201208783 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種製造不銹鋼薄鋼捲的方法，其係以 熱軋黑皮鋼捲（下文亦稱爲黑皮鋼捲）作爲入料原料，製 造出最小厚度可達0.6 mm的不銹鋼薄鋼捲，該方法包括以 黑皮鋼捲作爲入料原料，接著先對黑皮鋼捲施以噴砂製程 ’之後依序對噴砂製程過後的黑皮鋼捲進行冷軋製程和退 火製程，若需要則進一步再施予噴砂製程，接著進行電解 製程和酸洗製程以去除銹皮，最後施予輥軋調質製程，即 可製得本發明之不銹鋼薄鋼捲產品，因本發明方法所得之 產品的最小厚度可達0.6 mm並具有細緻表面且該製造方法 之成本較爲便宜，進而本發明所製造出的產品可以取代目 前市場上較爲昂貴的2D鋼捲或2B鋼捲。 【先前技術】 目前市場上之不銹鋼鋼捲產品種類主要有下列三種： No. 1鋼捲、2D鋼捲、2B鋼捲，茲將此三種產品之製造方法 分別說明如下：201208783 VI. Description of the Invention: [Technical Field] The present invention relates to a method for manufacturing a stainless steel thin steel coil, which is a hot-rolled black steel coil (hereinafter also referred to as a black steel coil) as a raw material for feeding. A stainless steel thin steel coil with a minimum thickness of 0.6 mm is produced. The method comprises the use of a black steel coil as a feed material, followed by a sandblasting process on the black steel coil, followed by a black steel after the sandblasting process. The roll is subjected to a cold rolling process and an annealing process, and if necessary, further subjected to a sandblasting process, followed by an electrolytic process and a pickling process to remove the scale, and finally a rolling and quenching process is performed to obtain the stainless steel thin film of the present invention. The steel coil product, the product obtained by the method of the invention has a minimum thickness of 0.6 mm and has a fine surface and the cost of the manufacturing method is relatively cheap, and the product manufactured by the invention can replace the more expensive 2D currently on the market. Steel coil or 2B steel coil. [Prior Art] There are three main types of stainless steel coil products on the market: No. 1 steel coil, 2D steel coil, 2B steel coil. The manufacturing methods of these three products are described as follows:
No. 1鋼捲之製造流程如下之說明，請參見圖1 : 係以扁鋼胚1 00作爲原料，經以熱軋製程1 0 1軋延至預 定厚度後得到黑皮鋼捲1 02，黑皮鋼捲1 02再經退火製程 103、噴砂製程104、和酸洗製程105，即可得到白皮鋼捲 106，此白皮鋼捲即是No.1鋼捲。 -5- 201208783 市場上之中、下游廠商一般會考慮自身加工製程之能 力及成本後，而選擇購買厚度通常在6.0~2.0 mm間的No.1 鋼捲作爲入料原料，以將其加工製成有縫之鋼管或儲存桶 、槽、構造件等之產品。但因No. 1鋼捲厚度較厚及表面較 粗糙’故限制了其應用範圍，即，No.l鋼捲無法應用於要 求厚度較薄及表面較光滑之產品。 2D與2B鋼捲之製造流程如下之說明，請參見圖2 : 因爲上述所提之No.l鋼捲的厚度較厚及表面較粗糙， 故無法應用於要求厚度較薄及表面較光滑之產品，爲滿足 市場此種需求而衍生出所謂2D鋼捲。2D鋼捲係以No.l鋼捲 2〇〇作爲入料原料，以冷軋製程201將其厚度變薄（通常至 2.0 mm或低於2.0 mm )，接著依序進行退火製程2 02和酸 洗製程203而得到2D鋼捲204。由於冷軋輥輪表面較爲細緻 ，鋼材經其軋延後可得到較爲光滑之表面，據此2D鋼捲之 表面比No.l鋼捲之表面光滑。2D鋼捲之厚度範圍較廣（通 常最薄至0.2 mm)，然厚度越薄所需冷軋次數會越多，此 主要受冷軋之軋下率及被冷軋不銹鋼之變形性能所影響。 因爲2D鋼捲的厚度已符合一般中、下游廠商做進一步加工 生產、處理的需求標準，所以2D鋼捲可算是目前市場主流 ，但仍有其缺點，因而有2B鋼捲之需求。 2B鋼捲與2D鋼捲皆屬冷軋鋼捲，2B鋼捲是以2D鋼捲 204作爲入料原料，經過輥軋調質製程205之後即成爲2B鋼 捲2 06。由於輥軋調質製程所使用之輥輪表面較2D冷軋輥 201208783 輪表面更爲細緻，故經輥軋調質製程過的2B鋼捲表面會較 2D鋼捲表面更爲光亮與平滑。一般而言，客戶會依其產品 之表面光滑度要求來選擇使用2D鋼捲或2B鋼捲，應用於不 銹鋼捲門、水壺、廚具等產品。 相較於No.1鋼捲，由於2D與2B鋼捲之製造過程中經過 的製程較多，導致其製造成本較高，相對地售價也就較高 ，尤其較現有之No.1鋼捲售價高出甚多。 φ 另外，近年來市場上也有一種較特別的冷軋鋼捲之產 品，其係以黑皮鋼捲3 00作爲原料，直接施以冷軋製程301 ’之後經過退火製程302、噴砂製程3 03、和酸洗製程304 以去除銹皮，而得到特殊冷軋鋼捲305，請參見圖3。此種 產品之訴求主要有：1.改善No.l鋼捲厚度較厚之缺點；2. 以往須以2 D鋼捲才可供應之厚度，現此種產品即可供應； 3.相較於2D鋼捲，由於此種產品製造經過之製程較少，故 成本與售價皆較2D鋼捲爲低；然此種產品雖改善了 No.l鋼 φ 捲表面粗糙之缺點，但若與2D或2B相比其表面粗糙度仍較 2D與2B偏粗甚多及表面易有殘銹等問題，故仍不易爲客戶 所接受，而有其使用上之限制。 另外，我國專利申請案公開號第201006934「不銹鋼 超薄白皮鋼捲的製造方法」係揭示一種以黑皮鋼捲直接進 行冷軋而得之白皮鋼捲的製造方法，但經由該方法所獲得 之白皮鋼捲的粗糙度如下：約2.0 pm(Ra) (3 04鋼種） 和約1.7 0 pm(Ra) ( 43 0鋼種），尙無法達到市場上一般 所供應之2D與2 B鋼捲之表面粗糙度的水準，而無法有效取 201208783 代2D與2B鋼捲之市場。 綜上所述，目前市場上之不銹鋼鋼捲產品種類的確仍 存有可擴充之空間，以創造出厚度比現有之No. 1鋼捲之厚 度更薄且表面粗糙度與2D或2B鋼捲之表面粗糙度相當但成 本和售價比2D或2B鋼捲低之新產品；因此，如何設計出一 種可行的製造方法以達到此一目標，是爲市場所期待》 【發明內容】 本發明之目的係提供一種經濟型冷軋不銹鋼薄鋼捲之 製造方法，以製造出厚度比現有之No.1鋼捲之厚度更薄且 表面粗糙度與2D或2B鋼捲之表面粗糙度相當但成本和售價 比2D或2B鋼捲低之不銹鋼薄鋼捲產品，以滿足市場需求。 本發明係提供一種製造不銹鋼薄鋼捲之方法，其包括 下列步驟： (a) 以黑皮鋼捲作爲入料原料； (b) 對該黑皮鋼捲施予噴砂製程； (c )對該噴砂過的黑皮鋼捲進行冷軋製程，得到冷 軋鋼捲半成品； (d) 對該冷乳鋼捲半成品進行退火製程； (e) 若需要則對該退火過的鋼捲再度進行噴砂製程 » (f) 進行電解製程與酸洗製程以去除銹皮； (g )最後再施予輥軋調質製程； 即可製得本發明之不銹鋼薄鋼捲產品。 -8 - 201208783 本發明之製造方法的優點在於：係以更經濟方法製得 厚度與表面粗糙度與2D鋼捲或2B鋼捲相當之經濟型冷軋不 銹鋼薄鋼捲。 【實施方式】 有關本發明之發明內容和特徵及其他技術內容、特點 與功效，係配合參考圖4之一個較佳實例的詳細說明，而 φ 清楚的呈現。The manufacturing process of No. 1 steel coil is as follows. Please refer to Figure 1: The flat steel embryo 1 00 is used as the raw material, and the black-rolled steel coil is obtained by rolling the hot rolling process to a predetermined thickness. The steel coil 102 is further subjected to an annealing process 103, a sand blasting process 104, and a pickling process 105 to obtain a white steel coil 106, which is a No. 1 steel coil. -5- 201208783 In the market, middle and downstream manufacturers generally consider the ability and cost of their own processing process, and choose to purchase No.1 steel coil with a thickness of usually 6.0~2.0 mm as raw material for processing. Products with seamed steel pipes or storage tanks, tanks, structural parts, etc. However, the No. 1 coil has a thicker thickness and a rougher surface, which limits its application range. That is, the No. 1 coil cannot be applied to products requiring a thinner thickness and a smoother surface. The manufacturing process of 2D and 2B steel coils is as follows. Please refer to Figure 2: Because the above mentioned No.1 steel coil is thicker and rougher, it cannot be applied to products requiring thinner thickness and smoother surface. In order to meet this demand in the market, so-called 2D steel coils are derived. The 2D steel coil is made of No. 1 steel coil 2〇〇 as the raw material for feeding, and its thickness is thinned by cold rolling process 201 (usually to 2.0 mm or less), followed by annealing process 02 and acid. The process 203 is washed to obtain a 2D steel coil 204. Since the surface of the cold-rolled roller is finer, the steel can be rolled to obtain a smoother surface, and the surface of the 2D steel coil is smoother than the surface of the No. 1 steel coil. 2D steel coils have a wide range of thicknesses (usually as thin as 0.2 mm), but the thinner the thickness, the more cold rolling is required, which is mainly affected by the cold rolling reduction rate and the deformation properties of cold rolled stainless steel. Because the thickness of 2D steel coils has met the demand standard for further processing and processing by middle and downstream manufacturers, 2D steel coils can be regarded as the mainstream in the current market, but there are still some shortcomings, so there is a demand for 2B steel coils. Both the 2B steel coil and the 2D steel coil are cold-rolled steel coils, and the 2B steel coil is a 2D steel coil 204 as a raw material for the feed. After the rolling and quenching and tempering process 205, it becomes a 2B steel coil 06. Since the surface of the roller used in the rolling and tempering process is more detailed than the surface of the 2D cold rolling roller 201208783, the surface of the 2B steel coil which has been subjected to the rolling and tempering process will be brighter and smoother than the surface of the 2D steel coil. In general, customers will choose to use 2D steel coils or 2B steel coils according to the surface smoothness requirements of their products, and apply them to stainless steel rolling doors, kettles, kitchen utensils and other products. Compared with No.1 steel coil, due to the many processes in the manufacturing process of 2D and 2B steel coils, the manufacturing cost is higher, and the relative selling price is higher, especially compared with the existing No. 1 steel coil. The price is much higher. φ In addition, in recent years, there is also a special cold-rolled steel coil product on the market, which uses black steel coil 3000 as raw material, directly applied cold rolling process 301 ' after annealing process 302, sand blasting process 03, and The pickling process 304 removes the scale to obtain a special cold rolled coil 305, see Figure 3. The appeals of such products mainly include: 1. The shortcomings of improving the thickness of the No. 1 steel coil; 2. The thickness that can be supplied by the 2D steel coil in the past, the product can be supplied; 3. Compared with 2D steel coil, because the manufacturing process of this product is less, the cost and price are lower than 2D steel coil; although this product improves the surface roughness of No.l steel φ roll, but if it is with 2D Compared with 2B, the surface roughness is still much thicker than 2D and 2B, and the surface is prone to rust and other problems, so it is still not easy for customers to accept, but there are restrictions on its use. In addition, the method for producing a stainless steel ultra-thin white steel coil is disclosed in Japanese Patent Application Publication No. 201006934, which discloses a method for producing a white-skin steel coil obtained by directly cold rolling a black-steel steel coil. The roughness of the obtained white steel coil is as follows: about 2.0 pm (Ra) (3, 04 steel) and about 1.7 0 pm (Ra) (43 0 steel), which cannot meet the 2D and 2 B steels generally available on the market. The level of surface roughness of the rolls is not effective for the market of 201208783 generation 2D and 2B coils. In summary, there is still room for expansion of stainless steel coil products on the market to create thicknesses thinner than existing No. 1 coils and surface roughness with 2D or 2B coils. A new product with a similar surface roughness but a lower cost and price than a 2D or 2B steel coil; therefore, how to design a feasible manufacturing method to achieve this goal is expected for the market. [Summary of the Invention] The invention provides a method for manufacturing an economical cold-rolled stainless steel thin steel coil to produce a thickness thinner than the thickness of the existing No. 1 steel coil and the surface roughness is comparable to the surface roughness of the 2D or 2B steel coil but cost and sale. Stainless steel thin steel coil products with a lower price than 2D or 2B steel coils to meet market demand. The present invention provides a method of manufacturing a stainless steel thin steel coil comprising the steps of: (a) using a black steel coil as a feed material; (b) applying a sandblasting process to the black steel coil; (c) The blasted black steel coil is subjected to a cold rolling process to obtain a cold-rolled steel coil semi-finished product; (d) an annealing process is performed on the cold-rolled steel coil semi-finished product; (e) the annealed steel coil is re-blasted if necessary. (f) performing an electrolytic process and a pickling process to remove scale; (g) finally applying a rolling and tempering process; and the stainless steel thin steel coil product of the present invention can be obtained. -8 - 201208783 The manufacturing method of the present invention is advantageous in that an economical cold-rolled stainless steel thin steel coil having a thickness and surface roughness comparable to a 2D steel coil or a 2B steel coil is produced in a more economical manner. [Embodiment] The contents and features of the present invention and other technical contents, features and effects are described in detail with reference to a detailed description of a preferred embodiment of Fig. 4, and φ is clearly presented.
參閱圖4，本發明之經濟型冷軋不銹鋼薄鋼捲之製造 方法的一較佳實例，係可以製造出最小厚度約0.6 mm的經 濟型冷軋不銹鋼薄鋼捲408，以取代市場上對2D鋼捲或2B 鋼捲之需求。 本發明之製造方法係以黑皮鋼捲400作爲入料原料， 首先對此黑皮鋼捲400進行噴砂製程401，此一噴砂製程 401之目的是先初步去除黑皮鋼捲400表面之熱軋銹皮（銹 φ 皮去除率不低於20% )，接著進行冷軋製程402，藉著軋下 率爲20-8 0% (較佳地約50~70% )之冷軋，而獲得最小厚 度約0.6 mm之冷軋鋼捲半成品，然後對該冷軋鋼捲半成品 進行退火製程403，此退火製程403之主要目的是要消除來 自熱軋與冷軋之加工應力，以使鋼材軟化，使鋼材於後續 或客戶冷加工時易於變形，該退火製程之進行方式係將鋼 材通過一溫度在1000~1 200°C的退火爐，然後在冷卻過程 中藉由循環冷卻水以不低於20°C /S冷卻速率將鋼材急速冷 卻至4 5 0 °C以下。 201208783 退火製程4 03結束後，接下來的步驟可分爲二種方式 進行，此係因爲2D鋼捲與2B鋼捲對表面粗糙度有不同之要 求，2D鋼捲之表面粗糙度一般約爲0.4~0.6pm(Ra)，而 2B鋼捲之表面粗糙度一般約爲0.2〜0.4ym(R〇 ，故針對 不同粗糙度需求來選擇後續生產方式：若待生產之產品對 粗糙度之要求需達到2D鋼捲之粗糙度，則接著進行噴砂製 程404、電解製程405與酸洗製程406以完全去除鋼捲表面 之銹皮，此一噴砂製程404之目的是要將熱軋殘餘銹皮與 退火製程40 3所產生之銹皮進一步去除，另由於噴砂之鋼 珠噴擊鋼捲表面，因此造成表面較爲粗糙：若待生產之產 品對粗糙度之要求需達到2B鋼捲之粗糙度，則省略噴砂製 程404之步驟，而直接進行電解製程405與酸洗製程406， 且由於省略了噴砂製程404，可完全避免噴砂之鋼珠噴擊 鋼捲表面所造成表面較爲粗糙問題，故可獲得較爲細緻的 表面；至此，即可獲得一厚度較No. 1鋼捲更薄及表面較 No.1鋼捲更細緻之冷軋鋼捲。接下來，對此冷軋鋼捲進行 輥軋調質製程407而得到本發明之經濟型冷軋不銹鋼薄鋼 捲產品408，其粗糙度可控制至約低於0.6 μπι，請參考下 面表1，此輥軋調質製程407之主要目的是藉由表面拋光過 的輥輪對鋼捲表面進行輕軋延，由於輥輪表面相當光滑， 藉由轉印效應可大幅改善冷軋鋼捲表面之粗糙情形及其亮 度。 由上述說明並配合圖4即可清楚了解本發明之製造方 法，本發明之製造方法的特點是，於冷軋製程402前先實 -10- 201208783 施一次噴砂製程401，可將酸洗較難去除的熱軋銹皮先予 以大量去除，如此，可避免過多的銹皮於冷軋製程402時 被軋入鋼材內，而造成锈皮更不易去除，據此，該噴砂製 程401係在噴砂轉速爲1500〜2500 rpm (較佳地約2000~ 2500 rpm)之噴砂機進行以去除大量的熱軋銹皮（銹皮去 除率不低於20%，較佳不低於30% )，同時藉由表面較光 滑的輥輪對鋼材軋延之冷軋，可降低鋼材表面粗糙情形。 此外，藉由熱乳銹皮已先被大量去除，而有助於後續 之噴砂製程404 (若有需要）、電解製程405與酸洗製程 406之速度提昇；同時，當生產粗糙度類似2D鋼捲之產品 時，也藉由熱軋銹皮已先被大量去除，而可將退火製程 403後之噴砂製程404之噴砂機轉速大幅降低（例如：800 〜1 8 00 rpm)，以避免過大轉速噴砂對鋼材表面造成過大 的衝擊，進而使表面過於粗糙，以致超出2D鋼捲表面粗糙 度之要求；而當生產粗糙度類似2B鋼捲之產品時，由於省 略了噴砂製程404，可完全避免噴砂之鋼珠噴擊鋼捲表面 所造成表面較爲粗糙問題；接著進行之電解製程405，係 藉由電解方式將鋼捲表面銹皮進一步去除，可避免如單純 以酸洗方式而須以較強酸液除銹進而造成表面較粗糙之問 題；至此，由於大量表面銹皮已被去除，所以可將酸洗製 程406所採用之混酸濃度降低進而提高產速、降低成本；. 上述作法主要目的就是要有效降低鋼捲表面粗糙情形 '避 免殘銹、提高產量、降低成本，最後，再藉由輥軋調質製 程407之轉印效應，再一次提高鋼捲表面之光亮與平滑度 -11 - 201208783 ，而能獲得接近或相當於2D鋼捲或2B鋼捲表面粗糙度及亮 度之鋼捲產品。 由上述說明可知，本發明之經濟型冷軋不銹鋼薄鋼捲 40 8之製造方法，係以黑皮鋼捲400作爲入料原料，先對該 黑皮鋼捲進行噴砂製程401，以大量去除黑皮鋼捲之銹皮 (銹皮去除率不低於20%)，之後進行軋下率爲20-80%之 冷軋製程402，可得到最小厚度約0.6 mm的冷軋鋼捲，接 著進行退火製程403、噴砂製程4〇4 (若需要）、電解製程 405、酸洗製程406、和輥軋調質製程4〇7，以去除銹皮和 改善表面粗糙度，而製造出鋼捲厚度及表面粗糙度可與2D 鋼捲和2B鋼捲相比之經濟型冷軋不銹鋼薄鋼捲產品4〇8， 進而供應中、下游業者進一步加工利用；且由於黑皮鋼捲 400先進行噴砂製程401以去除大量的銹皮，所以後續進行 之冷軋製程402、退火製程403、噴砂製程404 (若需要） 、電解製程405、酸洗製程406、和輥軋調質製程407等都 可以大幅節省生產成本的條件下實施而製造出鋼捲厚度及 粗糙度可與2D鋼捲和2B鋼捲相比之經濟型冷軋不銹鋼薄鋼 捲產品408，以供市場應用。 表1爲以本發明方法所製得之產品與市場上現有之產 品的表面粗糙度之比較，由此表可知，本發明方法所製得 之產品的表面粗糙度已較No.1鋼捲大幅改善且已接近或相 當於2D鋼捲與2B鋼捲之表面粗糖度。 201208783 表 產品類塑 表面粗縫度 Ra (/zm) 市場上現有產品Referring to FIG. 4, a preferred embodiment of the method for manufacturing the economical cold-rolled stainless steel thin steel coil of the present invention can produce an economical cold-rolled stainless steel thin steel coil 408 having a minimum thickness of about 0.6 mm to replace the 2D on the market. Demand for coil or 2B coil. The manufacturing method of the present invention uses the black steel coil 400 as a raw material for feeding. First, the black steel coil 400 is subjected to a sand blasting process 401. The purpose of the sand blasting process 401 is to firstly remove the hot rolling of the surface of the black steel coil 400. The scale (rust φ skin removal rate is not less than 20%), followed by cold rolling process 402, and the minimum is obtained by cold rolling of a rolling reduction rate of 20-8 0% (preferably about 50 to 70%). a cold-rolled steel coil semi-finished product having a thickness of about 0.6 mm, and then an annealing process 403 is performed on the cold-rolled steel coil semi-finished product. The main purpose of the annealing process 403 is to eliminate the processing stress from hot rolling and cold rolling to soften the steel and make the steel It is easy to deform after subsequent or customer cold working. The annealing process is carried out by passing the steel through an annealing furnace at a temperature of 1000~1 200 °C, and then circulating the cooling water at a temperature of not less than 20 ° C /S during the cooling process. The cooling rate rapidly cools the steel to below 4500 °C. 201208783 After the annealing process is finished, the next step can be divided into two ways. This is because the surface roughness of 2D steel coil and 2B steel coil has different requirements. The surface roughness of 2D steel coil is generally about 0.4. ~0.6pm (Ra), and the surface roughness of 2B steel coil is generally about 0.2~0.4ym (R〇, so the subsequent production method is selected for different roughness requirements: if the product to be produced meets the roughness requirements The roughness of the 2D steel coil is followed by a sand blasting process 404, an electrolytic process 405 and a pickling process 406 to completely remove the scale of the surface of the steel coil. The purpose of this sandblasting process 404 is to heat the residual skin and the annealing process. The rust skin produced by 40 3 is further removed, and the blasted steel ball sprays the surface of the steel coil, so the surface is rough: if the roughness of the product to be produced needs to meet the roughness of the 2B steel coil, the blasting is omitted. In the step of the process 404, the electrolysis process 405 and the pickling process 406 are directly performed, and since the blasting process 404 is omitted, the surface of the blasted steel ball sprayed on the steel coil surface can be completely avoided, so that the surface is rough. A more detailed surface is obtained; thus, a cold-rolled steel coil having a thickness thinner than that of the No. 1 steel coil and having a finer surface than the No. 1 steel coil can be obtained. Next, the cold-rolled steel coil is rolled and tempered. Process 407 provides the economical cold rolled stainless steel thin steel coil product 408 of the present invention, the roughness of which can be controlled to be less than about 0.6 μm. Please refer to Table 1 below. The main purpose of the rolling and tempering process 407 is by surface. The polished roller gently rolls the surface of the coil. Since the surface of the roller is relatively smooth, the roughening condition and brightness of the surface of the cold-rolled coil can be greatly improved by the transfer effect. It is clear from the above description and with FIG. Knowing the manufacturing method of the present invention, the manufacturing method of the present invention is characterized in that a sandblasting process 401 is applied before the cold rolling process 402, and the hot-rolled scale which is difficult to remove by pickling is removed first. In this way, excessive scale can be prevented from being rolled into the steel material during the cold rolling process 402, and the scale is more difficult to remove. Accordingly, the sandblasting process 401 is at a blasting speed of 1500 to 2500 rpm (preferably about 2000~ 2500 rpm) The sand blasting machine is carried out to remove a large amount of hot-rolled scale (the scale removal rate is not less than 20%, preferably not less than 30%), and at the same time, the cold rolling of the steel by the smoother surface roller can be reduced. The surface of the steel is rough. In addition, the hot rust has been removed a lot, which helps the subsequent sandblasting process 404 (if necessary), the speed of the electrolytic process 405 and the pickling process 406, and at the same time, when When the roughness is similar to that of the 2D steel coil, the hot-rolled scale is first removed a lot, and the speed of the sand blasting machine 404 after the annealing process 403 can be greatly reduced (for example, 800 to 1 800 rpm). In order to avoid excessive impact of excessive speed blasting on the steel surface, the surface is too rough, which exceeds the surface roughness of the 2D steel coil; and when the production roughness is similar to that of the 2B steel coil, the blasting process 404 is omitted. The problem of rough surface caused by the surface of the steel ball sprayed on the steel coil can be completely avoided; the electrolysis process 405 is further carried out by electrolytically removing the surface scale of the steel coil, thereby avoiding the simple In the acid pickling method, the rust is removed by a strong acid solution to cause a rough surface; thus, since a large amount of surface scale has been removed, the concentration of the mixed acid used in the pickling process 406 can be lowered to increase the production rate and reduce the speed. Cost; The main purpose of the above method is to effectively reduce the surface roughness of the steel coil 'to avoid rust, increase production, reduce costs, and finally, by the transfer effect of the rolling and tempering process 407, once again improve the surface of the coil Brightness and smoothness -11 - 201208783, and can obtain steel coil products that are close to or equivalent to the surface roughness and brightness of 2D steel coil or 2B steel coil. It can be seen from the above description that the manufacturing method of the economical cold-rolled stainless steel thin steel coil 40 8 of the present invention is that the black-skin steel coil 400 is used as a raw material for feeding, and the black-skin steel coil is first subjected to a sand blasting process 401 to remove black in a large amount. The skin of the steel coil (the removal rate of the scale is not less than 20%), and then the cold rolling process 402 with a rolling reduction of 20-80% can obtain a cold-rolled steel coil with a minimum thickness of about 0.6 mm, followed by an annealing process. 403, sandblasting process 4〇4 (if needed), electrolytic process 405, pickling process 406, and rolling and tempering process 4〇7 to remove scale and improve surface roughness to produce steel coil thickness and surface roughness Economical cold-rolled stainless steel thin steel coil products 4〇8, which can be compared with 2D steel coils and 2B steel coils, for further processing by middle and downstream industries; and since the black-skin steel coil 400 is first subjected to a sandblasting process 401 to remove A large amount of scale, so the subsequent cold rolling process 402, annealing process 403, sandblasting process 404 (if needed), electrolytic process 405, pickling process 406, and rolling and tempering process 407 can greatly reduce production costs. Steel produced under conditions Cheap cold rolling stainless steel coil product thickness and the roughness can be compared with the 2D coil 408 coil and 2B, the market for applications. Table 1 is a comparison of the surface roughness of the product obtained by the method of the present invention and the product currently available on the market. From the table, it can be seen that the surface roughness of the product obtained by the method of the present invention has been significantly larger than that of the No. 1 steel coil. Improved and close to or equivalent to the surface roughness of 2D steel coils and 2B steel coils. 201208783 Table Product plastic surface rough seam Ra (/zm) Existing products on the market
No.l鋼捲 特殊冷軋鋼捲 1.5〜2.5 2D鋼捲 2B鋼捲 0·4 〜0.6 0.2-0.4 本發明製得產品 冷軋退火後實施喷砂 冷軋退火後不喷砂 經濟型冷軋鋼捲7 經濟型冷軋鋼捲8 經濟型冷軋鋼捲9 經濟型冷軋鋼捲10 經濟型冷軋鋼捲11 經濟型冷軋鋼捲12 經濟型冷軋鋼捲1 經濟型冷軋鋼捲2 經濟型冷軋鋼捲3 經濟型冷軋鋼捲4 經濟型冷軋鋼捲5 經濟型冷軋鋼捲6 0.41 0.43 0.4 0.45 0.39 0.4 0.2 0.23 0.21 0.2 0.25 0.18 上述僅用於說明本發明而非用於限制本發明之範圍， 因此依本發明申請專利範圍及發明說明內容所做之任何等 效變化與修飾，仍落在本發明所涵蓋之範圍內。 【圖式簡單說明】 圖1係說明No.l鋼捲之製造流程。 圖2係說明2D鋼捲和2B鋼捲之製造流程。 圖3係說明另一冷軋鋼捲之製造流程。 圖4係說明本發明之製造方法的一較佳實例之流程。 -13- 201208783 【主要元件符號說明】 1 0 0 :扁鋼胚 1 0 1 :熱軋製程 102 :黑皮鋼捲 103 :退火製程 104 :噴砂製程 105 :酸洗製程 1 06 : No. 1 鋼捲 200 : No. 1 鋼捲 2 0 1 :冷軋製程 202 :退火製程 203 :酸洗製程 204 ： 2D鋼捲 205 :輥軋調質製程 206 ： 2B鋼捲 3 00 :黑皮鋼捲 3 01 :冷軋製程 302 :退火製程 3 0 3 噴砂製程 3 04 :酸洗製程 3 05 :特殊冷軋鋼捲 400 :黑皮鋼捲 401 :噴砂製程 402 :冷軋製程 201208783 403 :退火製程 404 :噴砂製程 405 :電解製程 406 :酸洗製程 407 :輥軋調質製程 408 :經濟型冷軋薄鋼捲No.l steel coil special cold-rolled steel coil 1.5~2.5 2D steel coil 2B steel coil 0·4~0.6 0.2-0.4 The product obtained by the invention is subjected to cold-rolling annealing and is subjected to sandblasting cold-rolling annealing without sandblasting economical cold-rolled steel coil 7 Economical cold-rolled coils 8 Economical cold-rolled coils 9 Economical cold-rolled coils 10 Economical cold-rolled coils 11 Economical cold-rolled coils 12 Economical cold-rolled coils 1 Economical cold-rolled coils 2 Economical cold-rolled coils 3 Economy Type cold-rolled steel coil 4 economical cold-rolled steel coil 5 economical cold-rolled steel coil 6 0.41 0.43 0.4 0.45 0.39 0.4 0.2 0.23 0.21 0.2 0.25 0.18 The above is only illustrative of the invention and is not intended to limit the scope of the invention, and thus Any equivalent changes and modifications made to the scope of the invention and the description of the invention are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing the manufacturing process of No. 1 steel coil. Figure 2 is a diagram showing the manufacturing process of a 2D steel coil and a 2B steel coil. Figure 3 is a diagram showing the manufacturing process of another cold rolled steel coil. Fig. 4 is a flow chart showing a preferred embodiment of the manufacturing method of the present invention. -13- 201208783 [Explanation of main component symbols] 1 0 0 : Flat steel blank 1 0 1 : Hot rolling pass 102: Black steel coil 103: Annealing process 104: Sandblasting process 105: Pickling process 1 06 : No. 1 Steel Roll 200 : No. 1 Steel coil 2 0 1 : Cold rolling pass 202 : Annealing process 203 : Pickling process 204 : 2D steel coil 205 : Rolling and tempering process 206 : 2B steel coil 3 00 : Black steel coil 3 01 Cold Rolling Process 302: Annealing Process 3 0 3 Sandblasting Process 3 04: Pickling Process 3 05: Special Cold Rolled Steel Roll 400: Black Steel Roll 401: Sandblasting Process 402: Cold Rolling Process 201208783 403: Annealing Process 404: Sandblasting Process 405: Electrolysis Process 406: Pickling Process 407: Rolling and Tempering Process 408: Economical Cold Rolled Steel Roll
-15--15-