CN106591555A - Technology for annealing non-oriented cold rolled silicon lamination after cold rolling - Google Patents
Technology for annealing non-oriented cold rolled silicon lamination after cold rolling Download PDFInfo
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- CN106591555A CN106591555A CN201610941103.7A CN201610941103A CN106591555A CN 106591555 A CN106591555 A CN 106591555A CN 201610941103 A CN201610941103 A CN 201610941103A CN 106591555 A CN106591555 A CN 106591555A
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- 238000000137 annealing Methods 0.000 title claims abstract description 223
- 238000005097 cold rolling Methods 0.000 title claims abstract description 54
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title abstract description 10
- 229910052710 silicon Inorganic materials 0.000 title abstract description 10
- 239000010703 silicon Substances 0.000 title abstract description 10
- 238000003475 lamination Methods 0.000 title abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 63
- 238000000034 method Methods 0.000 claims abstract description 45
- 239000003513 alkali Substances 0.000 claims abstract description 21
- 239000012298 atmosphere Substances 0.000 claims abstract description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000001257 hydrogen Substances 0.000 claims abstract description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 16
- 239000012299 nitrogen atmosphere Substances 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 60
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 229910052757 nitrogen Inorganic materials 0.000 claims description 25
- 239000003921 oil Substances 0.000 claims description 25
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 5
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 5
- 239000011265 semifinished product Substances 0.000 claims description 5
- 239000000047 product Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000007669 thermal treatment Methods 0.000 abstract 2
- 229920001296 polysiloxane Polymers 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1266—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest between cold rolling steps
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
The invention discloses a technology for annealing a non-oriented cold rolled silicon lamination after cold rolling. The technology specifically comprises the following steps: S1, preheating an annealing furnace before annealing the silicone lamination; S2, annealing for the first time; S3, creating nitrogen atmosphere in the annealing furnace; S4, cooling after the first annealing; S5, performing cold rolling for the second time; S6, annealing for the second time; S7, creating hydrogen and nitrogen atmosphere in the furnace during the second annealing; S8, quickly increasing the temperature in the annealing furnace; S9, cooling the silicon lamination; S10, performing alkali washing on the cooled silicon lamination; and S11, drying the silicon lamination. According to the method, the silicon lamination is subjected to thermal treatment in a twice annealing treatment manner; meanwhile, the temperature and the atmosphere in the furnace are different during the twice annealing. Therefore, the thermal treatment effect of the silicon lamination can be greatly improved.
Description
Technical field
The present invention relates to stalloy technical field, the annealing process after specially a kind of non-directional cold-rolling silicon steel disc is cold rolling.
Background technology
Stalloy, English name is silicon lamination, and it is a kind of extremely low silicon-iron soft magnetic alloy of carbon containing,
General silicon content is 0.5～4.5%.Add silicon to improve the resistivity and maximum permeability of ferrum, reduce coercivity, core loss
（Iron loss）And magnetic aging.Annealing is a kind of metal heating processing technology, refers to for metal to be heated slowly to uniform temperature, is kept
Enough time, then with Reasonable Speed cooling.Purpose is to reduce hardness, improves machinability;Eliminate residual stress, stable chi
It is very little, reduce deformation and crackle tendency;Crystal grain thinning, adjustment tissue, eliminates tissue defects.Accurately say, annealing is a kind of to material
The Technology for Heating Processing of material, including metal material, nonmetallic materials.And the annealing purpose of new material is also deposited with conventional metals annealing
In the similarities and differences.Stalloy needs to be made annealing treatment in process, and the effect of annealing directly influences the property of stalloy
Energy.
The content of the invention
It is an object of the invention to provide the annealing process after a kind of non-directional cold-rolling silicon steel disc is cold rolling, this is orientation-free cold-rolled
Annealing process after stalloy is cold rolling is comprised the following steps that：
S1：Annealing furnace carried out the pre-heat treatment before the annealing for carrying out stalloy, and before stalloy is put into, the preheating of annealing furnace reaches
Temperature be 400-500 DEG C；
S2：Semi-finished product stalloy after will be cold rolling in stalloy manufacturing process carries out first time annealing, and stalloy is put into
Annealing furnace, the heating of annealing furnace is quickly heated to the temperature of annealing furnace between 600-650 DEG C, what annealing furnace was rapidly heated
Time control is within 30 seconds；
S3：The manufacture of the nitrogen atmosphere in annealing furnace, in annealing furnace nitrogen is added so that contain nitrogen in annealing furnace, is carried out
Annealing under nitrogen containing atmosphere, annealing time is 30-45 minutes；
S4：Cooling after once annealing is processed, and closes annealing furnace, the cooling water circulation system of annealing furnace is opened, to returning stove
Fast cooling, is carried out by the way of stalloy descent of temperature, when the temperature of stalloy is reduced to 50-100 DEG C, you can by silicon
Steel disc takes out, and completes an annealing process；
S5：Stalloy after once being made annealing treatment is carried out into secondary cold-rolling process, the stalloy after secondary cold-rolling carries out two
Secondary annealing；
S6：Stalloy after secondary cold-rolling carries out double annealing process, and the pre-heat treatment is carried out to annealing furnace before double annealing, preheating
Annealing furnace temperature control afterwards is between 600-650 DEG C；
S7：During double annealing in stove hydrogeneous blanket of nitrogen manufacture, during double annealing in stove only have hydrogen and nitrogen gas atmosphere, do not contain air.
S8：The quick rising of temperature, the temperature in annealing furnace is quickly raised between 800-850 DEG C in annealing furnace,
Double annealing process is carried out, annealing time was controlled between 25-30 minutes, until annealing is completed；
S9：The cooling of stalloy is processed, and the stalloy after double annealing is lowered the temperature, and silicon steel is carried out by the way of cooling oil
The fast cooling of piece, until the temperature of stalloy completes oil cooling cooling by being reduced between 30-50 DEG C；
S10：The alkali cleaning of stalloy after cooling, putting in alkali liquor for stalloy is cleaned, and the temperature control of alkali liquor is in 60-
Between 70 DEG C；
S11：The drying and processing of stalloy, process is dried to stalloy, and place is dried by the way of hot-air blower air blast
Reason.
It is 80% that nitrogen gas concn when making annealing treatment for the first time in step S3 in annealing furnace is content so that stalloy
The stabilizing annealing under this atmosphere is processed.
Nitrogen and hydrogen are all in annealing furnace in step S7 in second annealing, the gas of the hydrogen is accounted for
The gas volume fractions of nitrogen are 2-8%.
The cooling oil adopted in cooling oil cooling in step S9 is for specialty cooling oil of annealing.
Alkali liquor in step S10 is sodium hydroxide solution, and the concentration of the sodium hydroxide solution is 10-20%.
Compared with prior art, the invention has the beneficial effects as follows：The present invention is by the way of twice annealing process come to silicon
Steel disc carries out heat treatment, while the temperature and furnace atmosphere during twice annealing process is in different ways, such that it is able to big
The big thermal effectiveness for improving stalloy.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
Embodiment 1
A kind of annealing process after non-directional cold-rolling silicon steel disc is cold rolling, the annealing process tool after the non-directional cold-rolling silicon steel disc is cold rolling
Body step is as follows：
S1：Annealing furnace carried out the pre-heat treatment before the annealing for carrying out stalloy, and before stalloy is put into, the preheating of annealing furnace reaches
Temperature be 400 DEG C；
S2：Semi-finished product stalloy after will be cold rolling in stalloy manufacturing process carries out first time annealing, and stalloy is put into
The temperature of annealing furnace is quickly heated to 600 DEG C, the time control that annealing furnace is rapidly heated by annealing furnace, the heating of annealing furnace
Within 30 seconds；
S3：The manufacture of the nitrogen atmosphere in annealing furnace, in annealing furnace nitrogen is added so that contain nitrogen in annealing furnace, is carried out
Annealing under nitrogen containing atmosphere, annealing time is 30 minutes；
S4：Cooling after once annealing is processed, and closes annealing furnace, the cooling water circulation system of annealing furnace is opened, to returning stove
Fast cooling, is carried out by the way of stalloy descent of temperature, when the temperature of stalloy is reduced to 50 DEG C, you can by stalloy
Take out, complete an annealing process；
S5：Stalloy after once being made annealing treatment is carried out into secondary cold-rolling process, the stalloy after secondary cold-rolling carries out two
Secondary annealing；
S6：Stalloy after secondary cold-rolling carries out double annealing process, and the pre-heat treatment is carried out to annealing furnace before double annealing, preheating
Annealing furnace temperature control afterwards is at 600 DEG C；
S7：During double annealing in stove hydrogeneous blanket of nitrogen manufacture, during double annealing in stove only have hydrogen and nitrogen gas atmosphere, do not contain air；
S8：The quick rising of temperature, by the temperature in annealing furnace 800 DEG C are quickly raised in annealing furnace, carry out double annealing
Process, annealing time was controlled at 25 minutes, until annealing is completed；
S9：The cooling of stalloy is processed, and the stalloy after double annealing is lowered the temperature, and silicon steel is carried out by the way of cooling oil
The fast cooling of piece, until the temperature of stalloy completes oil cooling cooling by being reduced to 30 DEG C；
S10：The alkali cleaning of stalloy after cooling, putting in alkali liquor for stalloy is cleaned, and the temperature control of alkali liquor is 60
℃；
S11：The drying and processing of stalloy, process is dried to stalloy, and place is dried by the way of hot-air blower air blast
Reason.
It is 80% that nitrogen gas concn when making annealing treatment for the first time in step S3 in annealing furnace is content so that stalloy
The stabilizing annealing under this atmosphere is processed.
Nitrogen and hydrogen are all in annealing furnace in step S7 in second annealing, the gas of the hydrogen is accounted for
The gas volume fractions of nitrogen are 2%.
The cooling oil adopted in cooling oil cooling in step S9 is for specialty cooling oil of annealing.
Alkali liquor in step S10 is sodium hydroxide solution, and the concentration of the sodium hydroxide solution is 10%.
Embodiment 2
A kind of annealing process after non-directional cold-rolling silicon steel disc is cold rolling, the annealing process tool after the non-directional cold-rolling silicon steel disc is cold rolling
Body step is as follows：
S1：Annealing furnace carried out the pre-heat treatment before the annealing for carrying out stalloy, and before stalloy is put into, the preheating of annealing furnace reaches
Temperature be 450 DEG C；
S2：Semi-finished product stalloy after will be cold rolling in stalloy manufacturing process carries out first time annealing, and stalloy is put into
The temperature of annealing furnace is quickly heated to 620 DEG C, the time control that annealing furnace is rapidly heated by annealing furnace, the heating of annealing furnace
Within 30 seconds；
S3：The manufacture of the nitrogen atmosphere in annealing furnace, in annealing furnace nitrogen is added so that contain nitrogen in annealing furnace, is carried out
Annealing under nitrogen containing atmosphere, annealing time is 38 minutes；
S4：Cooling after once annealing is processed, and closes annealing furnace, the cooling water circulation system of annealing furnace is opened, to returning stove
Fast cooling, is carried out by the way of stalloy descent of temperature, when the temperature of stalloy is reduced to 75 DEG C, you can by stalloy
Take out, complete an annealing process；
S5：Stalloy after once being made annealing treatment is carried out into secondary cold-rolling process, the stalloy after secondary cold-rolling carries out two
Secondary annealing；
S6：Stalloy after secondary cold-rolling carries out double annealing process, and the pre-heat treatment is carried out to annealing furnace before double annealing, preheating
Annealing furnace temperature control afterwards is at 620 DEG C；
S7：During double annealing in stove hydrogeneous blanket of nitrogen manufacture, during double annealing in stove only have hydrogen and nitrogen gas atmosphere, do not contain air.
S8：The quick rising of temperature, by the temperature in annealing furnace 825 DEG C are quickly raised in annealing furnace, are carried out secondary
Annealing, annealing time was controlled at 28 minutes, until annealing is completed；
S9：The cooling of stalloy is processed, and the stalloy after double annealing is lowered the temperature, and silicon steel is carried out by the way of cooling oil
The fast cooling of piece, until the temperature of stalloy completes oil cooling cooling by being reduced to 40 DEG C；
S10：The alkali cleaning of stalloy after cooling, putting in alkali liquor for stalloy is cleaned, and the temperature control of alkali liquor is 65
℃；
S11：The drying and processing of stalloy, process is dried to stalloy, and place is dried by the way of hot-air blower air blast
Reason.
It is 80% that nitrogen gas concn when making annealing treatment for the first time in step S3 in annealing furnace is content so that stalloy
The stabilizing annealing under this atmosphere is processed.
Nitrogen and hydrogen are all in annealing furnace in step S7 in second annealing, the gas of the hydrogen is accounted for
The gas volume fractions of nitrogen are 6%.
The cooling oil adopted in cooling oil cooling in step S9 is for specialty cooling oil of annealing.
Alkali liquor in step S10 is sodium hydroxide solution, and the concentration of the sodium hydroxide solution is 15%.
Embodiment 3
A kind of annealing process after non-directional cold-rolling silicon steel disc is cold rolling, the annealing process tool after the non-directional cold-rolling silicon steel disc is cold rolling
Body step is as follows：
S1：Annealing furnace carried out the pre-heat treatment before the annealing for carrying out stalloy, and before stalloy is put into, the preheating of annealing furnace reaches
Temperature be 500 DEG C；
S2：Semi-finished product stalloy after will be cold rolling in stalloy manufacturing process carries out first time annealing, and stalloy is put into
The temperature of annealing furnace is quickly heated to 650 DEG C, the time control that annealing furnace is rapidly heated by annealing furnace, the heating of annealing furnace
Within 30 seconds；
S3：The manufacture of the nitrogen atmosphere in annealing furnace, in annealing furnace nitrogen is added so that contain nitrogen in annealing furnace, is carried out
Annealing under nitrogen containing atmosphere, annealing time is 45 minutes；
S4：Cooling after once annealing is processed, and closes annealing furnace, the cooling water circulation system of annealing furnace is opened, to returning stove
Fast cooling, is carried out by the way of stalloy descent of temperature, when the temperature of stalloy is reduced to 100 DEG C, you can by silicon steel
Piece takes out, and completes an annealing process；
S5：Stalloy after once being made annealing treatment is carried out into secondary cold-rolling process, the stalloy after secondary cold-rolling carries out two
Secondary annealing；
S6：Stalloy after secondary cold-rolling carries out double annealing process, and the pre-heat treatment is carried out to annealing furnace before double annealing, preheating
Annealing furnace temperature control afterwards is at 650 DEG C；
S7：During double annealing in stove hydrogeneous blanket of nitrogen manufacture, during double annealing in stove only have hydrogen and nitrogen gas atmosphere, do not contain air；
S8：The quick rising of temperature, by the temperature in annealing furnace 850 DEG C are quickly raised in annealing furnace, carry out double annealing
Process, annealing time was controlled at 30 minutes, until annealing is completed；
S9：The cooling of stalloy is processed, and the stalloy after double annealing is lowered the temperature, and silicon steel is carried out by the way of cooling oil
The fast cooling of piece, until the temperature of stalloy completes oil cooling cooling by being reduced to 50 DEG C；
S10：The alkali cleaning of stalloy after cooling, putting in alkali liquor for stalloy is cleaned, and the temperature control of alkali liquor is 70
℃；
S11：The drying and processing of stalloy, process is dried to stalloy, and place is dried by the way of hot-air blower air blast
Reason.
It is 80% that nitrogen gas concn when making annealing treatment for the first time in step S3 in annealing furnace is content so that stalloy
The stabilizing annealing under this atmosphere is processed.
Nitrogen and hydrogen are all in annealing furnace in step S7 in second annealing, the gas of the hydrogen is accounted for
The gas volume fractions of nitrogen are 8%.
The cooling oil adopted in cooling oil cooling in step S9 is for specialty cooling oil of annealing.
Alkali liquor in step S10 is sodium hydroxide solution, and the concentration of the sodium hydroxide solution is 20%.
The present invention carries out heat treatment by the way of twice annealing process to stalloy, while during twice annealing process
Temperature and furnace atmosphere in different ways, such that it is able to greatly improve the thermal effectiveness of stalloy.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (5)
1. the annealing process after a kind of non-directional cold-rolling silicon steel disc is cold rolling, it is characterised in that：The non-directional cold-rolling silicon steel disc is cold rolling
Annealing process afterwards is comprised the following steps that：
S1：Annealing furnace carried out the pre-heat treatment before the annealing for carrying out stalloy, and before stalloy is put into, the preheating of annealing furnace reaches
Temperature be 400-500 DEG C；
S2：Semi-finished product stalloy after will be cold rolling in stalloy manufacturing process carries out first time annealing, and stalloy is put into
Annealing furnace, the heating of annealing furnace is quickly heated to the temperature of annealing furnace between 600-650 DEG C, what annealing furnace was rapidly heated
Time control is within 30 seconds；
S3：The manufacture of the nitrogen atmosphere in annealing furnace, in annealing furnace nitrogen is added so that contain nitrogen in annealing furnace, is carried out
Annealing under nitrogen containing atmosphere, annealing time is 30-45 minutes；
S4：Cooling after once annealing is processed, and closes annealing furnace, the cooling water circulation system of annealing furnace is opened, to returning stove
Fast cooling, is carried out by the way of stalloy descent of temperature, when the temperature of stalloy is reduced to 50-100 DEG C, you can by silicon
Steel disc takes out, and completes an annealing process；
S5：Stalloy after once being made annealing treatment is carried out into secondary cold-rolling process, the stalloy after secondary cold-rolling carries out two
Secondary annealing；
S6：Stalloy after secondary cold-rolling carries out double annealing process, and the pre-heat treatment is carried out to annealing furnace before double annealing, preheating
Annealing furnace temperature control afterwards is between 600-650 DEG C；
S7：During double annealing in stove hydrogeneous blanket of nitrogen manufacture, during double annealing in stove only have hydrogen and nitrogen gas atmosphere, do not contain air；
S8：The quick rising of temperature, the temperature in annealing furnace is quickly raised between 800-850 DEG C in annealing furnace, is carried out
Double annealing is processed, and annealing time was controlled between 25-30 minutes, until annealing is completed；
S9：The cooling of stalloy is processed, and the stalloy after double annealing is lowered the temperature, and silicon steel is carried out by the way of cooling oil
The fast cooling of piece, until the temperature of stalloy completes oil cooling cooling by being reduced between 30-50 DEG C；
S10：The alkali cleaning of stalloy after cooling, putting in alkali liquor for stalloy is cleaned, and the temperature control of alkali liquor is in 60-
Between 70 DEG C；
S11：The drying and processing of stalloy, process is dried to stalloy, and place is dried by the way of hot-air blower air blast
Reason.
2. the annealing process after a kind of non-directional cold-rolling silicon steel disc according to claim 1 is cold rolling, it is characterised in that：It is described
It is 80% that nitrogen gas concn when making annealing treatment for the first time in step S3 in annealing furnace is content so that stalloy is steady under this atmosphere
Fixed annealing.
3. the annealing process after a kind of non-directional cold-rolling silicon steel disc according to claim 1 is cold rolling, it is characterised in that：It is described
Nitrogen and hydrogen are all in annealing furnace in step S7 in second annealing, the gas of the hydrogen accounts for the gas body of nitrogen
Product ratio is 2-8%.
4. the annealing process after a kind of non-directional cold-rolling silicon steel disc according to claim 1 is cold rolling, it is characterised in that：It is described
The cooling oil adopted in cooling oil cooling in step S9 is for specialty cooling oil of annealing.
5. the annealing process after a kind of non-directional cold-rolling silicon steel disc according to claim 1 is cold rolling, it is characterised in that：It is described
Alkali liquor in step S10 is sodium hydroxide solution, and the concentration of the sodium hydroxide solution is 10-20%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107385178A (en) * | 2017-07-18 | 2017-11-24 | 浙江华赢特钢科技有限公司 | A kind of annealing process of improved non-directional cold-rolling silicon steel disc |
| CN110293375A (en) * | 2019-07-02 | 2019-10-01 | 浙江百润轴承有限公司 | A kind of production technology of thin-wall bearing |
| CN111020150A (en) * | 2019-08-14 | 2020-04-17 | 钢铁研究总院 | Method for preparing ultrathin silicon steel by low-temperature step-by-step annealing |
| CN111118273A (en) * | 2019-12-21 | 2020-05-08 | 包头市威丰稀土电磁材料股份有限公司 | Production process of oriented silicon steel thin strip |
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| CA2154407A1 (en) * | 1994-07-22 | 1996-01-23 | Michiro Komatsubara | Method of manufacturing grain-oriented silicon steel sheet exhibiting excellent magnetic characteristics over the entire length of coil thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107385178A (en) * | 2017-07-18 | 2017-11-24 | 浙江华赢特钢科技有限公司 | A kind of annealing process of improved non-directional cold-rolling silicon steel disc |
| CN110293375A (en) * | 2019-07-02 | 2019-10-01 | 浙江百润轴承有限公司 | A kind of production technology of thin-wall bearing |
| CN111020150A (en) * | 2019-08-14 | 2020-04-17 | 钢铁研究总院 | Method for preparing ultrathin silicon steel by low-temperature step-by-step annealing |
| CN111020150B (en) * | 2019-08-14 | 2021-03-09 | 钢铁研究总院 | Method for preparing ultrathin silicon steel by low-temperature step-by-step annealing |
| CN111118273A (en) * | 2019-12-21 | 2020-05-08 | 包头市威丰稀土电磁材料股份有限公司 | Production process of oriented silicon steel thin strip |
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