A7 B7 4〇393〇 五、發明説明（I ) [技術領域] 本發明關於〜種供使用於彩色映像管之蔭罩用鋼板， 〜種由該鋼板所製得之蔭罩，及一種該鋼板之製造方法。 其進一步關於一種倂入該上述蔭罩的彩色映像管。更特別 地’其關於一種具有優良可加壓成形性之蔭罩用鋼板，其 在穿孔後形成點狀細孔，該鋼板能夠在不產生伸長變形下 麼製成形爲扁平蔭罩。其亦關於一種由其所製得之蔭罩， 〜種供製造彼之方法及一種倂入該上述蔭罩之彩色映像管。 [先前技藝] 目前’係使用一種由因瓦鎳鐵合金或鋁脫氧鎭靜鋼所 製成之薄鋼板’做爲用於彩色映像管（以下引稱爲CRT)之 蔭罩用材料。該由鋁脫氧鎭靜鋼所製成之蔭罩用材料係藉 由熱輥壓鋁脫氧鎭靜鋼、同樣以稀酸溶液去氧化皮、同樣 進行退火 '接著冷輥壓、脫碳-退火及最終冷輥壓等步驟而 製得。將由此而獲得之薄鋁脫氧鎭靜鋼板藉由使用光刻蝕 方法穿孔而形成點孔’以使能製得扁平罩。將該扁平罩進 行退火 '壓製成？^爲所希望形狀、及塗黑，然後將其倂入 CRT 中。 蔭罩係供做爲一種隨所提供的電壓產生電子束之陰極 ’並做爲可變光闌（iris diaphragm)，以使已通過點孔之 電子束投射於分布在前面板之螢光塗層的點上。以後者角 色之觀點而言因爲該等點孔直接影響呈現於CRT上之影 像可見度畫面不規則色調、或不規則亮度，而因此彼等需 本紙張尺度適用中國國家榇準（CNS ) A4規格（2丨Ox 297公慶） (請先閲讀背面之注意事項再填寫本頁)A7 B7 40393. V. Description of the Invention (I) [Technical Field] The present invention relates to ~ a steel sheet for a shadow mask for use in a color picture tube, ~ a shadow mask made from the steel sheet, and a steel sheet Of manufacturing method. It further relates to a color picture tube which is inserted into the above-mentioned shadow mask. More particularly, it relates to a steel sheet for a shadow mask having excellent press moldability, which is formed into a dot-like fine hole after perforation, and which can be formed into a flat shadow mask without causing elongation and deformation. It also relates to a shadow mask made by the same, a method for manufacturing the same, and a color image tube inserted into the above shadow mask. [Previous technique] Currently, a thin steel plate made of Invar or aluminum deoxidized slag steel is used as a shadow mask material for a color picture tube (hereinafter referred to as CRT). The material for the shadow mask made of aluminum deoxidized steel is hot-rolled aluminum deoxidized steel, which is also descaled with a dilute acid solution, and annealed. Finally, it is prepared by cold rolling and other steps. The thin aluminum deoxidized steel sheet thus obtained was perforated by using a photolithography method to form a point hole 'to enable a flat cover to be manufactured. Annealing the flat cover ^ Take the desired shape and blacken it, and then insert it into the CRT. The shadow mask is used as a cathode to generate an electron beam with the supplied voltage and as an iris diaphragm, so that the electron beam that has passed through the dot hole is projected on the fluorescent coating distributed on the front panel On the point. From the perspective of the latter role, because these point holes directly affect the irregular tones or irregular brightness of the image visibility screen presented on the CRT, they need to use the Chinese National Standard (CNS) A4 specification for this paper scale ( 2 丨 Ox 297 public holiday) (Please read the notes on the back before filling this page)
T 經濟部智慧財產局員工消費合作社印製 A7 B7 403930 五、發明説明（夕） 要相當高的尺寸精確度。 待經如上所述以高精確度穿孔而形成點孔之後，使該 蔭罩用鋼板進行CRT組裝步驟，在此將其切成單片之扁平 罩。將各扁平罩進行退火、壓製成形及塗黑’然後將其倂 入CRT中。上述退火之目的在於使平面罩具有良好之成形 性，並增進扁平罩之磁特性。 殘餘在鋁脫氧鎭靜鋼中之碳與氮，往往於壓製成形期 間，造成不均勻伸長或所謂的拉伸變形。已提出數種供減 少鋼中碳與氮量之方法，且已獲得相當穩定之效果。例如 ，若針對C時，可主要經由脫碳-退火過程而獲得過低碳鋼 ，而若針對N時，可主要經由製鋼方法中之真空除氣過程 ，而容易地減少殘餘之氮。然而，已瞭解到，鋼中之N含 量於壓製成形前之退火期間，或於形成薄板同時之退火期 間，會再度增加而誘發此類不均勻伸長。氮爲何會增加之 原因係由於N爲退火大氣之主要成分，其於退火期間被吸 收入鋼中。因此，已明瞭該氮-吸收現象，但是供防止該現 象之技術卻仍尙未被教示。 [本發明欲解決之問題] 如上所述，於製造供使用於CRT之蔭罩的方法中，所 面臨之技術問題在於如何在退火期間防止氮-吸收現象。於 是’本發明之第一目的在於以提出一種蔭罩用鋁脫氧鎭靜 鋼板’而授與供在退火期間防止氮-吸收現象之方法，以及 由其所製得之蔭罩及一種倂入該蔭罩之CRT。更具體地， __ 4 本紙張尺度適用中國國家標丰（CNS ) A4規格（210x 297公釐） (請先閲讀背面之注意事項再填寫本頁) -5 經濟部智慧財產局員工消費合作社印製 403930 五、發明说明（4 ) (請先閱讀背面之注意事項再填寫本頁) 該方法係首先指定出鋼中於蔭罩製造方法中之退火期間容 易加速發生氮-吸收現象的元素，然後減少此類元素之量， 以使能控制被吸收入鋼中之N量。結果，該鋼板於壓製成 形期間，可免發生不均勻伸長。 本發明之第二目的在於提出具有優良可壓製成形性之 蔭罩的製造方法。 [解決問題之方法] 一種如本發明申請專利範圍第1項之用於蔭罩之鋼板， 係由實質上由0.025至0.35重量％]\411、不多於0.007重量。/^1 ，及餘量爲Fe所組成之鋁脫氧鎭靜鋼所製成。 一種如申請專利範圍第2項之用於蔭罩之鋼板，係由實 質上由0.015至1.0重量。/。〇1，0.025至0_35重量。/〇Mn、不多 於0.007重量％N，及餘量爲Fe所組成之鋁脫氧鎭靜鋼所製 成。 線 經濟部智慧財產局員工消費合作社印製 一種如申請專利範圍第3項之蔭罩，其特徵爲實質上由 不多於0.009重量％N，及餘量爲Fe所組成之鋁脫氧鎭靜鋼 板係經穿孔而形成許多細孔。 一種如申請專利範圍第4項之蔭罩，其特徵爲該鋁脫氧 鎭靜鋼板進一步含有0.025至0.35重量。/〇Mn。 一種如申請專利範圍第5項之蔭罩’其特徵爲該鋁脫氧 鎭靜鋼板進一步含有0.015至1.0重量％(：11及0.〇25至0.35重 量 ％Mn。 一種如申請專利範圍第6項之彩色映像管’併入上述之 5__ 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 403930 五、發明説明（φ) 蔭罩。 一種如申請專利範圍第7項之蔭罩製造方法，包含將蔭 罩用鋼板穿孔而形成許多細孔，以及將該具有細孔之鋼板 於具露點範圍爲-10至+30t之無氧環境下進行退火的步驟 〇 一種如申請專利範圍第8及9項之蔭罩製造方法，其特 徵爲該無氧環境實質上包含氮氣，或氮與氫氣之混合氣體 ，且該退火係於550至860°C下進行。 一種如申請專利範圍第1〇項之彩色映像管，倂入由上 述任一項之方法所製得的蔭罩。 [本發明之較佳實施例] 本發明之第一目的在於提出一種供主要使用於CRT中 之蔭罩用鋼板，其係由實質上由0.025至〇.35重量％1^11、不 多於0.007重量’及餘量爲Fe所組成之鋁脫氧鎭靜鋼所 製成。經證實，當本發明之鋼板使用於形成蔭罩時，即使 其在蔭罩製造方法中之退火期間吸收氮，其於壓製成形期 間’亦能夠琴除不均勻伸長。而且，當藉由將Cu添加至上 述鋁脫氧鎭靜鋼中而製備得之鋼板用於形成蔭罩時，其在 經蝕刻形成點細孔時，可獲得改良之可穿孔性。本發明之 第二目的在於提供一種由實質上由不多於0.009重量％>1， 及餘量爲Fe所組成之鋁脫氧鎭靜鋼所製成的鋼板。經證實 ’本發明之鋼板於壓製成形期間，不造成任何伸長變形， 或不誘發產生不均勻伸長；換言之，其具有優良可壓製成 本紙張尺度適用中國國家標隼（CNS )八4規格（2丨Ox 297公釐） (請先閱讀背面之注意事項再填寫本頁) 、τ 經濟部智慧財產局員工消费合作社印焚 經濟部智慧財產局員工消費合作社印製 403930 五、發明説明（<) 形性。亦證實，因爲該鋼板係藉由將適當量之N固態地溶 入鋼中而製備得，故其能獲得增進之強度以作爲蔭罩之材 料，且當將由此鋼板製得之蔭罩倂入CRT中時，該CRT可 獲得具有少像畸變之畫面。經進一步明確證實，當本發明 之鋼板係藉由將0.025至0.35重量％]^11及，0.015至1.0重量 %Cu添加至鋼中而製備得時，該所獲得之鋼板因固體溶液 硬化作用而可獲得強度上的改善。再者，Cu之添加使能夠 增進該鋼板於蝕刻形成點細孔期間之可穿孔性。本發明之 第三目的在於提供一種倂入上述之任一蔭罩的CRT。因爲 本發明之CRT倂入具有由蝕刻形成之優良穿孔的細孔、加 強之材料強度 '及改善之加壓製可成形性的蔭罩，故其經 由該具有最低程度畸變與高級點孔之蔭罩，而可獲得高品 質畫面。本發明之第四目的在於提供一種高級蔭罩之製造 方法，其中該於壓製成形前之退火係於露點爲介於-10至 +30°C之間’於由氮氣或氮與氫氣之混合氣體所組成之非氧 化作用大氣中且於550至860t之溫度下的條件下完成，以 抑制於壓製成形期間發生之不均勻伸長。因此，可獲得具 優良可壓製成形性之蔭罩。亦即，當退火條件控制於如上 所述時，可將被吸收入鋼中之N量，限制於所希望的範菌 〇 本發明現詳細解說如下。首先一種用於本發明CRT之 蔭罩用錦脫氧鎭靜鋼板係藉由將經由正常製鐵及製鋼方法 所製得之熔融鋼，或另一從鋼碎片製得之熔融鋼，或其他 經由電感應熔融方法製得之熔融鋼，進行鋼桶精煉方法及 ------^------、訂------^ - « (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標隼（CNS ) A4規格（210 X 297公廣） 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明説明（L) 真空除氣方法，以使成爲A1-脫氧。於固化作用後，對該綱 板調整其組成份，以使能具有實質上由0.025至0.35重籩 %Mn、不多於0.007重量％>1，且餘量爲Fe以及無法避免之 雜質所組成的合金組合物。依照個案要求，將〇.〇15至1·〇 重量。/。之Cu加至該合金組合物中。將藉由正常連續鑄製方 法而形成之經連續鑄製厚板或藉由正常鐵錠鑄製方法而形 成之鐵錠進行熱輥壓以製造經熱輥壓之鋼板。將該經熱輥 壓之鋼板進行去氧化皮及冷輥壓以具有所指定之厚度’並 捲起呈開路線圈形狀，以使其自身表面不會互相接觸’然 後於箱型退火爐中進行脫碳-退火。附帶地，該退火爐並不 限於箱型退火爐，但若連續退火爐具有相同程度之容量， 可使用後者爐。該脫碳-退火係於無氧環境下，於具有正常 地（630至 700)°c x(5至 20)小時 + (700至 860)°C x(5 至 10)小 時之熱歷史之受控露點下進行。於脫碳作用後，該鋼板應 含有減至不多於0.001重量％之碳總量。接著，藉由冷輥壓 以獲得所希望厚度之蔭罩而完成該鋼板。同時，如此所完 成之鋼板的表面可達到所希望之表面粗糙度，認舄係附著 上欲覆蓋其之保護薄層。 將由此獲得之鋁脫氧鎭靜鋼板1使用光蝕刻方法穿孔 ，而形成點細孔。此光蝕刻作用係經由使用氯化鐵溶液之 正常溶解反應完成。經穿孔之扁平蔭罩稱爲扁平罩。於將 其併入CRT之前，先將該扁平罩藉由退火軟化、壓製成形 並進行及塗黑。用於扁平罩之退火條件爲介於-10至+3(rc 間之露點，由氮氣或氮與氫氣之混合氣體所組成之大氣， 8 度適用中國國家標準（CNS ) A4現格（210X 297公釐） --------,--1------1T------^ - - {請先閲讀背面之注意事項再填寫本頁) 403930 五、發明説明（1 ) 以及550至860°C之溫度。於此等條件下，可能控制鋼中之 N含量，並於蔭罩及CRT製造方法中的退火期間，將被吸收 入鋼中之N量’限制於所希望的範圍。 以下敘述關於欲添加至本發明CRT之蔭罩用鋁脫氧鎭 靜鋼板的元素、與無法避免之雜質、以及爲何應限制該等 組成份之添加量或含量的理由。 錳係做爲製鋼方法中之脫氧劑而加入。Μη殘餘在鋼中 ’會對該鋼板之固體溶液強化作用有影響。此外，錳爲用 以抑制鋼之熱易脆性的有效組成份。 * 此等影響爲已熟知。進而，本發明之發明人已發現一 項新事實，即，錳直接對上述之氮-吸收現象有作用。也就 是說，經確定，錳具有增進氮-吸收之趨向，而氮爲於製造 做爲蔭罩用材料之鋁脫氧鎭靜鋼板的方法中之退火期間， 以及於壓製成形爲扁平罩前的退火期間環境主要組成。經 確定，該Ν吸收現象與鋼中Μη量之增加成正比。而且，所 吸收之氮有部分與Α1反應而形成Α1Ν，但大多數剩餘者係 類似碳般固態地溶於該鋼中呈一種間隙固態溶液，而會於 其壓製成形期間造成該扁平罩之不均勻伸長。於是’將欲 添加於鋼中之錳量限定於0.025至0.35重量％之範圍內。錳 對氮-吸收之作用，在鋼中之Μη含量超過約0.35重量％時變 得顯著。因此，將Μη含量之上限定爲〇.35重量％。相對地 ，鋼中之Μη含量減少時，氮-吸收現象受到抑制。然而， 藉由Μη固體溶液加強作用產生之鋼強化會減低’其誘使蔭 罩之材料強度不足。因此，將下限定爲0.025重量％。又’ 9 本紙張尺度適用中國國家標準（CNS )八4規格（210Χ297公釐） (請先閲讀背面之注意事項再填寫本頁) -* 丁 經濟部智«-財凌局員工消費合作社印製 經濟部智慧財產局員工消費合作社印製 403930 五、發明说明（$ ) Μη與鋼中之硫反應形成MnS ’以致能中和由硫引起之脆性 。正常地’鋼中之硫含量爲0·01至0.025重量％，Μη應以不 少於S含量之量存在。亦爲此理由，Μη含量之下限係定於 0.025重量％。 如上所述，氮於壓製成形期間造成不均勻伸長，即所 謂的拉伸變形，且氮對鋼之影響與碳類似，所以鋼中之Ν 含量應嚴格加以控制。經由正常製鋼方法，必然能獲得其 中含有不多於0.007重量％>1之鋼。因此，於本發明中，將 蔭罩用材料之鋁脫氧鎭靜鋼板中之Ν含量限定於0.007重胃 %或更少。 另一方面，因爲蔭罩板會於其製造方法中之退火期間 遭遇氮-吸收現象，於是將蔭罩中之Ν含量，限定於0.009重 量％或更少。 以固態且均一地溶解至鋼中之銅顯著影響對該鋼可触 刻性之改良。尤其，因爲其具有於微觀及巨觀上使蝕刻速 率均一化之作用，故經蝕刻之表面變得較平滑，且呈現較 細緻之組織。此作用決定於Cu添加量。當銅添加量增加時 ，經蝕刻鋼板表面之表面粗糙度，例如Ra値，顯著變小， 且該鋼板表面趨於呈現細緻之組織。於是，將Cu添加量限 定於0.015至1.〇重量％。少於〇·〇15重量％之銅量，僅少量影 響對該鋼可蝕刻性之改良，故Cu添加量之下限爲0.015重量 %。更佳地其爲0.020重量％或更多，且進一步希望爲0.025 重量％或更多。相對地，當將具有Cu量超過1.0重量。/。之鋼 板進行蝕刻時，Cu與鋼一起溶解，而藉此加速蝕刻溶液衰 ________10 _____ 本紙乐尺度適用中囷囤家標隼（CNS )八4規格（210x297公釐） ----------装---^----訂------涑--- (請先閲讀背面之注意事項再填寫本頁) A7 B7T Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 403930 V. Description of the invention (Evening) The size accuracy must be quite high. After the point holes are formed by perforating with high accuracy as described above, the steel sheet for a shadow mask is subjected to a CRT assembling step, and is cut into a single-piece flat mask. Each flat cover was annealed, press-formed, and blackened 'and then incorporated into a CRT. The purpose of the above annealing is to make the flat cover have good formability and improve the magnetic properties of the flat cover. The carbon and nitrogen remaining in the aluminum deoxidized concrete steel often cause uneven elongation or so-called tensile deformation during press forming. Several methods have been proposed for reducing the amount of carbon and nitrogen in steel, and quite stable results have been obtained. For example, for C, the low carbon steel can be obtained mainly through the decarburization-annealing process, while for N, the residual nitrogen can be easily reduced by the vacuum degassing process in the steel making method. However, it has been known that the N content in steel during the annealing before press forming, or during the annealing at the same time as the sheet is formed, will increase again to induce such non-uniform elongation. The reason why nitrogen increases is because N is the main component of the annealing atmosphere, and it is absorbed into the steel during the annealing. Therefore, the nitrogen-absorption phenomenon is known, but techniques for preventing the phenomenon have not been taught. [Problems to be Solved by the Invention] As described above, in the method of manufacturing a shadow mask for use in a CRT, a technical problem faced is how to prevent the nitrogen-absorption phenomenon during annealing. Therefore, 'a first object of the present invention is to teach a method for preventing a nitrogen-absorption phenomenon during annealing by proposing an aluminum deoxidizing quiet steel plate for a shadow mask', and a shadow mask made therefrom and a method for incorporating the same CRT of the shadow mask. More specifically, __ 4 This paper size is applicable to China National Standard and Standard (CNS) A4 specifications (210x 297 mm) (Please read the precautions on the back before filling this page) -5 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 403930 V. Description of the invention (4) (Please read the precautions on the back before filling this page) This method first specifies the elements in the steel that are liable to accelerate the nitrogen-absorption phenomenon during annealing during the shadow mask manufacturing method, and then reduces The amount of such elements enables to control the amount of N absorbed into the steel. As a result, the steel sheet can be prevented from undergoing uneven elongation during press forming. A second object of the present invention is to propose a method for manufacturing a shadow mask having excellent press moldability. [Method for solving the problem] A steel sheet for a shadow mask as described in item 1 of the scope of patent application of the present invention is substantially from 0.025 to 0.35% by weight] \ 411 and not more than 0.007 by weight. / ^ 1, and the balance is made of aluminum deoxidized gall steel composed of Fe. A steel sheet for a shadow mask according to item 2 of the patent application range is from 0.015 to 1.0 in weight. /. 〇1, 0.025 to 0_35 weight. / 〇Mn, not more than 0.007% by weight of N, and the balance is made of aluminum deoxidized quiet steel composed of Fe. The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Online Economics printed a shadow mask such as the scope of patent application No. 3, which is characterized by an aluminum deoxidized quiet steel plate consisting essentially of not more than 0.009 wt% N and the balance of Fe It is perforated to form many fine holes. A shadow mask according to item 4 of the scope of patent application, characterized in that the aluminum deoxidized concrete plate further contains 0.025 to 0.35 weight. / 〇Mn. A shadow mask according to item 5 of the scope of patent application, characterized in that the aluminum deoxidized quiet steel sheet further contains 0.015 to 1.0% by weight (: 11 and 0.025 to 0.35% by weight Mn. The color image tube is incorporated into the above 5__ This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) 403930 V. Description of the invention (φ) shadow mask. A shadow mask manufacturing such as the scope of patent application No. 7 The method comprises the steps of perforating a steel plate for a shadow mask to form a plurality of fine holes, and annealing the steel plate having the fine holes in an oxygen-free environment with a dew point ranging from -10 to + 30t. The method for manufacturing a shadow mask according to items 8 and 9 is characterized in that the oxygen-free environment substantially contains nitrogen, or a mixed gas of nitrogen and hydrogen, and the annealing is performed at 550 to 860 ° C. The color image tube of item 0 incorporates a shadow mask made by any of the methods described above. [Preferred Embodiment of the Invention] A first object of the present invention is to propose a shadow mask mainly for use in a CRT. Used steel plate, which It is made of aluminum deoxidized quiet steel consisting essentially of 0.025 to 0.35% by weight 1 ^ 11, not more than 0.007% by weight, and the balance is Fe. It has been confirmed that when the steel sheet of the present invention is used to form a shade At the time of masking, even if it absorbs nitrogen during the annealing in the shadow mask manufacturing method, it can eliminate uneven elongation during press forming. Moreover, it is prepared by adding Cu to the above-mentioned aluminum deoxidized gall steel. When the steel sheet is used to form a shadow mask, it can obtain improved perforability when the dot pores are formed by etching. A second object of the present invention is to provide a steel sheet consisting essentially of not more than 0.009% by weight> 1, And the steel sheet made of aluminum deoxidized slag steel composed of Fe. It has been proved that the steel sheet of the present invention does not cause any elongation or deformation during press forming, or does not induce uneven elongation; in other words, it has excellent Squeezable cost paper standards are applicable to China National Standards (CNS) 8-4 specifications (2 丨 Ox 297 mm) (Please read the precautions on the back before filling this page), τ Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Consumption Cooperatives, and the economy unit Printed by the Intellectual Property Bureau's Consumer Cooperatives 403930 V. Description of the invention (<) Shape. It has also been confirmed that the steel plate can be improved because it is prepared by dissolving an appropriate amount of N solid into the steel. The strength is used as the material of the shadow mask, and when the shadow mask made of this steel plate is incorporated into the CRT, the CRT can obtain a picture with less image distortion. It is further confirmed that when the steel plate of the present invention is 0.025 To 0.35% by weight] ^ 11 and 0.015 to 1.0% by weight Cu are prepared by adding them to steel, and the obtained steel sheet can be improved in strength due to the solid solution hardening effect. Furthermore, the addition of Cu enables the Improving the pierceability of the steel sheet during the formation of spot pores by etching. A third object of the present invention is to provide a CRT incorporated into any of the above-mentioned shadow masks. Because the CRT of the present invention incorporates a shadow mask with excellent perforations formed by etching, enhanced material strength ', and improved pressurization formability, it passes through the shadow mask with minimal distortion and advanced dot holes. , And get a high-quality picture. A fourth object of the present invention is to provide a method for manufacturing a high-quality shadow mask, wherein the annealing before pressing is performed at a dew point between -10 and + 30 ° C, and is composed of nitrogen or a mixed gas of nitrogen and hydrogen. The composition is completed in the non-oxidizing atmosphere at a temperature of 550 to 860 t to suppress uneven elongation that occurs during press forming. Therefore, a shadow mask having excellent press moldability can be obtained. That is, when the annealing conditions are controlled as described above, the amount of N absorbed into the steel can be limited to the desired species. The present invention will now be explained in detail as follows. First of all, a deoxidized quiet steel sheet for a shadow mask used in the CRT of the present invention is a molten steel made by normal iron and steel making methods, or another molten steel made from steel fragments, or Refining method of molten steel produced by induction melting method and steel barrel and ------ ^ ------, order ------ ^-«(Please read the precautions on the back before filling in this Page) This paper size is applicable to China National Standard (CNS) A4 (210 X 297). Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (L) Vacuum degassing method to become A1 -Deoxidation. After curing, adjust the composition of the plate to enable it to have a weight ratio of 0.025 to 0.35% Mn, not more than 0.007% by weight > 1, and the balance is Fe and unavoidable impurities Composition of alloy composition. According to the requirements of the case, it will be 0.015 to 1.0 weight. /. Cu is added to the alloy composition. A continuously cast thick plate formed by a normal continuous casting method or an iron ingot formed by a normal iron ingot casting method is hot rolled to manufacture a hot rolled steel plate. The hot-rolled steel sheet is descaled and cold-rolled to have a specified thickness 'and rolled into an open-loop coil shape so that its surfaces do not contact each other' and then performed in a box-type annealing furnace Decarburization-annealing. Incidentally, the annealing furnace is not limited to a box-type annealing furnace, but if the continuous annealing furnace has the same capacity, the latter furnace may be used. The decarburization-annealing is controlled in an oxygen-free environment at a normal (630 to 700) ° cx (5 to 20) hours + (700 to 860) ° C x (5 to 10) hours Under dew point. After decarburization, the steel sheet should contain a total amount of carbon reduced to not more than 0.001% by weight. Then, the steel sheet is completed by cold rolling to obtain a shadow mask of a desired thickness. At the same time, the surface of the steel sheet thus completed can achieve the desired surface roughness, and it is believed that a protective thin layer is attached to cover the surface. The thus-obtained aluminum deoxidized static steel sheet 1 was perforated using a photo-etching method to form dot pores. This photoetching is performed through a normal dissolution reaction using a ferric chloride solution. A perforated flat shadow mask is called a flat mask. Prior to incorporating it into the CRT, the flat mask was softened by annealing, press-formed, and blackened. The annealing conditions used for flat hoods are between -10 and +3 (dew point between rc, an atmosphere composed of nitrogen or a mixed gas of nitrogen and hydrogen, and 8 degrees is applicable to China National Standard (CNS) A4 (210X 297) (Mm) --------,-1 ------ 1T ------ ^--{Please read the notes on the back before filling this page) 403930 V. Description of the invention ( 1) and temperatures from 550 to 860 ° C. Under these conditions, it is possible to control the N content in the steel and to limit the amount of N absorbed into the steel to the desired range during the annealing in the shadow mask and the CRT manufacturing method. The following describes the elements to be added to the aluminum deoxidized aluminum static steel sheet for shadow masks of the CRT of the present invention, unavoidable impurities, and the reason why the amount or content of these components should be limited. Manganese is added as a deoxidizer in the steel making method. Mn remaining in the steel will affect the solid solution strengthening effect of the steel plate. In addition, manganese is an effective component for suppressing the thermal brittleness of steel. * These effects are well known. Furthermore, the inventors of the present invention have discovered a new fact that manganese has a direct effect on the above-mentioned nitrogen-absorption phenomenon. That is, it has been determined that manganese has a tendency to increase nitrogen-absorption, and nitrogen is used during annealing in a method for manufacturing an aluminum deoxidizing quiet steel plate as a material for a shadow mask, and annealing before pressing into a flat mask The main components of the environment during this period. It was determined that this N absorption phenomenon was directly proportional to the increase in the amount of Mη in the steel. In addition, part of the absorbed nitrogen reacts with A1 to form A1N, but most of the remaining ones are carbon-like and solidly dissolved in the steel to form a gap solid solution, which will cause the flat cover to be inert during its press forming. Evenly stretched. Therefore, the amount of manganese to be added to the steel is limited to the range of 0.025 to 0.35% by weight. The effect of manganese on nitrogen-absorption becomes significant when the Mη content in the steel exceeds about 0.35% by weight. Therefore, the upper limit of the Mn content is limited to 0.35% by weight. In contrast, when the Mη content in steel decreases, the nitrogen-absorption phenomenon is suppressed. However, the strengthening of the steel produced by the strengthening effect of the Mn solid solution reduces the strength of the material which induces the shadow mask. Therefore, the lower limit is set to 0.025% by weight. Also '9 This paper size applies to China National Standard (CNS) 8-4 specifications (210 × 297 mm) (Please read the precautions on the back before filling this page)-* Dingzhi Ministry of Economics «-Printed by the Finance Consumer Employees Cooperative Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 403930 V. Description of Invention ($) Mn reacts with sulfur in steel to form MnS ', which can neutralize the brittleness caused by sulfur. Normally, the sulfur content in the steel is from 0.01 to 0.025% by weight, and Mη should be present in an amount not less than the S content. For this reason, the lower limit of the Mn content is set to 0.025% by weight. As mentioned above, nitrogen causes non-uniform elongation during press forming, the so-called tensile deformation, and the effect of nitrogen on steel is similar to carbon, so the N content in steel should be strictly controlled. By the normal steel making method, a steel containing not more than 0.007% by weight > 1 must be obtained. Therefore, in the present invention, the N content in the aluminum deoxygenated still steel sheet as a material for a shadow mask is limited to 0.007 wt% or less. On the other hand, since the shadow mask plate may experience nitrogen-absorption phenomenon during annealing in its manufacturing method, the N content in the shadow mask is limited to 0.009% by weight or less. Copper, which solidly and uniformly dissolves into steel, significantly affects the improvement of the steel's reachability. In particular, because it has the effect of uniformizing the etching rate on a microscopic and macroscopic view, the etched surface becomes smoother and presents a finer structure. This effect depends on the amount of Cu added. When the amount of copper is increased, the surface roughness of the surface of the etched steel sheet, such as Ra 値, becomes significantly smaller, and the surface of the steel sheet tends to show a fine structure. Therefore, the amount of Cu added is limited to 0.015 to 1.0% by weight. The amount of copper less than 0.015% by weight affects the improvement of the etchability of the steel only slightly, so the lower limit of the amount of Cu added is 0.015% by weight. It is more preferably 0.020% by weight or more, and further desirably 0.025% by weight or more. In contrast, when the amount of Cu will exceed 1.0 weight. /. When the steel plate is etched, Cu is dissolved together with the steel, thereby accelerating the decay of the etching solution. ________10 _____ This paper scale is applicable to the Chinese Standard (CNS) 8 4 (210x297 mm) ------- --- Install --- ^ ---- Order ------ 涑 --- (Please read the notes on the back before filling this page) A7 B7
性質，遂將多於S含量之Μη量 喊緩由硫造成的有害作用。然 403930 五、發明説明（？） 退。因此，Cu添加量之上限係決定爲1.0重量％。此外(^爲 造成在熱輥壓期間使厚板或錠易於碎裂之紅脆性。更隹地 Cu量爲0.95重量％或更少，且進一步希望爲0.90重量％或更 少。 其他無法避免之雜質包括，正常包含於鋼材料中之痕 量元素’例如S、C、Si、P、A1，以及包含於部分熔融材 料所使用之鐵碎片中的合金元素，例如Cr、Ni、Mo、Ti、 V、Nb、W。 硫殘餘在鋼中，會增加蝕刻速率，並造成該鋼板之經 蝕刻表面粗糙。換言之，硫爲一種減弱該鋼可蝕刻性之元 素。而且，硫誘發鋼之脆性，並使鋼之物理性質惡化，所 以希望硫之含量儘可能地少。正常地，爲使鋼避免由硫所 引起之脆化，並保持其 加入，以形成MnS而使_ 而，MnS對於因硫所引蝕刻性減低，並無任何影響 。於是，將S含量限定於0.025重量％或更少，更佳地其爲 0.023重量％或更少，且進一步希望爲0.020重量％或更少。 碳係於蔭罩用鋁脫氧鎭靜鋼板製造方法中之脫碳-退火 期間被脫碳，故鋼板中之C含量，正常爲0.001重量％或更 少。若需要，將鋼板中之C含量限定於0.001重量°/。或更少 。碳係經固態地溶於且塡間隙式地存在於鋼中，並於扁平 罩之壓製成形期間，誘導發生拉伸變形，其使得扁平罩產 生不均与伸長。因此，鋼中之碳含量應嚴格加以控制。矽 會與蝕刻溶液反應，而導致氯化鐵溶液退化。而且，Si係In nature, the amount of Mη greater than the content of S is called to alleviate the harmful effects caused by sulfur. Ran 403930 V. Description of the invention (?) Retire. Therefore, the upper limit of the amount of Cu added is determined to be 1.0% by weight. In addition, ^ is the red brittleness that makes the thick plate or ingot easy to break during hot rolling. More Cu is 0.95 wt% or less, and further desirably 0.90 wt% or less. Others cannot be avoided Impurities include trace elements normally contained in steel materials such as S, C, Si, P, A1, and alloying elements contained in iron fragments used in partially molten materials, such as Cr, Ni, Mo, Ti, V, Nb, W. Sulfur remains in the steel, which will increase the etching rate and cause the etched surface of the steel plate to be rough. In other words, sulfur is an element that weakens the etchability of the steel. Moreover, sulfur induces brittleness of the steel, and Deteriorate the physical properties of steel, so it is hoped that the content of sulfur is as small as possible. Normally, in order to avoid the embrittlement caused by sulfur and keep it added to form MnS, MnS is responsible for The etchability is reduced without any effect. Therefore, the S content is limited to 0.025% by weight or less, more preferably 0.023% by weight or less, and further desirably 0.020% by weight or less. Carbon is based on Aluminium deoxygenation for shadow mask During the decarburization-annealing process in the sheet manufacturing method, the C content in the steel sheet is normally 0.001% by weight or less. If necessary, the C content in the steel sheet is limited to 0.001% by weight or less. Carbon is dissolved in the solid state and exists in the steel in a gap manner, and during the press forming of the flat cover, tensile deformation is induced, which causes the flat cover to have unevenness and elongation. Therefore, the carbon content in steel should be Strict control. Silicon will react with the etching solution, which will cause the degradation of the ferric chloride solution. Moreover, the Si system
It ------------β------訂------練 - - (請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） 經濟部智慧財產局員工消費合作社印製 403930 A7 B7 五、發明説明（\ ο) 固態地溶於鋼中，其使鋼變得脆化，所以越少Si越佳。當 鋼中之Si含量爲〇.〇4重量％或更多時，則上述脆裂顯著。於 是’將鋼中之Si含量限定於不多於〇.〇4重量％。磷爲使鋼變 得脆化之元素，而因此鋼中之P含量應嚴格加以控制。經由 正常製鋼方法，可獲得其中含有不多於0.015重量％P之鋼 。於是，若需要，將鋼中之P含量限定於0.015重量％或更 少。鋁於製鋼方法中係做爲脫氧劑，以增進鋼之潔淨度。 而且，A1殘餘在鋼中會與n反應而形成A1N，其有效地抑制 由N所引起之不均勻伸長。然而，若含有過多A!，該鋼通 過固體溶液硬化時會脆裂，除此之外，其可蝕刻性亦受減 損。經由正常製鋼方法，必然能獲得其中含有不多於0.1重 量。/WU之鋼。於是，若需要，將鋼中之A1含量限定於0.1重 量％或更少。It ------------ β ------ Order ------ Practice--(Please read the precautions on the back before filling out this page) Staff Consumption of Intellectual Property Bureau of the Ministry of Economic Affairs The paper size printed by the cooperative applies the Chinese National Standard (CNS) A4 specification (210 × 297 mm) Printed by the employee's consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 403930 A7 B7 V. Description of the invention (\ ο) Solidly soluble in steel Steel becomes brittle, so the less Si is better. When the Si content in the steel is 0.04% by weight or more, the above-mentioned embrittlement is remarkable. Therefore, the content of Si in the steel is limited to not more than 0.04% by weight. Phosphorus is an element that embrittles steel, and therefore the P content in steel should be strictly controlled. Through normal steel making methods, steels containing not more than 0.015% by weight of P can be obtained. Therefore, if necessary, the P content in the steel is limited to 0.015% by weight or less. Aluminum is used as a deoxidizer in the steel making method to improve the cleanliness of the steel. Moreover, the A1 residue in the steel reacts with n to form A1N, which effectively suppresses the uneven elongation caused by N. However, if it contains too much A !, the steel will be brittle when hardened by a solid solution, and in addition, its etchability will be reduced. Through normal steelmaking methods, it is unavoidable that it contains not more than 0.1 weight. / WU Steel. Therefore, if necessary, the A1 content in the steel is limited to 0.1% by weight or less.
Cr、Ni、Mo、Ti、V、Nb及W爲非真正力口至鋼的元素 ，而是原先即存在碎片或其他用於鋁脫氧鎭靜鋼板用熔融 材料者中之殘餘物。此等元素係固態地溶於鋼中，以影響 固體溶液硬化作用，因而增進鋼之強度。於是，若需要， 將各元素限定於0.5重量％或更少，且更佳地爲〇.3重量％或 更少。 以下爲一些對本發明蔭罩用鋁脫氧鎭靜鋼板之製造方 法的補充說明。開路線圈形鋼板之退火作用係以（630至 700)°C X(5至20)小時+ (700至860)°C X(5至1〇)小時的熱歷 史進行’其基於下列理由。於第一退火歩驟中’ 630至7〇0 °C之溫度主要供進行脫碳作用，而於第二退火步驟中，700 I--------J--装------訂------線 (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家榡準（CNS ) A4見格（210X 297公釐） 經濟部智慧財產局員工消費合作杜印製 403930 A7 ___ B7 _ 五、發明説明（丨I ) 至860°C之溫度係爲了已離析元素之擴散與分散。當溫度不 高於630°C時，該脫碳反應速率變低，而當溫度不低於860 它時，該鋼板變形而使該鋼板表面容易互相黏住。因此， 溫度之上限定爲860°C。上述係爲二步驟退火之說明。然而 ，至少以增加退火方法產量之觀點而言，一步驟退火係可 利用的。當經熱輥壓鋼板中之C含量大約爲0.04重量％時， 實質上所有鋼將由於該溫度範圍600至830°C之α-Fe組成， 以致可能藉由以(600至830)°C X (5至20)小時的熱歷史進行 之一步驟脫碳-退火作用，而完成已離析元素之脫碳與擴散 作用。 其次，扁平罩退火作用係於550至800°C之溫度範圍內 進行。若該退火溫度低於550°C，則該扁平罩無法充分藉由 退火作用軟化，且該材料之硬度過高。另一方面，若溫度 超過800°C，該鋼板會變形且無法供使用作爲蔭罩。-10至 +30°C之露點範圍係根據被吸收入鋼中之N量主要取決於露 點之事實而決定得。因爲經確定，露點變得越低時，則有 越多量之N容易被吸收入鋼中，遂將露點之下限定爲-l〇°C 。相對地，因爲若露點太高時，蔭罩容易生鏽，故決定露 點之上限爲+30°C。退火大氣爲一種無氧環境，因爲欲將主 要含有Fe之鋼板加熱至高溫。爲能產生無氧之環境，通常 使用工業上低成本之氮氣，或氮與氫氣之混合氣體。若不 然，並不特別加以限定，只要另一種低成本之非氧化性氣 體係可供利用的。 ___13______ 本紙浪尺度適用中國國家標準（CNS ) A4規格（2丨0X297公釐） --------!--装------訂------練 (請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 403930 Α7 Β7 克、發明説明（丨〆） [實施例] 根據以下實施例，更詳盡地描述本發明。具有如表1中 所列示之化學組成的鋁脫氧鎭靜鋼板，係藉由熔融、精煉 、連續鑄製、熱輥壓、初次冷輥壓、脫碳-退火及第二次冷 輥壓而製得。於精煉過程中，係將該鋼進行Μη、N及CU含 纛調整 '真空-除氣、及A1脫氧作用。於熱輥壓後之鋼板， 各係以具有厚度爲2.0毫米，再藉由初次冷輥壓成形具有厚 度爲0.6毫米之鋼板。脫碳-退火之條件係經選擇爲65〇°C X 10小時+ 750°C X6小時。經由第二次終結冷輥壓，將鋼板 進行輥壓而具有爲0.124至〇·ΐ26毫米之實質上均一的厚度 。於列示於表1中之所獲得鋁脫氧鎭靜鋼板中，該等第1至5 號樣本者具有根據本發明之限定範圍，而調整得之Mn、n 與Cu含量。比較性實施例係由6至9號樣本所表示。表2係 列示於其下完成加壓成形爲扁平罩前，所進行之退火作用 的退火條件；於退火後之N量；當對接受上述退火之材料 ，藉由使用TENSILON完成抗張測試時，是否出現不規則 之扭曲變形；以及做爲經由蝕刻試驗（其係於下述條件下 完成）所測量得結果的蝕刻係數値。 蝕刻條件如下。鋁脫氧鎭靜鋼板樣本表面之光阻型點 孔的孔直徑爲110微米。使用氯化鐵做爲蝕刻溶液，其經調 整成具有濃度爲48°Be (玻美度）且溫度爲70°c，並以噴霧壓 力爲0.3 MPa歷時100秒進行噴霧。以300個孔/每種樣本測 量蝕刻係數値，而獲得平均値與離差(σ)。 蝕刻係數之測定包含，對鋼板之一側面表面蝕刻，並 一 14 $紙張尺度適ϋ國家標準（CNS ) Α4規格（210X 297公釐) "~~" ： ：~ 一—装------訂------線 (請先聞讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 403930 A7 B7 五、發明説明（〇 ) 計算蝕刻深度對側面蝕刻之比値。 蝕刻係數=蝕刻深度/側面蝕刻 v〇 οο u> NJ — mm 〇 〇 〇 〇 LA ο ο ο ο 〇\ ο ο ο ο ΟΝ ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο fv 垄 Ιιπίι 卿 ο ο ο ο ο ο ο ο ο ο to ο ο ο ο ο ο ο ο Μ ο ο ο CO ο UJ to ο UJ ο UJ ο UJ ο ο ο to '-J Ό ο Ν) ΟΟ Ln ο ο to 00 u> ο ο s D ο ο ο σ\ ο ο ο οο ο ο ο ο ο ο ο ο ο Ν) Ο Ο Ο ν〇 ο ο ο 〇\ ο ο ο οο ο ο ο ο ο Ο ο ο L/\ ο ο ο 為 ο ο ο ο οο οο ο ο Ν) ο ο Ο ο to ο ο ο •Β* ο ο ο ο 為 ο ο ο ο '-a C/D ο ο ο to UJ ο ο ο α\ 為 ο ο ο 办 ο ο ο 私 οο ο ο ο ο ο ο ο ο ο UJ ο ο ο Ό\ ο ο ο UJ z ο ο -Cw Ui ο ο 4^ ο ο ο ο 办 ο ο L-Λ ο ο to ο ο ο ο ο ο σ\ UJ > ο ο ο ο ο ο \〇 ο ο ο οο ο SO ο ο ο ο ο so ο ο ο ο ο n ο ο -L·. «-Λ ο ο UJ ο ο ο ο ο 為 ο ο 各 οο ο ο ο ο ο ο ο ο -C. ο ο Un n •n ο ο ΓΟ ο ο ο U-) ο ο ο to 0C ο ο to ο ο LO NJ ο ο UJ ο ο ο to 0C ο ο U) ο ο to ο z r-r rr- 一 ν~τ US&i. r~r 露 室 滅 ir η ^t· i^r 崦 察 η m 室 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公楚） -----.--^--^------1T------^ , (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消费合作社印製 403930 at Β7 五、發明説明（\iV)Cr, Ni, Mo, Ti, V, Nb, and W are elements that are not genuine joints to the steel, but are residues that originally existed in fragments or other molten materials used for aluminum deoxidizing and quiet steel plates. These elements are dissolved in steel in a solid state to affect the solid solution hardening effect, thereby improving the strength of the steel. Therefore, if necessary, each element is limited to 0.5% by weight or less, and more preferably 0.3% by weight or less. The following are some supplementary explanations of the method for manufacturing the aluminum deoxidizing and quieting steel sheet for shadow masks of the present invention. The annealing of the open-coil-shaped steel sheet is performed at a thermal history of (630 to 700) ° C X (5 to 20) hours + (700 to 860) ° C X (5 to 10) hours' for the following reasons. In the first annealing step, a temperature of '630 to 700 ° C is mainly used for decarburization, and in the second annealing step, 700 I -------- J--pack ---- --Order ------ line (Please read the notes on the back before filling this page) This paper size is applicable to China National Standards (CNS) A4, see the grid (210X 297 mm) Employees of the Intellectual Property Bureau of the Ministry of Economy Cooperative Du printed 403930 A7 ___ B7 _ 5. Description of the invention (丨 I) The temperature to 860 ° C is for the diffusion and dispersion of the isolated elements. When the temperature is not higher than 630 ° C, the decarburization reaction rate becomes low, and when the temperature is not lower than 860, the steel sheet is deformed so that the surfaces of the steel sheets are easily adhered to each other. Therefore, the temperature is limited to 860 ° C. The above is a description of two-step annealing. However, at least from the viewpoint of increasing the yield of the annealing method, one-step annealing is available. When the C content in the hot-rolled steel sheet is about 0.04% by weight, virtually all steels will have an α-Fe composition in the temperature range of 600 to 830 ° C, so it is possible to use (600 to 830) ° CX ( The thermal history of 5 to 20) hours performs one step of decarburization-annealing, and completes the decarburization and diffusion of the separated elements. Secondly, the flat mask annealing is performed in a temperature range of 550 to 800 ° C. If the annealing temperature is lower than 550 ° C, the flat cover cannot be sufficiently softened by the annealing effect, and the hardness of the material is too high. On the other hand, if the temperature exceeds 800 ° C, the steel sheet is deformed and cannot be used as a shadow mask. The dew point range of -10 to + 30 ° C is determined based on the fact that the amount of N absorbed into the steel mainly depends on the dew point. Because it is determined that as the dew point becomes lower, a larger amount of N is easily absorbed into the steel, so the lower limit of the dew point is limited to -10 ° C. In contrast, if the dew point is too high, the shadow mask is liable to rust, so the upper limit of the dew point is determined to be + 30 ° C. The annealing atmosphere is an oxygen-free environment because it is intended to heat a steel sheet mainly containing Fe to a high temperature. In order to produce an oxygen-free environment, industrially low-cost nitrogen or a mixed gas of nitrogen and hydrogen is usually used. If not, it is not particularly limited as long as another low-cost non-oxidizing gas system is available. ___13______ This paper scale is applicable to China National Standard (CNS) A4 specification (2 丨 0X297 mm) --------!-Installation ------ order ------ practice (please read first Note on the back, please fill in this page again.) Printed on 403930 Α7 Β7 grams by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, Invention Description (丨 发明) [Examples] The present invention will be described in more detail based on the following examples. Aluminum deoxidized quiet steel plates with chemical compositions as listed in Table 1 are obtained by melting, refining, continuous casting, hot rolling, primary cold rolling, decarburization-annealing, and second cold rolling. be made of. During the refining process, the steel was subjected to Mn, N, and CU adjustments, including vacuum-degassing and A1 deoxidation. Each of the steel sheets after hot rolling was a steel sheet having a thickness of 2.0 mm, and a steel sheet having a thickness of 0.6 mm was formed by first cold rolling. The conditions of decarburization-annealing are selected as 65 ° C X 10 hours + 750 ° C X 6 hours. After finishing the cold rolling for the second time, the steel sheet was rolled to have a substantially uniform thickness of 0.124 to 26 mm. In the obtained aluminum deoxidized quiet steel sheets listed in Table 1, those Nos. 1 to 5 have the Mn, n, and Cu contents adjusted according to the scope of the present invention. Comparative examples are represented by samples 6-9. Table 2 series shows the annealing conditions for the annealing effect before the pressure forming into a flat cover is completed below; the amount of N after annealing; when the material subjected to the above annealing is subjected to a tensile test by using TENSILON, Whether irregular distortion occurs; and the etching factor 値, which is a result measured by an etching test (which is performed under the following conditions). The etching conditions are as follows. The diameter of the photoresistive dot holes on the surface of the sample of the aluminum deoxidized static steel plate was 110 micrometers. Ferric chloride was used as the etching solution, which was adjusted to have a concentration of 48 ° Be (glassiness) and a temperature of 70 ° c, and sprayed at a spray pressure of 0.3 MPa for 100 seconds. The etching coefficient 値 was measured at 300 holes / sample, and the average 値 and dispersion (σ) were obtained. The measurement of the etching coefficient includes etching one side surface of the steel plate, and a 14 $ paper size conforms to the national standard (CNS) A4 specification (210X 297 mm) " ~~ " --- Order ------ line (please read the notes on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 403930 A7 B7 V. Description of the invention (〇) Calculate the etching depth on the side Etching ratio 値. Etching factor = etching depth / side etching v〇οο u > NJ — mm 〇〇〇〇〇LA ο ο ο ο ο \ ο ο ο ο ΟΝ ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο 424 -J Ό ο Ν) ΟΟ Ln ο ο to 00 u > ο ο s s ο ο ο σ \ ο ο ο ο ο ο ο ο ο ο ο ο ο ο Ν) Ο Ο Ο νο ο ο ο ο ο ο ο ο ο ο ο ο οο ο ο ο ο ο ο ο L / \ ο ο ο is ο ο ο ο ο ο ο ο ο Ν) ο ο ο to ο ο ο • Β * ο ο ο ο is ο ο ο '-a C / D ο ο ο to UJ ο ο ο α \ is ο ο ο Do ο ο ο Private ο ο ο ο ο ο ο ο ο UJ ο ο ο ο Ό \ ο ο ο UJ z ο ο -Cw Ui ο ο ο 4 ^ ο ο ο ο Office ο ο L-Λ ο ο to ο ο ο ο ο ο σ \ UJ > ο ο ο ο ο ο \ ο ο ο ο ο ο SO ο ο ο ο so ο ο ο ο ο n ο ο -L ·. «-Λ ο ο UJ ο ο ο ο ο is ο ο each ο ο ο ο ο ο ο ο ο -C. ο ο Un n • n ο ο ΓΟ ο ο ο U-) ο ο to ο to 0C ο ο to ο ο LO NJ ο ο UJ ο ο ο to 0C ο ο U) ο to ο z rr rr- ν ~ τ US & i. r ~ r exposed room ir η ^ t · i ^ r 崦 Check η m The paper size of this paper applies the Chinese National Standard (CNS) A4 specification (210X 297 Gongchu) --- --.-- ^-^ ------ 1T ------ ^, (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 403930 at Β7 Five, invention description (\ iV)
S 2)寐斜¾龙(鵲锭>寐)iva璉fMnfm^ (請先閲讀背面之注意事項再填寫本頁) -装. ,-¾ 16 本紙張尺度適用中國國家標準（CNS ) Λ4说格（21〇X297公釐) 403930 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明説明（/ ) 於表2中之樣本A顯示，藉由將表1中第1號樣本鋼板退 火所製備得之鋼板的結果。樣本A至D、G、Η、J、L與Μ 顯示藉由將本發明鋼板置於根據本發明之條件下退火戶斤$ 備得之鋼板的結果。相反地，樣本E (使用表1中第2號樣本 鋼板)與樣本K呈現不規則之扭曲變形，因爲此等樣本1鋼•板 係於900t之溫度下進行退火，其會增加氮-吸收量。又’ 樣本F與I之鋼板係於爲-20°C之露點下進行退火；其會增加 氮-吸收量。再者，樣本N之鋼板(使用表1中第2號樣本鋼板 )含有少許Μ之Μη，所以其在抗張強度及生產強度上較差 。同時，其含有少許量之Cu，所以其呈現出少於2.8之低蝕 刻係數値，且於可蝕刻性方面較差。樣本0之鋼板(使用表1 中第6號樣本鋼板)含有大量之Μη，所以其係存在其中氮吸， 收量大之情形下。樣本Ρ之鋼板含有如本發明所指定量之-Μη與Ν，其不造成任何不規則扭曲變形，但是其Cu含量大 於1.0重量％，幾乎對改善可蝕刻性無功效。樣本Q之鋼板 ，其最先從含有大量N之材料鋼製備得，復於退火期間吸 收氮，而造成不規則之扭曲變形發生。 [本發明之功效] 如上所解釋說明，本發明之蔭罩用鋁脫氧鎭靜鋼板， 本發明之蔭罩，及倂入本發明蔭罩之CRT，具有優良的可 壓製成形性。同時，彼等具有優良可蝕刻性，以使倂入本 發明蔭罩之CRT，可獲得高品質畫面。再者，因爲本發明 鋼板具有大的蝕刻係數値，故能夠滿足對其點孔間距須相 本紙張尺度適用中國國家標隼（CNS ) A4規格（210X 297公瘦） ---I -------装------訂------線 - , (請先閱讀背面之注意事項再填寫本頁) 403930 A7 B7 五、發明説明（4) 當窄且小之高淸晰度蔭罩的要求。 (請先閲讀背面之注意事項再填寫本頁) •装· 訂 線 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) A4規格（2丨Ο X 297公釐）S 2) 寐 Inclined ¾ Long (鹊 ingots > 寐) iva 琏 fMnfm ^ (Please read the precautions on the back before filling out this page) -Packing., -¾ 16 This paper size applies Chinese National Standard (CNS) Λ4 said Grid (21 × 297 mm) 403930 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (/) Sample A in Table 2 is shown by annealing the No. 1 sample steel plate in Table 1 Results of the prepared steel sheet. Samples A to D, G, Η, J, L, and M show the results of steel sheets prepared by annealing the steel sheet of the present invention under the conditions according to the present invention. In contrast, sample E (using the second sample steel plate in Table 1) and sample K exhibited irregular distortion and deformation, because these sample 1 steel plates were annealed at a temperature of 900t, which would increase the nitrogen-absorption capacity. . Also, the steel plates of samples F and I were annealed at a dew point of -20 ° C; it would increase the nitrogen-absorption capacity. In addition, the steel plate of sample N (using the second sample steel plate in Table 1) contains a small amount of Mη, so it is inferior in tensile strength and production strength. At the same time, it contains a small amount of Cu, so it exhibits a low etch coefficient 値 less than 2.8, and is inferior in terms of etchability. The steel plate of sample 0 (using the No. 6 sample steel plate in Table 1) contains a large amount of Mn, so it is in a situation where nitrogen absorption is large and the yield is large. The steel sheet of sample P contained -Mn and N in the amounts specified in the present invention, which did not cause any irregular distortion, but its Cu content was greater than 1.0% by weight, which was almost ineffective in improving etchability. The steel plate of sample Q was first prepared from a steel material containing a large amount of N, and then absorbed nitrogen during annealing, causing irregular distortion. [Effects of the present invention] As explained above, the aluminum deoxidized quiet steel sheet for the shadow mask of the present invention, the shadow mask of the present invention, and the CRT incorporated into the shadow mask of the present invention have excellent press formability. At the same time, they have excellent etchability, so that the CRT incorporated in the shadow mask of the present invention can obtain a high-quality picture. In addition, because the steel sheet of the present invention has a large etching coefficient, it can meet the requirements of the Chinese paper standard (CNS) A4 (210X 297 thin) for the point and hole spacing of the paper. --- I ---- --- Installation ------ Order ------ Line- (Please read the precautions on the back before filling this page) 403930 A7 B7 V. Description of the invention (4) When narrow and small, high clarity Requirements for shadow masks. (Please read the notes on the back before filling in this page) • Binding and Binding Line Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper applies the Chinese National Standard (CNS) A4 specification (2 丨 〇 X 297 mm)