CN104894354A - Production method for preparing thin-specification high-magnetic-strength oriented silicon steel through low-temperature hot rolled plate - Google Patents
Production method for preparing thin-specification high-magnetic-strength oriented silicon steel through low-temperature hot rolled plate Download PDFInfo
- Publication number
- CN104894354A CN104894354A CN201510312474.4A CN201510312474A CN104894354A CN 104894354 A CN104894354 A CN 104894354A CN 201510312474 A CN201510312474 A CN 201510312474A CN 104894354 A CN104894354 A CN 104894354A
- Authority
- CN
- China
- Prior art keywords
- temperature
- hot
- cold
- rolled sheet
- silicon 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.)
- Granted
Links
Landscapes
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
The invention relates to the field of material machining, and discloses a production method for preparing thin-specification high-magnetic-strength oriented silicon steel through a low-temperature hot rolled plate. The method comprises the steps of S1, hot rolling, S2, normalization heat treatment, S3, cold rolling, S4, decarburization annealing treatment, S5, coating a MgO coating on the surface of a cold rolled plate, and S6, high-temperature annealing treatment. The high-temperature annealing treatment comprises the steps that a cold rolled plate is placed in heat treatment equipment to be heated up at the first rising rate, and when the temperature reaches 850 DEG C to 870 DEG C, NH3 begins to be led to the heat treatment equipment; and when the temperature reaches the first temperature, the NH3 is stopped from being led into the equipment, and then, the temperature rises to the second temperature at the second temperature rising rate and is kept warm. A nitriding step is combined into the high-temperature annealing treatment process, the nitriding step obtained after decarburizing annealing is omitted, and energy is saved; in the high-temperature annealing stage, nitriding and high-temperature secondary recrystallization can be completed at one time, the production technology is simplified, and the production cost is saved.
Description
Technical field
The present invention relates to material processing field, particularly, relate to the production method that Thin Specs high magnetic induction grain-oriented silicon steel prepared by a kind of Low Temperature Hot Rolling plate.
Background technology
Oriented silicon steel has excellent magnetic property, and being typically used as the iron core of transformer, is integral part important in transformer.The single sharp Goss texture formed after the magnetic property of oriented silicon steel excellence comes from secondary recrystallization, and in order to obtain good secondary recrystallization tissue, need to coordinate enough inhibitor to control growing up of primary recrystallization.
In order to solve the production problem that heat technology is brought, reducing production cost, usually using low-temperature heat technology to prepare oriented silicon steel.What low-temperature heat technology adopted is low-temperature heat strand+follow-up nitridation technique, usually only by heating of plate blank to 1100 ~ 1200 DEG C, need made up the deficiency of inhibitor by follow-up nitridation process.
At present, the oriented silicon steel used in transformer is generally siliconized plate form, by rolling technology, silicon steel strand can be processed as the siliconized plate of suitable thickness.This rolling technology generally includes the steps such as hot rolling, normalizing, cold rolling, nitriding, decarburization, high temperature annealing.But such operation of rolling step is more, and the production cycle is longer, and production cost is higher.
Therefore, the production method of the high magnetic induction grain-oriented silicon steel sheet material providing a kind of production cycle shorter is needed.
Summary of the invention
The object of this invention is to provide a kind of high magnetic induction grain-oriented silicon steel preparation of plates method that can shorten the production cycle.
To achieve these goals, the invention provides the production method that Thin Specs high magnetic induction grain-oriented silicon steel prepared by a kind of Low Temperature Hot Rolling plate, wherein, the method comprises: S1, be hot-rolled sheet by the hot rolling of silicon steel strand; S2, normalizing thermal treatment is carried out to described hot-rolled sheet; S3, by cold rolling for the described hot-rolled sheet after normalizing thermal treatment be cold-reduced sheet; S4, decarburizing annealing process is carried out to described cold-reduced sheet; S5, in described cold-reduced sheet surface-coated MgO coating; S6, carry out the high temperature anneal to the described cold-reduced sheet of coating MgO coating, wherein, S6 step comprises: inserted by described cold-reduced sheet in equipment for Heating Processing and heat up with the first temperature rise rate, start to pass into NH when temperature reaches 850-870 DEG C in described equipment for Heating Processing
3, stop when temperature reaches the first temperature passing into NH
3, be then warmed up to the second temperature with the second temperature rise rate and be incubated.
Preferably, in step s 6, described first temperature is 880-900 DEG C, and described second temperature is 1180-1200 DEG C, and the soaking time of described cold-reduced sheet at described second temperature is 15-20h.
Preferably, in step s 6, described first temperature rise rate is 8-10K/s, and described second temperature rise rate is 18-20K/s.
Preferably, in step s 6, NH is passed into
3speed be 1-2L/min.
Preferably, in step s 6, the atmosphere of described insulation is pure hydrogen atmosphere.
Preferably, in step sl, hot rolling is carried out after described silicon steel strand being heated to 1000-1200 DEG C.
Preferably, in step sl, the hot-rolled sheet of the described silicon steel strand finish to gauge being 300mm-330mm by thickness by 7-9 hot rolling pass to be thickness be 2.2-2.4mm, wherein, the draft of each hot rolling pass is 30%-60%.
Preferably, in step s3, by the cold-reduced sheet of 6-8 cold rolling pass to be thickness by described hot-rolled sheet finish to gauge be 0.16-0.18mm, wherein, the draft of each cold rolling pass is 20%-40%.
Preferably, in step s3, between adjacent cold rolling pass, carry out aging strengthening model: insert in equipment for Heating Processing by described hot-rolled sheet, at 240-250 DEG C, be incubated 5-10min.
Preferably, carry out two-part normalizing thermal treatment in step s 2, wherein, step S2 comprises: S2-1, described hot-rolled sheet is incubated 150-160s at 1050 DEG C ~ 1100 DEG C; S2-2, described hot-rolled sheet air cooling is incubated 90-100s to 900-950 DEG C; S2-3, by described hot-rolled sheet air cooling to 800-820 DEG C, be then placed in 90-100 DEG C of water and cool.
Preferably, in step s3, before cold rolling, cleanup acid treatment is carried out to described hot-rolled sheet.
Preferably, in step s 4 which, described cold-reduced sheet is inserted in equipment for Heating Processing, at 850-900 DEG C, is incubated 3-4min, by the volume ratio of nitrogen and hydrogen be simultaneously the mixed gas of 4-5:3 wetting in the water of 80-85 DEG C after pass in described equipment for Heating Processing and carry out carbonization treatment.
Preferably, the mass percent of the chemical composition of described silicon steel strand is: Si:2.6 ~ 3.45%, C:0.050 ~ 0.080%, Mn:0.08 ~ 0.12%, S:0.005 ~ 0.007%, Cr:0.08 ~ 0.12%, Cu:0.006 ~ 0.012%, Al:0.02 ~ 0.03%, N:0.0050 ~ 0.008%, Sn:0.04 ~ 0.06%, surplus is Fe.
By technique scheme, by nitridation steps being attached in the high temperature anneal process, not only save the nitridation steps after decarburizing annealing, save the energy, also disposablely complete nitriding and high temperature secondary recrystallize in the high temperature annealing stage, simplify production technique, save production cost.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides the production method that Thin Specs high magnetic induction grain-oriented silicon steel prepared by a kind of Low Temperature Hot Rolling plate, wherein, the method comprises: S1, be hot-rolled sheet by the hot rolling of silicon steel strand; S2, normalizing thermal treatment is carried out to described hot-rolled sheet; S3, by cold rolling for the described hot-rolled sheet after normalizing thermal treatment be cold-reduced sheet; S4, decarburizing annealing process is carried out to described cold-reduced sheet; S5, in described cold-reduced sheet surface-coated MgO coating; S6, carry out the high temperature anneal to the described cold-reduced sheet of coating MgO coating, wherein, S6 step comprises: inserted by described cold-reduced sheet in equipment for Heating Processing and heat up with the first temperature rise rate, start to pass into NH when temperature reaches 850-870 DEG C in described equipment for Heating Processing
3, stop when temperature reaches the first temperature passing into NH
3, be then warmed up to the second temperature with the second temperature rise rate and be incubated.
In preparation method on the above, nitridation steps is attached in the high temperature anneal process, not only save the nitridation steps after decarburizing annealing, save the energy, also disposablely complete nitriding and high temperature secondary recrystallize in the high temperature annealing stage, simplify production technique, save production cost.
The method core concept is, nitriding is carried out before magnesium oxide coating forms Magnesium Silicate q-agent layer, Magnesium Silicate q-agent bottom is generally formed at 900 DEG C ~ 1000 DEG C, carrying out nitriding at 850 ~ 900 DEG C can avoid the formation of Magnesium Silicate q-agent bottom to hinder nitrogenizing effect, therefore high-temperature annealing process and nitriding process can be combined, reduce operation steps.Directly can form effective AlN inhibitor after nitriding, instead of form Si
3n
4(Si, Mn) N particle.Adopt the method, the transition process of nitride particles can be saved when high temperature annealing, shorten the high temperature annealing time.
Further, in step s 6, described first temperature is 880-900 DEG C, and described second temperature is 1180-1200 DEG C, and the soaking time of described cold-reduced sheet at 1180-1200 DEG C is 15-20h.As mentioned above, Magnesium Silicate q-agent reaches 900 DEG C in temperature to start to be formed later, therefore, can stop when temperature reaches 880-900 DEG C passing into NH
3, what remain afterwards still can support that Nitrizing Treatment process is carried out.At continuing to be warmed up to 1180-1200 DEG C, also high temperature annealing is carried out in insulation.
In addition, in step s 6, described first temperature rise rate is 8-10K/s, and described second temperature rise rate is 18-20K/s.
In addition, in step s 6, NH is passed into
3speed be 1-2L/min.
In addition, in step s 6, the atmosphere of described insulation is pure hydrogen atmosphere, protects the surface of described cold-reduced sheet not by high temperature erosion.
In addition, in step sl, hot rolling is carried out after described strand being heated to 1000-1200 DEG C.
Wherein, in step sl, the hot-rolled sheet of the described silicon steel strand finish to gauge being 300-330mm by thickness by 7-9 hot rolling pass to be thickness be 2.2-2.4mm, wherein, the draft of each hot rolling pass is 30%-60%.Wherein the draft of hot rolling pass can little by little reduce, and little by little improves rolling accuracy.
Further, in step s3, by the cold-reduced sheet of 6-8 cold rolling pass to be thickness by described hot-rolled sheet finish to gauge be 0.16-0.18mm, wherein, the draft of each cold rolling pass is 20%-40%.
In addition, in step s3, between cold rolling pass, carry out aging strengthening model: insert in equipment for Heating Processing by described hot-rolled sheet, at 240-250 DEG C, be incubated 5-10min.After avoiding secondary recrystallization, grain-size is excessive and cause iron loss to raise, and increases Goss texture component after primary recrystallization, reduces secondary recrystallization crystal particle dimension.Wherein, aging heat treatment number of times can be selected as required and carry out between corresponding cold rolling pass.Such as, in step s3, can be undertaken cold rolling by 6 passages, and can between the first passage and second time, the 3rd between passage and four-pass and between four-pass and the 5th passage, carry out an aging strengthening model respectively.
In addition, carry out two-part normalizing thermal treatment in step s 2, wherein, step S2 comprises: S2-1, described hot-rolled sheet is incubated 150-160s at 1050 DEG C ~ 1100 DEG C; S2-2, described hot-rolled sheet air cooling is incubated 90-100s to 900-950 DEG C; S2-3, by described hot-rolled sheet air cooling to 800-820 DEG C, be then placed in 90-100 DEG C of water and cool.Adopt two-section type normalizing thermal treatment that particle can be made fully to separate out, ensure the homogeneity of primary recrystallization tissue.
In addition, in step s3, before cold rolling, cleanup acid treatment is carried out to described hot-rolled sheet, to remove the impurity on described hot-rolled sheet surface.Hydrochloric acid, sulfuric acid or other common acid or mixing acid washing lotion can be used to carry out pickling, and use clear water to wash.
In addition, in step s 4 which, described cold-reduced sheet is inserted in equipment for Heating Processing, at 850-900 DEG C, is incubated 3-4min, by the volume ratio of nitrogen and hydrogen be simultaneously the mixed gas of 4-5:3 wetting in the water of 80-85 DEG C after pass in described equipment for Heating Processing and carry out carbonization treatment.High magentic induction oriented steel requires that carbon content is low as much as possible, therefore needs to carry out carbonization treatment after rolling.Can temperature be improved after the mixed gas of nitrogen and hydrogen is wetting in the water of comparatively high temps, the speed of decarburization can be accelerated, good oxide film can also be formed simultaneously.
In addition, the mass percent of the chemical composition of described silicon steel strand is: Si:2.6 ~ 3.45%, C:0.050 ~ 0.080%, Mn:0.08 ~ 0.12%, S:0.005 ~ 0.007%, Cr:0.08 ~ 0.12%, Cu:0.006 ~ 0.012%, Al:0.02 ~ 0.03%, N:0.0050 ~ 0.008%, Sn:0.04 ~ 0.06%, surplus is Fe.Wherein, inevitably there is other a small amount of impurity in described silicon steel strand, be not described further at this.
Below by embodiment, advantage of the present invention will be described.
The mass percent of the chemical composition of silicon steel strand adopted in the examples below is: Si:2.6 ~ 3.45%, C:0.050 ~ 0.080%, Mn:0.08 ~ 0.12%, S:0.005 ~ 0.007%, Cr:0.08 ~ 0.12%, Cu:0.006 ~ 0.012%, Al:0.02 ~ 0.03%, N:0.0050 ~ 0.008%, Sn:0.04 ~ 0.06%, surplus is Fe and inevitable impurity.
Embodiment 1
S1, by the silicon steel strand of 300mm thickness, (mass percent of the chemical composition of silicon steel strand is: Si:2.6%, C:0.050%, Mn:0.08%, S:0.005%, Cr:0.08%, Cu:0.006%, Al:0.02%, N:0.0050%, Sn:0.04%, surplus is Fe and inevitable impurity) be heated to 1000 DEG C after carry out the hot-rolled sheet that hot rolling obtains 2.4mm, the following table 1 of its hot rolling system
Table 1
| Hot rolling pass | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Draft | 60％ | 54％ | 51％ | 49％ | 50％ | 45％ | 37％ |
S2, described hot-rolled sheet is carried out two-section type normalizing thermal treatment, wherein,
S2-1, described hot-rolled sheet is incubated 155s at 1080 DEG C;
S2-2, described hot-rolled sheet air cooling is incubated 100s to 900 DEG C;
S2-3, by described hot-rolled sheet air cooling to 820 DEG C, be then placed in 90 DEG C of water and cool.
S3, described hot-rolled sheet is carried out being cold rolled to 0.16mm, wherein, described cold rolling system as with following table 2,
Table 2
S4, described cold-reduced sheet is inserted in equipment for Heating Processing, at 880 DEG C, is incubated 3min, by the volume ratio of nitrogen and hydrogen be simultaneously the mixed gas of 4:3 wetting in the water of 80 DEG C after pass in described equipment for Heating Processing and carry out carbonization treatment.
Cold-reduced sheet coating MgO coating after S5, taking-up carbonization treatment.
S6, to be inserted in equipment for Heating Processing by described cold-reduced sheet and heat up with the temperature rise rate of 10K/s, when temperature reaches 850 DEG C, the flow velocity started with 1L/min in described equipment for Heating Processing passes into NH
3, stop passing into NH when temperature reaches 880 DEG C
3, be then warmed up to 1180 DEG C with the temperature rise rate of 20K/s and be incubated 18h under pure hydrogen atmosphere.
Embodiment 2
S1, by the silicon steel strand of 330mm thickness (mass percent of the chemical composition of silicon steel strand is:: Si:3.45%, C:0.080%, Mn:0.12%, S:0.007%, Cr:0.12%, Cu:0.012%, Al:0.03%, N:0.008%, Sn:0.06%, surplus is Fe and inevitable impurity) be heated to 1200 DEG C after carry out the hot-rolled sheet that hot rolling obtains 2.2mm, the following table 3 of its hot rolling system
Table 3
| Hot rolling pass | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Draft | 58％ | 52％ | 49％ | 42％ | 40％ | 39％ | 36％ | 32％ | 30％ |
S2, described hot-rolled sheet is carried out two-section type normalizing thermal treatment, wherein,
S2-1, described hot-rolled sheet is incubated 150s at 1050 DEG C;
S2-2, described hot-rolled sheet air cooling is incubated 90s to 950 DEG C;
S2-3, by described hot-rolled sheet air cooling to 800 DEG C, be then placed in 95 DEG C of water and cool.
S3, described hot-rolled sheet is carried out being cold rolled to 0.18mm, wherein, described cold rolling system as with following table 4,
Table 4
S4, described cold-reduced sheet is inserted in equipment for Heating Processing, at 850 DEG C, is incubated 3.5min, by the volume ratio of nitrogen and hydrogen be simultaneously the mixed gas of 1.5:1 wetting in the water of 80 DEG C after pass in described equipment for Heating Processing and carry out carbonization treatment.
Cold-reduced sheet coating MgO coating after S5, taking-up carbonization treatment.
S6, to be inserted in equipment for Heating Processing by described cold-reduced sheet and heat up with the temperature rise rate of 9K/s, when temperature reaches 870 DEG C, the flow velocity started with 1.5L/min in described equipment for Heating Processing passes into NH
3, stop passing into NH when temperature reaches 900 DEG C
3, be then warmed up to 1190 DEG C with the temperature rise rate of 18K/s and be incubated 15h under pure hydrogen atmosphere.
Embodiment 3
S1, by the silicon steel strand of 320mm thickness, (mass percent of the chemical composition of silicon steel strand is: Si:3.05%, C:0.070%, Mn:0.09%, S:0.006%, Cr:0.11%, Cu:0.010%, Al:0.025%, N:0.007%, Sn:0.05%, surplus is Fe and inevitable impurity) be heated to 1100 DEG C after carry out the hot-rolled sheet that hot rolling obtains 2.3mm, the following table 5 of its hot rolling system
Table 5
| Hot rolling pass | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Draft | 57％ | 51％ | 47％ | 49％ | 49％ | 40％ | 41％ | 30％ |
S2, described hot-rolled sheet is carried out two-section type normalizing thermal treatment, wherein,
S2-1, described hot-rolled sheet is incubated 160s at 1100 DEG C;
S2-2, described hot-rolled sheet air cooling is incubated 95s to 925 DEG C;
S2-3, by described hot-rolled sheet air cooling to 810 DEG C, be then placed in 100 DEG C of water and cool.
S3, described hot-rolled sheet is carried out being cold rolled to 0.17mm, wherein, described cold rolling system as with following table 2,
Table 6
S4, described cold-reduced sheet is inserted in equipment for Heating Processing, at 900 DEG C, is incubated 4min, by the volume ratio of nitrogen and hydrogen be simultaneously the mixed gas of 5:3 wetting in the water of 80 DEG C after pass in described equipment for Heating Processing and carry out carbonization treatment.
Cold-reduced sheet coating MgO coating after S5, taking-up carbonization treatment.
S6, to be inserted in equipment for Heating Processing by described cold-reduced sheet and heat up with the temperature rise rate of 8K/s, when temperature reaches 860 DEG C, the flow velocity started with 2L/min in described equipment for Heating Processing passes into NH
3, stop passing into NH when temperature reaches 890 DEG C
3, be then warmed up to 1200 DEG C with the temperature rise rate of 19K/s and be incubated 20h under pure hydrogen atmosphere.
Comparative example
Carry out Nitrizing Treatment and the high temperature anneal successively by the cold-reduced sheet prepared through step S1-S4 in above embodiment 3, wherein, described cold-reduced sheet is warmed up to 860 DEG C, passes into NH
3, nitriding time 1min; Cold-reduced sheet after nitriding is incubated 20h at 1200 DEG C under pure hydrogen atmosphere.
The magnetic property of the silicon plate prepared by the above three embodiment and comparative example as with following table 7,
Table 7
| Embodiment | Magnetic strength B 8 | Iron loss P 17/50 |
| 1 | 1.91 | 0.9 |
| 2 | 1.90 | 1.0 |
| 3 | 1.92 | 0.86 |
| Comparative example | 1.82 | 1.33 |
Visible by above table 7, compared with the product prepared with traditional method, the magnetic property of silicon plate prepared by method of the present invention is good, and the combination of nitridation steps and high-temperature annealing step does not cause product magnetic property to decline, simplify production technique simultaneously, save production cost.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (13)
1. a production method for Thin Specs high magnetic induction grain-oriented silicon steel prepared by Low Temperature Hot Rolling plate, it is characterized in that, the method comprises:
S1, be hot-rolled sheet by the hot rolling of silicon steel strand;
S2, normalizing thermal treatment is carried out to described hot-rolled sheet;
S3, by cold rolling for the described hot-rolled sheet after normalizing thermal treatment be cold-reduced sheet;
S4, decarburizing annealing process is carried out to described cold-reduced sheet;
S5, in described cold-reduced sheet surface-coated MgO coating;
S6, the high temperature anneal is carried out to the described cold-reduced sheet of coating MgO coating,
Wherein, S6 step comprises:
Described cold-reduced sheet is inserted in equipment for Heating Processing and heat up with the first temperature rise rate, start when temperature reaches 850-870 DEG C to pass into NH in described equipment for Heating Processing
3, stop when temperature reaches the first temperature passing into NH
3, be then warmed up to the second temperature with the second temperature rise rate and be incubated.
2. method according to claim 1, is characterized in that, in step s 6, described first temperature is 880-900 DEG C, and described second temperature is 1180-1200 DEG C, and the soaking time of described cold-reduced sheet at described second temperature is 15-20h.
3. method according to claim 1, is characterized in that, in step s 6, described first temperature rise rate is 8-10K/s, and described second temperature rise rate is 18-20K/s.
4. according to claim 1ly to seek, it is characterized in that, in step s 6, pass into NH
3speed be 1-2L/min.
5. method according to claim 1, is characterized in that, in step s 6, the atmosphere of described insulation is pure hydrogen atmosphere.
6. method according to claim 1, is characterized in that, in step sl, carries out hot rolling after described silicon steel strand is heated to 1000-1200 DEG C.
7. method according to claim 6, it is characterized in that, in step sl, the hot-rolled sheet of the described silicon steel strand finish to gauge being 300-330mm by thickness by 7-9 hot rolling pass to be thickness be 2.2-2.4mm, wherein, the draft of each hot rolling pass is 30%-60%.
8. method according to claim 7, is characterized in that, in step s3, by the cold-reduced sheet of 6-8 cold rolling pass to be thickness by described hot-rolled sheet finish to gauge be 0.16-0.18mm, wherein, the draft of each cold rolling pass is 20%-40%.
9. method according to claim 8, is characterized in that, in step s3, between cold rolling pass, carries out aging strengthening model: insert in equipment for Heating Processing by described hot-rolled sheet, at 240-250 DEG C, is incubated 5-10min.
10. method according to claim 1, is characterized in that, carry out two-part normalizing thermal treatment in step s 2, wherein, step S2 comprises:
S2-1, described hot-rolled sheet is incubated 150-160s at 1050 DEG C ~ 1100 DEG C;
S2-2, described hot-rolled sheet air cooling is incubated 90-100s to 900-950 DEG C;
S2-3, by described hot-rolled sheet air cooling to 800-820 DEG C, be then placed in 90-100 DEG C of water and cool.
11. methods according to claim 1, is characterized in that, in step s3, before cold rolling, carry out cleanup acid treatment to described hot-rolled sheet.
12. methods according to claim 1, it is characterized in that, in step s 4 which, described cold-reduced sheet is inserted in equipment for Heating Processing, at 850-900 DEG C, be incubated 3-4min, by the volume ratio of nitrogen and hydrogen be simultaneously the mixed gas of 4-5:3 wetting in the water of 80-85 DEG C after pass in described equipment for Heating Processing and carry out carbonization treatment.
13. according to the method in claim 1-12 described in any one, it is characterized in that, the mass percent of the chemical composition of described silicon steel strand is: Si:2.6 ~ 3.45%, C:0.050 ~ 0.080%, Mn:0.08 ~ 0.12%, S:0.005 ~ 0.007%, Cr:0.08 ~ 0.12%, Cu:0.006 ~ 0.012%, Al:0.02 ~ 0.03%, N:0.0050 ~ 0.008%, Sn:0.04 ~ 0.06%, surplus is Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510312474.4A CN104894354B (en) | 2015-06-09 | 2015-06-09 | A kind of Low Temperature Hot Rolling plate prepares the production method of Thin Specs high magnetic induction grain-oriented silicon steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510312474.4A CN104894354B (en) | 2015-06-09 | 2015-06-09 | A kind of Low Temperature Hot Rolling plate prepares the production method of Thin Specs high magnetic induction grain-oriented silicon steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104894354A true CN104894354A (en) | 2015-09-09 |
| CN104894354B CN104894354B (en) | 2017-11-10 |
Family
ID=54027304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510312474.4A Expired - Fee Related CN104894354B (en) | 2015-06-09 | 2015-06-09 | A kind of Low Temperature Hot Rolling plate prepares the production method of Thin Specs high magnetic induction grain-oriented silicon steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104894354B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105296917A (en) * | 2015-11-23 | 2016-02-03 | 东北大学 | Method for preparing high-silicon steel from low-silicon steel |
| CN109554525A (en) * | 2018-12-03 | 2019-04-02 | 武汉钢铁有限公司 | A kind of manufacturing method of mirror surface-oriented silicon steel |
| CN114058961A (en) * | 2021-11-15 | 2022-02-18 | 宝武轻材(武汉)有限公司 | Non-oriented silicon steel strip with thickness less than or equal to 0.15mm and production method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6361621B1 (en) * | 1997-03-14 | 2002-03-26 | Acciai Speciali Terni S.P.A. | Process for the inhibition control in the production of grain-oriented electrical sheets |
| CN103882289A (en) * | 2014-03-25 | 2014-06-25 | 新万鑫（福建）精密薄板有限公司 | Production method for manufacturing cold-rolled oriented silicon steel with high magnetic strength by using generally oriented steel raw material |
-
2015
- 2015-06-09 CN CN201510312474.4A patent/CN104894354B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6361621B1 (en) * | 1997-03-14 | 2002-03-26 | Acciai Speciali Terni S.P.A. | Process for the inhibition control in the production of grain-oriented electrical sheets |
| CN103882289A (en) * | 2014-03-25 | 2014-06-25 | 新万鑫（福建）精密薄板有限公司 | Production method for manufacturing cold-rolled oriented silicon steel with high magnetic strength by using generally oriented steel raw material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105296917A (en) * | 2015-11-23 | 2016-02-03 | 东北大学 | Method for preparing high-silicon steel from low-silicon steel |
| CN109554525A (en) * | 2018-12-03 | 2019-04-02 | 武汉钢铁有限公司 | A kind of manufacturing method of mirror surface-oriented silicon steel |
| CN114058961A (en) * | 2021-11-15 | 2022-02-18 | 宝武轻材(武汉)有限公司 | Non-oriented silicon steel strip with thickness less than or equal to 0.15mm and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104894354B (en) | 2017-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102041440B (en) | Method for producing high magnetic induction grain-oriented silicon steel | |
| CN104018068B (en) | Method for preparing high-magnetic-induction oriented silicon steel with thickness of 0.18mm | |
| CN101845582B (en) | Production method of high magnetic induction oriented silicon steel | |
| RU2609605C2 (en) | Method of producing regular grain-oriented silicon steel with high magnetic induction | |
| CN103703151B (en) | The manufacture method of orientation electromagnetic steel plate | |
| CN101775548B (en) | Method for producing low nitriding amount and high magnetic induction oriented silicon steel strip | |
| CN101775547A (en) | Production method of high magnetic induction grain-oriented silicon steel strip | |
| CN1982483A (en) | Production of non-directional cold-rolling silicon steel disc | |
| CN103774042B (en) | A kind of CSP high magnetic induction grain-oriented silicon steel and preparation method thereof | |
| CN101748257A (en) | Method for manufacturing directional silicon steel | |
| CN103911545A (en) | Preparation method of electrical steel strip with strong goss texture occupation rate and high magnetic induction orientation | |
| CN107002161B (en) | Oriented electrical steel and its manufacturing method | |
| CN103667874A (en) | Production method for shortening furnace time of oriented silicon steel during high-temperature annealing period | |
| JP2018066040A (en) | HOT-ROLLED SHEET ANNEALING FACILITY OF Si-CONTAINING HOT-ROLLED STEEL SHEET, HOT-ROLLED SHEET ANNEALING METHOD AND DESCALING METHOD | |
| CN102345001A (en) | Method for preparing low-grade non-oriented electrical steel processed by rare earth | |
| CN106399819A (en) | Oriented silicon steel and preparing method thereof | |
| CN104894354A (en) | Production method for preparing thin-specification high-magnetic-strength oriented silicon steel through low-temperature hot rolled plate | |
| CN101348854B (en) | Method for producing oriented electrical steel by low temperature heating | |
| CN102534363A (en) | Energy-saving and high-production-efficiency method for preparing common grain-oriented silicon steel | |
| CN101348851B (en) | Method for producing common oriented electrical steel by low temperature casting blank heating | |
| CN103031420B (en) | Production method of oriented silicon steel with excellent magnetic performance | |
| CN102492816B (en) | Method for producing high magnetic induction oriented silicon steel strip through batch nitriding | |
| CN101603148B (en) | Method for producing economic low-temperature heating oriented electrical steel | |
| CN113403463A (en) | Production method for improving cold rolling processability of oriented silicon steel | |
| JP2023508029A (en) | Grain-oriented electrical steel sheet and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171110 Termination date: 20190609 |