CN114703421A - High-phosphorus high-magnetic-induction non-oriented silicon steel and production method thereof - Google Patents
High-phosphorus high-magnetic-induction non-oriented silicon steel and production method thereof Download PDFInfo
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Abstract
The invention relates to a high-phosphorus high-magnetic-induction non-oriented silicon steel and a production method thereof, wherein the non-oriented silicon steel comprises the following chemical components: c is less than or equal to 0.0030%, Si: 0.15% -1.50%, Als: 0.10-0.5%, Mn: 0.10% -0.50%, P: 0.080-0.25%, S is less than or equal to 0.0020%, N is less than or equal to 0.0020%, Ti is less than or equal to 0.0020%, V is less than or equal to 0.0020%, Nb is less than or equal to 0.0020%, Zr is less than or equal to 0.0020%, As is less than or equal to 0.0020%, Sn andor Sb: 0.03 to 0.12 percent of the total weight of the alloy, and the balance of Fe and inevitable residual elements. The invention has the advantages that: the non-oriented silicon steel can be produced on the existing and traditional production lines, and under the condition of reducing the addition of silicon, aluminum and manganese alloys, the iron loss is improved, the magnetic induction performance is improved, the mechanical performance is improved, and the punching performance is improved.
Description
Technical Field
The invention relates to high-phosphorus high-magnetic-induction non-oriented silicon steel and a production method thereof.
Background
In the production of the non-oriented silicon steel, the phosphorus element has the same effect as alloy elements such as silicon, aluminum and the like in the aspect of increasing the resistivity, has higher significance in a certain range, is better in the aspect of improving the punching performance of products, and can greatly reduce the alloy cost in the corresponding design. However, under different component designs and process conditions, the advantages of the phosphorus element are difficult to be exerted, and particularly, the phosphorus element is greatly restricted in production due to the fact that grain boundary segregation of phosphorus is serious, plasticity is poor, and hot rolling and cold rolling strip breakage are difficult to control in the conventional metallurgy process production.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide high-phosphorus high-magnetic-induction non-oriented silicon steel and a production method thereof, which realize the improvement of the yield by the design and application of microalloy elements and without frequent process treatment.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a high phosphorus high magnetic induction non-oriented silicon steel and its preparation method, the chemical composition of the non-oriented silicon steel:
c is less than or equal to 0.0030%, Si: 0.15% -1.50%, Als: 0.10-0.5%, Mn: 0.10% -0.50%, P: 0.080-0.25%, S is less than or equal to 0.0020%, N is less than or equal to 0.0020%, Ti is less than or equal to 0.0020%, V is less than or equal to 0.0020%, Nb is less than or equal to 0.0020%, Zr is less than or equal to 0.0020%, As is less than or equal to 0.0020%, Sn andor Sb: 0.03 to 0.12 percent of the total weight of the alloy, and the balance of Fe and inevitable residual elements.
C: magnetic aging of the product is avoided, and the annealing process adopts non-decarburized full nitrogen protection, high-efficiency and low-cost production;
al: under the condition of main alloy decrement, the performance of high-magnetic-induction medium-low grade products is ensured;
n, Ti, V, Nb, Zr and As are less than or equal to 0.0020%: the steel with high cleanliness ensures the function of high phosphorus and microalloy design elements;
sn or Sb: the microalloy elements adopted by the technology are matched with a high-phosphorus component design in the process, so that phosphorus grain boundary precipitation is controlled, the grain boundary energy and the surface energy are reduced, the improvement of texture components is promoted, and finally, the magnetic property structure with proper size, uniform crystal grains and coarsened precipitates is controlled.
A high-phosphorus high-magnetic induction non-oriented silicon steel and a production method thereof, the production process route is as follows: the method comprises the following steps of molten iron desulphurization, converter smelting, RH refining, continuous casting, hot rolling, acid washing, cold rolling, continuous furnace annealing, coating, performance inspection and packaging, and specifically comprises the following steps:
1) smelting the molten steel to a target component, and then casting the molten steel into a blank in a continuous casting mode;
2) the slab temperature of a soaking section of a hot-rolled slab heating furnace is 1000-1150 ℃, the finishing temperature is controlled to be 800-950 ℃, the water mist laminar cooling is carried out, the coiling temperature is controlled to be 650-750 ℃, the hot-rolled coil is stacked and slowly cooled, and the cooling speed is controlled to be lower than 50 ℃/h;
the whole temperature system design is to promote the phosphorus element matrix to be fully dissolved in the solution, promote the Sn to be enriched in the grain boundary under the coiling temperature range and the cooling control, and inhibit the phosphorus segregation and the grain boundary precipitation; the lower cooling speed can promote the coarsening and aggregation of two-phase particles, and is beneficial to improving the electromagnetic performance of a finished product;
3) after acid washing, cold rolling to the thickness of a finished product, wherein the temperature of a steel strip before cold rolling is not lower than 30 ℃;
4) the temperature of a rapid heating section of the continuous annealing furnace is 950-1150 ℃, the temperature of a soaking section is 750-920 ℃, and the protection is carried out in a full nitrogen dry atmosphere; setting the annealing process speed to be 120-150 m/min according to the furnace length and the main alloy components, meeting the grain size of 4-6 grades, carrying out gradient cooling, ensuring the soaking temperature of the strip steel to be between 700 ℃, controlling the cooling speed to be below 100 ℃/min within each furnace section for more than 15s and more than 600 ℃.
Compared with the prior art, the invention has the beneficial effects that:
1. the non-oriented silicon steel can be produced on the existing and traditional production lines, and the equipment does not need to be modified;
2. under the condition of reducing the addition of silicon, aluminum and manganese alloys, the iron loss is improved, the magnetic induction performance is improved, the mechanical performance is improved, and the punching sheet performance is improved;
3. under the control of steel cleanliness which is commonly adopted in modern times, a single microalloy element is added, so that the smelting difficulty is reduced, the refining time is shortened, and the process cost is reduced;
4. the requirements of hydrogen and nitrogen protective gas and the wet atmosphere decarburization in the traditional heat treatment process are changed, and the process cost is reduced;
5. through the control of the uniform structure and the coarsening technology of the precipitate and the segregation control of the phosphorus alloy element, the rolling yield of the high-phosphorus product is improved, and the operating index requirement of mass production is met.
Detailed Description
The present invention is described in detail below, but it should be noted that the practice of the present invention is not limited to the following embodiments.
Example 1:
the non-oriented silicon steel comprises the following chemical components in percentage by mass:
c: 0.0027%, Si: 0.60%, Mn: 0.25%, P: 0.15%, S: 0.0018%, Als: 0.20%, N: 0.0015%, Ti: 0.0012%, V: 0.0014%, Nb: 0.0012%, As: 0.0010%, Sn: 0.075% and the balance iron and inevitable impurity elements.
The production method comprises the following steps:
a) smelting and continuous casting: smelting in a converter, carrying out RH vacuum refining treatment, controlling the components of molten steel according to the requirements, and casting into a plate blank with the thickness of 230 mm;
b) the average temperature of the hot-rolled plate blank is 1110 ℃, and the hot-rolled plate blank enters a finishing mill group for rolling after being initially rolled to 45 mm. The finish rolling start temperature is 1000 ℃, the finish rolling temperature is 870 ℃, the coiling temperature is 710 ℃, and the thickness of the hot rolled plate is 2.6 mm; stacking the hot rolled coils for slow cooling for 2 hours, wherein the temperature reaches 640 ℃;
c) pickling and cold rolling to the thickness of 0.50 mm; the temperature of the steel strip before cold rolling is 50 ℃;
d) and after cold rolling, the temperature of a continuous annealing rapid heating section is 1020 ℃, the temperature of a soaking section is 800 ℃, strip steel is kept for 15s in each furnace section at 700-800 ℃ (the soaking temperature is 800 ℃), the strip steel is protected by total nitrogen, the process speed is 140m/min, continuous annealing is carried out, and the grade of the grain structure is 5.5.
Comparative example 1
C: 0.025%, Si: 0.85%, Mn: 030%, P: 0.012%, S: 0.0020%, Als: 0.30%, N: 0.0015 percent, and the balance of iron and inevitable impurity elements. The average temperature of a hot-rolled plate blank is 1130 ℃, the hot-rolled plate blank enters a finishing mill set for rolling after being initially rolled to 40mm, the finishing rolling start temperature is 1020 ℃, the finishing rolling temperature is 860 ℃, the coiling temperature is 700 ℃, and the thickness of the hot-rolled plate is 2.3 mm; cold rolling is directly carried out on the steel strip with the thickness of 0.5mm, the annealing temperature of the finished product is 1050 ℃ and 900 ℃, hydrogen and nitrogen protection is carried out, the process speed is 130m/min, continuous annealing is carried out, and the grade of the grain structure is 5.5.
Example 2:
the non-oriented silicon steel comprises the following chemical components in percentage by mass:
c: 0.0025%, Si: 1.25%, Mn: 0.30%, P: 0.18%, S: 0.0011%, Als: 0.25%, N: 0.0018%, Ti: 0.0010%, V: 0.0017%, Nb: 0.0013%, As: 0.0007%, Sn: 0.105%, and the balance of iron and inevitable impurity elements.
The production method comprises the following steps:
a) smelting and continuous casting: smelting in a converter, carrying out RH vacuum refining treatment, controlling the components of molten steel according to the requirements, and casting into a plate blank with the thickness of 230 mm;
b) the average temperature of the hot-rolled plate blank is 1000 ℃, and the hot-rolled plate blank enters a finishing mill group for rolling after being initially rolled to 40 mm. The finish rolling start temperature is 960 ℃, the finish rolling temperature is 820 ℃, the coiling temperature is 680 ℃, and the thickness of the hot rolled plate is 2.3 mm;
c) cold rolling to 0.50mm after acid cleaning; the temperature of the steel strip before cold rolling is 60 ℃;
d) after cold rolling, the temperature of a continuous annealing rapid heating section is 1000 ℃, the temperature of a soaking section is 860 ℃, the temperature of strip steel is kept for 18s in each furnace section at 700-860 ℃, the process speed is 130m/min, the continuous annealing is carried out, and the grade of grain structure is 4.5.
Comparative example 2
C: 0.025%, Si: 1.65%, Mn: 0.32%, P: 0.008%, S: 0.0025%, Als: 0.35%, N: 0.0022% and the balance of iron and inevitable impurity elements. The average temperature of a hot-rolled plate blank is 1130 ℃, the hot-rolled plate blank is subjected to initial rolling to 40mm and then enters a finishing mill set for rolling, the finishing rolling initial temperature is 1020 ℃, the finishing rolling temperature is 860 ℃, the coiling temperature is 700 ℃, and the thickness of the hot-rolled plate is 2.5 mm; cold rolling is directly carried out on the steel strip with the thickness of 0.5mm, the annealing temperature of the finished product is 1050 ℃ and 880 ℃, the hydrogen and nitrogen protection is carried out, the process speed is 130m/min, continuous annealing is carried out, and the grade of the grain structure is 4.0.
Example 3:
the non-oriented silicon steel comprises the following chemical components in percentage by mass:
c: 0.0026%, Si: 1.18%, Mn: 0.30%, P: 0.20%, S: 0.0011%, Als: 0.35%, N: 0.0017%, Ti: 0.0015%, V: 0.0018%, Nb: 0.0015%, As: 0.0007%, Sb: 0.075% and the balance iron and inevitable impurity elements.
The production method comprises the following steps:
a) smelting and continuous casting: smelting in a converter, carrying out RH vacuum refining treatment, controlling the components of molten steel according to the requirements, and casting into a plate blank with the thickness of 230 mm;
b) the average temperature of the hot-rolled plate blank is 1000 ℃, and the hot-rolled plate blank enters a finishing mill group for rolling after being initially rolled to 40 mm. The start rolling temperature of finish rolling is 960 ℃, the finish rolling temperature is 810 ℃, the coiling temperature is 680 ℃, and the thickness of the hot rolled plate is 2.3 mm;
c) cold rolling to 0.50mm after acid cleaning; the temperature of the steel strip before cold rolling is 55 ℃;
d) after cold rolling, the temperature of a continuous annealing rapid heating section is 1050 ℃, the temperature of a soaking section is 880 ℃, the temperature of strip steel is kept for 16s in each furnace section at 700-880 ℃, the process speed is 140m/min, continuous annealing is carried out, and the grade of grain structure is 5.0.
Comparative example 3
C: 0.025%, Si: 1.55%, Mn: 0.31%, P: 0.008%, S: 0.0028%, Als: 0.25%, N: 0.0024% and the balance of iron and inevitable impurity elements. The average temperature of a hot-rolled plate blank is 1140 ℃, the hot-rolled plate blank enters a finishing mill set for rolling after being initially rolled to 40mm, the starting temperature of finishing rolling is 1010 ℃, the finishing temperature is 840 ℃, the coiling temperature is 680 ℃, and the thickness of the hot-rolled plate is 2.5 mm; cold rolling is directly carried out on the steel strip with the thickness of 0.5mm, the annealing temperature of the finished product is 1050 ℃ and 880 ℃, the hydrogen and nitrogen protection is carried out, the process speed is 130m/min, continuous annealing is carried out, and the grade of the grain structure is 4.5.
Example 4:
the non-oriented silicon steel comprises the following chemical components in percentage by mass:
c: 0.0026%, Si: 1.20%, Mn: 0.32%, P: 0.21%, S: 0.0012%, Als: 0.38%, N: 0.0016%, Ti: 0.0013%, V: 0.0019%, Nb: 0.0018%, As: 0.0010%, Sn + Sb: 0.085 percent and the balance of iron and inevitable impurity elements.
The production method comprises the following steps:
a) smelting and continuous casting: smelting in a converter, carrying out RH vacuum refining treatment, and casting molten steel components into a plate blank with the thickness of 230mm according to the requirements;
b) the average temperature of the hot rolling plate blank is 1020 ℃, and the hot rolling plate blank enters a finishing mill group for rolling after being initially rolled to 40 mm. The initial rolling temperature of finish rolling is 980 ℃, the final rolling temperature is 880 ℃, the coiling temperature is 700 ℃, and the thickness of the hot rolled plate is 2.3 mm;
c) cold rolling to 0.50mm after acid cleaning; the temperature of the steel strip before cold rolling is 50 ℃;
d) the temperature of a continuous annealing rapid heating section after cold rolling is 1060 ℃, the temperature of a soaking section is 880 ℃, the temperature of the strip steel is kept for 18s in each furnace section at 700-880 ℃, the process speed is 140m/min, the continuous annealing is carried out, and the grade of the grain structure is 5.0.
Comparative example 4
C: 0.028%, Si: 1.56%, Mn: 0.30%, P: 0.009%, S: 0.0029%, Als: 0.27%, N: 0.0025% and the balance of iron and inevitable impurity elements. The average temperature of the hot-rolled plate blank is 1145 ℃, the hot-rolled plate blank enters a finishing mill group for rolling after being initially rolled to 40mm, the finishing rolling starting temperature is 1015 ℃, the finishing rolling temperature is 860 ℃, the coiling temperature is 690 ℃, and the thickness of the hot-rolled plate is 2.5 mm; cold rolling is directly carried out on the steel strip with the thickness of 0.5mm, the annealing temperature of the finished product is 1060 and 880 ℃, the hydrogen and nitrogen protection is carried out, the process speed is 135m/min, continuous annealing is carried out, and the grade of the grain structure is 4.5.
Claims (2)
1. The high-phosphorus high-magnetic induction non-oriented silicon steel and the production method are characterized in that the non-oriented silicon steel comprises the following chemical components:
c is less than or equal to 0.0030%, Si: 0.15% -1.50%, Als: 0.10-0.50%, Mn: 0.10% -0.50%, P: 0.080-0.25%, S is less than or equal to 0.0020%, N is less than or equal to 0.0020%, Ti is less than or equal to 0.0020%, V is less than or equal to 0.0020%, Nb is less than or equal to 0.0020%, Zr is less than or equal to 0.0020%, As is less than or equal to 0.0020%, Sn andor Sb: 0.03 to 0.12 percent of the total weight of the alloy, and the balance of Fe and inevitable residual elements.
2. The high-phosphorus high-magnetic-induction non-oriented silicon steel and the production method thereof as claimed in claim 1, wherein the production process route is as follows: the method comprises the following steps of molten iron desulphurization, converter smelting, RH refining, continuous casting, hot rolling, acid cleaning, cold rolling, continuous furnace annealing, coating, performance inspection and packaging, and specifically comprises the following steps:
1) smelting the molten steel to a target component, and then casting the molten steel into a blank in a continuous casting mode;
2) the slab temperature of a soaking section of a hot-rolled slab heating furnace is 1000-1150 ℃, the finishing temperature is controlled to be 800-950 ℃, the water mist laminar cooling is carried out, the coiling temperature is controlled to be 650-750 ℃, the hot-rolled coil is stacked and slowly cooled, and the cooling speed is controlled to be lower than 50 ℃/h;
3) after acid washing, cold rolling to the thickness of a finished product, wherein the temperature of a steel strip before cold rolling is not lower than 30 ℃;
4) the temperature of a rapid heating section of the continuous annealing furnace is 950-1150 ℃, the temperature of a soaking section is 750-920 ℃, and the protection is carried out in a full nitrogen dry atmosphere; setting the annealing process speed to be 120-150 m/min according to the furnace length and the main alloy components, meeting the grain size of 4-6 grades, carrying out gradient cooling, ensuring the soaking temperature of the strip steel to be between 700 ℃, controlling the cooling speed to be below 100 ℃/min within each furnace section for more than 15s and more than 600 ℃.
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| CN116240471A (en) * | 2023-02-21 | 2023-06-09 | 包头钢铁（集团）有限责任公司 | Sb-containing non-oriented silicon steel 50W600 and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105132808A (en) * | 2015-10-14 | 2015-12-09 | 安徽工业大学 | Method for preparing compound element processed non-oriented silicon steel for high-efficiency motor |
| 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 |
| CN111471927A (en) * | 2020-04-27 | 2020-07-31 | 马鞍山钢铁股份有限公司 | High-magnetic-induction non-oriented silicon steel for automobile generator and preparation method thereof |
| CN113755750A (en) * | 2021-08-19 | 2021-12-07 | 鞍钢股份有限公司 | Production method of phosphorus-containing high-magnetic-induction non-oriented silicon steel |
-
2022
- 2022-02-25 CN CN202210180924.9A patent/CN114703421A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105132808A (en) * | 2015-10-14 | 2015-12-09 | 安徽工业大学 | Method for preparing compound element processed non-oriented silicon steel for high-efficiency motor |
| 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 |
| CN111471927A (en) * | 2020-04-27 | 2020-07-31 | 马鞍山钢铁股份有限公司 | High-magnetic-induction non-oriented silicon steel for automobile generator and preparation method thereof |
| CN113755750A (en) * | 2021-08-19 | 2021-12-07 | 鞍钢股份有限公司 | Production method of phosphorus-containing high-magnetic-induction non-oriented silicon steel |
Non-Patent Citations (1)
| Title |
|---|
| 张正贵等: "《无取向硅钢的织构与磁性》" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116240471A (en) * | 2023-02-21 | 2023-06-09 | 包头钢铁（集团）有限责任公司 | Sb-containing non-oriented silicon steel 50W600 and preparation method thereof |
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