經濟部中央標準局員工消費合作社印製 Λ7 ' __ 五、發明説明（/ ) [技術領域] 本發明關於一種俄使用於彩色映像管（以下引述稱爲 CRT)之蔭罩用恆範合金鋼薄板，一種製造該恆範合金鋼薄 板之方法，一種由上述恆範合金鋼薄板所製得之蔭罩，及 一種併入上述蔭罩之CRT。更特別地，本發明關於由在形 成蔭罩點孔(微小細孔）方面，具有良好可蝕刻性之恆範合 金所組成之蔭罩用鋼薄板，用於製造上述恆範合金鋼薄板 之方法，一種上述之蔭罩，及一種倂入該蔭罩之CRT。 [先前技藝] 經使用一種由恆範合金或鋁脫氧鋼所製成之薄鋼板， 做爲用於CRT之蔭罩用材料。由恆範合金所製成之蔭罩用 薄板，係藉由將恆範合金融解、將熔融恆範合金進行鑄製 、將其進行鍛造及熱輥壓、然後將其酸洗及硏磨以去除銹 皮、接著將其進行冷輥壓及退火等步驟而製得。由此而獲 得之恆範合金薄板藉由使用光蝕刻方法進行穿孔，而形成 點孔，以製得扁平蔭罩。將該扁平蔭罩進行退火、加壓成 爲所希望形狀、及變黑等步驟，然後將其倂入CRT中。 蔭罩係供做爲自電子槍發射出之電子束的陽極，並做 爲虹彩隔片，允許通過點孔之電子束投射於分布在前面板 之螢光塗層的點上。關於後者之角色，該等點孔直接影響 呈現於CRT上之影像鮮明度、不規則色調或不規則亮度， 因此彼等需要極局的尺寸精確度。一個點孔包含：位於面 對陰極面（即面向電子槍）之薄扁平狀蔭罩板表面上的小孔k 直徑部分（以下稱爲小點）、位於面對前面板之蔭罩板另 _'___4_ 本ϋ尺度適用中國國家標準（CNS ) A4規格（2丨0X297公' (請先閱讀背面之注意事項再填寫本頁)Printed by the Consumers 'Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Λ7' __ V. Description of Invention (/) [Technical Field] The present invention relates to a constant-profile alloy steel sheet for shadow masks used in Russia for color picture tubes (hereinafter referred to as CRT). A method for manufacturing the Hengfan alloy steel sheet, a shadow mask prepared from the Hengfan alloy steel sheet, and a CRT incorporated into the shadow mask. More particularly, the present invention relates to a steel sheet for a shadow mask composed of a constant-fan alloy having a good etchability in forming a shadow mask dot hole (a minute fine hole), and a method for manufacturing the above-mentioned constant-fan alloy steel sheet. A shadow mask as described above, and a CRT inserted into the shadow mask. [Previous technique] A thin steel plate made of Hengfan alloy or aluminum deoxidized steel is used as a shadow mask material for CRT. The thin sheet for shadow mask made of Hengfan alloy is removed by removing Hengfan compound, casting the molten Hengfan alloy, forging and hot rolling, and then pickling and honing to remove it. The scale is prepared by cold rolling and annealing. The thus obtained Hengfan alloy sheet was perforated by using a photo-etching method to form a point hole to produce a flat shadow mask. The flat shadow mask is subjected to steps of annealing, pressing into a desired shape, and becoming black, and then being incorporated into a CRT. The shadow mask serves as the anode of the electron beam emitted from the electron gun and serves as an iridescent spacer, allowing the electron beam passing through the dot hole to be projected onto the points of the fluorescent coating distributed on the front panel. Regarding the role of the latter, these point holes directly affect the sharpness, irregular tone or irregular brightness of the image presented on the CRT, so they need extreme dimensional accuracy. A point hole includes: a small hole k diameter portion (hereinafter referred to as a small dot) on the surface of a thin flat mask plate facing the cathode surface (that is, facing the electron gun), and a shadow mask plate facing the front panel. ___4_ This standard applies to China National Standard (CNS) A4 specifications (2 丨 0X297 male '(Please read the precautions on the back before filling this page)
B7 B7 經濟部中央標準局負工消费合作社印製 五、發明説明（工） 一表面上的較大孔直徑部分（以下稱爲大點）、以及小點 與大點互相會合之接合孔部分（穿透孔，以下稱爲Br Th 孔）。虹彩隔片對電子束之作用實質上受此Br Th孔影響 〇 通常，蔭罩用恆範合金鋼薄板具有厚度爲1〇〇至250 微米，而於高淸晰度蔭罩之個案中，兩點孔中心之點距大 約爲250微米。Br Th孔各具有直徑大約爲120微米，且應 具有圓度及均一直徑。而且，嚴格需要該恆範合金薄板具 有經蝕刻之表面，其條件爲以虹彩隔片之作用功能而言， 需要細緻且均勻之表面粗糙度。於是，強烈地需要改善供 餽刻之特徵，亦即，此類蔭罩用恆範合金鋼薄板之可蝕刻 性。 .關於改善恆範合金鋼薄板可蝕刻性之方法，有些用於 減少恆範合金中不可避免的雜質之技術，已於諸如日本專 利特開平-2-51973及先期公開之日本專利案昭-61-190023等 揭示案中提出，其中不可避免的雜質，例如C、0及N之 含量受到限制。事實上，此等經提出之技術對於供形成蔭 罩或等類之高度正確蝕刻技術而言爲必需，但即使僅將該 等不可避免的雜質減少，則仍無法解決所有關於恆範合金 鋼薄板的可蝕刻性之問題。另一方面，關於改善恆範合金 冶金結構之方法，有些技術已於諸如先期公開之日本專利 案平-61-39343、日本專利案特開平2-9655及先期公開之日 本專利案平-6-279946等揭示案中提出，其中係限制晶粒大 小或晶體方向。此等技術目前已廣泛熟知，且亦對改善恆 5 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公您） (請先閲讀背面之注意事項再填寫本頁〕 -訂-- 五、發明説明（i ) — 範合金之可蝕刻度而言爲必需。於多晶材料中，晶粒越細 ，則因晶體方向而於晶粒蝕刻率間發生差異之機會越少， 此能夠使蝕刻率均一。此外’恆範合金具有面心立方晶格 結構’其與鋼材領域中已知作爲不銹鋼合金之沃斯田鐵不 銹鋼的結構類型相同。亦已熟知，於具有面心立方晶格結 構之材料中’在如U11}平面及丨1〇〇丨平面之高原子密度平面 上，較其他平面更易造成均勻蝕刻》 因此’僅將上述先前技藝進行組合，仍不足以提供改 善恆範合金之可蝕刻性，以使其用做爲高淸晰度蔭罩之材 料。另外，工業上製造此等具有細緻且均勻之晶粒結構及 晶體方向結構的恆範合金，在冷輥壓、退火等步驟全程中 ，需要構成高成本的主要因素之複雜調控系統β現今，對 低成本蔭罩有更強烈需求。往後須尋求高等級且低成本之 蔭罩與蔭罩材料。 [本發明欲解決之問題] 本發明之一目的在於提供：一種用於蔭罩材料之具有 經.改-善可餽刻性的工業上經濟恆範合金鋼薄板，一種製造 上述®範合金鋼薄板之方法，一種由該恒範合金所製得之 蔭罩，及一種併入上述蔭罩之彩色映像管。 [解決問題之方法] 一種根據申請專利範圔第1項之蔭罩用恆範合金鋼薄 板，其由33至40 wt% Ni及其餘爲Fe所組成，且該恆範合 金鋼薄板於其經輥壓之表面中’具有丨丨〇〇}組織之百分比爲 60 至 80%。 6 本紙 1 尺度適用中國國家標準（CNS ) Λ4規格（21〇><297公釐厂 〜 (請先閱讀背面之注項再填寫本頁)B7 B7 Printed by the Central Standards Bureau of the Ministry of Economic Affairs and Consumer Cooperatives. 5. Description of the invention (work) The larger hole diameter part (hereinafter referred to as the large point) on the surface, and the joint hole part where the small point and the large point meet each other ( Penetrating holes, hereinafter referred to as Br Th holes). The effect of the iridescent spacer on the electron beam is substantially affected by this Br Th hole. Generally, the Hengfan alloy steel sheet for shadow masks has a thickness of 100 to 250 microns. In the case of a high-definition shadow mask, two-point holes The center point distance is approximately 250 microns. The Br Th pores each have a diameter of about 120 microns and should have a roundness and a uniform diameter. Moreover, it is strictly required that the Hengfan alloy sheet has an etched surface, provided that in terms of the function of the iridescent spacer, a fine and uniform surface roughness is required. Therefore, there is a strong need to improve the characteristics of the feed engraving, that is, the etchability of a constant-fan alloy steel sheet for such a shadow mask. Regarding methods for improving the etchability of Hengfan alloy steel sheets, some techniques for reducing the unavoidable impurities in Hengfan alloys have been disclosed in, for example, Japanese Patent Laid-Open No. Hei-2-51973 and Japanese Patent Case No. Sho 61 -190023 and other disclosures proposed that the content of unavoidable impurities such as C, 0 and N is limited. In fact, these proposed techniques are necessary for the formation of highly accurate etching techniques such as shadow masks or the like, but even if only these unavoidable impurities are reduced, it is still not possible to solve all the problems about Hengfan alloy steel sheet. Etchability issues. On the other hand, regarding the method for improving the metallurgical structure of Hengfan alloy, some technologies have been disclosed in Japanese Patent Case No. Hei-61-39343, Japanese Patent Case No. Hei 2-9655, and Japanese Patent Case No. Hei-6- In 279946 and other disclosures, it is proposed to limit the grain size or crystal orientation. These technologies are now widely known, and they are also applicable to the improvement of the paper size of the Chinese National Standard (CNS) A4 (210X 297). (Please read the precautions on the back before filling out this page.)-Order-5 Explanation of the invention (i) — The etchability of the Fan alloy is necessary. In polycrystalline materials, the finer the crystal grains, the less chance of the difference between the grain etch rates due to the crystal orientation, which can make Etching rate is uniform. In addition, 'Hengfan alloy has a face-centered cubic lattice structure' and it has the same structure type as Vostian iron stainless steel known as a stainless steel alloy in the steel field. It is also well known that it has a face-centered cubic lattice structure. Among the materials, 'on the high atom density planes such as the U11} plane and the 丨 100 plane, it is easier to cause uniform etching than other planes. Therefore,' combining the previous techniques described above is still not enough to provide an improved constant-fan alloy. Etchability to make it a material for high-definition shadow masks. In addition, these constant-fan alloys with fine and uniform grain structure and crystal orientation structure are manufactured industrially on cold rolls During the whole process of pressing, annealing and other steps, a complex control system β, which constitutes a major factor of high cost, is needed. Today, there is a stronger demand for low-cost shadow masks. In the future, high-level and low-cost shadow masks and shadow mask materials must be sought. Problems to be Solved by the Invention] One of the objectives of the present invention is to provide an industrially economical constant-fan alloy steel sheet for use in shadow mask materials with improved performance and improved engravability, and a method for manufacturing the above-mentioned ® Fan-alloy steel sheet. A method, a shadow mask made of the constant-fan alloy, and a color image tube incorporating the above-mentioned shadow mask. [Method for solving the problem] A constant-fan alloy for a shadow mask according to the first patent application 圔 1 A steel sheet consisting of 33 to 40 wt% Ni and the remainder being Fe, and the percentage of the Hengfan alloy steel sheet having a 'structure in the rolled surface' is 60 to 80%. 6 The size of this paper applies the Chinese National Standard (CNS) Λ4 specification (21〇 > < 297 mm factory ~ (Please read the note on the back before filling this page)
Λ7 B? 五、發明説明（) 一種根據申請專利範圍第2項之製造蔭罩用恆範合金 鋼薄板的方法，包含將實質上由33至40 wt% Ni及其餘爲 Fe所組成之恆範合金厚板進行熱加工，然後將經熱加工之 恆範合金厚板於輥壓減少率不超過80%之下進行初次冷輥 壓，於550°C或更高之溫度下退火，.以及於輥壓減少率不超 過50%之下進行第二次冷輥壓等步驟。 於上述用以製造蔭罩用恆範合金鋼薄板的方法中，於 初次冷輥壓中之輥壓減少率較佳爲50至80% (如專利範圍 第3項所述），於退火中之溫度較佳爲650至950°C (如專利 範圍第4項所述），且於第二次冷輥壓中之輥壓減少率較佳 爲0.05至40% (如專利範圔第5項所述）。 如專利範圍第6項所述之用於彩色映像管的蔭罩，使 用上述所提及之恆範合金鋼薄板。 如專利範圔第7項所述之彩色映像管，係倂入上述所 提及之蔭罩。 [較佳具體實施例] 首先，係將恆範合金中之Νι含量限定於33至40 wt% 。當恆範合金中之Ni含量介於上述範圔中時’該合金具有 顯著減低之熱膨脹係數。結果’由此恆範合金所製得蔭罩 併入CRT之情況下’可免除諸如彩色影像變形或顏色不規 則等問題(甚至當溫度改變時）。於另—方面’當Ni含量少 於33 wt%或Ni含量超過40 wt%時，該合金之熱膨脹係數 會增加，而導致上述諸如彩色影像變形等問題。製造供用 於CRT之蔭罩用恆範合金鋼薄板的一個技術問題’在於如 7 (請先閱讀背面之注意事項再填寫本頁) - -I a^i— n 1 --. 、π_ 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標準（fNS)A4規格（210X297公漦） 經濟部中央標準局負工消費合作社印製 五、發明説明（) 一 ' 何使恆範合金改善其可蝕刻性。然而，當欲優先改良該恆 範合金薄板之特徵時，環繞蔭罩製造之條件即變得嚴格， 且製造方法變得更加複雜。對於改善介於可用於工業製造 之範圔內的恒範合金之可蝕刻性而言，需要該恆範合金應 於其經輥壓之表面中，具有丨100丨組織之百分比爲60考80% 。若丨1〇〇丨組織之百分比大於80%之情形下，該恆範合金具 JS*較未改善之可蝕刻性。反之，於此個案中，於冷輥壓中 之輥壓減少率將較大，其需要將該恆範合金反覆進行輥壓 。結果’冷輥壓時間將更長，而導致該項製程延遲。而且 ’輕壓的輥往往承受由於恆範合金加工硬化所造成的損害 ，導致高製造成本。此外，最近已引人注目地推展出用於 製造蔭罩之蝕刻系統，其已可於高壓下噴灑高溫蝕刻溶液 。換言之’藉由加壓噴灑進行所請之“機械性蝕刻”，較 恆範合金之溶解反應更優勢操作。因此，給予製造蔭罩之 更加改良的蝕刻環境。故爲考量使製造蔭罩之花費減至某 一程度，需要將恒範合金之丨1〇〇丨組織的百分比限制於至多 約80%。另一方面，當恆範合金之{100}組織的百分比小於 60%時’其可蝕刻性減低，故下限決定設爲60%。 由上述觀點，以下解釋一種具有{100丨組織之百分比爲 60至80%之恆範合金的製造方法。將實質上由33至40 wt% Ni及其餘爲Fe所組成之熔融恆範合金，鑄製成鐵錠且加以 锻造，或經由連續鑄製程序而產生厚片，然後將其於消除 偏析之同時，進行熱加工成爲熱捲曲之厚片。厚片表面之 去銹皮作用，係藉由酸洗，或使用硏磨機進行硏磨而達成 本紙張尺度適用中國國本標準（CNS ) A4規格（2〗〇χ 297公潑) (請先閱讀背面之注意事項再填寫本頁) ---·---Γ--------t___‘ ----訂------ 經濟部中央標準局員工消費合作社印裝 Λ 7 . ___ Η7 一 五、發明説明（卜） 。其後，將該後片進行初次冷加工 '退火、並完成第二次 冷加工而成爲鋼薄片。初次冷加工通常係藉由使用輥壓機 進行冷輥壓而完成。減少率不僅對於範合金之輥壓平面結 構爲重要因素，其對冷輥壓製程相關之成本而言亦重要。 根據本發明之各種實驗結果，初次冷輥壓中之輥壓減少率 決定爲較佳80%或更少，且較佳係50至80%。當輥壓減少 率小於50%時，不可能使經輥壓之表面中丨1〇〇}組織之百分 比達到足夠値，而僅能達到少於60%之平面百分比値，此 低於{100}組織之百分比的下限。反之，即使當輥壓減少率 大於80%時，丨100}組織之百分比亦未隨之增加。於此情況 中，不僅不必要地加重輥壓程序之負擔，亦顯著增加輥之 損傷，故將輥壓減少率之上限決定爲80%。爲使經輥壓平 面結構回復，於550°C或更高之溫度下進行再結晶，遂如下 所述製程完成退火作用。此退火作用對改善丨1〇〇丨組織之百 分比具有功效。當退火溫度低於550°C時，無法使再結晶發 生至所希望程度，且丨1〇〇丨組織之百分比顯著減低。反之， 當退火溫度超過95(TC時，顯著加速再結晶作用且晶粒變得 較大，此造成恆範合金薄板之可蝕刻性惡化。因此，退火 溫度更佳爲650至950°C。第二次冷輥壓係爲了增進藉由將 恆範合金加工硬化所獲得之硬度與強度，以保持藉由退火 而獲得之{100丨組織之高百分比，且使所希望的硬度能納入 該恆範合金鋼薄板。於是，第二次冷輥壓中之輥壓減少率 決定爲50%或更少。當輥壓減少率大於50%時，會使藉由 退火而獲得之丨100丨組織之高百分比減退，因而使退火功效 9 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公楚） (請先閱讀背面之注意事項再填寫本頁) ----1 I 訂-I - B? 878350 五、發明説明（j) 喪失。故第二次冷輥壓中之輥壓減少率較佳爲50%或更少 ，且更佳爲0·05至40%。當輥壓減少率小於0.05%時，在 經退火恆範合金薄板與經第二次冷輥壓恆範合金薄板之硬 度上並未產生差異；亦即，第二次冷輥壓對該恆範合金並 無顯著功效。所成之恆範合金鋼薄板無法提供足夠硬度與 強度’其往往於蝕刻操作期間，由於薄板等類之變形，而 造成傳遞功率方面的問題。一般，對於恆範合金所需之硬 度爲Ην (維氏硬度)130或更高，而本發明之恆範合金鋼薄 板達到Ην 130至250之硬度。 而且，於此所得之蔭罩用恆範合金鋼薄板中{100}組織 之百分比，係使用X·射線繞射方法進行定量評估。此評估 方法包括：第一步驟測定各{111}、U〇〇}、U10}、及{311} 組織之繞射強度，以及第二步驟使用如下所示之方程式計 算{100}組織之百分比： {100}組織之百分比(％) = 100Χ 丨 100}/[{111} + {100} + (110} + {311)]...⑴’ 其中Uin、U00}、{110}、及{311丨代表各別組織之繞射強 度。 進一步，使用蝕刻係數來定量評估恆範合金鋼薄板之 可蝕刻性。蝕刻係數之測定方法包含，對薄板之一表面蝕 刻之步驟，以及接著計算蝕刻深度對側面蝕刻之比値的步 驟。 蝕刻係數=(蝕刻深度)/(側面蝕刻）* · *(2) 如上方程式(2)所表示，一具有優良可蝕刻性之材料呈 10 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 29<7公參） (請先閱讀背面之注意事項再填寫本頁) 經濟部中央標準局員工消費合作社印製Λ7 B? 5. Description of the invention () A method for manufacturing a constant-fan alloy steel sheet for a shadow mask according to item 2 of the scope of patent application, including a constant fan consisting of 33 to 40 wt% Ni and the rest being Fe The alloy thick plate is hot-worked, and then the hot-processed Hengfan alloy thick plate is cold-rolled for the first time under a rolling reduction rate of not more than 80%, and annealed at a temperature of 550 ° C or higher, and at The second step of cold rolling is performed when the rolling reduction rate does not exceed 50%. In the above method for manufacturing a constant-fan alloy steel sheet for a shadow mask, the rolling reduction rate in the first cold rolling is preferably 50 to 80% (as described in item 3 of the patent scope). The temperature is preferably 650 to 950 ° C (as described in item 4 of the patent range), and the roll reduction rate in the second cold roll is preferably 0.05 to 40% (as described in item 5 of the patent range) As described). As the shadow mask for a color picture tube as described in item 6 of the patent scope, the above-mentioned Hengfan alloy steel sheet is used. The color picture tube according to item 7 of the patent specification is a shadow mask mentioned above. [Preferred embodiment] First, the content of Ni in the Hengfan alloy is limited to 33 to 40 wt%. When the Ni content in the Hengfan alloy is in the above range, the alloy has a significantly reduced coefficient of thermal expansion. As a result, 'in the case where the shadow mask made from this constant-fan alloy is incorporated into a CRT', problems such as color image distortion or color irregularity (even when the temperature is changed) can be eliminated. In another aspect, when the content of Ni is less than 33 wt% or the content of Ni exceeds 40 wt%, the thermal expansion coefficient of the alloy will increase, resulting in the aforementioned problems such as color image distortion. A technical problem in manufacturing Hengfan alloy steel sheet for shadow masks used in CRT is as 7 (please read the precautions on the back before filling this page)--I a ^ i— n 1-., Π_ Ministry of Economy Printed by the Central Bureau of Standards Consumer Cooperatives The paper is printed in accordance with the Chinese National Standard (fNS) A4 specification (210X297 gong) Printed by the Central Standards Bureau of the Ministry of Economic Affairs and Consumer Cooperatives Its etchability. However, when it is desired to improve the characteristics of the constant alloy sheet, the conditions for manufacturing the shadow mask become stricter, and the manufacturing method becomes more complicated. In order to improve the etchability of the Hengfan alloy within the range that can be used in industrial manufacturing, it is required that the Hengfan alloy should have 丨 100 丨 the percentage of the structure in the rolled surface is 60 test 80% . If the percentage of microstructure is greater than 80%, the Hengfan alloy has a better etchability than JS *. On the contrary, in this case, the reduction rate of the rolling pressure in the cold rolling will be large, and it is necessary to repeatedly roll the constant-fan alloy. As a result, the cold rolling time will be longer, and this process will be delayed. Moreover, the light-pressed rollers often withstand the damage caused by the work hardening of Hengfan alloy, resulting in high manufacturing costs. In addition, an etching system for manufacturing a shadow mask has recently been noticeably introduced, which can spray a high-temperature etching solution under high pressure. In other words, the “mechanical etching” requested by pressurized spraying has a more advantageous operation than the dissolution reaction of Hengfan alloy. Therefore, a more improved etching environment is provided for manufacturing the shadow mask. Therefore, in order to consider to reduce the cost of manufacturing the shadow mask to a certain extent, it is necessary to limit the percentage of Hengfan alloy's 100% structure to at most about 80%. On the other hand, when the percentage of {100} structure of Hengfan alloy is less than 60%, its etchability decreases, so the lower limit is decided to be 60%. From the above point of view, a method of manufacturing a constant-fan alloy having a {100 丨 structure percentage of 60 to 80% is explained below. A molten constant-range alloy consisting essentially of 33 to 40 wt% Ni and the remainder Fe is cast into iron ingots and forged, or a thick sheet is produced through a continuous casting process, which is then eliminated while segregating , Heat-processed into a thick sheet of thermal curl. The rust-removing effect on the surface of slabs is achieved by pickling or honing with a honing machine. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (2) 0 × 297 mm. (Please first (Please read the notes on the back and fill in this page) -------- Γ -------- t___ '---- Order ------ Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs Λ 7. ___ Η7. 15. Description of the invention (bu). After that, the back sheet is subjected to the first cold working 'annealing, and the second cold working is completed to form a steel sheet. The first cold working is usually performed by cold rolling using a roll press. The reduction rate is not only an important factor for the rolling flat structure of the Fan alloy, but also important for the costs associated with the cold roll pressing process. According to the results of various experiments of the present invention, the rolling reduction rate in the first cold rolling is determined to be preferably 80% or less, and more preferably 50 to 80%. When the reduction rate of rolling pressure is less than 50%, it is impossible to make the percentage of the 100% organization in the rolled surface sufficient, and only a flat percentage of less than 60% can be achieved, which is lower than {100} The lower limit of the percentage of the organization. Conversely, even when the reduction rate of roll pressure is more than 80%, the percentage of 100% structure does not increase accordingly. In this case, not only the burden of the rolling process is increased unnecessarily, but also the damage of the rolls is significantly increased, so the upper limit of the rolling reduction rate is determined to be 80%. In order to restore the structure of the rolled flat surface, recrystallization is performed at a temperature of 550 ° C or higher, and then the annealing process is completed as described below. This annealing effect is effective for improving the percentage of 丨 100 丨 structure. When the annealing temperature is lower than 550 ° C, recrystallization cannot be brought to a desired degree, and the percentage of the 100% structure is significantly reduced. Conversely, when the annealing temperature exceeds 95 ° C, the recrystallization effect is significantly accelerated and the grains become larger, which causes the etchability of the Hengfan alloy sheet to deteriorate. Therefore, the annealing temperature is more preferably 650 to 950 ° C. The secondary cold-rolling is to improve the hardness and strength obtained by machining hardening the Hengfan alloy, so as to maintain a high percentage of {100 丨 structure obtained by annealing, and make the desired hardness into the Hengfan. Alloy steel sheet. Therefore, the rolling reduction rate in the second cold rolling is determined to be 50% or less. When the rolling reduction rate is greater than 50%, it will result in a high 丨 100 丨 structure obtained by annealing. The percentage decreases, so that the annealing efficiency is 9 This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297). (Please read the precautions on the back before filling this page) ---- 1 Order I-I-B? 878350 V. Description of the invention (j) is lost. Therefore, the rolling reduction rate in the second cold rolling is preferably 50% or less, and more preferably 0.05 to 40%. When the rolling reduction rate is less than 0.05 %, Between the annealed Hengfan alloy sheet and the Hengfan alloy sheet after the second cold rolling There is no difference in hardness; that is, the second cold rolling has no significant effect on the Hengfan alloy. The resulting Hengfan alloy steel sheet cannot provide sufficient hardness and strength. Deformation of thin plates and the like causes problems in transmitting power. Generally, the hardness required for Hengfan alloy is Ην (Vickers hardness) 130 or higher, while the Hengfan alloy steel sheet of the present invention reaches Ην 130 to 250. Moreover, the percentage of the {100} structure in the Hengfan alloy steel sheet for the shadow mask obtained here is quantitatively evaluated using the X · ray diffraction method. This evaluation method includes: the first step is to measure each {111} , U〇〇}, U10}, and {311} tissue diffraction intensity, and the second step uses the equation shown below to calculate the percentage of {100} tissue: {100}% of tissue (%) = 100 × 丨 100 } / [{111} + {100} + (110} + {311)] ... ⑴ 'where Uin, U00}, {110}, and {311 丨 represent the diffraction intensity of each organization. Further, use Etch coefficient to quantitatively evaluate the etchability of Hengfan alloy steel sheet. The method for measuring the number includes the step of etching one surface of the sheet, and then the step of calculating the ratio of the etching depth to the side etching. Etching factor = (etching depth) / (side etching) * · * (2) As the above formula ( 2) As indicated, a material with excellent etchability is 10 paper sizes applicable to the Chinese National Standard (CNS) A4 specification (210X 29 < 7 public reference) (Please read the precautions on the back before filling this page) Ministry of Economic Affairs Printed by the Consumer Standards Cooperative of the Central Bureau of Standards
— I1T------βπιιι——II 1 經濟部中央標隼局員工消費合作社印製 五、發明説明（§-) ' 現出相對於蝕刻深度(該薄板藉由噴灑溶液於厚度方向所得 之蝕刻長度）爲較少之側面蝕刻（於薄板表面方向所得之蝕 刻長度），亦即蝕刻係數變爲高的値。另一方面，具有較差 可蝕刻性之材料薄板，呈現出較大側面餽刻，亦即，蝕刻 係數變爲低的値。 材料薄板之機械性質係藉由測量材料薄板的厚度而供 比較。厚度測定方法係使用具有重量爲1〇〇克之維氏硬度 測試計進行。 [實施例] 本發明以下列更詳細引述之實施例做說明。將具有如 表1中所列示樣本Α化學組成的恆範合金鋼薄板，進行熔 融、鑄製 '锻造、並進行浸熱處理、熱輥壓及酸洗，依此 順序而製得熱捲曲鋼薄板。表2列示個別初次冷輥壓、退 火、及第二次冷輥壓之製造條件。表3列示所獲得材料薄 板之特徵評估結果。硬度係以維氏硬度(Hv-lOO)表示。若樣 本薄板之硬度爲Hvl30或更高，則其評估結果係給予“可 能”之標記。一般，係將鋼薄板以長.简形式於蝕刻線上通 過’因此除非該鋼薄板具有維氏硬度爲Hvl30或更高，否 則鋼板無法正常地於蝕刻線上通過。百分比値意指丨100丨組 織之百分比，且若U00)組織之百分比爲50至80%，則評估 結果係給予“可能”之標記。丨100}組織之百分比係藉由上 述之X·射線繞射方法測定得。對於蝕刻係數，若蝕刻係數 値爲2.6或更高，則評估結果給予“可能”之標記。於表3 中，〇代表“可能”，而X代表“不可能”。 _________ 11 本紙張尺度適用中國國家標準（〇\5)八4規格（210、乂297公#·) (請先閱讀背面之注意事項再填寫本頁)— I1T ------ βπιιι——II 1 Printed by the Consumers 'Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. 5. Description of the invention (§-)' The thickness is obtained by spraying the solution in the thickness direction with respect to the etching depth. The etching length) is less side etching (etching length obtained in the direction of the sheet surface), that is, the etching coefficient becomes high. On the other hand, a thin sheet of material having poor etchability exhibits large side feed engraving, i.e., the etching coefficient becomes low. The mechanical properties of the sheet material are compared by measuring the thickness of the sheet material. The thickness measurement method was performed using a Vickers hardness tester having a weight of 100 g. [Examples] The present invention will be described with reference to the following examples which will be described in more detail. Hengfan alloy steel sheet having the chemical composition of the sample A shown in Table 1 was melted, cast 'forged, and subjected to dip heat treatment, hot rolling and pickling, and a hot rolled steel sheet was prepared in this order. . Table 2 shows the manufacturing conditions of the individual first cold rolling, annealing, and second cold rolling. Table 3 shows the results of the characteristic evaluation of the obtained material sheet. The hardness is expressed in Vickers hardness (Hv-100). If the hardness of the sample sheet is Hvl30 or higher, the evaluation result is given a "possible" mark. Generally, the steel sheet is passed on the etching line in a long and short form. Therefore, unless the steel sheet has a Vickers hardness of Hvl30 or higher, the steel sheet cannot normally pass on the etching line. Percentage means 100% of the organization, and if the percentage of the organization is 50 to 80%, the evaluation result is given a "possible" mark. The percentage of 100} tissue is determined by the X-ray diffraction method described above. As for the etching factor, if the etching factor 値 is 2.6 or higher, the evaluation result is given a "possible" mark. In Table 3, 0 represents "possible" and X represents "impossible". _________ 11 This paper size applies to Chinese national standard (〇 \ 5) 8 4 specifications (210, 乂 297 公 # ·) (Please read the precautions on the back before filling this page)
經濟部中央標準局員工消費合作社印製 $fS3：S：0: Λ7 玉、發明説明（1 ) [表1] [表2] [表3] 如明白所示者’任何根據本發明之第1至6號樣本恆 範合金，具有足以滿足具代表性標準値之物質特徵，而其 他根據比較性實例之第7至10號樣本恆範合金，具有之硬 度' 百分比、及蝕刻係數等特徵中至少一項不足以達標準 値。 [本發明之功效] 本發明之蔭罩用恆範合金鋼薄板，係將實質上由33至 40 wt% Ni及其餘爲Fe所組成之恆範合金厚板進行熱加工 ，再將經熱加工之恆範合金厚板於輥壓減少率不超過80% 之下進行初次冷輥壓，於550°C或更高之溫度下退火，以及 於輥壓減少率不超過50%之下進行另一次冷輥壓等步驟， 而依此順序製得。因此可以經濟地製造本發明之蔭罩用恆 範合金鋼薄板，且其具有優良可蝕刻性。倂入由上述恆範 合金鋼薄板所製得之蔭罩的彩色映像管，幾乎免除不規則 色彩及不規則亮度，且投置於螢幕上之彩色影像鮮明度很 優良。 12 (請先閱讀背面之注意事項再填寫本頁)Printed by the Consumers 'Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs $ fS3: S: 0: Λ7 Jade, Invention Description (1) [Table 1] [Table 2] [Table 3] As clearly shown,' any of the first Sample No. 6 constant-fan alloys have material characteristics sufficient to meet the representative standard 値, while other samples No. 7 to No. 10 constant-fan alloys according to the comparative example have at least hardness' percentage and characteristics such as etching coefficient One is not enough to meet the standard. [Effects of the present invention] The Hengfan alloy steel sheet for the shadow mask of the present invention is a hot-working Hengfan alloy steel plate consisting essentially of 33 to 40 wt% Ni and the rest of Fe. Hengfan alloy thick plate is cold rolled for the first time at a rolling reduction of not more than 80%, annealed at a temperature of 550 ° C or higher, and another time at a rolling reduction of not more than 50%. Steps such as cold roll pressing were performed in this order. Therefore, the constant-alloy steel sheet for a shadow mask of the present invention can be economically manufactured, and has excellent etchability. The color image tube of the shadow mask made of the above-mentioned constant-fan alloy steel sheet is almost free of irregular colors and irregular brightness, and the color image cast on the screen is excellent. 12 (Please read the notes on the back before filling this page)
,1T 本紙張尺度適用中國國家標準（CNS ) Λ4規格（210X297公漦) Λ7 Β7 3.7㈣ 五、發明説明（I 〇 ) (表1) 恆範合金鋼薄板樣本之組成 樣本 編號 組成 （wt%) C Si Mh P s N A1 Cu Cr Ni A 0.0014 0.020 0.23 0.001 0.0007 0.0025 0.001 0.014 0.013 36.4 (表2) 樣本 編號 繼徽 徽冷麵 退 火 第二次 之前厚度 之鶴度 渺率 臟 時間 之鮮度 敵率 (勒 (絲） (%) (°C) (擁) 辭） (%) 1 0.49 0.230 53.0 800 5 0.200 13.3 2 0.70 0.150 78.5 800 5 0.130 13.3 3 1.02 0.203 80.0 800 5 0,130 36.0 4 0.65 0.131 80.0 800 5 0.130 0.2 5 0.70 0.150 78.5 670 5 0.130 13.3 6 0.70 0.150 78.5 940 5 0.130 13.3 7 2.60 0.130 95.0 1000 5 - - 8 1.73 0.260 85.0 1000 5 0.130 50.0 9 0.70 0.150 78.5 500 5 0.130 13.3 10 0.31 0.186 40.0 800 5 0.130 30.0 (表3)樣本特徵之評估結果 (請先閱讀背面之注意事項再填寫本頁) 訂 經濟部中央標準局員工消費合作社印製 m 纖 mm 說 織 m mmm (Hv-100) {100}組纖S分比 (%) _纖 1 151 60 28 〇 mm 2 150 68 2.7 〇 3 189 62 27 〇 4 145 79 28 〇 5 172 67 2.7 〇 S^!l 6 139 71 27 〇 節刪 7 116 98 26 X _獅!1 8 196 58 24 X _娜!1 9 179 52 25 X 賺賺!1 10 180 46 24 X 賺賺!1 13 聲 本紙張尺度適用中國國家標準（CNS ) Λ4規格（210X 297公釐）, 1T This paper size is applicable to Chinese National Standard (CNS) Λ4 specification (210X297mm) Λ7 Β7 3.7㈣ V. Description of the invention (I 〇) (Table 1) Composition of Hengfan alloy steel sheet samples Sample number composition (wt%) C Si Mh P s N A1 Cu Cr Ni A 0.0014 0.020 0.23 0.001 0.0007 0.0025 0.001 0.014 0.013 36.4 (Table 2) Sample No. Following the Huizhou cold surface annealing for the second time, the thickness of the crane is very low and the time of dirty time is dirty. Le (silk) (%) (° C) (holding) (%) 1 0.49 0.230 53.0 800 5 0.200 13.3 2 0.70 0.150 78.5 800 5 0.130 13.3 3 1.02 0.203 80.0 800 5 0,130 36.0 4 0.65 0.131 80.0 800 5 0.130 0.2 5 0.70 0.150 78.5 670 5 0.130 13.3 6 0.70 0.150 78.5 940 5 0.130 13.3 7 2.60 0.130 95.0 1000 5--8 1.73 0.260 85.0 1000 5 0.130 50.0 9 0.70 0.150 78.5 500 5 0.130 13.3 10 0.31 0.186 40.0 800 5 0.130 30.0 ( Table 3) Evaluation results of sample characteristics (please read the notes on the back before filling out this page) Order printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs m fiber mm said weaving m mmm (Hv-100) {100} group fiber S Fraction (%) _ Fiber 1 151 60 28 〇mm 2 150 68 2.7 〇3 189 62 27 〇4 145 79 28 〇5 172 67 2.7 〇S ^! L 6 139 71 27 〇Section 7 116 98 26 X _ Lion! 1 8 196 58 24 X _Na! 1 9 179 52 25 X Earn money! 1 10 180 46 24 X Earn money! 1 13 Voices The paper size applies the Chinese National Standard (CNS) Λ4 specification (210X 297 mm)