CN108425003A - A kind of household electrical appliances non-orientation silicon steel board fabrication method - Google Patents
A kind of household electrical appliances non-orientation silicon steel board fabrication method Download PDFInfo
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- 229910000976 Electrical steel Inorganic materials 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 229910052742 iron Inorganic materials 0.000 claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000000470 constituent Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 229910052718 tin Inorganic materials 0.000 claims abstract description 6
- 238000000137 annealing Methods 0.000 claims description 17
- 238000005098 hot rolling Methods 0.000 claims description 16
- 238000005097 cold rolling Methods 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 14
- 238000005121 nitriding Methods 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000001953 recrystallisation Methods 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 238000002791 soaking Methods 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000004381 surface treatment Methods 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 239000012159 carrier gas Substances 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 238000013532 laser treatment Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 5
- 239000013078 crystal Substances 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- 230000006698 induction Effects 0.000 abstract description 4
- 238000005542 laser surface treatment Methods 0.000 abstract description 4
- 238000011282 treatment Methods 0.000 abstract description 4
- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005183 environmental health Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- 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
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1222—Hot rolling
-
- 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
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1233—Cold rolling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The present invention relates to a kind of household electrical appliances non-orientation silicon steel board fabrication method, the steel ingot constituent of the manufacturing method includes：C：0.018%, Si：2.10%, Mn：0.4%, Sn：0.06%, Als：0.35%, Ti：0.001%；O<20ppm, S<20ppm, N<15ppm, surplus is by Fe and inevitable impurity.By the finished products of Nitrizing Treatment+Laser Surface Treatment+particular atmosphere and the type of cooling under particular atmosphere, the heat treatment process of non-orientation silicon steel is improved.This method can improve the magnetic induction intensity of silicon steel product, reduce iron loss, improve silicon steel crystal texture, at low cost, disclosure satisfy that using required performance.
Description
Technical field
The present invention relates to metal processing sectors, are a kind of household electrical appliances non-orientation silicon steel board fabrication methods specifically.
Background technology
As China's economic enters " the new normality " that high speed increases, China in Recent Years household electrical appliances industry by previous rapid growth
Sales volume of the product slowdown in growth.But consumption appliance upgrading situation still keeps good, product structure Continuous optimization, Environmental Health
Class product rapid growth, flat domestic and international economic situation is faced, bright spot protrudes, if overall efficiency continues to be promoted steadily, household electrical appliances
Enterprise actively takes every counter-measure, and enterprise's Continuous Innovation, industry in-depth structural adjustment, manufacturing industry further upgrades and canal
Several spotlights such as road change.The non-oriented electrical steel of China's white goods industry low trade mark in, mostly 50W1300,
50W800 series and 50W600 series, for efficient machine using 50W600,50W400 series, the above trade mark is mainstream.
The main means for improving property of non-oriented electric steel are microcosmic including being mingled in addition alloying element, reduction steel, improving
Structure, inclusion modification and optimization heat treatment process etc..Currently, how to produce superior and inexpensive product, it is
The key points and difficulties of each iron company's research and development
Invention content
In order to solve the above technical problem, the present invention provides a kind of household electrical appliances non-orientation silicon steel board fabrication method, the party
Method can improve the magnetic induction intensity of silicon steel product, reduce iron loss, improve silicon steel crystal texture, at low cost, disclosure satisfy that application
Required performance.
A kind of household electrical appliances non-orientation silicon steel board fabrication method, includes the following steps：
1) steel plate after cold rolling is put into heat-treatment furnace, vacuumizes and reaches 30~50Pa, 450~500V of high-voltage electricity, temperature
Degree is 770~850 DEG C, and 10 are pressed using nitrogen and hydrogen:1 ratio is as nitriding gas, using high purity argon as carrier gas
Body, nitriding gas account for the 1.5% of total gas flow, and nitriding soaking time is 15~20 minutes, and carries out secondary recrystallization.
2) laser treatment：In an inert atmosphere by the steel plate after recrystallization, it is surface-treated, is swashed using laser
Luminous power is 5~10kW, 2~3mm of spot width, 6~10mm/s of sweep speed.
3) finished products：By the steel plate after surface treatment in 75%H2And 25%N2Under atmosphere, with the heating rate of 50 DEG C/h
1150~1250 DEG C are heated to, then in 100% high-purity H2Lower heat preservation 20~24 hours is then fast under 0 DEG C~-30 DEG C environment
Quickly cooling but, obtains non-orientation silicon steel finished product.
The steel ingot constituent of the manufacturing method includes：C：0.015%~0.035%, Si：1.25%~2.50%,
Mn：0.2%~0.5%, Sn：0.01%~0.20%, Als：0.15%~0.65%, Ti<0.005%；O<20ppm, S<
20ppm, N<15ppm, surplus is by Fe and inevitable impurity.
The manufacturing method further includes step a) hot rollings before step 1) intermediate annealing：By Heating Steel Ingots to 1000~
1200 DEG C of progress hot rollings, the steel plate thickness after hot rolling are 2.5~3.5mm, and hot rolling coiling temperature is 550 DEG C or more, is then heated
It anneals to 650~850 DEG C, annealing soaking time is 10~60 seconds.
Further include step b) cold rollings：Steel plate after hot-roll annealing is subjected to cold rolling, cold rolling reduction ratio is 80~85%, is made
The cold-reduced sheet of 0.35~0.65mm.
The crystallite dimension of the non-orientation silicon steel finished product is controlled at 100~150 μm or so.
The magnetic strength B of the non-orientation silicon steel finished product2500=1.60~1.62T, iron loss P17/50=2.20~2.40W/kg.
Compared with prior art, it is an advantage of the invention that：By Nitrizing Treatment+Laser Surface Treatment under particular atmosphere+
The finished products of particular atmosphere and the type of cooling improve the heat treatment process of non-orientation silicon steel, most suitable for silicon steel mating chemical composition
When processing step and parameter area so that final non-orientation silicon steel finished product, not only magnetic property is excellent, and process costs are controllable,
And performance is fully able to meet the electrical sheet commodity application demand of household electric appliances.
Specific implementation mode
Currently, household electronic products use non-oriented electrical steel, the main trade mark to have：50W600、50W800、50W1300
With middle high grade non-oriented electrical steel, such as 50W400,50W470,50W350 (or 0.35mm)；For another example fixed frequency air conditioner and refrigerator pressure
Most of motors such as contracting machine select the non-oriented electrical steel of 0.5mm specifications, commonly used with converter technique, 0.35~
The non-oriented electrical steel strip dosage of 0.30mm thickness has to be increased by a relatively large margin.
In the recrystallization stage, preferable grain orientation texture occurs, forms { 111 } Surface Texture at crystal grain border, it is unfavorable
It is formed in magnetism；As annealing time increases, crystallite dimension is grown up in transhipment, and a part of { 111 } Surface Texture is to more having
{ 110 } plane texture conversion of profit, and the strong structure in { 100 } face shows the trend of reduction under continuous high temperature effect, makes crystal grain not
It is disconnected to become larger, there is inhibition as crystal grain become greater to surface and forms crystal boundary groove and grow up to crystal grain, then extend annealing time, it is also difficult
To influence the variation of crystallite dimension.
Annealing temperature has an impact crystallite dimension, and distribution and the formation of texture also have large effect, with non-orientation silicon steel
For, best texture is { 100 } [uvw], in it anneals production process, it is ensured that wanted with the face of rolling { 110 } and { 100 } of crystal grain
It is parallel, ensure that { 100 } easy magnetization factor increases, i.e., under the premise of parallel with the face of rolling, { 110 }, { 100 } substitution as much as possible
{ 112 }, { 111 } texture reaches the target for improving magnetic property.In technical scheme of the present invention, match by according to silicon steel ingredient
It closes and selects specific heat treatment process step and parameter, be conducive to the raising magnetic induction intensity of final non-orientation silicon steel product.And
And why the present invention takes the finished product of Nitrizing Treatment+Laser Surface Treatment+particular atmosphere and the type of cooling under particular atmosphere
The heat treatment mode of annealing reduces silicon steel iron loss, improves magnetic induction intensity exactly in order to improve silicon steel microstructure.
This patent is further described with reference to embodiment and comparative example.
Embodiment 1：
A kind of household electrical appliances non-orientation silicon steel board fabrication method, includes the following steps：
1) steel plate after cold rolling is put into heat-treatment furnace, vacuumizes and reaches 30Pa, high-voltage electricity 450VV, temperature 770
DEG C, press 10 using nitrogen and hydrogen:1 ratio is as nitriding gas, and using high purity argon as carrier gas, nitriding gas accounts for
The 1.5% of total gas flow, nitriding soaking time is 15 minutes, and carries out secondary recrystallization.
2) laser treatment：In an inert atmosphere by the steel plate after recrystallization, it is surface-treated, is swashed using laser
Luminous power is 5kW, spot width 2mm, sweep speed 6mm/s.
3) finished products：By the steel plate after surface treatment in 75%H2And 25%N2Under atmosphere, with the heating rate of 50 DEG C/h
1150 DEG C are heated to, then in 100% high-purity H2Lower heat preservation 24 hours, is then quickly cooled down under 0 DEG C of environment, obtains No yield point
Silicon steel finished product.
The steel ingot constituent of the manufacturing method includes：C：0.035%, Si：2.50%, Mn：0.2%, Sn：
0.20%, Als：0.65%, Ti：0.003%；O<20ppm, S<20ppm, N<15ppm, surplus is by Fe and inevitable impurity.
The crystallite dimension of the non-orientation silicon steel finished product is controlled at 100 μm or so.
The magnetic strength B of the non-orientation silicon steel finished product2500=1.60T, iron loss P17/50=2.20W/kg.
Embodiment 2：
A kind of household electrical appliances non-orientation silicon steel board fabrication method, includes the following steps：
1) steel plate after cold rolling being put into heat-treatment furnace, vacuumizes and reaches 50Pa, high-voltage electricity 500V, temperature is 850 DEG C,
10 are pressed using nitrogen and hydrogen:1 ratio is as nitriding gas, and using high purity argon as carrier gas, nitriding gas accounts for always
The 1.5% of gas flow, nitriding soaking time is 20 minutes, and carries out secondary recrystallization.
2) laser treatment：In an inert atmosphere by the steel plate after recrystallization, it is surface-treated, is swashed using laser
Luminous power is 10kW, spot width 3mm, sweep speed 10mm/s.
3) finished products：By the steel plate after surface treatment in 75%H2And 25%N2Under atmosphere, with the heating rate of 50 DEG C/h
1250 DEG C are heated to, then in 100% high-purity H2Lower heat preservation 20 hours, is then quickly cooled down under -10 DEG C of environment, obtains nothing and takes
To silicon steel finished product.
The steel ingot constituent of the manufacturing method includes：C：0.035%, Si：2.50%, Mn：0.5%, Sn：
0.20%, Als：0.45%, Ti：0.002%；O<20ppm, S<20ppm, N<15ppm, surplus is by Fe and inevitable impurity.
The manufacturing method further includes step a) hot rollings before step 1) intermediate annealing：By Heating Steel Ingots to 1200 DEG C
Hot rolling is carried out, the steel plate thickness after hot rolling is 2.5mm, and hot rolling coiling temperature is 550 DEG C, is then heated to 850 DEG C and anneals,
Soaking time of annealing is 10 seconds.
The crystallite dimension of the non-orientation silicon steel finished product is controlled at 150 μm or so.
The magnetic strength B of the non-orientation silicon steel finished product2500=1.62T, iron loss P17/50=2.20W/kg.
Embodiment 3：
A kind of household electrical appliances non-orientation silicon steel board fabrication method, includes the following steps：
1) steel plate after cold rolling being put into heat-treatment furnace, vacuumizes and reaches 40Pa, high-voltage electricity 480V, temperature is 820 DEG C,
10 are pressed using nitrogen and hydrogen:1 ratio is as nitriding gas, and using high purity argon as carrier gas, nitriding gas accounts for always
The 1.5% of gas flow, nitriding soaking time is 16 minutes, and carries out secondary recrystallization.
2) laser treatment：In an inert atmosphere by the steel plate after recrystallization, it is surface-treated, is swashed using laser
Luminous power is 8kW, spot width 2mm, sweep speed 8mm/s.
3) finished products：By the steel plate after surface treatment in 75%H2And 25%N2Under atmosphere, with the heating rate of 50 DEG C/h
1250 DEG C are heated to, then in 100% high-purity H2Lower heat preservation 22 hours, is then quickly cooled down under -15 DEG C of environment, obtains nothing and takes
To silicon steel finished product.
The steel ingot constituent of the manufacturing method includes：C：0.018%, Si：2.10%, Mn：0.4%, Sn：
0.06%, Als：0.35%, Ti：0.001%；O<20ppm, S<20ppm, N<15ppm, surplus is by Fe and inevitable impurity.
The manufacturing method further includes step a) hot rollings before step 1) intermediate annealing：By Heating Steel Ingots to 1100 DEG C
Hot rolling is carried out, the steel plate thickness after hot rolling is 3.5mm, and hot rolling coiling temperature is 560 DEG C, is then heated to 750 DEG C and anneals,
Soaking time of annealing is 30 seconds.
Further include step b) cold rollings：Steel plate after hot-roll annealing is subjected to cold rolling, cold rolling reduction ratio is 83%, is made
The cold-reduced sheet of 0.55mm.
The crystallite dimension of the non-orientation silicon steel finished product is controlled at 120 μm or so.
The magnetic strength B of the non-orientation silicon steel finished product2500=1.60T, iron loss P17/50=2.20W/kg.
Comparative example 1：
In the manufacturing method of the present invention, when changing the selection of silicon steel steel ingot element, the step of heat treatment process and parameter
Range remains unchanged, then will influence the magnetic property of final products, cause iron loss increase or magnetic flux reduce.
Comparative example 2：
When the parameter of annealing process and process of surface treatment changes, silicon steel microstructure change, crystal grain will be caused
Size and texture structure are undesirable, increase magnetic hystersis loss, and comprehensive magnetic can reduce, and service life declines.
It can be seen from embodiment 1-3 and comparative example 1 and 2 the experimental results showed that：Pass through the Nitrizing Treatment under particular atmosphere
The finished products of+Laser Surface Treatment+particular atmosphere and the type of cooling, improve the heat treatment process of non-orientation silicon steel, for silicon
Composition of steel matches optimal processing step and parameter area so that and final non-orientation silicon steel finished product, not only magnetic property is excellent,
Process costs are controllable, and performance is fully able to meet the electrical sheet commodity application demand of household electric appliances.
While there has been shown and described that the embodiment of this patent, it will be understood by those skilled in the art that：Not
In the case of being detached from the principle and objective of this patent a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The range of patent is limited by claim and its equivalent.
Claims (5)
1. a kind of household electrical appliances non-orientation silicon steel board fabrication method, which is characterized in that the manufacturing method includes the following steps：
1) steel plate after cold rolling is put into heat-treatment furnace, vacuumizes and reaches 30~50Pa, 450~500V of high-voltage electricity, temperature is
770~850 DEG C, 10 are pressed using nitrogen and hydrogen:1 ratio is oozed as nitriding gas using high purity argon as carrier gas
Nitrogen accounts for the 1.5% of total gas flow, and nitriding soaking time is 15~20 minutes, and carries out secondary recrystallization；
2) laser treatment：In an inert atmosphere by the steel plate after recrystallization, it is surface-treated using laser, laser work(
Rate is 5~10kW, 2~3mm of spot width, 6~10mm/s of sweep speed；
3) finished products：By the steel plate after surface treatment in 75%H2And 25%N2Under atmosphere, heated with the heating rate of 50 DEG C/h
To 1150~1250 DEG C, then in 100% high-purity H2Lower heat preservation 20~24 hours, the then fast quickly cooling under 0 DEG C~-30 DEG C environment
But, non-orientation silicon steel finished product is obtained；
The steel ingot constituent of the manufacturing method includes：C：0.015%~0.035%, Si：1.25%~2.50%, Mn：
0.2%~0.5%, Sn：0.01%~0.20%, Als：0.15%~0.65%, Ti<0.005%；O<20ppm, S<20ppm,
N<15ppm, surplus is by Fe and inevitable impurity.
2. manufacturing method as described in claim 1, it is characterised in that：The manufacturing method before step 1) intermediate annealing,
Further include step a) hot rollings：By Heating Steel Ingots to 1000~1200 DEG C of progress hot rollings, steel plate thickness after hot rolling is 2.5~
3.5mm, hot rolling coiling temperature be 550 DEG C or more, be then heated to 650~850 DEG C and anneal, annealing soaking time be 10~
60 seconds.
3. method as claimed in claim 1 or 2, it is characterised in that：The manufacturing method is also wrapped before step 1) intermediate annealing
Include step b) cold rollings：Steel plate after hot-roll annealing is subjected to cold rolling, cold rolling reduction ratio is 80~85%, and 0.35~0.65mm is made
Cold-reduced sheet.
4. method as claimed in claim 1 or 2, it is characterised in that：The crystallite dimension of the non-orientation silicon steel finished product is controlled 100
~150 μm or so.
5. the manufacturing method as described in one of Claims 1-4, it is characterised in that：The magnetic strength B of the non-orientation silicon steel finished product2500
=1.60~1.62T, iron loss P17/50=2.20~2.40W/kg.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113015820A (en) * | 2018-11-14 | 2021-06-22 | 王静然 | Processing method of soft magnetic metal material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN103429767A (en) * | 2011-02-14 | 2013-12-04 | 蒂森克虏伯电工钢有限公司 | Method for producing a grain-oriented flat steel product |
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| US12071695B2 (en) | 2018-11-14 | 2024-08-27 | Jingran WANG | Method for increasing magnetic induction intensity of soft magnetic metallic materials |
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