CN1279190C - Production method of electrical steel plate for magnetic suspension long stator - Google Patents
Production method of electrical steel plate for magnetic suspension long stator Download PDFInfo
- Publication number
- CN1279190C CN1279190C CN 03150582 CN03150582A CN1279190C CN 1279190 C CN1279190 C CN 1279190C CN 03150582 CN03150582 CN 03150582 CN 03150582 A CN03150582 A CN 03150582A CN 1279190 C CN1279190 C CN 1279190C
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- Prior art keywords
- temperature
- band steel
- magnetic
- long stator
- steel
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- Expired - Lifetime
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000000725 suspension Substances 0.000 title abstract description 5
- 229910000976 Electrical steel Inorganic materials 0.000 title description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 238000005096 rolling process Methods 0.000 claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims abstract description 4
- 239000004615 ingredient Substances 0.000 claims abstract description 3
- 238000005097 cold rolling Methods 0.000 claims description 8
- 238000005339 levitation Methods 0.000 claims description 8
- 238000000137 annealing Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000001953 recrystallisation Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000005554 pickling Methods 0.000 claims description 4
- 239000013078 crystal Substances 0.000 abstract description 6
- 239000011572 manganese Substances 0.000 abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 229910052748 manganese Inorganic materials 0.000 abstract description 2
- 239000010703 silicon Substances 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract description 2
- 239000011593 sulfur Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 239000000047 product Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 230000002939 deleterious effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
The present invention relates to a manufacturing method for an electric steel board used for a long stator of magnetic suspension, which comprises the following steps: step 1, the chemical ingredients of carbon lower than 0.003%, 0.65% to 1.25% of silicon, manganese lower than 1.00%, sulfur lower than 0.005%, aluminum lower than 0.35%, nitrogen lower than 0.003% and 0.01% to 0.10% of phosphor are smelted and continuously cast into a board blank; step 2, the board blank is heated at the temperature lower than 1200 DEG C; step 3, the board blank is processed by rough rolling treatment and fine rolling treatment, and the temperatures of the fine rolling treatment and the final rolling treatment are from 830 to 900 DEG C; step 4, controlled cooling treatment is carried out through a U-shaped laminar flow cooling mode, and high-temperature coiling operation is carried out at the temperature higher than 730 DEG C; step 5, band steel is washed by water, rolled in a cold mode, annealed and coated to be made into a finished product. The present invention increases the temperature of a fine rolling outlet, is close to the upper limit of an alpha phase region and the high-temperature coiling operation in the maximum possibility, and improves the magnetic performance of the band steel of electric steel. The present invention controls the laminar flow cooling operation to enable the temperatures of the head part and the tail part of the hot-rolled band steel of the high-temperature coiling operation to be higher than the temperature of the middle part. The difficult problem that the crystal grains and the magnetic performance of the band steel are not uniform is effectively solved.
Description
Technical field
The present invention relates to the production method of electrical sheet, particularly the magnetic levitation long stator production method of electrical sheet.
Background technology
Thyssen company is entitled as the patent of invention [US:4 of " continuous production method of linear motor long stator " at U. S. application, 728,382, March, 1,1988] propose the electromagnetism promotion that the linear motor long stator is particularly suitable for magnetic suspension train in, and high speed magnetic thrust railway system magnetic suspension train motor is supported and guiding, and particularly point out the linear motor long stator and constitute, but openly do not make the manufacturing process of the linear long stator of magnetic levitation with electrical steel with electrician's steel laminate core.
Make the linear long stator of magnetic levitation and be actually the low grade electric steel of a kind of cold rolling non-orientation, for stable electromagnetism impellent and holding power is provided to magnetic suspension train, thereby both required low iron loss of electrical steel and high magnetic strength, require the magnetic uniformity again with electrical steel.For this reason, following technology is being arranged aspect the non-oriented electrical steel of producing excellent magnetic:
1, hold forever Ji Zhixiong etc. and propose in the day disclosure special permission flat 4-63228 of communique (1992),＜1100 ℃ of heating are to prevent the MnS solid solution, and last two passages of finish rolling are in a phase region, and guarantee finishing temperature height as far as possible, coiling temperature＜650 ℃.
2, political affairs justice in the mouth of a river proposes in the day disclosure special permission clear 60-50117 of communique (1985), coiling temperature is greater than 700 ℃, make the hot-rolled sheet grain coarsening, precipitate is assembled, and finished product (110) and (100) component are strengthened, and magnetic obviously improves, but batch because the coil of strip temperature difference increases greater than 700 ℃ of high temperature, Internal and external cycle is lower than middle part temperature, causes hot-rolled sheet crystal grain inhomogeneous, and the magnetic that is equivalent to the hot rolled coil head and tail is low.In order effectively to solve the uneven problem of magnetic, after employing high temperature batches hot rolled coil is put into the method for stay-warm case internal cooling, make the band steel even.
Summary of the invention
The purpose of this invention is to provide the production method of the magnetic levitation long stator of excellent magnetic with electrical sheet, by raising finishing temperature and coiling temperature, and control laminar flow cooling water inflow, both improved the magnetic of being with steel effectively, make magnetic more even again.
For achieving the above object, technical scheme of the present invention is that the magnetic levitation long stator comprises the steps: with the production method of electrical sheet
A. the chemical ingredients of electrical sheet is (weight percent):
Below the C:0.003%,
Si：0.65～1.25％，
Below the Mn:1.00%,
P：0.01～0.10％，
Below the Al:0.35%,
Below the S:0.005%,
Below the N:0.003%,
Surplus is Fe and inevitable inclusion;
B. with the slab heating, Heating temperature is below 1200 ℃;
C. to above-mentioned slab rough rolling and finish rolling, the finish rolling finishing temperature is 830～900 ℃;
D. then cool off by U type laminar flow, and batch, coiling temperature is preferably 730～780 ℃ greater than 730 ℃, makes the temperature of band steel toe afterbody be higher than 30～50 ℃ of middle part temperature;
E. carry out pickling, cold rolling again;
F. then cold rolled strip is carried out recrystallization annealing, the temperature of recrystallization annealing is 750～880 ℃;
G. then the band steel is carried out coating and makes finished product.
C: in order to improve iron loss, the electrical steel finished product does not produce magnetic aging, and C is preferably low, does not allow to surpass 0.0030% scope.
Si: in order to improve intrinsic resistance, reduce eddy losses and need contain Si more than 0.65%, but Si content surpasses 1.25% magnetic strength is degenerated, so be limited to 0.65～1.25% scope.
Mn: also need to contain more than the Mn0.25% in order to improve intrinsic resistance, can cause cost to rise significantly at 1.00% o'clock, and steel-making is also relatively more difficult but Mn content surpasses.
P:0.01～0.10%, P are the elements in sealing γ district, and when Si, Al content were low, P can improve magnetic, but when surpassing 0.10%, P can make magnetic strength worsen, and also can increase the cold shortness of steel plate, so be limited to 0.01～0.10%.
Below the Al:0.35%, Al can improve core loss value effectively, but the same with the Si for a long time magnetic strength that can reduce material of content also can raise the cost, so the interpolation scope is below 0.35%.
Below the S:0.005%, S is to the deleterious element of magnetic, preferably makes S low as far as possible, but the scope that allows is below 0.005%.
Below the N:0.003%, N is to the deleterious element of magnetic, preferably makes N low as far as possible, but the scope that allows is below 0.003%.
Control finish rolling temperature out can go far towards to improve magnetic in the production method of the present invention.In a phase region, along with the raising of finishing temperature, magnetic improves.Finishing temperature to the mechanism of effect of magnetic influence is: the hot rolled strip of finish to gauge in two-phase region and austenitic area has less grain fineness number, and this is because the result of phase transformation refinement.Finishing temperature is at Ar
1～Ar
1Hot rolled strip had big grain fineness number in-100 o'clock, and temperature is more near Ar
1, crystal grain is big more, and 001}＜110〉density of fraction significantly improves.In addition, the steel (＜Ar that finishing temperature is lower
1-100) grain fineness number minimum, this is because produced due to the fine isometric crystal grains of forming core on crystal boundary of larger proportion in the material.Finish rolling finishes, then by the flow of control laminar cooling water, high temperature is batched after, the temperature of band steel toe tail is higher than 30～50 ℃ of the temperature at band steel middle part, reaches hot rolled strip homogeneous grain size purpose.
Beneficial effect of the present invention
By improving the finish rolling temperature out, promptly batch use simultaneously near a phase region upper limit and high temperature as far as possible, improve the magnetic of electrical steel strip steel, and by the U type type of cooling, promptly by controlling the flow of laminar cooling water, make hot rolled strip that high temperature batches end to end the temperature of the portion method of temperature that is higher than the middle part solve a band crystalline grain of steel and the uneven difficult problem of magnetic effectively, and, the excellent magnetic of electrical steel.
Embodiment
At first incite somebody to action carbon containing according to chemical composition: silicon 0.0030%: manganese 0.70%: sulphur 0.30%: aluminium 0.0050%: nitrogen 0.35%: phosphorus 0.0025%: 0.020%, smelt tapping, then make slab with continuous casting.Temperature with 1180 ℃ in hot-rolling heating furnace heats slab, then slab is carried out roughing and finish rolling, batches by enforcement finish rolling of the condition shown in the table 1 and high temperature; Cool off by the U type type of cooling, make the temperature of band steel toe afterbody be higher than 30～50 ℃ of middle part temperature, reach the purpose of hot rolled strip uniform crystal particles unanimity; Then pickling, cold rolling, general pickling are arrived the finished product thickness of 0.5mm with once cold rolling after removing band steel oxidation iron sheet, and take mao roller mode rolling, and cold rolling finished surface roughness is controlled at 0.80 μ～1.20 μ; At last,, cold rolling coil is implemented recrystallization annealing in continuous annealing furnace under 750～880 ℃ temperature, then the band steel is coated with self-adhesive coating and makes finished product cold rolling coil annealing coating.
As seen, press the method production of embodiment from table 1, the magnetic of electrical steel is excellent and even.
Table 1
| Type | The finish rolling temperature out (℃) | Coiling temperature (℃) | The U type batches | Iron loss P 15/50 (w/kg) | Magnetic strength B 50 (T) | ||||
| Head | In | Tail | Head | In | Tail | ||||
| Comparative Examples 1 | 830 | 560 | × | 5.64 | 5.48 | 5.53 | 1.718 | 1.721 | 1.721 |
| Comparative Examples 2 | 890 | 730 | × | 5.29 | 4.85 | 5.15 | 1.729 | 1.736 | 1.730 |
| Embodiment 1 | 890 | 730 | √ | 4.96 | 4.81 | 4.89 | 1.733 | 1.735 | 1.732 |
| Embodiment 2 | 860 | 740 | √ | 5.07 | 4.98 | 5.03 | 1.730 | 1.733 | 1.733 |
| Embodiment 3 | 880 | 740 | √ | 5.02 | 4.88 | 4.91 | 1.731 | 1.735 | 1.733 |
Claims (2)
1. the magnetic levitation long stator comprises the steps: with the production method of electrical sheet
A. the chemical ingredients of electrical sheet is (weight percent):
Below the C:0.003%,
Si：0.65～1.25％，
Below the Mn:1.00%,
P：0.01～0.10％，
Below the Al:0.35%,
Below the S:0.005%,
Below the N:0.003%,
Surplus is Fe and inevitable inclusion;
B. with the slab heating, Heating temperature is below 1200 ℃;
C. to above-mentioned slab rough rolling and finish rolling, the finish rolling finishing temperature is 830～900 ℃;
D. then cool off by the U type laminar flow type of cooling, and batch, coiling temperature is greater than 730 ℃; Make the temperature of band steel toe afterbody be higher than 30～50 ℃ of middle part temperature;
E. carry out pickling, cold rolling again;
F. then cold rolled strip is carried out recrystallization annealing, the temperature of recrystallization annealing is 750～880 ℃;
G. then the band steel is carried out coating and makes finished product.
2. the magnetic levitation long stator as claimed in claim 1 production method of electrical sheet is characterized in that,
Described step c coiling temperature is 730～780 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03150582 CN1279190C (en) | 2003-08-27 | 2003-08-27 | Production method of electrical steel plate for magnetic suspension long stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03150582 CN1279190C (en) | 2003-08-27 | 2003-08-27 | Production method of electrical steel plate for magnetic suspension long stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1590567A CN1590567A (en) | 2005-03-09 |
| CN1279190C true CN1279190C (en) | 2006-10-11 |
Family
ID=34597603
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03150582 Expired - Lifetime CN1279190C (en) | 2003-08-27 | 2003-08-27 | Production method of electrical steel plate for magnetic suspension long stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1279190C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101654757B (en) * | 2008-08-20 | 2012-09-19 | 宝山钢铁股份有限公司 | Coated semi-processed non-oriented electrical steel sheet and manufacturing method thereof |
| CN101348854B (en) * | 2008-09-05 | 2010-12-22 | 首钢总公司 | Method for producing oriented electrical steel by low temperature heating |
| CN103305748A (en) * | 2012-03-15 | 2013-09-18 | 宝山钢铁股份有限公司 | Non-oriented electrical steel plate and manufacturing method thereof |
| CN102851474B (en) * | 2012-09-12 | 2015-05-27 | 首钢总公司 | Production method for improving strip steel through coil mechanical property uniformity |
| CN104492827B (en) * | 2014-12-24 | 2017-03-08 | 安阳钢铁股份有限公司 | A kind of using section cooling equipment carry out centre treat temperature production method |
| CN114990308B (en) * | 2022-05-26 | 2023-06-09 | 武汉钢铁有限公司 | Production method of high-grade unoriented silicon steel without normalization |
| CN115491478B (en) * | 2022-09-28 | 2023-06-27 | 马鞍山钢铁股份有限公司 | Production method and system for improving head and tail performance of non-oriented electrical steel |
-
2003
- 2003-08-27 CN CN 03150582 patent/CN1279190C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1590567A (en) | 2005-03-09 |
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