TWI229035B - A steel plate and a hot-dip galvanized steel plate having superior electric and magnetic shielding property - Google Patents
A steel plate and a hot-dip galvanized steel plate having superior electric and magnetic shielding property Download PDFInfo
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- TWI229035B TWI229035B TW91111955A TW91111955A TWI229035B TW I229035 B TWI229035 B TW I229035B TW 91111955 A TW91111955 A TW 91111955A TW 91111955 A TW91111955 A TW 91111955A TW I229035 B TWI229035 B TW I229035B
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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
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/06—Aluminium; Calcium; Magnesium; Compounds thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
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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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
- C23C2/0224—Two or more thermal pretreatments
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- 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
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- C23C2/024—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
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- C—CHEMISTRY; METALLURGY
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- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
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- 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
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
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- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
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- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
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- 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
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- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
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- 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
- C21D8/1277—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular surface treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
1229035 案號 91111955 年 修正 五、發明說明(1) <技術領域> 本發明係關於電、磁遮蔽鐵板及熱浸鋼板而可用於結 構及電氣、電子器具,像結構面板、電子器具的外殼、電 力傳輸線用面板等等。尤其是本發明關於鋼板及熱浸鍍鋅 鋼板,在60Hz之電磁場中,具有遮蔽效應25dB(遮蔽效率 95%)或更高,降伏強度18〜25kg/mm2,及伸長為40%或更 高0 <背景技術> 甚多自然現象及人造電 電磁能。這些波電振盪電及 植物、動物、或人類等生物 對於人體有害,因而導致發 地影響人體的各種波統稱為 最近的研究已經證實, 害效應。尤其是,一系列的 線的電磁場(6 0 Hz )與癌的發 大的回響。 器設備會產生成電磁波形態的 磁場所組成,而與例如細胞、 系統互相作用。己發現電磁波 展各種遮蔽方法及材料。不利 有害波。 低頻之電磁波對生物系統有傷 研究結果洩露出環繞電力輸送 生有相互關係己在全世界造成 除了致癌效應外,對於長時# 頻波會對人體引起電流,因而“路在具有磁特性的低 子,例如Na+、K+、Cl-等等,的生^、、田,胞膜破壞了不同離 荷爾蒙分泌及免疫細胞的不利的影勿^衡,結果導致對人楚 此外,其他的各種研究顯示^場嚇认、、、 (一種負責規律睡眠循環的荷爾拉 、/;褪黑激素分泌 曝露於磁場可能蒙受失眠症之宝。的〜響,故人體在長期
1229035
甚多® = t法律回應因電磁場對人體健康不利的效應,在 電磁;:技ί立法降低由各種電氣或電磁器具所發射出的 矜電二1 /广的位準。此外,關於電磁波的規定被用於阻 電磁器具的輸入。例如,瑞典及其他歐洲國 卞因入磁洩漏為2mG或更高的電視機或電腦監視管。 之瞧露阡—r在韓國制定法律’藉由頻率波帶規定電及磁場 i% if ^ ^ ^ _ r ' 卜有一法律通報,電磁波被認為 衣=源(韓國環境部公告第2〇〇ι—7?號)。 ' 點來發展:結構及材二 波,k蔽技術己分成兩種觀 國專利6,282 848及B 結構觀點,磁遮蔽空間在美 示。例如銅電氣導利公開公報平7 —32136己有揭 示在日太直y、辠電材料目前使用當做遮蔽電磁波,其揭 頻(=更 由電場及J常在-般電源之所觀察到者’昃 為了遮蔽這些低兩者皆隨時間而改變。因此’ 果),時變雷另^ θ電磁波(最近已證明對健康有不利的效 際有用的鋼板"場應刻一起考慮。然而,尚未發展出實 習慣上,有效地遮蔽時變電磁場。 如日本專利公,^ ^有高導磁率的鋼板當作電磁遮蔽。例 97/ 1 1 204 揭示 報平1〇 —208670 及平10 —96〇67 及 PCT W0 色影像管,^ 緊心磁場遮蔽鋼板,可使用在例如T V的彩 防止在影像管上彩色調變的目的。使用此
第15頁 1229035
案號 91111955 五、發明說明(3) 等鋼板,以便可利用它們在如地球磁場之靜態磁場下的保 磁力及導磁率,但不能對付時變磁及電場。因此, 辆 板與電磁波遮蔽全然不同。 # ^ @ 因為場合的需要,結構材料需要不允許電磁波之透 過。關於此方面,矽鋼熱軋厚板被建議用在電磁波遮蔽結 構’如揭不在日本專利公開公報2 〇 〇丨—丨〇 72 〇丨及 20 0 1 - 1 0 7202。然而,這些結構材料僅利用矽鋼板在靜態 磁場下的高導磁率,但對於電場的遮蔽效果則沒有揭示u。 此外,這些鋼板因為不是冷軋鋼而是熱軋鋼,對於成形及 電鍵(鍵辞被覆特性)甚劣。 此外,本案發明人在韓國專利申請案第1 999_52〇18號 j不一種鋼材料在低頻時具有優異的磁遮蔽效果。遮蔽能 里為一理淪質,其係由在靜態磁場下所量測的導磁率及導 電率而得到者,因此與實際值不@,在實際應用上有其困 難性。,此,需要作在時變磁場情況下之評估。 為符合此種需要,用於依照頻率評估鋼板的磁遮蔽能 力的方法己發展出來(韓國專利第2〇〇〇_7999〇7號及2〇〇〇_ 80886號),目前正在使用中。 代表II者,一鋼板的遮蔽效率可由下列方程式獲得·· 方程式1 所施加磁場〜輻射磁場 磁遮蔽效率=-------------—-------xl00 方程式2 所施加磁場
__案號 91111955 年 月 日 1229035 修正 五、發明說明(4) 所施加電場一輻射電場 電遮蔽效率---------------------—X 100 所施加電場 到: 方程式 以dB表示單位,鋼板的遮蔽效應可由下列方程式得 輻射磁場 磁遮蔽效應=-2 0 1 〇 g 方程式4 所施加磁場 輻射電場 電遮蔽效應= -201og----------- 所施加電場 依照這些方程式,具有遮蔽效率9〇%(電磁波衰減至 十分之一)的遮蔽材料的遮蔽效應可表為2〇心。遮蔽效率 5 %(電磁波衰減至二十分之一)對應於約26"的遮蔽效 應。 本案發明人之韓國專利申請案第20 0 0_81 056為基於電 :遮蔽冷軋鋼板的生物波鋼才反,在其上被覆有輻射遠紅外 輻射粉末。為了改進對時變磁場的遮蔽效應,#是在時 磁場下獲得高導磁率,用以遮蔽電磁波的生物波鋼板含 有碳0.02%或更少及Si量為〇. 5〜3. 5%。 含有碳量0. 02 %或更少的冷軋鋼板,雖 磁遮蔽效應,發現%瘠T 7土. e e m^ ^ %
有低的應變及低的碳析 要適當強度的結構及傢 變粗,以及由於減少礙固溶體而 出。因此,此種鋼板不適用於需 具0 具 效應, 強及成 構及家 疊以便 構的表 材料Ϊ 一般的 特別的 理由, 料。 有矽含 但只有 形性甚 用器具 用在磁 面上以 例如鋅 冷軋方 爐内在 矽鋼板 …π Μ哕綱板 遮蔽電場不良。特別地 差(伸長40 %或更少), ,蓋其等需要材料成形 芯的情況,一種電氣絕 便最小化渦流損失。因 ’鍍敷在石夕鋼上。此外 法(在退火溫度9 0 〇 °c或 高溫(高於9 〇 〇。〇)生產: 不適於當作結構及家用 顯示了優越的磁遮蔽 ,此種矽鋼板強度太 故它們甚難應用至結 性。在矽鋼板予以層 緣材料被覆在層疊結 此,不可能以耐腐蝕 ,因為矽鋼板不是以 更少)生產,而是在 故價昂。因為這些 電子器具的面板材 就使用方、外部ί衣境而言’如結構外部光製,矽鋼板必 腐蝕;關於此方面,以耐腐蝕材料在此種外部光製上 行作熱鍍鋅。按照本發明人的實驗,矽鋼板在除去電 絕緣材料後,以熱浸鍍以鋅,由於矽的存在,矽鋼板不容 易被覆。 <本發明的揭示> ★經由徹底及精深的研究適用於結構及電子器具之電磁 遮蔽鋼板’導致於發現填隙元素c、N及3以及添加元素 Si、A1、Μη及P對電磁遮蔽效應及鋼板的強度有甚大的影 響,及添加元素與鋼板的熱浸鍍鋅有關連性。
第18頁 j號9111舰 1229035 修正 曰 五、發明說明(6) 因此’本發明的一目的為克服上述在習知技術所遭遇 的問題及提供一種鋼板及一種熱浸鍍鋅鋼板,其可顯示: 基於1mm厚度的板,對於在6〇1^的時變電磁波,遮蔽效應 為26dB(遮蔽效率95%)或更高;降伏強度為a〜 25kg/mm2 ’及伸長為4〇 %或更高。 按照本發明的一觀點,提供一種具有電磁遮蔽效應的 鋼板,其由包括:C、N及S總量為〇 · 〇 1 5 0 %重量或更少; Μη含量為〇·1至1.0%重量;si含量為0·5%重量或更少; Α1含量為1.0%或更少;Ρ含量為〇 〇6%重量或更少;及餘 量為Fe及不可避免而呈現的元素所製成。 按照本發明的另一觀點,提供一種具有高電磁遮蔽性 能及降伏強度的熱浸鍵辞鋼板,其由包括:C、n及§總量 為〇· 0150 %重量或更少;Mn含量為〇· 2至〇· 8 %重量;人 量為0.6%重量或更少,Si含量為〇·4%或更少;p含量為 0 · 0 6 %重量或更少,附有條件為μ n、a 1、S i及P之和為q' 2 〜1.1%重量;及餘量為Fe及不可避免而呈現的元素所製 成。 <實行本發明的最佳模式> 本發明屬於可抗電及磁場的鋼板遮蔽。磁場係由 產生,而電場由電壓所引起。在低頻時,電磁波 :兔 磁成分。為了使用當做電磁遮蔽,一材料必須衰 電及磁成分。 、、、敗 一材料在低頻率抵抗磁場的磁遮蔽效應内改變磁通 及使滿流指失的能力來決定。在此’改變磁通路意謂當一
1229035 θ -—---Μ 91Π1955 修正 五、發明說明(7) 有害的磁場射到一遮蔽材料時, 表面產生,如此磁場不會引:犯〜過的路徑在材料 導至其他地方而清失。在此,渴=二的内部,但被引 蔽材料,成波形態的磁場在遮表*,當射到-遮 方向循環著的表面以將磁場清失的 益處。此外,的材料在改變磁通路比較有 料的電導電性及導磁率 、渦流知通常隨同增加遮蔽材 率及電導電性:鋼導:ί:::異:=,具有高導磁 如此。為了防止一遮蔽空間内誘發二電=流動亦是 j,具有高體積電導電性的材料】作。遮η 為較高電導電性在防止產生電位差以;:電遮蔽者,因 2案發明人所作的在時變電場,例如電磁波驗 製備樣品甚為繁雜泛力、二ΐ導電杜及磁導磁率。此外, 誤差。《為$雜至在測量導電性及導磁率會產生甚大的 在本發明中,鋼板被測量抵抗磁及電場的遮蔽效應。 ^此,低頻磁場效應藉由使用在時變磁場情況下=磁 f蔽效應的設備(韓國專利第20 00- 79 97及2 00 0 -80886 )來 Mi關方'抵k日^變電場的遮蔽效應’是藉由電場強度的 =例來决定。電場強度係在一遮蔽空間内,在有遮蔽材料 及沒有遮蔽材料的情況下,使用一6〇11:2之12〇〇 ^〖。^電 壓源,位在遮蔽屋外所量測而得者。 1229035 案號 91111955 月 曰 修正 五、發明說明(8) 鋼板除了 F e外可以包含不同的成分。通常加到鐵磁性 F e以改善鋼板的強度及耐腐性的合金元素,影響鋼板在時 變磁場(60Hz)的最大導磁率及電導電性。此外,導磁率及 電導電性隨鋼板之碳含量及晶粒大小而改善。當然,鋼板 依據組成物顯示不同的機械特性,蓋改變強化機構,例如 固溶硬化,晶粒大小再微化等等。 按照本發明,提供了一種鋼板,其具有適當的強度可 使用在結構及傢俱面板’即言降伏強度為1 8〜2 5 k g / m m2, 及電磁遮蔽能力95 %(26dB)或更高。經由本案發明人等所 做的徹底及精確的實驗,其中鋼板的組成分予以改變而測 量電磁遮蔽效應及機械強,在決定鋼板的電磁遮蔽效應及 強度時每一成分的角色予以定義出。特別地,C、N、S、 S i、A 1、Μη及P被發現對鋼板的電磁遮蔽效應機械強度有 甚大的影響。基於實驗的結果,可得到最佳化鋼鐵組成 分。 另外的實驗導致發現添加元素,例如Si、Α1及Μη的含 量與鋼板的熱浸鍵鋅有關,因而導致一種鋼組成物對於熱 浸鍍以及遮蔽效應及強度特別優越。 總而言之,一種鋼板的電磁遮蔽效應大大地依填隙元 素,例如C、Ν及S,或能形成析出的元素之含量而定。例 如,鋼的内應變隨C、Ν及S的含量而增加,及由於應變硬 化而增加強度。此外,填隙元素C、Ν及S析出分別成為 Fe3C、Α1Ν及MnS的形態,因此增加了鋼的強度。 然而,增加的應變及所形成之沉澱提高了鋼在導磁率
第21頁 1229035 案號 91111955 年月日 絛正 五、發明說明(9) 及電導電性的大大減少,因此變壞了鋼的遮蔽性能。事實 上,僅使用這些填隙元素很難提供鋼具有一適當的強度及 遮蔽率95 %或更高。 按照本發明,C、N及S對鋼板的電磁遮蔽性能有不利 的影響,故在鋼的組成中其和被限定至〇 · 〇 1 5 %重量。 較佳地’C及N母一者含罝為0.0030%或較少,然而§ 的含量被控制0 · 0 0 9 0 %,如此確保鋼具有電磁遮蔽能力及 機械成形性。 變弱 元素 加以 因引 應。 在填隙元素C、N及S以上述含量使用的場合,鋼強度 。為了補償由最小填隙元素引起的弱強度,需要其他 以引起此種固溶液硬化而增加鋼的強度。然而,必須 限定使用於改良強度的元素之含量及種類,以免它們 起太大的減少導磁率及電導性因而削弱了電磁遮蔽效 強包含在本發明之鋼才反。增加Si含量可能增加鋼的 二二二能減少磁遮蔽能力。尤其《,鋼板的砂含量多 常不Λ Λ將大、大減長性以及在磁遮蔽… 磁γ = 3八不適用方;虽做使用於結構及家用電子器具的 二:因為它們必須有足夠的機械成形性。因 高Sii量重量。通常,具有較 蔽嗖岸。: 較高的導礤率,因此有較佳的磁遮 政效應。然而,這些效應在本 J確遮 本發明的鋼板為依照傳統冷軋、’ 2 ,因為 製程,其為通常㈣板特有㈣,沒有經歷熱退火
案说 9111195Ρί 1229035 修正 曰 五、發明說明(1〇) A 1亦包含在本發明的鋼板。a 1改善了鋼的強度而不會 抵抗磁及電場的遮蔽效應的顯著減少。在本發明的鋼板中 A1的含量高至1.0%重量。A1多於1()%重量升高了抵抗磁 及電場遮蔽能力大大的減少,限定鋼板的伸長至少於 40 % 〇 在電磁遮蔽效應及機械性質方面,A丨所顯示的行為類 同於S 1。在兩元素間對於鋼板導磁率及導電性以及增強機 構的影響,相信係訴諸於兩元素的相似性,故有相同的行 為。 本發明的鋼板亦包含Μ η。即使當鋼板包含有很多Μ η 時’鋼板的電場遮蔽能力亦沒有改變,因為此元素並不影 響鋼板的電導性。然而,鋼板的機械性質及磁遮蔽效應隨 Μη的含量大大地改變。 Μη含量至〇·1%重量,除了保證適當強度外(降伏強度 (18kg/mm2),Μη通常有利於磁遮蔽效應(26dB或更高)及伸 長(40%或更高)。然而,Μη加入多於1。〇%重量,磁遮蔽 效應並不進一步改善,至於伸長,在Μη多於1.0%重量反 而減少。考慮這些效應,Μη使用在0. 1至1. 〇 %重量。 雖然Ρ的作用增強鋼,但Ρ在少於0. 06 %重量並不顯著 地影響電及磁遮蔽效應。當Ρ含量多於〇. 0 6 %重量,鋼板 不正常增加強度至2 5kg/mm2或更高,然而遮蔽效應變劣。 因此,P在本發明鋼板内的含量被限定少於0 · 0 6 %重量。 除了在鋼板製造期間不可避免所呈現的元素外’其他 元素,例如T i、V及N b ’較佳地自本發明鋼板予以排除
第23頁 一案號 91111955 1229035
五、發明說明(11) ^,因為它們除了大大地劣化底頻磁遮蔽性能外, :::化’因Λ ’本發明的鋼板較佳地盡可能排除那此使 拉度減小的元素。 | —從 為了提供包括上述組成物之鋼板的耐腐蝕,鋼板可 、泠::f。例士口’被覆予鋅層能展示如一裸鋼板的相同電磁 &蔽效應。其理由為辞被覆非常薄而幾乎沒有磁性質。 為了改變此種組成之冷軋鋼板的耐腐蝕性,鋼板 鋅或鋁作熱浸鍍。 州极了以 因為Si、A1及Μη對於鋼板的熱浸鍍鋅有大的影 =鋼板本身遭受至熱浸鍍辞,鍍辞缺點可能發生了因此假 按照本發明,提供一種熱浸鍍鋅鋼板,它的各元素 佳化控制以防止鍍鋅缺點的發生。 ” 敢 為了保證鋼板的熱浸鍵辞 量或更少。假如呈現於其内的 冷軋鋼板表面之形成Si〇2而氧 性。Si在0.2〜0.4%重量,鋼 黑表面,其與鍍鋅缺點不同。 壓輥製程予以解決◦在此表皮 予滾製,其是在成品製造的最 鋼板的形狀及粗綠度。因此, 或更少以便在熱浸鍍辞後不進 者0 ,S i較佳地含量為〇 · 4 %重 量太多,Si馬上被氧化,在 化物不利地影響了被覆 板在熱浸鍍辞後呈現幾分的 此種問題可經由其後的表皮 壓輥意謂在一非常低負荷下 後階段予以處理,以便控制 限制S i的含量為〇 · 2 %重量 行此額外的表皮壓輥為較佳 以熱浸鍍鋅鋼板的觀點,較佳地,鋼板之“含量為 • 6%重篁或更少為較佳者。人丨含量超過〇.6%重量將使用 鋼牙反白"皮m降低,因此使得鍍覆有缺點。在A1含量 1229035 案號 91111955 五、發明說明(12) 年月日 倏ϊί 〕· 4〜〇· 6 %重量之鋼板的熱浸鍍鋅可看到少微的缺點,但 可在熱浸鍍辞製程後之表皮壓輥製程予以除去。因此,省 略此種額外的、隨後的表皮壓親(如此較佳)需要限定A 1含 量為0.4%重量或更少。 關於Μη含量,較佳地定義在〇 · 2至〇 · 8重量的範圍。例 如’當使用不少的Μη,對於保證鋼板的強度至一適當位準 有其困難。另一方面,Μη超過〇· 8 %重量則易於在熱浸鍍 鋅上造成缺點。 按照本發明,Mn、S i、A 1及Ρ之和落在鋼板重量〇 · 2至 1.0%重量之範圍内。當Mn、Si、A1及P之和低於〇·2%重 置’鋼板的強度僅能增加至1 5 k g / m m2。鋼板含有μ η、S i、 A 1及P總和在多於1 %重量有顯然的不良磁遮蔽性及蒙受熱 浸鍍鋅缺點的發生。 ^ 在熱浸鍍鋅性能的觀點,其他組成元素p、C、ν及S的 含量亦作以上定義。 如上所述’精由控制額外之元素的含量,能夠有效地 製造具有優越電磁遮蔽效應及熱浸鍍鋅性能的熱浸鍍鋅鋼 板。 按照本發明,鋼板可被覆一有機樹脂層以便在鋼板上 表現顏色。在被覆一含有顏料的有機樹脂,例如聚乙稀或 丙稀、鋼板,稱為PCM(pre-coated metal)鋼板,保持電 磁遮蔽能力及機械性質,正如前述者,不僅因為含在樹脂 内的顏料’而且亦因被覆厚度薄如2 5 // m。 按照本發明,遠紅外線照射之照射效率〇 · 9或更高為
第25頁 1229035 9Π11955 年月日 傢不 五、發明說明〇3) --之 發射率,可在鋼板之電鍍或熱浸鍍鋅被覆層上形 6 0 “ m的厚度。較佳地,此遠紅外線照射發射粉末至 面積比為lm2/g或更高及包含17—99 %的“(〇11\。 表 已經概括地描述本發明,進一步的了解可夂昭 定範例而獲得,而這些範例僅在作為揭示目的,二^ ^特 聲明並非意欲作為限定之用。 ’于、特別 例1
為了檢查填隙元素N、C及S在電磁遮蔽能力上的效 應,具有不同組成物的鋼板,以如表1所示的不同N、c及^ 予以製成,及各種鋼的組成物在真空下熔解。在表丨中, Ir 〃意謂沒有添加元素。 ’ 藉助於電磁遮蔽效應分析器,每一冷軋鋼板在6〇1^測 量電磁遮蔽效應’其結果示於如下的表1。此外,鋼板的 機械性質’例如降伏強度及伸長藉由使用萬用測試機予以 量測,並綜合於表1。 表1 組成物 號碼 成分(Wt°/〇) 磁遮蔽 (dB) 電遮蔽 CdB) 降伏強度 (kg/mm2) 伸長 (°/〇) C N S Si A1 Mn C. 1 0.0025 0.0015 0.0080 Tr Tr Tr 28.3 41.4 14.8 51 C.2 0.0100 0. 0030 0. 0080 Tr Tr Tr 16.2 40.4 22.1 43 C.3 0.0025 0.0080 0.0080 Tr Tr Tr 21.3 41.0 20.8 42 1 0. 0020 0. 0020 0. 0080 0.2 Tr 0.2 27.9 40.1 22.3 43 2 0.0025 0.0025 0.0090 0. 1 Tr 0.1 27.7 40.1 18.7 46 C.4 0.0020 0. 0020 0.0160 0.2 Tr 0.2 23.9 40.1 25.1 39 C. 5 0.0030 0.0080 0.0100 0.2 Tr 12 22.2 39.9 25.3 38 C.6 0.0100* 0. 0025 0.0080 0.2 Tr 0.2 15.4 39.8 27.2 3丁
第26頁 1229035 案號 91111955 年 月 曰 修正 五、發明說明(14) 由表1清楚可知,本發明之鋼板(組成物號碼1及2), 每一者維持C、N及S總和在〇. 〇 1 5 〇 %重量以下及分別含有 適量的Si及Μη,顯示優異的電及磁遮蔽效應,兩種組成物 發現大於2 6dB(遮蔽效率95 %),及降伏強度高於 18kg/mm2。它們的機械成形依伸長方式(高於40 %)為優越 者。 相反地,比較組成物號碼1,其N、C及S含量低,電及 磁遮蔽效應優越,但其強度太低以致不適用於本發明。 比較例組成物號碼2至6其N、C及S含量越過本發明上 限,其強度優越,但其磁遮蔽效應甚差,且電遮蔽效應有 顯明的減少。 例2 檢查S i及A 1對鋼板之電磁遮蔽效應及機械性質之影 響。關於此方面,具有不同組成物的鋼板依表2所示的不 同Si及A1含量予以製備,及3Okg的每一種鋼鐵組成物作真 空熔解。在表2中,、、Tr 〃意謂沒有添加元素。 在1 2 50 °C再加熱後,鋼板在90 0 °C予以熱軋,以得到 熱軋鋼板2mm厚。酸洗熱軋鋼板被冷軋至1mm厚,減小 50 %。其後,使用連續的退火模擬器,在8 50 °C執行退火 以生產冷軋鋼板。 藉助於一電磁遮蔽效應分析器,每一冷軋鋼板在60Hz 測量電磁遮蔽效應,其結果顯示在表2。此外,鋼板的機 械性質,如降伏強度及伸長,使用萬用測試機量測而綜合 在表2。
第27頁 !229〇35 案號 91111955_ 五、發明說明(15) 年 修正 表2 組成物 5虎石馬 成分(wt%) 磁遮蔽 (dB) 電遮蔽 (dB) 降伏強度 (kg/mm2) 伸長 (°/〇) C N Si A1 Mn P 3 < 0.003 < 0.003 0.2 Tr 0.2 Tr 27.9 40.1 22.3 43 4 < 0.003 < 0.003 0.4 Tr 0.2 Tr 26.8 38.4 24.8 41 C. 7 < 0.003 < 0.003 0.6 Tr 0.2 Tr 25.5 37.9 27.5 39 C.8 < 0.003 < 0.003 0.8 Tr 0.2 Tr 22.7 37.9 29.2 36 5 < 0.003 < 0.003 Tr 0.4 0.2 Tr 26.6 39.8 21.4 45 6 < 0.003 < 0.003 Tr 0.8 0.2 Tr 26.1 38.6 21.2 43 C. 9 < 0.003 < 0.003 Tr 1.2 0.2 Tr 25.4 37.5 24.5 38 C. 10 < 0.003 < 0.003 Tr 1.6 0.2 Tr 24.1 36.7 26.2 36 如表2所示,組成物號碼3至6的鋼板’其含有如本發 明C、N及S的和之範圍及適量的S i及A 1,表現優越的電及 場遮蔽效應,兩者多於26 dB(遮蔽效率95 %),及降伏強度 向於18kg/mm2。它們的成形性依據伸長(高於4〇 %)為優良 者。
相反地,比較例組成物號碼7及8,其S i含量超過 、· 5 % ’大大地減少了伸長及磁遮蔽效應。因此,它們不 適於當做磁場遮蔽面板使用在結構及家用電氣器具。 比較例號碼9及10它們的A1含量超過1· 〇 %,雖然強度 改善,但電及磁場遮蔽效應低,及顯示少於4〇 %的伸
第28頁 1229035
9irilQRR 月 曰 五、發明說明(16) 例3 製備具有不同組成物的鋼板,在表3中顯示了不同的 Μη及P含量。30kg的每一種鋼板組成物予以真空熔在 表3中、、丁r "意謂沒有添加元素。 在1 250 °C再加熱後,鋼板在9〇〇 〇c予以熱軋,以得至 熱軋鋼板2mm厚。鋼板藉由酸洗除去熱軋鱗片,接著冷軋 =酸洗的熱軋鋼板至lmm厚,減少了5〇%。其後,使用連 續的退火摸擬器,在850。(:執行退火以生產出冷軋鋼板。 藉助於一電磁遮蔽效應分析器,每一冷軋鋼板在6〇Hz j戛電磁遮蔽效應,其結果顯示在表3。此外,鋼板的機 二性質,例如降伏強度及伸長,使用萬用測試機量測而綜 合在表3。
』碼 /刀'wr/〇j 磁遮蔽 (dB) 電遮蔽 (dB) 降伏強度 (kg/mm2) 伸長 (°/〇) C N Si A1 Mn P 7 < 0.003 < 0.003 0.2 Tr 0.1 Tr 27. 3 40.1 23.5 41 < 0.003 < 0.003 0.2 Tr 0.3 Tr 27· 7I 40.0 21.8 45 」 < 0.003 < 0.003 0.2 Tr 0.5 Tr 27. 9 40.0 19.5 48 10 < 0.003 < 0.003 0.2 Tr 0.7 J;r 26· 0 39.9 21.3 ίΓ C. 11 < 0.003 < 0.003 0.2 Tr 〇.? —Tr 24. 7 39.9 23.5 4T —11 < 0. 003 < 0.003 Tr Tr 〇.T Tr 26. 6 40.3 21.4 45 」2 < 0.003 < 0.003 Tr Tr 0.9 Tr 26.1 40.1 23.1 41 C. 12 < 0.003 < 0.003 Tr Tr 1.1 Tr 25.4 40.1 25.2 ίΓ 」3 < 0.003 < 0.003 0.3 0.3 IT 26. 2 38.5 24.1 42 14 < 0.003 < 0.003 0.3 0.3 0.2 0.04 26.0 38.2 24.7 41 C. 13 < 0.003 < 0.003 0.3 0.3 0.2 0.08 23· 8‘ 38.2 27.3 36 第29頁 1229035 J^91U1955 年月曰_Hi 五、發明說明(17) 如表3所示,組成物號碼7至1 4的鋼板,其含有如本發 明C、N及S的和之範圍及適量的Mn、si及A1,表現優越的 電及磁遮蔽效應,兩者多於26dB(遮蔽效率95%),及降伏 強度高於181^忌/]111112。它們的成形性依據伸長(高於40%)為 優良者。 相反地’比較例組成物號碼丨丨及丨2,其Mn含量超過 0 · 8 % ’顯示了劣的磁遮蔽效應以及依伸長變劣。比較例 號碼1 3 ’ P含量多於〇 · 0 6 %亦不能符合本發明所使用之應 用情況。其原因為不佳的伸長及遮蔽效應。 例4 在依組成物號碼1至3製造的冷軋鋼板上,藉由電鍍摸 擬器’於65°C ’將Zn以镀覆密度l5g/m2電鍍(電解鍍鋅)。 分析顯不鋼板保持如電鍍前的相同電磁遮蔽效應及機械性 月色。其原因為Ζ η被覆層除了如2 · 5 // m薄之外沒有磁性。因 此’本發明的冷軋鋼板具有優越的電磁遮蔽效應及可製造 具有抗腐蝕性。 例5 製備具有不同組成物的鋼板,在表4中顯示了不同的 Si及A1含量,30kg的每一種鋼板組成物予以真空溶解。在 表4中"意謂沒有添加元素。 在1 250 °C再加熱後,鋼板在9〇〇它予以熱軋,以得到 熱軋鋼板2mm厚。鋼板由酸予以酸洗以自其上除去熱軋鱗 片。然後’冷軋經酸洗的熱軋鋼板至丨厚,減少了 50 %。其後,使用連續的退火摸擬器,在85〇 〇c執行退火
Μη 1229035 -f^Jini955 —年月 s 攸 五、發明說明(18) " ' 〜--- 以生產出冷軋鋼板。其後,使用熱浸鍍鋅模 浸鍍鋅至被覆密度為30〇g/m2。 、器用Zn作熱 藉助於一電磁遮蔽效率分析器,每 60Hz測量電磁遮蔽效應,其結果顯示於一錢鋅冷軋鋼板在 的機械性質,如降伏強度及伸長,使用表4。此外,鋼板 綜合在表4。 萬用測試機量測而 藉由裸眼觀看及測試被覆粘著力。 辞鋼板的鍍覆性如為良好狀況,則以、、表4中,熱浸鍍 其後壓輥處理除熱,以、、△,,表示可 ◦々表示;如可為 、、X"表示不可矯正及致命的電鍍缺點正電鍍缺點;而 表4
降伏強度 (kg/mm2) 22.0 熱浸鍍 覆性 〇 24.0 Δ 27.4
X 28.6
X 20.6 〇 21.3 23.3 22· 5 24.1 〇 Δ
X 〇 25.8
X 26.3
X 第31頁
1229035 案號 91111955 4:
五、發明說明(19) 如表4之數據顯然可知,本發明之鋼板(組成物號碼1 至6),每一者維持C、N及S總量在0.0150%重量以下及含 有Μη、Al、Si及P之和為適量,所有組成物在降伏強度及 磁遮蔽能力為優越者,及顯示一般而言良好的鍍覆性。特 別地,關於鍍覆性,當A 1及S i的含量(組成物號碼1、3、4 及6、比組成物號碼2及5)分別控制在〇· 4及0· 2 %以下時為 較好者。 另一方面,比較例組成物號碼1及2Si含量多於0· 4 % 展示不良的鍍覆性,故可看到電鍍缺點。此種現像被認為 由S i所引起,立即被氧化,在鋼板表面形成s丨%。 嚴重的電鍍缺點亦在比較例組成物號碼3中看出,其 中A1含量大於0.6%。 在Mn、Al、Si及P的和超出^ %之情況,即使Mn、Si 及A 1含量分別在本發明所定義之範圍内(比較例組成物4及 5 )’在熱浸鍍鋅之後,依據被覆附著力,鋼板表現了不良 的鍵覆性,且磁遮蔽效應亦減少。 例6 製備具有不同組成物的鋼板,在表5中顯示了不同的 Μη含量。3〇kg的每一種鋼板組成物予以真空熔解。在表5 中、、Tr 〃意謂沒有添加元素。 在1 2 5 0 °C再加熱後,鋼板在9 0 0。(:予以熱軋,以得到 熱軋鋼板2mm厚。熱軋之鋼板以酸洗自鋼板除去熱軋鱗。 其後’經酸洗之熱軋鋼板被冷軋至1 m m厚,減少5 0 %。其 後’使用連續的退火摸擬器’在8 5 0 t執行退火以生產冷
第32頁 年月曰
鋅熱浸鍍鋅至 1229035 ------案號 9111195$ 五、發明說明(20) 軋鋼板;然後,藉由使用熱浸鍵辞摸擬器以 3〇Gg/m2的被覆密度。 鋅冷軋鋼板在 此外,鋼板 藉助於一電磁遮蔽效應分析器,每一鍍 6 0 Η z量測電磁遮蔽效應,其結果顯示在表5。 的機械性質,如降伏強度及伸長,藉由使用萬用測試機量 測而綜合在表5。 在表5中,熱浸鍍 表示,而呈現致命 藉由裸眼觀看及測試被覆粘著力。 鋅鋼板的鍍覆性如為良好,則以、、〇, 電鍍缺失時,以。 ----- 衣 組成物 成 — ±(m) 磁遮蔽 電遮蔽 降伏強度 熱浸鍍 號碼 C N —----- ji A1 Μη (dB) (dB) (kg/mm2) 覆性 7 < 0.003 — 、0·2 Tr 0.2 27.9 40.5 23.5 〇 8 jU)03 ^003^ J.2 Tr 0.4 28.2 40.3 21.8 〇 9 < 0.003 < 0.003 0.2 Tr 0.6 28.3 40.4 19.5 〇 10 < 0.003 < 0.003 0.2 Tr 0.8 26.8 40.3 21.3 〇 C.6 < 0.003 < 0.003 0.2 — Tr 1.0 25.6 40.2 23.5 X 11 < 0.003 < 0.003 Tr Tr 0.2 28.1 40.5 18.1 〇 C.7 < 0.003 < 0.003 Tr Tr Tr 28.4 41.5 14.5 〇
第33頁 案號 91111955 曰 1229035 修正 五、發明說明(21) 由表5之數據顯然可知,含有Μ η在本發明所定義含量 範圍内且Mn、A 1、S i及Ρ的和之旺為1 · 〇 %或更少(組成物 號碼7至1 1 )的鋼板,降伏強度及電磁遮蔽能力皆為優越, 且表現良好的鍵覆值。 相反地,比較例號碼6具有Μη含量多於〇. 8 %及Μη、
Si、A1及Ρ含量的和為ι·〇%或更高,則有嚴重的鍍覆缺 點。另一方面,比較例號碼7雖然遮蔽能力及熱浸鍍鋅性 質優越,但有低的降伏強度,故不適用於作為一般的結構 面板。 產業上的利用性 本發明鋼板依電磁遮蔽能力、強度及加工性而言,甚 為優越’其中填隙元素C、N及S以及添加元素S i、A 1、Μη 及Ρ含量如前所述在受控之含量範圍,而可適用於結構及 電器器具作為電磁場遮蔽面板。
第34頁 1229035 案號 91111955 修正
第35頁
Claims (1)
1229035 案號 91111955 修正 六、申請專利範圍 -- :::0.2〜U%重量;及餘量為卜,及不可避免而呈現 遮歧效應為25dB或更高者。 nmnw旱度π N各二= 圍第7項之熱浸式鍍辞鋼板,其中C及 少各為0.G03%重量或更少,及s含量為Q _㈣重量或更 及人it °月專利範圍第7項之熱浸式鍍辞鋼板,其中A1 ΐ Λ^0·4%或更少’及〇.2%或更少。 鋼二”!專利範圍第7項之熱浸式鍍鋅鋼板,其中當 =為·厚時’電磁遮蔽效應為2_或更高,及降伏強 度為1 8kg/mm2或更高。 ~ 1 ·+如、申明專利範圍第7項之熱浸式鍍鋅鋼板,其中又 包括-有機樹脂被覆在熱浸❹被覆上。 勹4 2. &如/请專利範圍第7項之熱浸式鍍鋅鋼板’其中又 ^括-層遠紅外線輕射發射粉末,在厚度為15〜6〇^時 其紅外線發射係數為〇·9或更高。 含量!卜心G 表面積為1m2/g,及包她⑽)2
第37頁 修正 1229035 摩 補尤 申請案號:91111955 IPC5FU" ㈣丨% 發明專利說明書
(以上各欄由本局填註) 中文 具有優異的電、磁遮蔽特性的鋼板與熱浸式鍍鋅鋼 發明名稱 英文 A STEEL PLATE AND A HOT-DIP GALVANIZED STEEL PLATE HAVING SUPERIOR ELECTRIC AND MAGNETIC SHIELDING PROPERTY 姓名 (中文) 1.李在永 二 姓名 (英文) 1. LEE, Jae Young 發明人 (共8人) 7PT (中英文) 1.南韓KR 住居所 (中文) 1·韓國慶尚北道浦項市南區孝子洞山32(浦項產業科學研究院内) 住居所 (英文) l.c/o Research Institute of Industrial Science&Technology San 32, Hyoja-dong, Nam-ku, Pohang-si, Kyungsangbook-do, Republic of Korea 名稱或 姓名 (中文) 1. POSCO 公司 名稱或 姓名 (英文) 1·POSCO (中英文) 1.南韓KR 申请人 (共2人) 住居所 1.韓國慶尚北道浦項市南區槐東洞1 (本地址與前向貴局申請者不同) /住居所 f業所) (央文) 1.1 Koedong-dong, Nam-ku, Pohang-si, Kyungsangbook-do, Republic of Korea 代表人 (中文) 1.李龜澤 代表人 (英文) l.LEE, Ku Taek 第1頁 91111955 修正 條正 _ - [<if| 钃先 ί 1 · /種具有電磁遮蔽效應之鋼板,其具有降伏強度 18kg/mm2或胃更高’伸長為40 %或更高,其係由括有:C、N 及S之總含量為〇· 01 50 %重量或更少·’ Μη,含量0· 1至 1.0%重量;Si ’含量0·5%重量或更少;Α1,含量1.0% 重量或更少;Ρ含量為〇· 06 %重量或更少;及餘量為以, 及不可避免而呈現的元素的組成物所製成;而當鋼板為 1mm厚度時’電磁遮蔽效應為25dB或更高者。 2 ·如申请專利範圍第1項的鋼板,其中c及n含量各為 0.0030%重量或更少,及S含量為0.0090%重量或更少。 3 ·如申凊專利範圍第1項的鋼板,其中電解鍍鋅被覆 在其上。 4 ·如申晴專利範圍第3項的鋼板,其中電解鍍辞被覆 上包括一有機樹脂被覆。 5 ·如申请專利範圍第3項的鋼板,其中熱電解鍍鋅被 覆由一層遠紅外線輻射發射粉末所覆蓋,此粉末丨5〜 6〇 am厚度具有輻射效率為〇.9。 6 ·如申凊專利範圍第3項的鋼板,其中遠外線輻射發 射粉末的比表面積lm2/g,及包括Mg(〇H)2含量17〜99 % 量。 7 · 種熱次式鍵辞鋼板’具有南電磁遮蔽效應及降伏 強度’及有一抗腐蝕元素被覆在其上,其係由含有:C、N 及S之總含量為〇·〇ι5〇%重量或更少;Μη,含量〇·2至 •8%重量,ΑΙ,含量〇·β%重量或更少;以,含量0.4% 重里或更少,P含量〇·〇6%重量或更少,且Mn、A1、Si及P
第36頁
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