A7 B7 416973 五、發明説明（ 本發明係關錢鎳型合金製成之片自藉直料製薄片得 到之薄片之製法。 鐵鎳型合金爲已知的及因其磁性性質或其絲性質而使 用。其化學組合物主要包含25%至50%重量比之鎳，及 5 0%至7〇%重量比之鐵，視情況及至少—種以低於5%之 含量取自姑、絡與细之合金元素。例如，具有非常低㈣ 係數之合金，其含約36%之鎳或约33%之鎳及約4%之 鈷，其餘本質上爲鐵，视情況與一些少量之互補元素，及 雜質，爲已知的3這些低膨脹係數合金亦因其良好磁性性 質而使用，特別是具有通常在十至數十毫米間厚度之冷卓 片形式。得到之磁性性質特徵特別爲55八岫之保磁場:^ 爲了製造此冷片，合金以具有大於1〇〇毫米厚度之錠塊 或厚板形式鑄製，然後其熱軋製以到具有低於5毫米厚度 之熱片。此熱片然後冷軋以得到冷片，在其上以約7 t溫度進行再結晶退火操作。此技術具有需要大規模熱軋 操作之缺點=> 爲了限制或避免熱軋製，合金可以具有小於i 〇毫米厚 度之薄片形式直接連續鑄製。爲了完成之，可使用連續鑄 製機，其中薄片在兩個具有水平軸之轉動輥間鑄製。然 而，本發明人已發現，由連續鑄製薄片得到之冷軋片令人 驚奇地具有實質上比來自錠塊或厚板之冷軋片高之保瘦 本發明之目的爲藉由提供一種製造鐵鎳型合金之冷札片 之方法補救此缺點，其得自藉直接薄片鋳製得到之薄片， •4 氺紙ίΑ尺度邊州中標卑（—^S ) Λ4規格（2ΐ〇χ 297公漦） (讀先Μ讀背面之注意事項再填寫本頁) .裝. 丁 線 .ί I I I . 416S73 五、發明説明（ A7 B7 η 局 f： 合 u 印 具有如由鍵塊或厚板製造之相同合金之片之令人滿意磁性 性質=: 爲此目的’本發明之標的爲一種製造由鐵鎳型合金製成 之片之方法，其主要含2 5 %至5 0 %重量比之鎳及5 0 %至 7 5 %重量比之鐵，視情況及低於8 %重量比之含量之一或 更多種合金元素，特別如鈷、鉻、鉬、錳、矽、釩、钽、 钦與銘，其餘爲由熔煉操作生成之雜質，在此方法中，連 續鑄製具有+於1 〇毫米.厚度之薄片，此薄片軋製，及在 軋製之前或之後，進行包括以溫度τ (。〇)之溫度保持時間 t (小時）使得： t>0. 5 X 1 0*12 次方（38000/(T+273)) 之均化處理，以得到低於〇 . 4 %之鎳之”標準凝析程度"。 車父佳爲，銘、銘、细、摄、碎、訊、組、飲與銘含量低 於或等於8 % ：> 較佳爲，鎳之標準凝析程度低於0.3 5 %。 均化處理可在直接得自‘連續鑄製之薄片上或在薄片已熱 軋後，或在冷軋操作後進行。 較佳爲’在均化處理後，進行冷軋操作至片之最後厚 度，以產生控制材質之片。 在線含量爲35%至37%之間時，保磁場He在片已在750 °C退火1 5分鐘後低於4 5 A/m。 在線含量爲3 2 %至3 4 %之間及错含量爲.3.5 %至6.5 %之 間時’保磁場He在片已在750 °C退火15分鐘後低於55 A/m ° 本紙疚尺度適用屮闺围家標冷（（，NS ) Λ4规格（210/ 297公#—) (請先閱讀背面之注意事項再填寫本頁) 裝 訂 ,'^:;τί.部中央ur:v'局 P 工"抡合<'-"-印,;/' 415873 五、發明说明（3 ) 本發明現在詳細敘述，但非限制方式，及以實例描述。 本發明人已完成新穎及相當出乎預料之觀察，鐵鎳型合 金之磁性性質受鎳在由固化生成之樹枝間空間之微凝析影 響s " 爲了澄明此影響，其已定義"標準凝析程度"，而可將冷 軋片上與意圖冷軋之熱軋片上之鎳之微凝析特徵化。意圖 冷軋之熱軋片可爲直接藉薄片連續鑄製，視情況及已進行 熱軋操作或互補熱處理得到之薄片^爲了更特別及藉指示 之方式，直接藉薄片連續鑄製椁到之薄片具有i毫米0至\'〇 毫米間之厚度。 本發明人足義之，|標準凝析程度,，爲鎳含量分佈標準誤差 經在85〇τ退火15分鐘再結晶之小於0.2毫米厚冷軋片厚 度之未偏差估計。 爲了設定此標準凝析程度，藉結合能量分佈光譜儀㈣ 之掃描電子顯微鏡，在小於〇 2毫米厚片上測量經厚度分 佈Ό點之鎳含量’其沿垂直表面之線每^。如 此 <于到η個鎳含量（Nl)J，j爲1至η ’及使用下式計算桿 準凝析程度，稱爲^犯： ^ ^-[1 (_r(NiWVi)r 在此式中’⑽平均爲(N小値之算術平均及η爲測量數。 使用此定義，在盔特殊# 在;·、特殊處理下’依照先行技藝’鎳之 ^疋王度對由藉直接薄片連續鑄製直接得到之薄 t於-------ίτ------Ml (諳先閱讀背面之注項再填寫本頁) i!,'':i;r'部 t ^"-:f,;v^u ^消於合竹^—印 ¥ nes73 a7 ______^ B7 五、發明説明（4 ) 熱片形成之冷片爲大於0.5%，而其對由錠塊形成之冷片 爲 + 於 0.3 5% = 爲了製造得自薄片連續铸製之冷軋片，如以上定義之鐵 線型合金在弧形爐中熔煉，使用杓中精製，其意圖使此合 金具有，例如’ 3 5 %之鎳含量及較佳爲〇. 〇2 %至〇 . 5 %之 間之錳含量，其餘爲鐵及由熔煉操作生成之雜質。如此得 到之液態合金鑄使用薄片連續鑄製機鑄製成薄片形式，其 包含兩個水平配置及彼此平行以形成具有小於i 〇毫米及 通常爲1毫米至5毫米之缝之親·。兩個輥以關於其各轴之 相反方向轉動以驅動合金向下，使其通過縫。兩個輕藉内 循環水冷卻’使得合金在接觸輥·時冷卻，及以具有大約等 於輥間間隙寬度之厚度之固化片形式離開其夾。薄片然後 藉捲線機捲成線圈以得到線圈，其通常放置以自然冷卻。 鸽製後’薄片可視情況熱軋，較佳爲在片已再加熱至 1〇50°C至1300Ό間之後。 如此得到之熱片在浸酸後冷軋以得.到具有所需最終厚度 之冷片，其爲〇 . 1毫米至〇 . 2 5毫米之間。通常，此冷軋在 以在約1 0 0 0。(：之溫度之再結晶退火操作分隔之許多步騍 中進行。藉實例之方式，第一步驟可得〇 . 5毫米至2毫米 間之厚度，第二步驟可得0.15毫米至〇 3毫米間之厚度， 及最中步驟造成最終厚度。使用之冷軋操作不僅得到最終 厚度，亦給予片較佳爲必須具有"立方，，形式之材質，及 控制粒度，其較佳爲必須具有8至9之AFN〇R指數。 除了熱軋與冷軋操作，片之製造籍均化處理完成，其包 本紙乐尺度適用中SR家標々（（，NS ) Λ4規格（21〇χ29?公蝥） ---------求------11------線’ t讀先閱讀背面之注意事項存填K本肓) A7 416873 五、發明説明（5 ) — 括至/個在T ( C )之溫度時間t (小時）之溫度保持，使得 木方（38000/(T+273))。 係數A大於或等於〇.5 x if2而且較佳爲大於！ X仞七。 吓可在溫度L、丁2...Tn時間tl、“丄而進行許多連績 均化處理。在此情形，時間與溫度必須爲使得： ηA7 B7 416973 V. Description of the invention (This invention refers to a method for making a sheet made of nickel-type alloy from a straight sheet. The iron-nickel type alloy is known and due to its magnetic properties or its silk properties. Use. Its chemical composition mainly contains 25% to 50% by weight of nickel, and 50% to 70% by weight of iron, depending on the situation and at least-from less than 5% content from Gu, Luo and Fine alloying elements. For example, alloys with very low ㈣ coefficients, which contain about 36% nickel or about 33% nickel and about 4% cobalt, and the rest are essentially iron, depending on the situation and some small amounts of complementary elements, And impurities, known as 3. These low-expansion-coefficient alloys are also used because of their good magnetic properties, especially in the form of cold lamellae with a thickness usually between ten and tens of millimeters. The magnetic properties obtained are particularly 55 岫Magnetic field retention: ^ To manufacture this cold sheet, the alloy is cast in the form of ingots or thick plates with a thickness of more than 100 mm, and then it is hot rolled to a hot sheet with a thickness of less than 5 mm. This hot sheet It is then cold-rolled to obtain cold flakes, on which re-processing is performed at a temperature of about 7 t Grain annealing operation. This technology has the disadvantage of requiring large-scale hot rolling operations => In order to limit or avoid hot rolling, the alloy can be continuously cast directly in the form of a thin sheet with a thickness of less than 100 mm. In order to complete it, continuous casting can be used Making machine in which the flakes are cast between two rotating rolls with a horizontal axis. However, the inventors have found that cold rolled flakes obtained from continuous casting of flakes surprisingly have a substantially lower ratio than from ingots or thick plates The purpose of the present invention is to remedy this shortcoming by providing a method for manufacturing a cold-rolled sheet of an iron-nickel alloy, which is obtained from a sheet obtained by direct sheet forming. Bianzhou won the bidding (— ^ S) Λ4 specification (2ΐ〇χ 297 公 漦) (read the notes on the back and then fill out this page). Packing. Ding line. Ί III. 416S73 V. Description of the invention (A7 B7 η Bureau f: The satisfactory magnetic properties of a sheet of the same alloy as that made of a key block or a thick plate =: For this purpose 'the subject of the present invention is a sheet made of an iron-nickel type alloy Method, which mainly contains 2 5% to 50% by weight of nickel and 50% to 75% by weight of iron, as appropriate, and one or more alloying elements below 8% by weight, especially such as cobalt, chromium, molybdenum , Manganese, silicon, vanadium, tantalum, Qin Yuming, and the rest are impurities generated by the smelting operation. In this method, a sheet having a thickness of + 10 mm. Is continuously cast, and the sheet is rolled and rolled. Before or after, a homogenization process including a temperature holding time t (hour) with a temperature τ (.〇) such that: t > 0.5 X 1 0 * 12 power (38000 / (T + 273)) is performed to A "standard degree of coagulation" of nickel below 0.4% was obtained. Che Fu Jia, the content of Ming, Ming, fine, photo, broken, news, group, drink and Ming is less than or equal to 8%: > Preferably, the standard degree of condensation of nickel is less than 0.35%. The homogenization process can be performed on a sheet obtained directly from 'continuous casting' or after the sheet has been hot rolled, or after a cold rolling operation. Preferably, 'after the homogenization process, a cold rolling operation is performed to the final thickness of the sheet to produce a sheet of controlled material. When the line content is between 35% and 37%, the coercive field He is lower than 4 5 A / m after the sheet has been annealed at 750 ° C for 15 minutes. When the online content is between 32% and 34% and the error content is between .3.5% and 6.5%, the magnetic field He is below 55 A / m ° after the sheet has been annealed at 750 ° C for 15 minutes. Applicable to the standard of the house ((, NS) Λ4 specifications (210/297) # —) (Please read the precautions on the back before filling this page) Binding, '^ :; τί.Ministry Central ur: v' Bureau P 工 " 抡 合 < '-"-印,; /' 415873 V. Description of the Invention (3) The present invention will now be described in detail, but not by way of limitation, and described by way of example. The inventor has completed novel and equivalent Unexpected observations, the magnetic properties of iron-nickel alloys are affected by the micro-condensation of nickel in the space between the branches generated by solidification. &Quot; To clarify this effect, it has been defined " standard degree of condensate " Characterize the micro-condensation of nickel on the cold-rolled sheet and on the hot-rolled sheet intended to be cold-rolled. The hot-rolled sheet intended to be cold-rolled can be continuously cast directly from the sheet, and it may be obtained by hot rolling operation or complementary heat treatment as appropriate Sheets ^ In order to be more special and by the way of instructions, the sheets obtained by continuous casting directly from the sheets have i mm 0 to \ '〇Ｍ Thickness between meters. The inventor's meaning is that the standard degree of condensation is the unbiased estimate of the thickness of the cold-rolled sheet less than 0.2 mm thick after the standard error of the nickel content distribution is recrystallized after annealing at 85 ° for 15 minutes. To set This standard degree of condensing is measured by scanning electron microscopy in combination with an energy distribution spectrometer on a sheet less than 0.2 mm thick. The nickel content through the thickness distribution point is measured every line along the vertical surface. Nickel content (Nl) J, j is 1 to η 'and the degree of quasi-condensation of the rod is calculated using the following formula, called ^ criminal: ^ ^-[1 (_r (NiWVi) r In this formula,' ⑽ averages (N The arithmetic mean of η and η are the measured numbers. Using this definition, under the helmet special # under the special treatment, 'according to the prior art' nickel ^ 疋 Wang degree pairs the thin t directly obtained by continuous casting by direct thin sheet In ------- ίτ ------ Ml (I read the notes on the back before filling this page) i!, '': I; r '部 t ^ "-:f,; v ^ u ^ 消 于 合 竹 ^ —print ¥ nes73 a7 ______ ^ B7 V. Description of the Invention (4) The cold plate formed by the hot plate is greater than 0.5%, and the cold plate formed by the ingot is + + 0.3 5% = In order to manufacture cold-rolled sheets obtained from continuous casting of thin flakes, an iron wire alloy as defined above is smelted in an arc furnace and refined using sintering. The intention is to make this alloy have, for example, a nickel content of '35% and a Preferably, the manganese content is between 0.02% and 0.5%, and the rest is iron and impurities generated by the smelting operation. The liquid alloy casting thus obtained is cast into a thin sheet form using a continuous sheet casting machine, which contains two Are arranged horizontally and parallel to each other to form a prostitute with a seam smaller than 100 mm and usually 1 mm to 5 mm. The two rollers are turned in opposite directions about their axes to drive the alloy down through the slot. Two lightly cooled by internal circulating water 'allow the alloy to cool when it contacts the rollers, and leave the clamp in the form of a solidified sheet having a thickness approximately equal to the width of the gap between the rollers. The sheet is then wound into a coil by a winder to obtain a coil, which is usually placed for natural cooling. After the dove is made, the sheet may be hot-rolled as appropriate, preferably after the sheet has been reheated to between 1050 ° C and 1300 ° C. The hot flakes thus obtained are cold-rolled after pickling to obtain cold flakes having a desired final thickness, which is between 0.1 mm and 0.25 mm. Usually, this cold rolling is performed at about 100 °. (: The temperature of the recrystallization annealing operation separated in many steps). By way of example, the first step can be obtained between 0.5 mm to 2 mm thickness, the second step can be obtained from 0.15 mm to 0.3 mm The thickness and the middle step result in the final thickness. The cold rolling operation used not only obtains the final thickness, but also gives the sheet preferably having a "cubic," form material, and controlling grain size, which preferably has 8 to The AFN0R index of 9. In addition to the hot rolling and cold rolling operations, the manufacturing of the tablets has been homogenized, and the coated paper scale is applicable to the SR family standard ((, NS) Λ4 specification (21〇χ29?). --------- Question ------ 11 ------ line 't read first read the notes on the back and fill in the K 肓) A7 416873 V. Description of the invention (5) — including The temperature is maintained at a temperature time t (hours) at T (C), so that the wood (38000 / (T + 273)). The coefficient A is greater than or equal to 0.5 x if2 and preferably greater than! X 仞7. It is possible to perform many successive homogenizations at temperatures L, D2, Tn, time t1, and "丄. In this case, time and temperature must be such that η
Σ ^xpi.{38000/(T. + 273))j> A (A大於0.5 χ ι〇 12而且較佳爲大於1 χ ι〇_12)。 這些條件對應，例如’對於3·毫米厚之片（直接藉薄片連 續鑄製得到）在1150。(： 〇.5小時或在12〇〇Ό 1〇分鐘之溫度 保持a 雖然產物越薄，產物進行之均化處理更有效及更容易實 行，在特別是意圖冷片之最終冷軋以產生特定粒度與材質 時，均化處理必須絕對地在此最終冷軋步驟之前進行。如 果其並非如此，結構被破壞及造成顆粒變粗。 在薄片上結朿均化處理時，前者或由其形成之冷軋片特 徵爲鎳低於0·4%或甚至0 35%之”標準凝析程度”。在均化 處理僅在冷軋片上芜成時，僅後者特徵爲鎳低於〇 4%或 甚至0.35%之"標準凝析程度"。 在依照本發明之冷軋由主要含35%至37%之鎳之低膨脹 係數合金製成時’其保磁場He在其已在75〇»c退火15分鐘 後低於45 A/m。在冷軋片爲主要含3 2 %:至3 4 %之鎳及 3.5 %至6.5 %之鈷之低膨脹係數合金製成時，其保磁場η c 在其已在7S0C退火15分鐘後低於55 A/m。 -8 ** ___—____________ 本紙K尺度適用屮函( C'NS ) /\4規格（2丨0 X 297公勢） -----^----1 裝------訂------Φ (谙先閱讀背面之注意事項再填寫本頁) 赶·："部—Ί,次-^ί?·^ρ 工消贽合竹"印；^ Μ Β7 416373 五、發明説明（6 藉實例之方式，使用含36%之鎳與〇 3 %之錳’其餘爲 鐵及由举練操作生成之雜質之合金，完成兩個直接薄片鑄 製TSCC3與TSCC2及兩個錠塊鑄製IC1與IC2間之比 較。 由這些鑄製製造具有〇_12毫米厚度之冷乾片及在750。〇 與850°C退火。 得自鑄製1C 1與^2之錠塊首先熱軋以得到厚度3毫米 之熱片，其然後已冷乾成最終厚度。藉比較之方式，如此 得到冷片IS1與IS2。 — 直接薄片鑄製得到之薄片具有3毫米之厚度及用以製造 以下許多冷軋片； -藉比較之方式’TS3C與TS2C，其直接藉冷祝得到， -依照本發明TS川、TS3I2、TS3n、TS2I1與TS2I2，其除 了冷軋亦接受均化處理。 均化處理爲： -TSjII:溫度在1150C保持3〇分鐘， -TS3I2 :溫度在1250°C保持3 〇分鐘， -TS3I3:溫度在1200°C保持2〇分鐘 軋步驟，及 -TS2I2 :溫度在1250 C保持3 〇分鐘 軋步驟。 在如此得到之所有冷乾片上，測量鎳之”,標準凝析程度 5犯’保磁場H c與導磁性w ,。 ^ ni9x.dc 結果如下： 9- 本紙伕尺度適州中國囤家標净（（’NS ) Λ4規格（2丨〇_χ 297公资〉 ^----t------IT------.¾ (靖先閱讀背面之注意事項再填寫本頁) ' 繼而5 0 %減少之冷 繼而3 5 %減少之熱 416373 A7 B7 五、 發明説明（7) /1____________ H - 在750°C退火 —' 在 -- σ Ni He max,dc He // max，dc (%) (A/m') (A/m) IS] 0.30 34.2 9300 26.3 11800 __IS2 0.32 39.0 5400 28.2 6400 . TS3C 0.54 64.6 3200 52.2 3700 TS2C 0.75 68.3 3200 56.7 3600 __TS3I1 0.39 43.4 5200 38.2 5500 TS3I2 0.38 44.6 5400 34.5 6400 __1_S3I3 0.36 43.2 5100 36.2 5700 TS2I2 0.32 39.4 6200 30.0 7600 CS1 0.30 33.9 i 9700 25.8 12100 這些結果顯示’一方面，藉由直接由連續鑄製薄片製造 冷片而不進行任何均化處理，在75〇»C丨5分鐘之熱處理後 無法得到低於5 Ο Α/τη之保磁場’如由旋塊形成之片上得到 而無困難。然而’在由連續鑄製薄片形成之冷軋片之製造 以使鎳凝析低於〇，4 %之均化處理完成時，得到低於4 5 A / m之保磁場。 此外，依照本發明之片具有〇 99 χ 1〇-Si2(rc至1〇(^膨 張係數’ 9之粒度Gaf職，{1〇〇}<〇〇1>立方材質，及極 密度1 /1 0 = 5，及材質在75〇。(；丨5分鐘之再 爲各向同性。 -10 本紙浓尺度適;彳〗中SKU:標嗥（ΓΝί5) Λ4現格（2丨0>< 297公釐） ---^--I-----^------.II------漆 f請先閲讀背面之注意事項再填筠本頁，} 結晶熱處理後Σ ^ xpi. {38000 / (T. + 273)) j > A (A is greater than 0.5 x 12 and preferably greater than 1 x 12). These conditions correspond, for example, to 1150 for a 3 mm thick sheet (directly obtained by continuous casting of the sheet). (: 0.5 hours or at a temperature of 120,000 to 10 minutes a) Although the thinner the product, the homogenization treatment of the product is more effective and easier to implement, especially in the final cold rolling of the cold sheet intended to produce a specific In terms of particle size and material, the homogenization process must be performed absolutely before this final cold rolling step. If it is not the case, the structure is damaged and the particles become coarse. During the homogenization process on the sheet, the former or formed by it The cold rolled sheet is characterized by a "standard degree of coagulation" of nickel below 0.4% or even 0 35%. When the homogenization process is only formed on the cold rolled sheet, only the latter is characterized by nickel below 0.4% or even &Quot; Standard degree of coagulation " of 0.35%. When the cold rolling according to the present invention is made of a low expansion coefficient alloy containing mainly 35% to 37% nickel, its magnetic field He is at 75 ° C. After annealing for 15 minutes, it is lower than 45 A / m. When the cold-rolled sheet is made of a low expansion coefficient alloy mainly containing 32% to 34% nickel and 3.5% to 6.5% cobalt, its coercive field η c After it has been annealed at 7S0C for 15 minutes, it is lower than 55 A / m. -8 ** ___—____________ This paper is applicable to the letter K (C'NS) / \ 4Specifications (2 丨 0 X 297 public potential) ----- ^ ---- 1 Pack -------- Order ------ Φ (谙 Read the precautions on the back before filling in this Page) Hurry: " 部 —Ί, 次-^ ί? · ^ Ρ 工 消 贽 合 竹 "印; ^ Β7 416373 V. Description of the invention (6 By way of example, use 36% nickel and 〇3% of manganese 'The rest is iron and alloys of impurities generated by the drill operation, complete the comparison between two direct sheet casting TSCC3 and TSCC2 and two ingot casting IC1 and IC2. Manufactured by these castings has 〇_12 mm thick cold-dried sheet and annealed at 750 ° and 850 ° C. The ingots obtained from the cast 1C 1 and ^ 2 were first hot rolled to obtain a 3 mm thick hot sheet, which was then cold-dried into The final thickness. By comparison, the cold plates IS1 and IS2 are thus obtained. — The flakes obtained by direct sheet casting have a thickness of 3 mm and are used to produce many cold-rolled sheets as follows:-By way of comparison, 'TS3C and TS2C, which Obtained directly by cold wishes,-According to the present invention, TS Chuan, TS3I2, TS3n, TS2I1, and TS2I2, in addition to cold rolling, also undergo a homogenization process. The homogenization process is:-TSjII: The temperature is maintained at 1150C for 30 minutes. -TS3I2: temperature is maintained at 1250 ° C for 30 minutes, -TS3I3: temperature is maintained at 1200 ° C for 20 minutes rolling step, and -TS2I2: temperature is maintained at 1250C for 30 minutes rolling step. All cold obtained in this way On a dry slice, measure the nickel ", the standard degree of condensing is 5 guilty of" coercive field Hc and magnetic permeability w. " ^ ni9x.dc The results are as follows: 9- This paper is in the standard of Shizhou China, and it is standard (('NS) Λ4 specification (2 丨 〇_χ 297 public capital) ^ ---- t ------ IT- -----. ¾ (Jing first read the precautions on the back and then fill out this page) '' followed by 50% reduction of cold followed by 35% reduction of heat 416373 A7 B7 V. Description of the invention (7) / 1 ____________ H-in Annealing at 750 ° C-'at-σ Ni He max, dc He // max, dc (%) (A / m') (A / m) IS] 0.30 34.2 9300 26.3 11800 __IS2 0.32 39.0 5400 28.2 6400. TS3C 0.54 64.6 3200 52.2 3700 TS2C 0.75 68.3 3200 56.7 3600 __TS3I1 0.39 43.4 5200 38.2 5500 TS3I2 0.38 44.6 5400 34.5 6400 __1_S3I3 0.36 43.2 5100 36.2 5700 TS2I2 0.32 39.4 6200 30.0 7600 CS1 0.30 33.9 i 9700 25.8 showing these results Cold sheet is produced directly from continuous cast sheet without any homogenization treatment. After 5 minutes of heat treatment at 75 ° C, it is not possible to obtain a coercive field of less than 5 0 A / τη. Without difficulty. However, 'in the manufacture of cold-rolled slabs formed from continuously cast slabs, When the homogenization treatment of 4% is completed, a coercive field of less than 4 5 A / m is obtained. In addition, the sheet according to the present invention has 0 99 χ 10-Si2 (rc to 10 (^ expansion coefficient of 9) Granularity Gaf post, {1〇〇} < 〇〇1 > cubic material, and extremely dense 1/1 10 = 5, and the material is 75. (; 5 minutes later is isotropic. -10 paper thick The scale is appropriate; 彳〗 SKU: standard 嗥 (ΓΝί5) Λ4 is present (2 丨 0 > < 297 mm) --- ^-I ----- ^ ------. II-- ---- Paint f Please read the precautions on the back before filling in this page.} After crystallization heat treatment