200909097 九、發明說明： 【發明所屬之技術領域】 本發明是有關於-種銅模’特別是指—種在氨基確酸 錄鑛浴或硫酸錄鑛浴中，添加適量特定的含罐化合物，以 電鍛方式製作而成，且用於Λ 成且用於㈣液連禱的具有錄填合金鍵層 之銅模。 【先前技術】 立在連鑄作業當中，爆湯（Breakout)是屬於最嚴重的生產 二、外事件’其危害不僅造成生產停頓，導致產量降低及維 蒦費用的相失，更有危害操作人員的安全、損害銅模與輕 輪，其結果損失甚矩，間接影響連鑄作業的後續處理。 又因為鑄胚的各種缺陷，大多起源於銅模品質的優劣 ，所以，在銅模内以鍍層保護的方式來維持銅模的品質， 以確保模内凝固過程的穩定，是使連禱作業順利的重要關 鍵因素之一。 一般習知之純鎳It面的銅模是在氨基續酸錄鍍浴中以 ^鍍的方式鑛覆-層内應力極低的純錦錄層，該純鎖鑛層 是呈粗大柱狀晶結構，而且，該柱狀晶結構之長度和鍍層 之厚度相當，其硬度值約為HV2〇〇 ’當鋼液之連禱作業進 行時，該銅模的表面溫度升高達到如代以上，該純錄鑛層 的硬度值會因此而下降至HV125〜謂5〇，導致該鋼模的^ 磨性降低，縮短該銅模的使用壽命。 因此’為了增加該銅模的耐磨性，提昇其使用壽命， 相關業者即開發出一種具有多重鍍層的銅模，該銅模表面 200909097 第-層為厚度5G〜1GGG" m的純鎳鍍層第二層是利用無電 解錄方式製作的Poiynhe(複層電錄）鑛層，該ρ〇1_鑛層 融點為89ITC，厚度約為〇.06mm，在常溫之硬度為HV4〇〇〜 HV5〇°，當該銅模在辑之環境時，其硬度會提高至 HV_〜HV900’第三層為厚度約〇 〇2麵的硬絡鑛層該 硬絡鑛層疋用於保護該Polynite妒声。 不過，上述之多重鍍層的鋪模，其三層鑛層的製作成 本昂貴且作業複雜’而且，由於該㈣帅⑼層採用無電解 錄之技術，其《速率較慢且鍍層厚度較薄，其厚度僅約 為〇.〇6mm，雖然該多重鍍層之銅模的使用壽命較純錄鑛面 之銅模略長’但是’對於整體耐純的提昇效果有限。 因此’藉由上述說明可知，習知純㈣面之銅模與多 重鍍層之銅模具有以下缺點： 一、銅模的使用壽命較短： 由於該純鎳鍍層呈粗大柱狀晶結構，而且，該柱 狀晶結構之長度和鍍層之厚度相當’當溫度升高時， 該純鎳鍍層的硬度值就會因此而下降，導致該銅模的 耐磨性降低，縮短使用壽命。 二、銅模之修護、電鍍及加工費用較高： 主由於該多重鑛層的銅模，其三層鍍層的製作成本 昂貴且作業複雜，雖然該多重鍍層之銅模的使用壽命 較純錄錢面之銅模略長，但是，銅模鑛覆速率較Z 鍍層厚度較薄，對於整體耐磨性的提昇效果有限^不 僅無去有效提昇使用壽命，更增加了後續的修護、加 200909097 工費用。 無法有效增加產能： 由於上述之純鎳鍍層與多 袅人^ $錢層的鋼模具有僅用 性不佳’或成本花費 = 銅模的_率高，無法 、點使其 的產能。 也增加鋼液之連鑄作業 四 鑄胚品質無法提昇： 作業：述之純錦鍍層與多重鏟層之銅模在鋼液之連鑄 乍業的過程中，其硬度值因溫度升高 ：： 銅模的耐磨性降低，使盆 ㈣邊 ，容易Μ1"❹耗而外露 瑕:“成銅屑陷入鑄胚表層而形成星狀裂縫的品質 不僅Π之’習知將純鎳鑛層或多重鑛層鍍覆在銅模上， 掌：有效地提昇鋼模的使用壽命，其電錄及後續的維 二作業也使成本相對提高，而且，純錦鍍層與多重鍍声之 模的低耐磨性也影響鑄胚的品質及產能。 【發明内容】 因此’本發明之目的’即在提供一種可提昇使用壽命 用於鋼液連鑄的具有鎳磷合金鍍層之銅模。 於疋’本發明之用於鋼液連禱的具有錄鱗合金鑛層之 銅模，包含一銅模本體’以及一鎳磷合金鍍層。 & S鎳；口金鑛層是由錄元素與磷元素所組成且鑛覆在 =銅模本體之表面，其中，該鎳鱗合金鍍層的攝元素之含 範圍為〇.007重量百分比（wt.%)至0.11重量百分比（ 200909097 wt.% )。 本發明之功效在於藉由該鎳磷合金鍍層中的磷元素具 有細化晶粒結構的特性，並且可提高結晶缺陷密度，使該 錄磷合金鍍層硬化而提高整體的硬度值，並且在聽的溫 度環境不易軟化’所以’當該料合金鑛層鑛覆在該銅模 本體之表面時’可提昇該銅模的耐磨性，增加該銅模的使 用哥命。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 、下配δ參考圖式之—個較佳實施例的詳細說明中，將可 清楚的呈現。 參閱圖1，本發明用於鋼液連鑄的具有錄麟合金鍛層之 銅模的較佳實施例’包含—銅模本體卜以及—鎳鱗合金鍛 層2。 該錦碟合金鍍層2是由鎳元素與碟元素所組成且鑛覆 在該銅模本體丨之表面，其中，該鎳磷合金鑛層2的構元 素之含量範圍為〇.〇〇7wt·%至〇.llwt %。 本實施例錦鱗合金鍍層是利用一録基續酸電鍛浴系 統所製成’首先’於氨基石黃酸錄中添加介於1〇mg/i與 3〇〇mg/l之間的亞磷酸來製備鎳磷合金，其中，氨基磺酸鎳 浴之組成為介於263g/丨與450g/1之間的氨基磺酸錄、介於 30g/l與45g/1之間的硼酸’及介於㈣與3_之間的氣化 鎳在45 C且酸驗值為3·3±〇·2的鍍液中，以2A/dm2的直 流電源進行電鍍，藉由電鍍時間的控制，在電流效率1〇〇% 200909097 的前提下，設定電鍍的時間以製備含磷合金鍍層。 本發㈣於鋼液連鑄的具#_合金㈣之銅模亦可 =一般硫酸_浴系統來製作，該硫酸錄錄浴之組成為 ”於225g/1與陶1之間的硫_，介於3Gg/i*45g/k 間的吏、介於聊與60g/1之間的氯化添加介於 版g/1與·mg/1之μ @亞嶙酸，以直流電源進行電鑛。 上述兩者鑛液系統所添加的含碟化合物皆為亞鱗酸， 該錄鱗合金鍍層的磷元素之含量範圍4 0.069wt%至 〇.H)5Wt·%是維持該料合金鍍層之低内應力及耐熱軟化特 性最佳的狀態，當然、’添加的含磷化合物也可以選擇次 酸或亞磷酸與次磷酸的鹽類，不應侷限於本實施例之說明 配合參閱表一，其錢層特性與鍍層碟含量的關係揭露 了鍍層填含量有增加鍍層硬度的效果，當錄層填含量大於 或等於0.069 wt·%時，該鍍層具有較佳的3〇〇£>c耐熱軟化性 ，即在高溫中其硬度維持在一定值且不易軟化。 【表一】鍍層磷含量與鍍層特性的關係 鍍層 鱗含量 (Pwt.%) 硬度 (HV) 硬度（HV) (300°cx 4hrs) 硬度（HV) (300 ° cx 8hrs) 硬度（HV) (400°cx 4hrs) 鋼片上曲 南度（mm) 比較例1 0 200 160 150 150 實驗例2 0.07 284 266 241 231 實驗例3 0.014 281 262 255 241 實驗例4 0.044 286 277 262 245 200909097200909097 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a copper mold, in particular, a compound containing a specific amount of a can-containing compound in an amino acid ore ore sulphate bath. It is made by electric forging and is used for the copper mold with the alloy bond layer for the (4) liquid connection. [Prior Art] In the continuous casting operation, Breakout is the most serious production. Second, the external event's hazard not only causes production stoppage, but also leads to the loss of production and the loss of maintenance costs, and more harmful to operators. The safety, damage to the copper mold and the light wheel, the result is very lossy, indirectly affecting the subsequent processing of continuous casting operations. Because of the various defects of the casting embryo, most of them originate from the quality of the copper mold. Therefore, the quality of the copper mold is maintained in the copper mold by means of plating protection to ensure the stability of the in-mold solidification process. One of the key factors. Generally, the copper mold of the pure nickel It surface is a pure gold layer which is deposited in the amino acid continuous acid plating bath by a plating method, and has a very low internal stress, and the pure lock layer is a coarse columnar crystal structure. Moreover, the length of the columnar crystal structure is equivalent to the thickness of the plating layer, and the hardness value thereof is about HV2〇〇'. When the molten steel is carried out, the surface temperature of the copper mold rises to be higher than the generation, the purity The hardness value of the mining layer is thus lowered to HV125~5, resulting in a decrease in the wearability of the steel mold and a shortening of the service life of the copper mold. Therefore, in order to increase the wear resistance of the copper mold and improve its service life, a related company has developed a copper mold with multiple coatings. The surface of the copper mold is 200909097. The first layer is a pure nickel coating with a thickness of 5G~1GGG" The second layer is a Poiynhe (multi-layer electro-recording) ore layer produced by electroless recording. The ρ〇1_ ore layer has a melting point of 89ITC, a thickness of about 06.06mm, and a hardness of HV4〇〇~ HV5〇 at normal temperature. °, when the copper mold is in the environment, its hardness will increase to HV_~HV900'. The third layer is a hard ore layer with a thickness of about 面2. The hard layer is used to protect the Polynite hum. However, in the above-mentioned multi-plated layering, the three-layered ore layer is expensive to manufacture and complicated in operation'. Moreover, since the (four) handsome (9) layer adopts the technology of electroless recording, its "slow rate and thin coating thickness are thin. The thickness is only about 〇.〇6mm, although the service life of the copper mold of the multiple plating layer is slightly longer than that of the pure copper surface of the mining surface, but the effect on the overall purity resistance is limited. Therefore, it can be seen from the above description that the copper mold of the pure (four) surface and the copper mold of the multiple plating layer have the following disadvantages: 1. The service life of the copper mold is short: since the pure nickel plating layer has a coarse columnar crystal structure, and the column The length of the crystal structure is equivalent to the thickness of the plating layer. When the temperature is raised, the hardness value of the pure nickel plating layer is lowered, resulting in a decrease in wear resistance of the copper mold and a shortened service life. Second, the copper mold repair, plating and processing costs are higher: Mainly due to the copper mold of the multiple layers, the three-layer coating is expensive to manufacture and complicated in operation, although the service life of the multiple-coated copper mold is relatively pure. The copper mold of the money surface is slightly longer, but the copper mold mineral coating rate is thinner than the Z coating thickness, and the overall wear resistance is limited. Not only does it not effectively improve the service life, but also increases the subsequent repair, adding 200009097 Labor costs. Can not effectively increase the production capacity: due to the above-mentioned pure nickel plating and the steel mold of the multi-personal ^$ money layer has poor usability' or cost = copper mold _ rate is high, can not make its capacity. It also increases the quality of the four castings in the continuous casting of molten steel. Job: The pure copper coating and the multi-shovel copper mold are in the process of continuous casting of molten steel. The hardness value increases due to temperature: The wear resistance of the copper mold is reduced, so that the basin (four) side is easy to Μ 1" ❹ 而 外 瑕 瑕 “ “ “ “ “ “ 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成 成The ore layer is plated on the copper mold, and the palm: effectively improves the service life of the steel mold. The electric recording and the subsequent dimension 2 operation also increase the cost relatively. Moreover, the pure gold plating and the multiple plating sound mold have low wear resistance. The nature also affects the quality and productivity of the foundry. [Invention] Therefore, the object of the present invention is to provide a copper mold having a nickel-phosphorus alloy plating layer which can be used for continuous casting of molten steel. A copper mold having a scaly alloy ore layer for use in molten steel, comprising a copper mold body' and a nickel-phosphorus alloy coating. & S nickel; the gold-plated ore layer is composed of a recorded element and a phosphorus element. Covered on the surface of the body of the copper mold, wherein the nickel scale The content of the alloy plating layer is 〇.007 weight percent (wt.%) to 0.11 weight percent (200909097 wt.%). The effect of the present invention is that the phosphorus element in the nickel-phosphorus alloy plating layer has fine crystals. The characteristics of the granular structure, and can increase the density of crystal defects, harden the coating of the phosphorous alloy to increase the hardness value of the whole, and hardly soften in the temperature environment of the listening 'so' when the alloy ore layer of the alloy is coated on the body of the copper mold The surface of the copper mold can improve the wear resistance of the copper mold, and increase the use of the copper mold. [Embodiment] The foregoing and other technical contents, features and effects of the present invention are combined with the δ reference pattern. In the detailed description of a preferred embodiment, it will be clearly shown. Referring to Figure 1, a preferred embodiment of a copper mold having a recording alloy forged layer for steel liquid continuous casting includes a copper mold body. And nickel-nickel alloy forging layer 2. The alloy alloy plating layer 2 is composed of a nickel element and a dish element and is coated on the surface of the copper mold body, wherein the constituent elements of the nickel-phosphorus alloy layer 2 The content range is 〇〇7wt·% to 〇.llwt %. The scaly alloy coating of the present embodiment is made by using a recording base acid forging bath system to first add '〇1mg/ A nickel-phosphorus alloy is prepared by using phosphorous acid between i and 3 〇〇mg/l, wherein the composition of the nickel sulfamate bath is between 263 g/丨 and 450 g/1, and the sulfamic acid is between 30 g/ l with 45g / 1 boric acid ' and between (4) and 3_ between the vaporized nickel in 45 C and the acid value of 3 · 3 ± 〇 · 2 plating solution, with 2A / dm2 DC power supply Electroplating is carried out, and by electroplating time control, the plating time is set to prepare a phosphorus-containing alloy plating layer under the premise of current efficiency of 1〇〇% 200909097. The present invention (4) copper mold with #_合金(四) in steel liquid continuous casting It can also be made by a general sulfuric acid bath system. The composition of the sulfuric acid recording bath is "sulfur_ between 225g/1 and pottery 1 and is between 3Gg/i*45g/k. The chlorination between 60g/1 is added between the g/1 and mg/1 μ@arsic acid, and the electric power is performed by a direct current power source. The disc-containing compound added to the above two ore systems is squaric acid, and the phosphorus content of the scale alloy coating ranges from 4 0.069 wt% to 〇.H) 5 Wt·% is to maintain the low concentration of the alloy plating layer. The stress and heat-resistant softening characteristics are optimal. Of course, the added phosphorus-containing compound may also be selected from the salts of hypo- or phosphorous acid and hypophosphorous acid, and should not be limited to the description of the embodiment. The relationship between the characteristics and the content of the plating plate reveals that the plating filling content has the effect of increasing the hardness of the plating layer. When the recording layer filling content is greater than or equal to 0.069 wt.%, the coating layer has a better heat resistance of 3 &>c. That is, the hardness is maintained at a constant value at a high temperature and is not easily softened. [Table 1] Relationship between phosphorus content of plating and coating characteristics Plating scale content (Pwt.%) Hardness (HV) Hardness (HV) (300°cx 4hrs) Hardness (HV) (300 ° cx 8hrs) Hardness (HV) (400 °cx 4hrs) On the steel sheet, the curvature (mm) Comparative Example 1 0 200 160 150 150 Experimental Example 2 0.07 284 266 241 231 Experimental Example 3 0.014 281 262 255 241 Experimental Example 4 0.044 286 277 262 245 200909097
比較例1是磷含量為〇%的純鎳鍍層，該純鎳鍍層 之硬 度值約為HV200且呈粗大柱狀晶結構（圖未示），當溫度升 咼達到300°C以上，該純鎳鍍層的硬度值會因此而下降至 HV150〜HV160，導致該銅模的耐磨性降低，縮短該銅模的 使用壽命。Comparative Example 1 is a pure nickel plating layer having a phosphorus content of 〇%. The hardness of the pure nickel plating layer is about HV200 and has a coarse columnar crystal structure (not shown). When the temperature rises above 300 ° C, the pure nickel is used. The hardness value of the plating layer is thus lowered to HV150 to HV160, resulting in a decrease in the wear resistance of the copper mold and shortening the service life of the copper mold.
由實驗例2〜8的數據所顯示，該鍍層鱗含量為 0.007wt·。/。至0.105wt·%之間時，該等鍍層的銅片上曲高度在 〇mm至1mm之間，即内應力較低，另外’該等鍍層之3〇〇 C熱處理後的硬度為HV300左右’約為相同純鎳鍍層之熱 處理硬度的二倍’特別是當鍵層碟含量為〇.〇69wt %至 0_105wt·%之間（即實驗例6〜8)，具有最佳3〇〇t：之耐熱軟 化性（即其加熱300°C以上後之硬度值相當接近常溫狀態下 之硬度值）。 如習知所述，純鎳鍍層的硬度值太低及抗高溫軟化的 能力較差，本發明特別對此加以改良，即藉著適當合宜的 鱗元素添加’並利用其共鑛細化晶粒結構的特性，提高名士 晶缺陷密度’由於添加磷會使鎳的柱狀晶結構變細小，該 鍍層的硬度值也相對變高。 10 200909097 此外’發明人特別對比較例i與實驗例6作耐磨耗試 驗，結果得知，在鍍層碟含量為〇〇69wt%時（即實驗例^ ，=磨耗試驗重量損失為57.7mg5較比較例丨純錄鍛層 重^失103_5mg低許多’因此’可證實添加碟確能提高 其耐磨耗性，進而延長該銅模本體丨的使用壽命。 依照比較例9與比較例1G所揭露之數據可明顯的發現 到，鐘層填含量達G.112 wt.%以上可提升在鳩。C耐熱軟化As shown by the data of Experimental Examples 2 to 8, the plating scale content was 0.007 wt·. /. When the thickness is between 0.105wt%, the copper plate height of the plating layer is between 〇mm and 1mm, that is, the internal stress is low, and the hardness of the 3〇〇C heat treatment after the heat treatment is about HV300. It is twice the heat treatment hardness of the same pure nickel plating layer, especially when the bonding layer content is between 〇69〇% and 0_105wt% (ie, experimental examples 6~8), and has the best heat resistance of 3〇〇t: Softening (that is, the hardness value after heating above 300 ° C is quite close to the hardness value under normal temperature). As described in the prior art, the hardness value of the pure nickel plating layer is too low and the ability to resist high temperature softening is poor, and the present invention particularly improves this by adding 'with appropriate and suitable scale elements' and refining the grain structure by using the common mineral. The characteristics of the niche crystal defect density increase the nickel columnar crystal structure by the addition of phosphorus, and the hardness value of the plating layer is relatively high. 10 200909097 In addition, the inventors conducted a wear resistance test on Comparative Example i and Experimental Example 6. As a result, it was found that when the plating disc content was 〇〇69 wt% (ie, the experimental example ^, the abrasion loss of the abrasion test was 57.7 mg 5 The comparative example 丨 pure forging layer weight loss 103_5mg low many 'so' can confirm that the addition of the disc can improve its wear resistance, thereby extending the service life of the copper mold body 。. According to Comparative Example 9 and Comparative Example 1G The data can be clearly found that the filling amount of the clock layer up to G.112 wt.% can be improved in the heat-resistant softening.
性’使其硬度值與内應力ρ遺著鱗添加#的增力〇而上升，導 致該比較例9與比較例1G之銅片上曲高度因過高的内應力 分別達3眶& 5mm，使其在電鍍過程中，容易發生結構體 易剝離、變形與破裂的情形，造成該等鑛層的附著性不佳 ’所以’該等鍍層之内應力過高並不適合應用在該銅模本 體1上。 曰從上述的說明可得知，表—實㈣2〜8其鑛層之碟含 量為0_007wt·%至0.105wt.%之間，確實能滿足低内應力、 阿硬度值及最佳300。〇之耐熱軟化性的條件，相較於習知之 純鎳鍍層，本發明之該鎳磷合金㈣確實可提昇該銅模的 耐磨性，增加該銅模的使用壽命。 所以，本發明用於鋼液連鑄的具有鎳磷合金鍍層之銅 模’具有以下之優點： ~、銅模的使用壽命較長： 由於該鎳磷合金具有優於純鎳金屬的強度與韌性 組合，而且該鎳磷合金的枉狀晶結構較為細小，可使 鍍層的硬度大幅增加，所以，當溫度升高達3〇〇它時 11 200909097 ’該鎳磷合金鍍層之硬度值約是純鎳鍍層之硬度值的 兩倍，使該銅模的耐磨性提高，延長使用壽命。 二、 避免銅模之修護、電鍍及加工之花費： 該鎳磷合金電鍍的製作成本低及製程簡單的特點 皆較相近於純鎳電鍍，不同於該多重鍍層的鋼模以三 層鍍層製作的昂貴成本及複雜作業，可避免提高後續 的修護、加工費用。 三、 有效增加產能： 由於錄構合金電鏟是利用—般氨基績酸電鑛浴或 硫酸鎳鍍浴系統的方式來製作，其製作成本低及製程 簡單的特點皆較相近於純鎳電鍍，而且，使用壽命較 純錄電鑛長，其鋼模的汰換頻率較低，可有效地增加 鋼液連鑄的產能。 四、 提昇鑄胚品質： 該料合金在鋼液之連鑄作業的過程中，其硬度 值不會因溫度升高而大幅下降，亦無因習用銅模的耐 磨性降低’而使習用細描 u用_《#因過度磨耗而外露的缺 失’可提升該鑄胚之品質。 五 、鎳碟合金電鍍實施容易： 由於錄磷合金電鐘异南丨田 访缺雄 叉疋利用—般氨基磺酸電鍍浴或 &西夂鎳鍍浴系統的 .^ l作，而且，其製作成本低 及製程簡單的特點皆較 磕人么士址 自殿相近於純鎳電鍍，所以實施鎳 斛合金電鍍的方式並不困難。 歸納上述，本發明 ;鋼液連鑄的具有鎳磷合金鍍 12 200909097 層之銅模’ x利用該銅模可迅捷地由純錦電鑛改為鎳鱗合 金電鍍的優點’並藉由該鎳磷合金鍍層中的磷元素具有細 化晶粒結構的特性’可提高結晶缺陷密度，使該㈣合金 鍍層硬化而提高整體的硬度值，所以，當該鎳磷合金鍍層 鏟覆在該銅模本體之表面時’可提昇該銅模的耐磨性，增 加該銅模的使用壽命，故確實能達到本發明之目的。 "惟以上所述者，僅為本發明之一個較佳實施例而已， 當不能以此限定本發明實施之範圍，即大凡依本發明申, 專利範圍及發明說明内容所作之簡單的等效變化與修飾，月 白仍屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一示意圖，說明用於鋼液連鑄的具有錄碟合全 鍍層之銅模在連鑄時的使用狀態。 13 200909097 【主要元件符號說明】 1 ·····銅权本體 2……··鎳磷合金鍍層 14The property's hardness value and the internal stress ρ remnant scale addition # increase the force 〇 and rise, resulting in the copper sheet height of the comparative example 9 and the comparative example 1G due to excessively high internal stress of 3 眶 & 5 mm, respectively In the electroplating process, it is easy to cause the structure to be easily peeled off, deformed and broken, resulting in poor adhesion of the ore layers. Therefore, the internal stress of the plating layers is too high and is not suitable for the copper mold body 1. on. From the above description, it can be seen that the table-real (four) 2 to 8 has a disc content of between 0_007wt·% and 0.105wt.%, which can satisfy the low internal stress, the hardness value and the optimum 300. The nickel-phosphorus alloy (4) of the present invention can improve the wear resistance of the copper mold and increase the service life of the copper mold compared to the conventional pure nickel plating. Therefore, the copper mold having the nickel-phosphorus alloy plating layer for the continuous casting of molten steel of the present invention has the following advantages: ~ The copper mold has a long service life: since the nickel-phosphorus alloy has strength and toughness superior to that of pure nickel metal. Combination, and the nickel-phosphorus alloy has a fine crystal structure, which can greatly increase the hardness of the coating, so when the temperature rises to 3 1111 200909097 'The hardness of the nickel-phosphorus alloy coating is about pure nickel plating. The double value of the hardness increases the wear resistance of the copper mold and prolongs the service life. Second, to avoid the cost of copper mold repair, plating and processing: The nickel-phosphorus alloy plating production cost is low and the process is simple, the characteristics are similar to pure nickel plating, different from the multi-plated steel mold is made of three layers of plating The expensive cost and complicated operation can avoid the subsequent repair and processing costs. Third, the effective increase of production capacity: Because the recording alloy electric shovel is made by the method of the general amino acid electric ore bath or nickel sulphate plating bath system, its production cost is low and the process is simple, the characteristics are similar to pure nickel plating. Moreover, the service life is longer than that of purely recorded electric mines, and the replacement frequency of steel molds is relatively low, which can effectively increase the production capacity of molten steel continuous casting. Fourth, to improve the quality of the casting embryo: In the process of continuous casting of molten steel, the hardness value of the alloy is not greatly reduced due to the increase of temperature, nor is the wear resistance of the conventional copper mold reduced. The use of _ "# due to excessive wear and tear exposed" can improve the quality of the casting embryo. 5. Nickel-plated alloy plating is easy to implement: Since the recording of the phosphorus alloy electric clock is different from the Nantong Putian, the use of the sulfamic acid plating bath or the "Western nickel plating bath system. The low and simple process characteristics are similar to the pure nickel plating in the temple. Therefore, it is not difficult to implement nickel-iridium alloy plating. In summary, the present invention; molten steel continuous casting with nickel-phosphorus alloy plating 12 200909097 layer of copper mold 'x using the copper mold can be quickly changed from pure Jindian mine to nickel-scale alloy plating' and by the nickel The phosphorus element in the phosphorus alloy plating layer has the property of refining the grain structure', which can increase the crystal defect density, harden the (4) alloy plating layer and increase the overall hardness value, so when the nickel-phosphorus alloy plating layer is applied to the copper mold body The surface of the copper mold can improve the wear resistance of the copper mold and increase the service life of the copper mold, so that the object of the present invention can be achieved. The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent of the scope of the invention, the scope of the invention and the description of the invention. Variations and modifications, Moonlight are still within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the state of use of a copper mold having a full-plated coating for continuous casting of molten steel in continuous casting. 13 200909097 [Explanation of main component symbols] 1 ····· The main body of copper rights 2...··Ni-P alloy plating 14