WO2017022360A1 - 磁気特性に優れる無方向性電磁鋼板の製造方法 - Google Patents
磁気特性に優れる無方向性電磁鋼板の製造方法 Download PDFInfo
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- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
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Definitions
- the present invention relates to a method for producing a non-oriented electrical steel sheet, and specifically to a method for producing a non-oriented electrical steel sheet having excellent magnetic properties.
- Non-oriented electrical steel sheet is a kind of soft magnetic material that is widely used as a core material for rotating machines.
- a core material for rotating machines In recent years, in the trend of energy saving, there has been an increasing demand for improving the efficiency of electric devices, reducing the size and weight, and improving the magnetic properties of iron core materials has become increasingly important.
- Non-oriented electrical steel sheets are usually manufactured by hot-rolling a steel material (slab) containing silicon, hot-rolled sheet annealing, cold-rolling, and finish annealing as necessary.
- a steel material slab
- hot-rolled sheet annealing cold-rolling
- finish annealing finish annealing
- Patent Document 1 As a technique for omitting hot-rolled sheet annealing, for example, in Patent Document 1, the amount of S is reduced to 0.0015 mass% or less to improve crystal grain growth, and Sb and Sn are added to suppress nitridation of the surface layer. Furthermore, a technique for improving the magnetic properties by increasing the crystal grain size of the hot-rolled plate that affects the magnetic flux density by winding at high temperature during hot rolling is disclosed. Further, Patent Document 2 discloses that iron loss can be achieved without performing hot-rolled sheet annealing by controlling alloy constituent elements, optimizing hot rolling conditions, and controlling the hot-rolled structure using the phase transformation of steel. The technology regarding the manufacturing method of the non-oriented electrical steel sheet which made low and improved the magnetic flux density is disclosed.
- Patent Document 1 needs to reduce the amount of S to a very small amount, the manufacturing cost (desulfurization cost) increases.
- the technique of patent document 2 there are many restrictions on a steel component and hot rolling conditions, and there exists a problem that it is difficult to manufacture actually.
- the present invention has been made in view of the above-mentioned problems of the prior art, and the object thereof is an inexpensive method for producing a non-oriented electrical steel sheet having excellent magnetic properties even if hot-rolled sheet annealing is omitted. Is to propose.
- the inventors have made extensive studies focusing on the influence of impurities inevitably contained in the steel material on the magnetic properties in order to solve the above problems. As a result, magnetic flux density and iron loss are greatly reduced even when hot-rolled sheet annealing is omitted by reducing Ga to an infinitesimal amount, especially by reducing Al to an extremely small amount. The present inventors have found that it can be improved and have developed the present invention.
- the present invention is C: 0.01 mass% or less, Si: 6 mass% or less, Mn: 0.05 to 3 mass%, P: 0.2 mass% or less, Al: 2 mass% or less, N: 0.005 mass% or less , S: 0.01 mass% or less, Ga: 0.0005 mass% or less, the slab having a component composition consisting of Fe and inevitable impurities as the remainder is hot-rolled without subjecting to hot-rolled sheet annealing, or , Non-direction consisting of a series of steps in which hot-rolled sheet annealing or self-annealing is performed, pickling, cold rolling twice or more with intermediate or intermediate annealing, finish annealing, and forming an insulating film
- a method for producing a non-oriented electrical steel sheet characterized in that an average rate of temperature increase between 500 and 800 ° C. in the heating process of the finish annealing is 50 ° C./s or more. That.
- the method for producing a non-oriented electrical steel sheet according to the present invention is characterized in that the Al content in the component composition of the slab is 0.005 mass% or less.
- the slab used in the method for producing a non-oriented electrical steel sheet of the present invention is selected from Sn: 0.01 to 0.2 mass% and Sb: 0.01 to 0.2 mass% in addition to the above component composition. It is characterized by containing 1 type or 2 types.
- the slab used in the method for producing a non-oriented electrical steel sheet according to the present invention may further include Ca: 0.0005 to 0.03 mass%, REM: 0.0005 to 0.03 mass%, and Mg in addition to the above component composition. : One or more selected from 0.0005 to 0.03 mass%.
- non-oriented electrical steel sheet of the present invention may further include Ni: 0.01 to 2.0 mass%, Co: 0.01 to 2.0 mass%, Cu: 0.03 to 5 in addition to the above component composition. It is characterized by containing one or more selected from 0.0 mass% and Cr: 0.05 to 5.0 mass%.
- a non-oriented electrical steel sheet having excellent magnetic properties can be produced even if hot-rolled sheet annealing is omitted. Therefore, the non-oriented electrical steel sheet having excellent magnetic properties can be provided at a low cost and with a short delivery time. Is possible.
- Ga content is a graph showing the effect on the magnetic flux density B 50.
- Al content is a graph showing the effect on the magnetic flux density B 50.
- the average heating rate in the secondary recrystallization annealing is a graph showing the effect on the magnetic flux density B 50.
- the steel added with various changes in the range of up to 0.002 mass% is melted in the laboratory, cast into a steel ingot, hot rolled into a hot rolled sheet having a thickness of 3.0 mm, and then wound. A heat treatment corresponding to a temperature of 750 ° C. was performed. Next, the hot-rolled sheet was pickled without being subjected to hot-rolled sheet annealing, cold-rolled to obtain a cold-rolled sheet having a thickness of 0.50 mm, and then 1000% in an atmosphere of 20 vol% H 2 -80 vol% N 2. Finish annealing was performed at a temperature of 10 ° C. for 10 seconds. The average rate of temperature increase between 500 and 800 ° C. in the finish annealing was 70 ° C./s.
- the magnetic flux density B 50 of the steel sheet after finish annealing obtained as described above was measured with a 25 cm Epstein apparatus, and the result is shown in FIG. From this result, the content of Ga is less than or equal to 0.0005 mass%, the magnetic flux density B 50 is rapidly increased, and the magnetic flux density improving effect of the Ga reduction, than 0.2 mass% content of Al It was found that 0.002 mass% was larger.
- the Ga content is set to 0.0005 mass%. It was found that the magnetic flux density can be remarkably improved by reducing to the following.
- the reason why the magnetic flux density is greatly improved by reducing the content of Ga and Al is not yet fully understood at the present time.
- the recrystallization temperature of the material decreases, so It is presumed that the recrystallization behavior during rolling changed and the texture of the hot-rolled sheet was improved.
- the reason why the magnetic flux density is greatly improved when Al is 0.005 mass% or less is that the mobility of grain boundaries is changed by reducing Ga and Al, and the growth of crystal orientation advantageous for magnetic properties is promoted. I believe that.
- the above measurement results showing the relationship between the average rate of temperature increase and the magnetic flux density B 50 in the finish annealing.
- the steel plate with Ga of 0.001 mass% has a substantially constant magnetic flux density B 50 regardless of the heating rate, but the steel plate with Ga reduced to 0.0001 mass% has a heating rate of 50 ° C. It can be seen that the magnetic flux density B 50 is improved at / s or more. From the results of the above experiments, by setting the Ga content to 0.0005 mass% or less and the Al content to 0.005 mass% or less, the average temperature increase rate in the finish annealing is set to 50 ° C./s or more. It was found that the magnetic flux density can be further improved.
- C 0.01 mass% or less
- C is limited to 0.01 mass% or less in order to cause magnetic aging in the product plate.
- it is 0.005 mass% or less, More preferably, it is 0.003 mass% or less.
- Si 6 mass% or less Since Si is an element that increases the specific resistance of steel and is effective in reducing iron loss, it is preferably contained in an amount of 1 mass% or more. However, if added over 6 mass%, it becomes extremely brittle and cold rolling becomes difficult, so the upper limit is made 6 mass%.
- the range is preferably 1 to 4 mass%, more preferably 1.5 to 3 mass%.
- Mn 0.05-3 mass% Since Mn is an element effective for preventing red hot brittleness during hot rolling, it is necessary to contain 0.05 mass% or more. However, if it exceeds 3 mass%, the cold rolling property is lowered or the magnetic flux density is lowered. Therefore, the upper limit is 3 mass%. The range is preferably 0.05 to 1.5 mass%, more preferably 0.2 to 1.3 mass%.
- P 0.2 mass% or less Since P is excellent in solid solution strengthening ability, it can be added because it is an element effective for adjusting hardness and improving punchability. However, since the embrittlement becomes remarkable when it exceeds 0.2 mass%, the upper limit is set to 0.2 mass%. Preferably it is 0.15 mass% or less, More preferably, it is 0.1 mass% or less.
- S 0.01 mass% or less Since S is a harmful element that generates sulfides such as MnS and increases iron loss, the upper limit is limited to 0.01 mass%. Preferably it is 0.005 mass% or less, More preferably, it is 0.003 mass% or less.
- Al 2 mass% or less Al can be added because it is an effective element for increasing the specific resistance of steel and reducing eddy current loss. However, if it exceeds 2.0 mass%, the cold rolling property is deteriorated, so the upper limit is made 2.0 mass%. However, in order to enjoy the effect of improving the magnetic characteristics by reducing Ga, it is effective to reduce it to 0.005 mass% or less, and more preferably 0.001 mass% or less.
- N 0.005 mass% or less Since N is a harmful element that generates nitrides and increases iron loss, the upper limit is set to 0.005 mass%. Preferably it is 0.003 mass% or less.
- Ga 0.0005 mass% or less Ga is the most important element in the present invention, which has a great adverse effect on the hot-rolled plate texture even in a small amount. In order to suppress the above-described adverse effect, it is necessary to set the content to 0.0005 mass% or less. Preferably it is 0.0003 mass% or less, More preferably, it is 0.0001 mass% or less.
- one or two kinds selected from Sn and Sb are further added as Sb: 0.01. It can be contained in a range of up to 0.2 mass% and Sn: 0.01 to 0.2 mass%.
- Sb and Sn are both effective elements for improving the magnetic flux density in order to improve the texture of the product plate. Said effect is acquired by addition of 0.01 mass% or more. However, if it exceeds 0.2 mass%, the above effect is saturated. Therefore, when the above elements are added, it is preferable that the content be in the range of 0.01 to 0.2 mass%. More preferred are Sb: 0.02 to 0.15 mass% and Sn: 0.02 to 0.15 mass%.
- the slab used for producing the non-oriented electrical steel sheet of the present invention may further contain one or more selected from Ca, REM and Mg, with Ca: 0.0005 to 0.03 mass%.
- REM 0.0005 to 0.03 mass%
- Mg 0.0005 to 0.03 mass%.
- Ca, REM, and Mg are all effective elements for reducing iron loss because they fix S and suppress fine precipitation of sulfides. In order to acquire this effect, it is necessary to add 0.0005 mass% or more, respectively. However, the effect is saturated even if added over 0.03 mass%. Therefore, when adding Ca, REM, and Mg, it is preferable to set each in the range of 0.0005 to 0.03 mass%. More preferably, each is in the range of 0.001 to 0.01 mass%.
- the non-oriented electrical steel sheet of the present invention further includes one or more selected from Ni, Co, Cu and Cr, Ni: 0.01 to 2.0 mass%, Co: 0.01 to 2.0 mass%, Cu: 0.03 to 5.0 mass%, and Cr: 0.05 to 5.0 mass% can be contained.
- Ni, Co, Cu, and Cr are all effective elements for reducing iron loss because they increase the specific resistance of steel. In order to obtain this effect, it is preferable to add Ni and Co to 0.01 mass% or more, Cu to 0.03 mass% or more, and Cr to 0.05 mass% or more. However, if Ni and Co are added in excess of 2.0 mass%, and Cu and Cr are added in excess of 5.0 mass%, the alloy cost increases.
- Ni and Co 0.01 to 2.0 mass%
- Cu 0.03 to 5.0 mass%
- Cr 0.1-3.0 mass%
- the balance other than the above components is Fe and inevitable impurities.
- the content of other components is not rejected as long as the effect of the present invention is not impaired.
- the non-oriented electrical steel sheet of the present invention is manufactured using a known method for manufacturing non-oriented electrical steel sheets as long as the steel material used for the manufacture thereof is one having Ga and Al contents in the above-described ranges.
- steel raw material (slab) by a continuous casting method it can manufacture by the method of hot-rolling, pickling, cold-rolling, finish annealing, and apply
- the manufacturing method of the non-oriented electrical steel sheet of the present invention can obtain excellent magnetic properties even if hot-rolled sheet annealing after hot rolling is omitted, hot-rolled sheet annealing may be performed,
- the soaking temperature is preferably in the range of 900 to 1200 ° C. If the soaking temperature is less than 900 ° C., the effect of hot-rolled sheet annealing cannot be sufficiently obtained, and thus the effect of further improving the magnetic properties cannot be obtained. On the other hand, when the temperature exceeds 1200 ° C., the particle size of the hot-rolled sheet becomes too coarse, which may cause cracks and breaks during cold rolling, and is disadvantageous in terms of cost.
- the coil winding temperature after hot rolling may be increased and self-annealing may be performed.
- the coil winding temperature is preferably 650 ° C. or higher from the viewpoint of sufficiently recrystallizing the steel sheet before cold rolling, that is, the hot-rolled sheet. More preferably, it is 670 degreeC or more.
- the cold rolling from the hot-rolled sheet to the cold-rolled sheet with the product sheet thickness (final sheet thickness) can be performed once or twice or more with the intermediate annealing interposed therebetween. Since cold rolling is performed at a temperature of about 200 ° C., the effect of improving the magnetic flux density is great. Therefore, if there is no problem in terms of equipment and production constraints, it is adopted. Is preferred.
- the finish annealing applied to the cold-rolled sheet having the final thickness is preferably continuous annealing at 900 to 1150 ° C. for 5 to 60 seconds. If the soaking temperature is less than 900 ° C., recrystallization does not proceed sufficiently and good magnetic properties cannot be obtained. On the other hand, when the temperature exceeds 1150 ° C., crystal grains become coarse, and iron loss particularly in a high frequency region increases. A more preferable soaking temperature is in the range of 950 to 1100 ° C.
- the steel sheet after the finish annealing is preferably coated with an insulating film on the steel sheet surface in order to increase the inter-layer resistance and reduce the iron loss.
- an insulating film on the steel sheet surface in order to increase the inter-layer resistance and reduce the iron loss.
- the non-oriented electrical steel sheet coated with the insulating coating may be used after further strain relief annealing by the user, or may be used as it is without being subjected to strain relief annealing. Further, after the punching process is performed by the user, the strain relief annealing may be performed. The strain relief annealing is generally performed under conditions of about 750 ° C. ⁇ 2 hours.
- 1 to 22 steel was melted and made into a slab by a continuous casting method, and then the slab was heated at 1140 ° C. for 1 hour, and then hot rolled at a hot rolling finishing temperature of 900 ° C. It was used as a rolled plate and wound around a coil at a temperature of 750 ° C.
- a cold-rolled sheet having a sheet thickness of 0.5 mm is obtained by one cold rolling, and finish annealing is performed with a soaking condition of 1000 ° C. ⁇ 10 sec. To give a non-oriented electrical steel sheet.
- the temperature increase rate in the finish annealing was set to 70 ° C./s.
- a 30 mm ⁇ 280 mm Epstein specimen was collected from the steel plate obtained as described above, and the iron loss W 15/50 and the magnetic flux density B 50 were measured with a 25 cm Epstein apparatus.
- the results are also shown in Table 1. From Table 1, by controlling the component composition of the steel material (slab) and the rate of temperature increase in the finish annealing within the scope of the present invention, the non-directionality excellent in magnetic properties even if hot-rolled sheet annealing is omitted. It turns out that an electromagnetic steel sheet can be obtained.
- No. 1 having the component composition shown in Table 1.
- the slabs were heated at 1140 ° C. for 1 hour, and then hot rolled with a hot rolling finishing temperature of 900 ° C. It was used as a rolled plate and wound around a coil at a temperature of 750 ° C.
- a cold-rolled sheet having a sheet thickness of 0.5 mm is obtained by one cold rolling, and finish annealing is performed with a soaking condition of 1000 ° C. ⁇ 10 sec. To give a non-oriented electrical steel sheet.
- the average rate of temperature increase from 500 ° C. to 800 ° C. in the finish annealing was varied in the range of 20 to 300 ° C./s.
- a 30 mm ⁇ 280 mm Epstein specimen was collected from the steel plate obtained as described above, and the iron loss W 15/50 and the magnetic flux density B 50 were measured with a 25 cm Epstein apparatus.
- the results are also shown in Table 1. From Tables 1 and 2, the component composition of the steel material (slab) is controlled within the range of the present invention, or the component composition of the steel material (slab) and the temperature increase rate in finish annealing are within the range of the present invention. It can be seen that, by controlling, a non-oriented electrical steel sheet having excellent magnetic properties can be obtained even if hot-rolled sheet annealing is omitted.
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Abstract
Description
また、特許文献2には、合金成分元素を制御し,熱間圧延条件を最適化し、鋼の相変態を用いて熱延組織を制御することにより、熱延板焼鈍を行わなくても鉄損を低くし、磁束密度を向上させた無方向性電磁鋼板の製造方法に関する技術が開示されている。
<実験1>
発明者らは、熱延板焼鈍を省略しても磁気特性に優れる無方向性電磁鋼板を開発するべく、不可避的不純物であるGaの含有量が磁束密度に及ぼすに及ぼす影響を調査した。
C:0.0025mass%、Si:3.0mass%、Mn:0.25mass%、P:0.01mass%、N:0.002mass%、S:0.002mass%を含有し、Alを0.2mass%および0.002mass%の2水準で含有する成分系をベースとし、これにGaをtr.~0.002mass%の範囲で種々に変化させて添加した鋼を実験室的に溶解し、鋳造して鋼塊とし、熱間圧延して板厚3.0mmの熱延板とした後、巻取温度が750℃に相当する熱処理を施した。次いで、上記熱延板を熱延板焼鈍を施すことなく酸洗し、冷間圧延して板厚0.50mmの冷延板とした後、20vol%H2-80vol%N2雰囲気下で1000℃×10secの仕上焼鈍を施した。なお、仕上焼鈍における500~800℃間の平均昇温速度は70℃/sとした。
この結果から、Gaの含有量が0.0005mass%以下で、磁束密度B50が急激に向上すること、および、上記Ga低減による磁束密度向上効果は、Alの含有量が0.2mass%よりも0.002mass%の方が大きいことがわかった。
そこで、発明者らは、磁束密度に及ぼすAl含有量の影響を調査する実験を行った。
C:0.0025mass%、Si:3.0mass%、Mn:0.25mass%、P:0.01mass%、N:0.002mass%、S:0.002mass%を含有し、さらにGaを0.0002mass%まで低減した成分系をベースとし、これにAlをtr.~0.01mass%の範囲で種々に変化させて添加した鋼を実験室的に溶解し、上記の<実験1>と同様にして、仕上焼鈍後の鋼板の磁束密度B50を、25cmエプスタイン装置で測定した。
次いで、発明者らは、仕上焼鈍における昇温速度が磁束密度に及ぼす影響を調査する実験を行った。
C:0.0025mass%、Si:3.0mass%、Mn:0.25mass%、P:0.01mass%、N:0.002mass%、S:0.002mass%、Al:0.002mass%を含有し、さらにGaを0.0001mass%および0.001mass%の2水準で含有する鋼を実験室的に溶解し、上記<実験1>と同様にして、仕上焼鈍後の鋼板の磁束密度B50を25cmエプスタイン装置で測定した。この際、仕上焼鈍における500℃から800℃までの平均昇温速度を20~300℃/sの範囲で種々に変化させた。
本発明は、上記の新規な知見に基き開発したものである。
C:0.01mass%以下
Cは、製品板における磁気時効を引き起こすため0.01mass%以下に制限する。好ましくは0.005mass%以下、より好ましくは0.003mass%以下である。
Siは、鋼の固有抵抗を高め、鉄損低減に有効な元素であるため、1mass%以上含有させることが好ましい。しかし、6mass%を超えて添加すると、著しく脆化して冷間圧延することが困難となるため、上限は6mass%とする。好ましくは1~4mass%、より好ましくは1.5~3mass%の範囲である。
Mnは、熱間圧延時の赤熱脆性を防止するのに有効な元素であるため、0.05mass%以上含有させる必要がある。しかし、3mass%を超えると冷間圧延性が低下したり、磁束密度の低下を招いたりするため、上限は3mass%とする。好ましくは0.05~1.5mass%、より好ましくは0.2~1.3mass%の範囲である。
Pは、固溶強化能に優れるため、硬さ調整し、打抜加工性の改善に有効な元素であるので添加することができる。しかし、0.2mass%を超えると、脆化が顕著となるため、上限は0.2mass%とする。好ましくは0.15mass%以下、より好ましくは0.1mass%以下である。
Sは、MnS等の硫化物を生成して、鉄損を増加させる有害元素であるため上限を0.01mass%に制限する。好ましくは0.005mass%以下、より好ましくは0.003mass%以下である。
Alは、鋼の比抵抗を高めて渦電流損を低下するのに有効な元素であるので添加することができる。しかし、2.0mass%を超えると、冷間圧延性が低下するため、上限は2.0mass%とする。
ただし、Ga低減による磁気特性の向上効果をより享受するためには、0.005mass%以下に低減することが有効であり、より好ましくは0.001mass%以下である。
Nは、窒化物を生成し、鉄損を増加させる有害元素であるため、上限を0.005mass%とする。好ましくは0.003mass%以下である。
Gaは、微量でも熱延板集合組織に大きな悪影響を及ぼす、本発明において最も重要な元素である。上記悪影響を抑止するためには、0.0005mass%以下とすることが必要である。好ましくは0.0003mass%以下、より好ましくは0.0001mass%以下である。
SbおよびSnは、いずれも製品板の集合組織を改善するため、磁束密度の向上に有効な元素である。上記の効果は0.01mass%以上の添加で得られる。しかし、0.2mass%を超えると、上記効果が飽和する。よって、上記元素を添加する場合は、それぞれ0.01~0.2mass%の範囲とするのが好ましい。より好ましくはSb:0.02~0.15mass%、Sn:0.02~0.15mass%の範囲である。
Ca,REMおよびMgは、いずれも、Sを固定し、硫化物の微細析出を抑制するため、鉄損低減に有効な元素である。この効果を得るためには、それぞれ0.0005mass%以上添加する必要がある。しかし、0.03mass%超え添加しても、上記効果は飽和する。よって、Ca,REMおよびMgを添加する場合は、それぞれ0.0005~0.03mass%の範囲とするのが好ましい。より好ましくは、それぞれ0.001~0.01mass%の範囲である。
本発明の無方向性電磁鋼板は、その製造に用いる鋼素材として、GaおよびAlの含有量が上記した範囲内のものを用いる限り、公知の無方向性電磁鋼板の製造方法を用いて製造することができ、例えば、転炉や電気炉等で鋼を溶製し、さらに真空脱ガス設備等で二次精錬する精錬プロセスで上記した成分組成に調整した鋼を、造塊-分塊圧延法あるいは連続鋳造法で鋼素材(スラブ)とした後、熱間圧延し、酸洗し、冷間圧延し、仕上焼鈍し、絶縁被膜を塗布・焼付する方法で製造することができる。
なお、急速加熱する方法については特に制限はないが、例えば、直接通電加熱法あるいは誘導加熱法などを用いることができる。
上記のようにして得た鋼板から30mm×280mmのエプスタイン試験片を採取し、25cmエプスタイン装置で鉄損W15/50および磁束密度B50を測定し、その結果を表1中に併記した。
表1から、鋼素材(スラブ)の成分組成、および、仕上焼鈍における昇温速度を本発明の範囲内に制御することにより、熱延板焼鈍を省略しても、磁気特性に優れる無方向性電磁鋼板を得ることができることがわかる。
上記のようにして得た鋼板から30mm×280mmのエプスタイン試験片を採取し、25cmエプスタイン装置で鉄損W15/50および磁束密度B50を測定し、その結果を表1中に併記した。
表1および2から、鋼素材(スラブ)の成分組成を本発明の範囲内に制御することで、もしくは、鋼素材(スラブ)の成分組成と仕上焼鈍における昇温速度を本発明の範囲内に制御することで、熱延板焼鈍を省略しても、磁気特性に優れる無方向性電磁鋼板を得ることができることがわかる。
Claims (5)
- C:0.01mass%以下、Si:6mass%以下、Mn:0.05~3mass%、P:0.2mass%以下、Al:2mass%以下、N:0.005mass%以下、S:0.01mass%以下、Ga:0.0005mass%以下を含有し、残部がFeおよび不可避的不純物からなる成分組成を有するスラブを熱間圧延し、熱延板焼鈍を施すことなく、あるいは、熱延板焼鈍または自己焼鈍を施した後、酸洗し、1回または中間焼鈍を挟む2回以上の冷間圧延し、仕上焼鈍し、絶縁被膜を被成する一連の工程からなる無方向性電磁鋼板の製造方法において、
上記仕上焼鈍の加熱過程における500~800℃間の平均昇温速度を50℃/s以上とすることを特徴とする無方向性電磁鋼板の製造方法。 - 上記スラブの成分組成におけるAlの含有量が0.005mass%以下であることを特徴とする請求項1に記載の無方向性電磁鋼板の製造方法。
- 上記スラブは、上記成分組成に加えてさらに、Sn:0.01~0.2mass%およびSb:0.01~0.2mass%から選ばれる1種または2種を含有することを特徴とする請求項1または2に記載の無方向性電磁鋼板の製造方法。
- 上記スラブは、上記成分組成に加えてさらに、Ca:0.0005~0.03mass%、REM:0.0005~0.03mass%およびMg:0.0005~0.03mass%のうちから選ばれる1種または2種以上を含有することを特徴とする請求項1~3にいずれか1項に記載の無方向性電磁鋼板の製造方法。
- 上記スラブは、上記成分組成に加えてさらに、Ni:0.01~2.0mass%、Co:0.01~2.0mass%、Cu:0.03~5.0mass%およびCr:0.05~5.0mass%のうちから選ばれる1種または2種以上を含有することを特徴とする請求項1~4にいずれか1項に記載の無方向性電磁鋼板の製造方法。
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|---|---|---|---|---|
| JP2019178374A (ja) * | 2018-03-30 | 2019-10-17 | 日本製鉄株式会社 | 無方向性電磁鋼板およびその製造方法、並びにモータコアおよびその製造方法 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102510146B1 (ko) * | 2018-10-31 | 2023-03-14 | 제이에프이 스틸 가부시키가이샤 | 무방향성 전기 강판의 제조 방법 |
| EP3943633A4 (en) * | 2019-03-20 | 2022-09-07 | Nippon Steel Corporation | NON-ORIENTED ELECTROMAGNETIC STEEL SHEET AND PROCESS FOR THE PRODUCTION THEREOF |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05186834A (ja) * | 1991-07-05 | 1993-07-27 | Nippon Steel Corp | 高磁束密度、低鉄損を有する無方向性電磁鋼板の製造方法 |
| JPH09241809A (ja) * | 1996-03-01 | 1997-09-16 | Kawasaki Steel Corp | 耐食性に優れたCr含有フェライト系鉄合金 |
| JPH09310124A (ja) * | 1996-05-21 | 1997-12-02 | Nippon Steel Corp | 形状と磁気特性の優れた無方向性電磁鋼板の製造方法 |
| JP2011084761A (ja) * | 2009-10-13 | 2011-04-28 | Sumitomo Metal Ind Ltd | 回転子用無方向性電磁鋼板およびその製造方法 |
| JP2012046806A (ja) * | 2010-08-30 | 2012-03-08 | Jfe Steel Corp | 無方向性電磁鋼板の製造方法 |
| JP2012132070A (ja) * | 2010-12-22 | 2012-07-12 | Jfe Steel Corp | 無方向性電磁鋼板の製造方法 |
| JP2013133485A (ja) * | 2011-12-26 | 2013-07-08 | Jfe Steel Corp | 伸びフランジ性に優れた高強度熱延鋼板およびその製造方法 |
| JP2013189693A (ja) * | 2012-03-15 | 2013-09-26 | Jfe Steel Corp | 無方向性電磁鋼板の製造方法 |
| WO2016027565A1 (ja) * | 2014-08-20 | 2016-02-25 | Jfeスチール株式会社 | 磁気特性に優れる無方向性電磁鋼板 |
Family Cites Families (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19930519C1 (de) * | 1999-07-05 | 2000-09-14 | Thyssenkrupp Stahl Ag | Verfahren zum Herstellen von nicht kornorientiertem Elektroblech |
| YU160269A (en) * | 1968-07-17 | 1977-04-30 | Csepel Muevek Femmueve | Steel alloy for the manufacture of transfomer tapes and plates of a cubic texture |
| JPS5228379B2 (ja) | 1972-03-08 | 1977-07-26 | ||
| US4046602A (en) * | 1976-04-15 | 1977-09-06 | United States Steel Corporation | Process for producing nonoriented silicon sheet steel having excellent magnetic properties in the rolling direction |
| JPS60114521A (ja) | 1983-11-24 | 1985-06-21 | Kawasaki Steel Corp | 珪素鋼板の連続仕上焼鈍炉の操業方法 |
| JPS62102507A (ja) * | 1985-10-29 | 1987-05-13 | Kawasaki Steel Corp | 無方向性けい素鋼板の製造方法 |
| US4898627A (en) * | 1988-03-25 | 1990-02-06 | Armco Advanced Materials Corporation | Ultra-rapid annealing of nonoriented electrical steel |
| JPH0841541A (ja) | 1994-07-28 | 1996-02-13 | Nippon Steel Corp | 磁気特性の優れた無方向性電磁鋼板の製造方法 |
| JP2000273549A (ja) * | 1999-03-25 | 2000-10-03 | Nkk Corp | 磁気特性の優れた無方向性電磁鋼板の製造方法 |
| JP4258951B2 (ja) | 2000-05-15 | 2009-04-30 | Jfeスチール株式会社 | 無方向性電磁鋼板 |
| JP4718749B2 (ja) | 2002-08-06 | 2011-07-06 | Jfeスチール株式会社 | 回転機用高磁束密度無方向性電磁鋼板及び回転機用部材 |
| JP3852419B2 (ja) | 2003-02-06 | 2006-11-29 | 住友金属工業株式会社 | 無方向性電磁鋼板 |
| US7470333B2 (en) | 2003-05-06 | 2008-12-30 | Nippon Steel Corp. | Non-oriented electrical steel sheet excellent in core loss and manufacturing method thereof |
| JP2005200756A (ja) | 2004-01-19 | 2005-07-28 | Sumitomo Metal Ind Ltd | 無方向性電磁鋼板の製造方法 |
| JP4600003B2 (ja) | 2004-11-16 | 2010-12-15 | Jfeスチール株式会社 | モジュラー型モータ用無方向性電磁鋼板およびその製造方法 |
| WO2006068399A1 (en) | 2004-12-21 | 2006-06-29 | Posco Co., Ltd. | Non-oriented electrical steel sheets with excellent magnetic properties and method for manufacturing the same |
| CN1796015A (zh) | 2004-12-28 | 2006-07-05 | 宝山钢铁股份有限公司 | 薄板坯连铸连轧生产冷轧无取向电工钢的方法 |
| WO2007007423A1 (ja) | 2005-07-07 | 2007-01-18 | Sumitomo Metal Industries, Ltd. | 無方向性電磁鋼板およびその製造方法 |
| RU2398894C1 (ru) | 2006-06-16 | 2010-09-10 | Ниппон Стил Корпорейшн | Лист высокопрочной электротехнической стали и способ его производства |
| JP5194535B2 (ja) | 2006-07-26 | 2013-05-08 | 新日鐵住金株式会社 | 高強度無方向性電磁鋼板 |
| JP5228379B2 (ja) | 2006-07-27 | 2013-07-03 | 新日鐵住金株式会社 | 強度と磁気特性に優れた無方向性電磁鋼板とその製造方法 |
| JP5839778B2 (ja) | 2010-04-06 | 2016-01-06 | 新日鐵住金株式会社 | 高周波鉄損の優れた無方向性電磁鋼板、及びその製造方法 |
| JP5780013B2 (ja) * | 2011-06-28 | 2015-09-16 | Jfeスチール株式会社 | 無方向性電磁鋼板の製造方法 |
| JP5733409B2 (ja) * | 2011-09-27 | 2015-06-10 | Jfeスチール株式会社 | 無方向性電磁鋼板 |
| BR112013019023A2 (pt) | 2012-05-31 | 2016-10-04 | Nippon Steel & Sumitomo Metal Corp | chapa de aço elétrico não orientado |
| KR20150093807A (ko) * | 2013-02-21 | 2015-08-18 | 제이에프이 스틸 가부시키가이샤 | 자기 특성이 우수한 세미프로세스 무방향성 전기 강판의 제조 방법 |
| JP5825494B2 (ja) | 2013-03-06 | 2015-12-02 | Jfeスチール株式会社 | 無方向性電磁鋼板およびその製造方法 |
| JP6057082B2 (ja) | 2013-03-13 | 2017-01-11 | Jfeスチール株式会社 | 磁気特性に優れる無方向性電磁鋼板 |
| BR112015023929B1 (pt) | 2013-04-09 | 2020-03-31 | Nippon Steel Corporation | Método de produção de uma chapa de aço elétrico não orientado |
| JP5995002B2 (ja) | 2013-08-20 | 2016-09-21 | Jfeスチール株式会社 | 高磁束密度無方向性電磁鋼板およびモータ |
| JP6048699B2 (ja) * | 2015-02-18 | 2016-12-21 | Jfeスチール株式会社 | 無方向性電磁鋼板とその製造方法ならびにモータコア |
-
2016
- 2016-06-27 RU RU2018104088A patent/RU2686424C1/ru active
- 2016-06-27 CN CN201680045305.1A patent/CN107849632A/zh active Pending
- 2016-06-27 KR KR1020177037171A patent/KR102062184B1/ko active Active
- 2016-06-27 WO PCT/JP2016/068943 patent/WO2017022360A1/ja not_active Ceased
- 2016-06-27 JP JP2016561399A patent/JP6390876B2/ja active Active
- 2016-06-27 EP EP16832639.5A patent/EP3333271B1/en active Active
- 2016-06-27 US US15/750,037 patent/US10975451B2/en active Active
- 2016-07-07 TW TW105121560A patent/TWI641704B/zh active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05186834A (ja) * | 1991-07-05 | 1993-07-27 | Nippon Steel Corp | 高磁束密度、低鉄損を有する無方向性電磁鋼板の製造方法 |
| JPH09241809A (ja) * | 1996-03-01 | 1997-09-16 | Kawasaki Steel Corp | 耐食性に優れたCr含有フェライト系鉄合金 |
| JPH09310124A (ja) * | 1996-05-21 | 1997-12-02 | Nippon Steel Corp | 形状と磁気特性の優れた無方向性電磁鋼板の製造方法 |
| JP2011084761A (ja) * | 2009-10-13 | 2011-04-28 | Sumitomo Metal Ind Ltd | 回転子用無方向性電磁鋼板およびその製造方法 |
| JP2012046806A (ja) * | 2010-08-30 | 2012-03-08 | Jfe Steel Corp | 無方向性電磁鋼板の製造方法 |
| JP2012132070A (ja) * | 2010-12-22 | 2012-07-12 | Jfe Steel Corp | 無方向性電磁鋼板の製造方法 |
| JP2013133485A (ja) * | 2011-12-26 | 2013-07-08 | Jfe Steel Corp | 伸びフランジ性に優れた高強度熱延鋼板およびその製造方法 |
| JP2013189693A (ja) * | 2012-03-15 | 2013-09-26 | Jfe Steel Corp | 無方向性電磁鋼板の製造方法 |
| WO2016027565A1 (ja) * | 2014-08-20 | 2016-02-25 | Jfeスチール株式会社 | 磁気特性に優れる無方向性電磁鋼板 |
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| JP7142095B2 (ja) | 2017-12-26 | 2022-09-26 | ポスコ | 無方向性電磁鋼板およびその製造方法 |
| JP2021509447A (ja) * | 2017-12-26 | 2021-03-25 | ポスコPosco | 無方向性電磁鋼板およびその製造方法 |
| US11634786B2 (en) | 2017-12-26 | 2023-04-25 | Posco Co., Ltd | Non-oriented electrical steel sheet and method for preparing same |
| JP7352057B2 (ja) | 2018-03-30 | 2023-09-28 | 日本製鉄株式会社 | 無方向性電磁鋼板およびその製造方法、並びにモータコアおよびその製造方法 |
| JP2019178374A (ja) * | 2018-03-30 | 2019-10-17 | 日本製鉄株式会社 | 無方向性電磁鋼板およびその製造方法、並びにモータコアおよびその製造方法 |
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| US11866797B2 (en) | 2018-11-02 | 2024-01-09 | Nippon Steel Corporation | Non-oriented electrical steel sheet |
| JP2022509670A (ja) * | 2018-11-30 | 2022-01-21 | ポスコ | 無方向性電磁鋼板およびその製造方法 |
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| US12215400B2 (en) | 2018-11-30 | 2025-02-04 | Posco Co., Ltd | Non-directional electrical steel sheet and method for producing same |
| US12454732B2 (en) | 2018-11-30 | 2025-10-28 | Posco Co., Ltd | Non-directional electrical steel sheet and method for producing same |
| WO2025187797A1 (ja) * | 2024-03-07 | 2025-09-12 | Jfeスチール株式会社 | 方向性電磁鋼板およびその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3333271A4 (en) | 2018-07-04 |
| EP3333271B1 (en) | 2020-06-17 |
| CN107849632A (zh) | 2018-03-27 |
| EP3333271A1 (en) | 2018-06-13 |
| US10975451B2 (en) | 2021-04-13 |
| TWI641704B (zh) | 2018-11-21 |
| KR20180011809A (ko) | 2018-02-02 |
| US20180230564A1 (en) | 2018-08-16 |
| JP6390876B2 (ja) | 2018-09-19 |
| RU2686424C1 (ru) | 2019-04-25 |
| TW201710524A (zh) | 2017-03-16 |
| KR102062184B1 (ko) | 2020-01-03 |
| JPWO2017022360A1 (ja) | 2017-08-10 |
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