1311157 玖、發明說明： 【發明所屬之技術領域】 本發明是有關於一種纜線（trolley wire)及其製造方 法。特別是關於一種強度（strength)、導電率（electdc conductivity)、耐磨耗性（wear resistance)優良的續線，與 得到該纜線之纜線的製造方法。 ^ 【先前技術】 在習知技術中，作爲構成用於與火車的導電弓架 (pantograph)接觸並向火車供給電力之纜線的材料，採用純 銅或含有0.3質量％以下的錫的銅合金。 但是’近年火車呈現高速化，需要增加纜線的架線 (catenary)張力。作爲對應這種要求的一種技術，在日本專 利早期公開之特開平6-8759號公報中進行過說明。 在這種技術中，首先利用連續鑄造得到採用氧含量〇1 質量％(% by mass)以下’並含有〇.2〜〇.5質量％的錫，且剩 餘部分爲銅及不可避免的雜質之構成的鑄造材料。接著， 對所得到的鑄造材料，在600°C以上的溫度下，以80%以 上的減縮比(reduction ratio)連續地施以熱加工(hot work)， 得到直徑24mm以上的線材。然後，對該線材在i5(rc& 下的溫度下，以70%以上的減縮比施以冷加工（cold work)， 得到火車電線用銅合金導體。所得到的銅合金導體可維持 與習知相同的導電率，並實現高強度。 但是’最好能開發一種較上述習知技術所得到的火車 電線用銅η金導體’具有更阔強度且耐磨耗性優良的纜 13652pif.doc 6 1311157 線。伴隨火車的高速化，導電弓架和纜線的滑動速度（sliding velocity)增大，在導電弓架和纜線之間容易産生電弧(arc)。 而電弧會導致産生纜線的磨耗速度增大之問題。在上述習 知技術中，在強度和導電率方面滿足作爲纜線的一定的要 求特性，但是關於強度和耐磨耗性，還要求進一步的改善。 特別是從纜線維護的簡潔化（simplification)和降低更換頻 率的方面出發，更是需要一種耐磨耗性優良的纜線。 【發明內容】 因此，本發明的目的是提供一種具有足夠的強度和導 電率，且耐磨耗性優良的纜線及其製造方法。 本發明藉由提高Sn的含有量，並將其他元素以一定量進 行添加而達成上述目'的。 本發明之耐磨耗性纜線，採用Sn含量大於0.5質量％ 小於0.8質量％，從Ag、In、Sr、Ca、Mg及Zr中所選擇 的至少一種的總含量爲〇·〇〇〇5〜0.3質量％，氧含量爲 0.01〜0.05質量％，剩餘部分爲Cu和不可避免的雜質之形 態而構成。而且，其特徵在於：拉伸強度在460N/mm2以 上，導電率在 60%IACS (International Annealed Copper Standard)以上。 藉由含有高濃度的Sn，可得到更高強度且耐磨耗性優 良的纜線。而且，不只是Sn，藉由將從Ag、In、Sr、Ca、 Mg、Zr中所選擇的至少一種按上述規定量進行添加，可 在高張力·高導電率的基礎上，得到高耐磨耗性。 另一方面，本發明之耐磨耗性纜線的製造方法的特徵 13652pif.doc 7 1311157 在於：包栝利用連續鑄造得到採用Sn含量大於0.5質量％ 小於0.8質量％，從Ag、In、Sr、Ca、Mg及Zr中所選擇 的至少—種的總含量爲0.0005〜0.3質量％ ’氧含量爲 〇·〇1〜0.05質量％，剩餘部分爲Cu和不可避免的雜質之構 成的鑄造材料的製程、對所得到的鑄造材料在600°C以上 的溫度下，以50%以上的減縮比連續地施以熱加工，得到 直徑20mm以上之線材的製程、對該線材在15〇°C以下的 溫度下，以50%以上的減縮比施以冷加工的製程。 如利用以上所述之本發明的纜線及其製造方法，可得 到具有足夠的強度和導電率，且耐磨耗性優良的纜線。因 此’能夠應對火車的高速化，並可實現纜線維護的簡潔化 和更換頻率的降低，·且可期待本發明利用在高速化更進一 步發展的鐵道工業。 爲讓本發明之上述和其他目的、特徵和優點能更明顯 易懂’下文特舉一較佳實施例，並配合所附圖式，作詳細 說明如下。 【實施方式】 下面，對本發明進行更加詳細地說明。 〈Sn :大於0.5〜0.8質量％〉 使Sn的含有量大於0.5質量％，是爲了得到更高強度 的纜線原料，而使Sn的含有量在0.8質量％以下，是爲了 更加抑制導電率的降低。 〈Ag、In、Sr、Ca、Mg、Zr 的至少一種：總量爲 0.0005〜〇.3 質量％〉 13652pif.doc 8 13111571311157 发明Invention Description: TECHNICAL FIELD The present invention relates to a cable and a method of manufacturing the same. In particular, it relates to a continuous line having excellent strength, electdc conductivity, and wear resistance, and a method of manufacturing a cable for obtaining the cable. [Prior Art] In the prior art, as a material constituting a cable for contacting a pantograph of a train and supplying electric power to a train, pure copper or a copper alloy containing tin of 0.3% by mass or less is used. However, in recent years, the speed of trains has increased, and it is necessary to increase the catenary tension of the cables. A technique for responding to such a request has been described in Japanese Laid-Open Patent Publication No. Hei 6-8759. In this technique, first, a continuous casting is used to obtain tin having an oxygen content of 质量1 mass% (% by mass) or less and containing 〇.2 to 〇5 mass%, and the remainder is copper and unavoidable impurities. The casting material is composed. Then, the obtained cast material is continuously subjected to hot work at a temperature of 600 ° C or higher at a reduction ratio of 80% or more to obtain a wire having a diameter of 24 mm or more. Then, the wire is subjected to cold work at a temperature of i5 (rc& at a reduction ratio of 70% or more to obtain a copper alloy conductor for a train wire. The obtained copper alloy conductor can be maintained in the same manner as conventionally. Conductivity and high strength. However, it is better to develop a cable with a wider strength and better wear resistance than the copper n-gold conductor for train wires obtained by the above-mentioned prior art. 13652pif.doc 6 1311157 With the speeding up of the train, the sliding velocity of the pantograph and the cable increases, and an arc is easily generated between the pantograph and the cable. The arc causes the wear rate of the cable to increase. Big problem. In the above-mentioned prior art, certain required characteristics as a cable are satisfied in terms of strength and electrical conductivity, but further improvement is required regarding strength and wear resistance. In view of the simplification and the reduction of the frequency of replacement, a cable having excellent wear resistance is required. Accordingly, it is an object of the present invention to provide a A cable having excellent strength and electrical conductivity and excellent wear resistance and a method for producing the same. The present invention achieves the above object by increasing the content of Sn and adding other elements in a certain amount. The wear resistant cable has a Sn content of more than 0.5% by mass and less than 0.8% by mass, and a total content of at least one selected from the group consisting of Ag, In, Sr, Ca, Mg, and Zr is 〇·〇〇〇5 to 0.3 mass. %, the oxygen content is 0.01 to 0.05% by mass, and the remainder is composed of Cu and unavoidable impurities. Further, it is characterized by a tensile strength of 460 N/mm 2 or more and a conductivity of 60% IACS (International Annealed Copper). Standard. Above. By containing a high concentration of Sn, a cable with higher strength and excellent wear resistance can be obtained. Moreover, not only Sn, but also from Ag, In, Sr, Ca, Mg, Zr At least one of the selected ones is added in the above-mentioned predetermined amount, and high wear resistance can be obtained on the basis of high tension and high electrical conductivity. On the other hand, the manufacturing method of the wear resistant cable of the present invention is characterized by 13652pif. Doc 7 1311157 lies in: Bao Lili For the continuous casting, the Sn content is more than 0.5% by mass and less than 0.8% by mass, and the total content of at least one selected from Ag, In, Sr, Ca, Mg, and Zr is 0.0005 to 0.3% by mass. The oxygen content is 〇·〇. 1 to 0.05% by mass, the remainder is a process for casting a material composed of Cu and unavoidable impurities, and the obtained casting material is continuously subjected to heat at a reduction ratio of 50% or more at a temperature of 600 ° C or higher. The process of obtaining a wire having a diameter of 20 mm or more, and subjecting the wire to a temperature of 15 ° C or less, is subjected to a cold working process at a reduction ratio of 50% or more. According to the cable of the present invention described above and the method of manufacturing the same, a cable having sufficient strength and electrical conductivity and excellent wear resistance can be obtained. Therefore, it is possible to cope with the increase in the speed of the train, and to simplify the maintenance of the cable and reduce the frequency of replacement. It is expected that the present invention can be utilized in the railway industry which is further developed at a higher speed. The above and other objects, features, and advantages of the present invention will become more apparent <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; [Embodiment] Hereinafter, the present invention will be described in more detail. <Sn: more than 0.5 to 0.8% by mass> The content of Sn is more than 0.5% by mass in order to obtain a cable material having a higher strength, and the content of Sn is 0.8% by mass or less in order to further suppress the conductivity. reduce. <At least one of Ag, In, Sr, Ca, Mg, Zr: total amount is 0.0005~〇.3 mass%> 13652pif.doc 8 1311157
* ' . . . .....，-,賢 J 藉由在銅中添加Ag、In、Sr、Ca、Mg、Zr的至少一 種，可提高銅合金的強度，而且即使因導電弓架和纜線間 的電弧而發熱，也不會使銅合金軟化，可提高耐熱性。 如果上述Ag等添加元素的總含有量不足0.0005質量 %，則強度和耐熱性的上升效果有限。而且，雖然Ag在以 金屬形態存在的情況下，具有比銅高的導電率，但當Ag 在銅合金中進行固溶時，銅合金的導電率下‘降。所以，使 這些添加元素的總含有量上限在0.3質量％以下，可防止纜 線的導線率下降。而且，藉由添加這些元素，可防止纜線 原料鑄造時的鑄片裂痕，另外在纜線製造階段的抽拉 (drawing)製程中可抑制斷線。 〈氧：0.01〜0.05質量％〉 藉由使氧含有量爲0.01〜0.05質量％，能夠輕鬆地得到 必要的導電率。而且，藉由使纜線的製造所使用之鑄造材 料的氧含量在0.0 5質量％以下，可抑制氧化銅的産生，並 抑制在加工時以氧化銅爲起點的斷線。反之，如果氧含有 量不足〇.〇1質量％，則熱加工時容易産生裂痕，在鑄造後 的製程中難以得到高品質的纜線。 在本發明之纜線的化學成分中也可含有不可避免的雜 質。不可避免的雜質包括Ni、Sb、As、Fe、Pb、Bi、P、 Si、Zn、S、Se、Te 等。 〈拉伸強度：460N/mm2以上〉 藉由具有460N/mm2以上的拉伸強度，可充分應對伴隨 火車的高速化之纜線的架線張力的增強。所形成的拉伸 13652pifl.doc 9 1311157 強度更佳爲480N/mm2以上，特佳爲500N/mm2以上。特 別是當纜線的剖面面積爲110 mm2時在500N/mm2以上， 问剖面面積爲170 mm2時在460N/mm2以上較爲適合。 〈導電率：60%IACS以上〉 藉由使纜線的導電率在60%IACS以上，可滿足作爲 纜線的必要導電率。雖然在本發明的纜線中，Sn濃度高， 比較難以得到高導電率，但是作爲並不要求那麽高的導電 率之交流用纜線，本發明之纜線還是適合的。該導電率以 在20°C時對國際軟銅標準所規定的標準軟銅的導電率之百 分比（％IACS)來表示。 〈利用連續鑄造得到鑄造材料的製程〉 得到鑄造材料的製程以旋轉帶(wheel belt)方式和雙帶 (twin belt)方式這種使用可動鑄模的鑄造方式爲佳。藉由 利用這些方式而進行連續鑄造，可抑制製造成本。 〈對鑄造材料施以熱加工而得到線材的製程〉 藉由對鑄造材料在600°C以上的溫度下施以50%以上 的熱加工，可使鑄造組織微細化，並提高線材強度。作爲 熱加工以熱軋爲佳。特別是與前述鑄造相連續而進行熱 軋，在製造性方面較佳。 藉由使加工溫度在600°C以上，可輕鬆地進行熱加工。 而且，也可使後製程即冷加工時的加工性提高。鑄造材料 在壓延時發生氧化，所以在後製程時浸漬於酒精等中進行 還原。屆時’如果鑄造材料冷卻，則反應難以進行，還原 變得遲緩’所以從這一點出發，使加工溫度保持在600。匚 13652pif.doc 10 1311157 以上也是重要的。 藉由使熱加工的減縮比在50%以上，可使線材的結晶 結構微細化並提高強度。該減縮比以〔（加工前的剖面面 積-加工後的剖面面積）/加工前的剖面面積〕表示。藉由 加入上述添加元素，即使最大限度地提高熱減縮比，也可 由後製程的冷加工得到足夠強度的纜線。另外，熱加工的 減縮比爲70%以上，而且也可爲80%以上。 而且，由熱加工所得之線材的直徑爲20mm以上。藉 由形成該線材直徑，在下一製程中可接受高減縮比的冷加 工。結果，可使利用冷加工之線材強度提高的效果更加顯 著。由熱加工所得之線材的直徑，也可在24mm以上。 <對線材施以冷加工的製程> 得到直徑20mm以上的線材以後，在15〇t以下的溫 度下以50%以上的減縮比施以冷加工。利用該冷加工，可 使線材的強度提高。這裏的減縮比也以〔（加工前的剖面 面積-加工後的剖面面積)/加工前的剖面面積〕進行表示。 利用該冷加工，可得到高強度的纜線。 冷加工適合採用抽拉加工。加工溫度在150°C以下即 可，也可在常溫下不加熱而進行加工。減縮比爲50%以上。 藉由進行減縮比50%以上的冷加工，可得到足夠的強度提 高效果。該減縮比以70%以上爲佳，75%以上爲更佳。 下面，對本發明的實施形態進行說明。 按照熔解-> 鑄造-熱軋-抽拉—製品的製程製作纜 線。在該製程中，從熔解到熱軋，利用連續鑄造壓延設備 13652pif.doc 11 1311157 進行加工。首先，連續鑄造表1所示之化學成分的熔解銅 合金。接著，以表2所示的減縮比進行熱軋而得到線材。 然後，對所得到的線材，同樣以表2所示的減縮比施以冷 抽拉加工，得到剖面面積爲170mm2或110mm2的纜線。 而且，對部分鑄造材料，不施以熱軋即進行冷抽拉加工。 對這些纜線測定拉伸強度和導電率。其結果也一倂在 表2中進行表示。拉伸強度的臨界値（threshold value)爲 460N/mm2以上，導電率的臨界値爲60%以上。 13652pif.doc 12 1311157* ' . . . . . . , -, 贤 J By adding at least one of Ag, In, Sr, Ca, Mg, Zr to copper, the strength of the copper alloy can be increased, and even due to the conductive yoke and The arc between the cables generates heat and does not soften the copper alloy, thereby improving heat resistance. When the total content of the additive element such as Ag described above is less than 0.0005 mass%, the effect of increasing the strength and heat resistance is limited. Further, although Ag has a higher electrical conductivity than copper in the presence of a metal, when the Ag is solid-solved in a copper alloy, the electrical conductivity of the copper alloy is lowered. Therefore, the upper limit of the total content of these additional elements is 0.3% by mass or less, and the wire rate of the cable can be prevented from decreasing. Further, by adding these elements, cracking of the cast piece during casting of the cable raw material can be prevented, and disconnection can be suppressed in the drawing process at the cable manufacturing stage. <Oxygen: 0.01 to 0.05% by mass> By setting the oxygen content to 0.01 to 0.05% by mass, the necessary conductivity can be easily obtained. In addition, when the oxygen content of the casting material used for the production of the cable is 0.05% by mass or less, the generation of copper oxide can be suppressed, and the disconnection starting from the copper oxide during the processing can be suppressed. On the other hand, if the oxygen content is less than 〇1% by mass, cracks are likely to occur during hot working, and it is difficult to obtain a high-quality cable in the post-casting process. Unavoidable impurities may also be contained in the chemical composition of the cable of the present invention. Inevitable impurities include Ni, Sb, As, Fe, Pb, Bi, P, Si, Zn, S, Se, Te, and the like. <Tensile strength: 460 N/mm2 or more> With a tensile strength of 460 N/mm2 or more, it is possible to sufficiently cope with the increase in the wire tension of the cable which is accompanied by the increase in speed of the train. The formed stretch 13652 pifl.doc 9 1311157 is more preferably 480 N/mm 2 or more, and particularly preferably 500 N/mm 2 or more. In particular, when the cross-sectional area of the cable is 110 mm2, it is above 500 N/mm2, and when the cross-sectional area is 170 mm2, it is more suitable for 460 N/mm2 or more. <Electrical conductivity: 60% IACS or more> By making the electric conductivity of the cable 60% IACS or more, the necessary electric conductivity as a cable can be satisfied. Although the Sn concentration is high in the cable of the present invention, it is relatively difficult to obtain high conductivity, but the cable of the present invention is suitable as an AC cable which does not require such a high conductivity. This conductivity is expressed as a percentage (% IACS) of the conductivity of the standard soft copper specified in the International Soft Copper Standard at 20 °C. <Process for obtaining cast material by continuous casting> The process for obtaining a cast material is preferably a wheel belt type and a twin belt type, which is preferably a casting method using a movable mold. By performing continuous casting using these methods, the manufacturing cost can be suppressed. <Process for obtaining a wire by hot working on a cast material> By applying a hot work of 50% or more to a cast material at a temperature of 600 ° C or higher, the cast structure can be made finer and the strength of the wire can be improved. Hot rolling is preferred as hot working. In particular, hot rolling is carried out continuously in the casting phase, which is preferable in terms of manufacturability. Hot working can be easily performed by making the processing temperature above 600 °C. Moreover, it is also possible to improve the workability in the post-process, that is, in cold working. The cast material is oxidized at the time of pressure, so it is immersed in alcohol or the like for reduction in the post-process. At that time, if the cast material is cooled, the reaction is difficult to proceed and the reduction becomes sluggish. Therefore, from this point of view, the processing temperature is maintained at 600.匚 13652pif.doc 10 1311157 The above is also important. By reducing the shrinkage ratio of the hot working to 50% or more, the crystal structure of the wire can be made fine and the strength can be improved. This reduction ratio is expressed by [(sectional area before processing - sectional area after processing) / sectional area before processing]. By adding the above-mentioned additive elements, even if the heat reduction ratio is maximized, a cable of sufficient strength can be obtained by cold working in the post-process. Further, the shrinkage ratio of hot working is 70% or more, and may be 80% or more. Further, the diameter of the wire obtained by hot working is 20 mm or more. By forming the wire diameter, a cold reduction of a high reduction ratio can be accepted in the next process. As a result, the effect of improving the strength of the wire by cold working can be made more remarkable. The diameter of the wire obtained by hot working can also be 24 mm or more. <Process for cold working the wire material> After obtaining a wire having a diameter of 20 mm or more, cold working is performed at a temperature of 15 Torr or less at a reduction ratio of 50% or more. With this cold working, the strength of the wire can be increased. The reduction ratio here is also expressed by [(sectional area before processing - sectional area after processing) / sectional area before processing]. With this cold working, a high-strength cable can be obtained. Cold working is suitable for drawing. The processing temperature may be 150 ° C or less, or it may be processed without heating at normal temperature. The reduction ratio is 50% or more. By performing cold working at a reduction ratio of 50% or more, a sufficient strength improvement effect can be obtained. The reduction ratio is preferably 70% or more, and more preferably 75% or more. Hereinafter, embodiments of the present invention will be described. The cable is made in accordance with the process of melting-> casting-hot rolling-drawing-products. In this process, from melting to hot rolling, processing is carried out using a continuous casting calendering apparatus 13652 pif.doc 11 1311157. First, a molten copper alloy of a chemical composition shown in Table 1 was continuously cast. Next, hot rolling was performed at the reduction ratio shown in Table 2, and the wire material was obtained. Then, the obtained wire was subjected to cold drawing processing in the same manner as the shrinkage ratio shown in Table 2 to obtain a cable having a cross-sectional area of 170 mm 2 or 110 mm 2 . Further, a part of the cast material is subjected to cold drawing without hot rolling. Tensile strength and electrical conductivity were measured for these cables. The results are also shown in Table 2 at a glance. The threshold value of the tensile strength is 460 N/mm 2 or more, and the critical enthalpy of the conductivity is 60% or more. 13652pif.doc 12 1311157
No. 組成(質量％) Sn Ag In Sr Ca Mg Zr 氧 施 例 A1 0.51 0.005 0.05 0.02 A2 0.52 0.1 0.03 A3 0.55 0.22 0.03 A4 0.51 0.03 0.02 A5 0.72 0.01 0.08 0.04 A6 0.80 0.08 0.04 A7 0.64 0.003 0.03 A8 0.62 0.0008 0.02 比 較 例 B1 0.70 0.001 B2 0.70 0.008 B3 0.72 0.01 0.04 B4 0.52 0.02 B5 0.82 0.02 B6 0.45 0.03 習 知 例 Cl 0.60 <0.001 C2 0.70 <0.001 C3 0.70 <0.001 13652pif.doc 1 1311157 表2No. Composition (% by mass) Sn Ag In Sr Ca Mg Zr Oxygen application A1 0.51 0.005 0.05 0.02 A2 0.52 0.1 0.03 A3 0.55 0.22 0.03 A4 0.51 0.03 0.02 A5 0.72 0.01 0.08 0.04 A6 0.80 0.08 0.04 A7 0.64 0.003 0.03 A8 0.62 0.0008 0.02 Comparative Example B1 0.70 0.001 B2 0.70 0.008 B3 0.72 0.01 0.04 B4 0.52 0.02 B5 0.82 0.02 B6 0.45 0.03 Conventional Example Cl 0.60 < 0.001 C2 0.70 < 0.001 C3 0.70 < 0.001 13652 pif.doc 1 1311157 Table 2
No. 壓延 溫度 (°C) 熱減 縮比 (%) 熱加工 後的尺 寸(mm2) 冷減 縮比 (%) 冷加工 後的尺 寸(mm2) 拉伸強度 (N/mm2) 導電率 (%IACS) A1 720 90.8 30 84.4 110 500 66 A2 720 90.8 30 84.4 119 518 62 A3 720 90.8 30 84.4 110 495 65 實 施 A4 620 61.7 32 86.3 110 480 67 A5 620 83.5 21 50.9 170 475 62 例 A6 720 90.8 30 76.0 170 480 61 A7 620 85.0 20 65.0 110 495 63 A8 620 85.0 20 65.0 110 490 64 B1 —— ※l 30 84.4 110 410 57 比 B2 750 90.8 30 84.4 110 495 58 B3 620 87.9 18 33.0 170 440 61 較 B4 620 87.9 18 33.0 170 435 69 例 B5 620 66.3 30 84.4 110 480 57 B6 620 83.5 21 68.2 110 450 70 習 Cl 650 72.0 28 72.0 170 539 59 知 C2 650 72.0 28 72.0 170 568 55 例 C3 750 94.8 19 61.2 110 451 58 ※丨：不進行壓延而將鑄造棒直接抽拉 由表2可淸楚地確認，除了 Sn以外還含有Sn以外的 添加元素之No.Al〜A8,與只添加了 Sn之No.B卜B2、B5、 13652pif.doc 14 1311157 •((Ά Λ : , ................* C1〜C3相比，導電率高。這些Νο.ΑΙ〜Α8在拉伸強度方面 也大於臨界値。 而且，可確認Νο·Β3、Β4、Β6無論是否有Ag等添加 元素，在拉伸強度方面也較No.A1〜A8差。No. Calendering temperature (°C) Heat reduction ratio (%) Size after hot working (mm2) Cooling reduction ratio (%) Size after cold working (mm2) Tensile strength (N/mm2) Conductivity (%IACS) A1 720 90.8 30 84.4 110 500 66 A2 720 90.8 30 84.4 119 518 62 A3 720 90.8 30 84.4 110 495 65 Implementation A4 620 61.7 32 86.3 110 480 67 A5 620 83.5 21 50.9 170 475 62 Example A6 720 90.8 30 76.0 170 480 61 A7 620 85.0 20 65.0 110 495 63 A8 620 85.0 20 65.0 110 490 64 B1 —— ※l 30 84.4 110 410 57 than B2 750 90.8 30 84.4 110 495 58 B3 620 87.9 18 33.0 170 440 61 Compared to B4 620 87.9 18 33.0 170 435 69 cases B5 620 66.3 30 84.4 110 480 57 B6 620 83.5 21 68.2 110 450 70 Cl 650 72.0 28 72.0 170 539 59 Know C2 650 72.0 28 72.0 170 568 55 Example C3 750 94.8 19 61.2 110 451 58 ※丨: No The casting of the cast rod was directly drawn by calendering. It can be confirmed by Table 2 that No.Al~A8, which is an additive element other than Sn, in addition to Sn, and No. B, B2, B5, and 13652pif which are only added with Sn. Doc 14 1311157 •((Ά Λ : , ................* C1~C3 compared The electrical conductivity is high. These Νο.ΑΙ~Α8 are also larger than the critical 値 in terms of tensile strength. Moreover, it can be confirmed that Νο·Β3, Β4, Β6, whether or not there are additive elements such as Ag, are also in the tensile strength compared to No. A1~ A8 is poor.
另外，對上述纜線的一部分，測定磨耗率並進行耐磨 耗性的評價。該評價象下面所說明的這樣進行。首先，使 纜線和銅燒結滑塊的滑動速度爲50km/h，與滑塊的接觸負 載（contact load)爲7kgf(68.6N)，並在加以直流電壓200V、 通電電流200A的狀態下，使纜線和滑塊進行104次滑動。 然後，求纜線的磨耗面積，並以導電弓架的滑動次數除其 磨耗面積而作爲磨耗率進行評價。發現磨耗率越小耐磨耗 性越優良。其結果如表3所示。Further, the abrasion rate was measured for a part of the above cable, and the abrasion resistance was evaluated. This evaluation was carried out as described below. First, the sliding speed of the cable and the copper sintered slider is 50 km/h, the contact load with the slider is 7 kgf (68.6 N), and the cable is supplied with a DC voltage of 200 V and an energizing current of 200 A. The line and slider slide 104 times. Then, the wear area of the cable was determined, and the wear rate was evaluated by dividing the wear area of the pantograph. It was found that the smaller the abrasion rate, the better the wear resistance. The results are shown in Table 3.
No. 磨耗率 實施例 A2 0.15 實施例 A5 0.16 實施例 A6 0.15 比較例 B3 0.18 習知例 Cl 0.19 習知例 C2 0.18 ※磨耗率：（mm2/xl〇4通過導電弓架）No. Abrasion rate Example A2 0.15 Example A5 0.16 Example A6 0.15 Comparative example B3 0.18 Conventional example Cl 0.19 Conventional example C2 0.18 ※ Wear rate: (mm2/xl〇4 through the conductive bow stand)
由表3可清楚地確認，除了 Sn以外還含有Sn以外的 添力口元素之No.A2、A5 、A6 ，與No.B3 、Cl 、 C2相比，耐 磨耗性優良。No.B3爲一種除了高濃度的Sn以外，還 13652pif3.doc 5 1 1311157 含有Sn以外的添加元素，但熱加工後的尺寸小的試樣， No.Cl、C2爲只添力口了 Sn的試樣。 雖然本發明已以較佳實施例揭露如上，然其並非用以 限定本發明，任何熟習此技藝者，在不脫離本發明之精神 和範圍內，當可作些許之更動與潤飾，因此本發明之保護 範圍當視後附之申請專利範圍所界定者爲準。 13652pif.doc 16As is clear from Table 3, No. A2, A5, and A6, which are addition elements other than Sn, are contained in addition to Sn, and are excellent in abrasion resistance as compared with No. B3, Cl, and C2. No. B3 is a sample containing not only a high concentration of Sn but also 13652pif3.doc 5 1 1311157 containing an additive element other than Sn, but having a small size after hot working, No. Cl and C2 are only added to the Sn. Sample. While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application. 13652pif.doc 16