
The present invention can obtain the product with one side roughness, can increase substantially coating tack (can reach O level), and during automatic laminating, when having the surface riveted joint of roughness, burr increases, and improves the folded quality of riveting.Owing to product is smooth through 5% reduction ratio, adding the storage energy of steel plate crystal grain, after user's stress relief annealing, steel plate crystal grain can continue to grow up under the effect of storage energy, improves product electromagnetic performance (P further15/50Reduce 0.7W/kg, B5000Promote 0.013T) so that electric efficiency promotes 2～5%.
Detailed description of the invention
Below by some embodiments, the present invention is further described.
Material composition: C:0.003%, Si:0.9%, Al:0.25%, Mn:0.22%, P:0.01%, S:0.006%, N:0.002%, all the other are Fe and inevitable residual elements.
Embodiment 1
1. adopt continuous casting mode that molten steel is cast base, be hot-rolled down to 2.15mm；
2. it is cold-rolled to 0.54mm after pickling；
3. adopt continuous annealing after cold rolling, adopt N2+H2Atmosphere protection, N2: 65%；All the other are H2；Annealing furnace soaking zone temperature 750 DEG C, is incubated 55s, and recrystallization has just occurred matrix, and forming core is uniform；
4. smooth, reduction ratio is 8%, and on planisher, the roughness Ra of leveling roll is: 2.0 μm, and tension force controls at 3KN, and product thickness is 0.495mm；
5. coating makes finished product；
6. batch annealing, analog subscriber stress relief annealing, temperature 750 DEG C, it is incubated 2h.
Embodiment 2
1. adopt continuous casting mode that molten steel is cast base, be hot-rolled down to 2.2mm；
2. it is cold-rolled to 0.55mm after pickling；
3. adopt continuous annealing after cold rolling, adopt N2+H2Atmosphere protection, N2: 70%；All the other are H2；Annealing furnace soaking zone temperature 780 DEG C, is incubated 60s, and recrystallization has just occurred matrix, and forming core is uniform；
4. smooth, reduction ratio is 9%, and on planisher, the roughness Ra of leveling roll is: 2.5 μm, and tension force controls at 3KN, and product thickness is 0.5mm；
5. coating makes finished product；
6. batch annealing, analog subscriber stress relief annealing, temperature 750 DEG C, it is incubated 2h.
Embodiment 3
1. adopt continuous casting mode that molten steel is cast base, be hot-rolled down to 2.25mm；
2. it is cold-rolled to 0.57mm after pickling；
3. adopt continuous annealing after cold rolling, adopt N2+H2Atmosphere protection, N2: 75%；All the other are H2；Annealing furnace soaking zone temperature 790 DEG C, is incubated 65s, and recrystallization has just occurred matrix, and forming core is uniform；
4. smooth, reduction ratio is 13%, and on planisher, the roughness Ra of leveling roll is: 3.0 μm, and tension force controls at 4KN, and product thickness is 0.493mm；
5. coating makes finished product；
6. batch annealing, analog subscriber stress relief annealing, temperature 750 DEG C, it is incubated 2h.
As follows according to the obtained properties of product of above-mentioned technique:
Claims (2)
1. the production method of a semi-technological electrical steel, it is characterized in that including desulfurizing iron-converter smelting-RH refine-continuous casting and hot rolling-pickling-cold rolling-continuous annealing furnace annealing-stretching and leveling-coating-service check-packaging, adopt continuous casting mode that molten steel is cast base, be hot-rolled down to 2.0～2.5mm；Being cold-rolled to 0.6～0.5mm after pickling, reduction ratio is 60～90%；Cold rolling rear continuous annealing, adopts N2+H2Atmosphere protection, N2: 30～80%；All the other are H2；Annealing furnace soaking zone temperature 600～800 DEG C, is incubated 30～80s；The smooth rear product thickness of drawn is 0.6～0.4mm, and reduction ratio is 6～15%, the roughness Ra of leveling roll on planisher: 2.0～3.0 μm, tension force controls at 2～5KN.
2. the production method of semi-technological electrical steel according to claim 1, it is characterized in that the composition of described steel is by weight percentage for C≤0.003%, Si:0.5～3.0%, Al:0～2.0%, Mn:0.10～0.30%, P≤0.03%, S≤0.015%, N≤0.0050%, all the other are Fe and inevitable residual elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811836.XA CN105779730A (en) | 2014-12-23 | 2014-12-23 | Production method of semi-processed electrical steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811836.XA CN105779730A (en) | 2014-12-23 | 2014-12-23 | Production method of semi-processed electrical steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105779730A true CN105779730A (en) | 2016-07-20 |
Family
ID=56377205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410811836.XA Pending CN105779730A (en) | 2014-12-23 | 2014-12-23 | Production method of semi-processed electrical steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105779730A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735088A (en) * | 2019-11-22 | 2020-01-31 | 马鞍山钢铁股份有限公司 | Non-oriented silicon steel produced by thin slabs and manufacturing method thereof |
| CN111996353A (en) * | 2020-08-03 | 2020-11-27 | 鞍钢股份有限公司 | High-efficiency production method of electrical steel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006265720A (en) * | 2005-02-23 | 2006-10-05 | Nippon Steel Corp | Non-oriented electrical steel sheet excellent in magnetic properties in rolling direction and method of production of the same |
| CN103031422A (en) * | 2011-09-29 | 2013-04-10 | 鞍钢股份有限公司 | Method for producing non-oriented electrical steel coating semi-process product |
| CN103066768A (en) * | 2013-01-04 | 2013-04-24 | 湖南雪豹电器有限公司 | Production craft utilizing semi-processed steel to produce motor rotor and motor stator |
| CN104195426A (en) * | 2014-03-26 | 2014-12-10 | 浙江龙盛薄板有限公司 | Semi-processed non-oriented silicon steel and manufacturing method thereof |
-
2014
- 2014-12-23 CN CN201410811836.XA patent/CN105779730A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006265720A (en) * | 2005-02-23 | 2006-10-05 | Nippon Steel Corp | Non-oriented electrical steel sheet excellent in magnetic properties in rolling direction and method of production of the same |
| CN103031422A (en) * | 2011-09-29 | 2013-04-10 | 鞍钢股份有限公司 | Method for producing non-oriented electrical steel coating semi-process product |
| CN103066768A (en) * | 2013-01-04 | 2013-04-24 | 湖南雪豹电器有限公司 | Production craft utilizing semi-processed steel to produce motor rotor and motor stator |
| CN104195426A (en) * | 2014-03-26 | 2014-12-10 | 浙江龙盛薄板有限公司 | Semi-processed non-oriented silicon steel and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 卢凤喜 等: "低磁场性能优良的无取向电工钢生产方法", 《武钢技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110735088A (en) * | 2019-11-22 | 2020-01-31 | 马鞍山钢铁股份有限公司 | Non-oriented silicon steel produced by thin slabs and manufacturing method thereof |
| CN111996353A (en) * | 2020-08-03 | 2020-11-27 | 鞍钢股份有限公司 | High-efficiency production method of electrical steel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102268800B1 (en) | Steel plate for two-piece can and manufacturing method thereof | |
| JP6274302B2 (en) | Steel plate for 2-piece can and manufacturing method thereof | |
| TWI390054B (en) | Steel plate for high strength container and method for manufacturing the same | |
| JP6048618B2 (en) | Steel plate for cans and method for producing steel plate for cans | |
| CN105441796B (en) | TWIP steel with high strength-ductility product and preparation method thereof | |
| CN107012392A (en) | A kind of 600MPa grade high-strengths low-alloy cold-strip steel and its production method | |
| CN107557679A (en) | Light austenitic steel with good strong plasticity and production method thereof | |
| CN105779877B (en) | Efficient production method of semi-processed non-oriented electrical steel | |
| MX2014008493A (en) | Electrical steel processing without a post cold-rolling intermediate anneal. | |
| CN105779730A (en) | Production method of semi-processed electrical steel | |
| TWI391502B (en) | Cold rolled steel sheet and its manufacturing method and backlight module chassis | |
| JP5046400B2 (en) | Method for producing cold-rolled steel sheet with excellent recrystallization softening resistance and cold-rolled steel sheet for automatic transmission | |
| US10301702B2 (en) | Steel sheet for cans and manufacturing method thereof | |
| TWI649428B (en) | Two-piece can steel plate and manufacturing method thereof | |
| CN105986176A (en) | Production method of semi-process cold-rolled non-oriented electrical steel | |
| CN103031423A (en) | Method for improving performance of non-oriented electrical steel high-efficiency and high-grade product | |
| CN103031426B (en) | Method for improving performance of non-oriented electrical steel high-efficiency and high-grade product | |
| JP6019719B2 (en) | Manufacturing method of high strength and high ductility steel sheet | |
| CN108504947A (en) | A kind of secondary cold-rolling tin plate and its production method | |
| JPS582249B2 (en) | Continuous annealing method for cold rolled steel sheets for press forming | |
| JP5919812B2 (en) | High strength thin steel sheet with excellent formability and method for producing the same | |
| JP6179067B2 (en) | Manufacturing method of high strength steel sheet with excellent surface quality | |
| CN110541123B (en) | Cold-rolled strip steel for battery case and preparation method thereof | |
| CN104131144A (en) | Cold-rolled steel plate, making method of cold-rolled steel plate, galvanized steel plate and making method of galvanized steel plate | |
| CN103451397A (en) | Carbon steel annealing process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160720 |