M324554 八、新型說明： 【新型所屬之技術領域】 一種放電加工用電極線，特別是用來做為放電加工用途之電極線 之新型結構，利用不同相位合金材質的物理性質差異藉由其脆性，以 冷拉方法’形成一個低成本、高效能的放電加工線。 • 【先前技術】 - 放電加工已是業界所熟知之技術，係利用電能轉換成工件熱能， 馨使工件急速溶解的一種熱性加工方法，加工放電時，電極線與工件極 微細的間隙中產生過度電弧放電現象，同時加工中液體由於受到放電 壓力及熱侧產生氣化爆發縣，此時工件的雌部份將伴隨液體氣 化現象溶入加工液中，工件因放電的作用產生放電痕，如此反覆進行， 我們所希望的形狀便可加工完成。 但此種加工方法使用之電極線消耗極大，除了正常之消耗外，若 介電液沖刷效率不彰，具有導電性之大量碎屑還可能使電極線與工件 短路造成大量電弧，導致玉件之損壞以及電極_以預警之斷裂，而 籲_ -般以含鋅量較高的放電加工機⑽M)切割線切割時較有效率；例如 包覆鋅之放電加工機切麟或含黃銅合金包覆高成分鋅的放電加工機 切割線會比表面含鋅量較低的放電加工機切割線更有效率切割·以r 相黃銅具有高成分的鋅，平均約為65%，並具有相對較佳的炼點，$ 為攝氏八百度，g此可視為—種優良的放電加工機切鱗；*点相且 鋼含，篁平均為45%，其熔點大約為攝氏八百八十度，延展性較佳， 可以藉由冷拉加以製造生產，但因含鋅量較少，並不理想；不過因純 粹的r相合金極易碎裂，要冷拉幾乎不可能，因此製作上頗為費時費 事，加添大量生產時的成本，此外，一般對傳統包覆鋅黃銅與石相包 M324554 覆之EDM黃銅切割線不甚滿意的地方是線導的磨損和包覆層上氧化鋅 的才貝害’一 7相黃銅的包覆比鋅更不易磨損，也比鋅和冷相物質較不 易受氧化鋅的損害，較不易被外界腐蝕。 這些因素向為業界所困擾，亟待改善。 【新型内容】 . 一種放電加工用電極線，其係藉由不同的相的金屬，而產生的結 構’其中以β相的第一金屬（如銅、黃銅)做為核心，外表則間歇披 覆以r相的第_金屬成為一放電力口工線，且該放電力口工線中具有超過 50%或以上的第二金屬，又該合金具有55(rc以上之溶點。 【實施方式】 本創作係藉由τ相合金物質在冷㈣過程巾會斷裂重組的努 果^運用在冷拉之前維持r相錢層相對較薄的厚度，因此可以於冷担 過程中藉由在_上包覆7相合金的厚度在經過減理之後肩 不致太厚而易於碎裂，因此產生—種放電加工㈣極線丨，由第一名 屬2 (如銅、黃銅或銅包鋼）做為核心、，然後料華熱量低於％千角 耳/平方公分之第二金屬3包覆第一金屬並成為—合金，再將此一名 金透過冷拉之後熱處理，㈣彡成本創作之放電加玉用電極線1 ;其中 雖以理想狀況的麵切割線軸要有謂％的包覆較佳，惟 不必如此’藉由實驗效果了解不是聰包覆的絲 優良的腿切割線切割結果，因此藉由不同相位的物雌質 差異，在冷拉的過程中，藉由第二金屬3的r相脆裂後，產生不連續 4而披附於第-金屬i上，因此得以形縣創作之放電加工 電極線1，惟以其中第二金屬披覆率須在以上較佳。 M324554 以r相黃酬包覆下的情耻單純崎包覆更料磨損，也比辞 和Θ相物質較不易受氧化鋅的損害，因藉由r相的黃銅披覆 ，可在比 先前技術的EDM切割線產品低的溫度下處理。 另以本創作中第一金屬可為黃銅，其中之辞佔重量之5%〜刪， 而第二金屬可由下列鋅、錫、鎂以及紹等金屬，以因應不同的需求， 惟以第二金屬為鋅時’第二金屬中具有58%〜67%之鋅含量為較佳的均 衡點，可以兼顧使用切割時的效率及製作上的效率。 本創作的優點·· 1·減少進行初步切割的時間。 2·用與傳統腦切割線相同的速度進行初步切割，但用較少的掠 割以達到與傳統EDM切割線相同的完成表面。 3·用與傳統EDM切割線相同初步切割速度，做相同數量的掠割， 得到更好的完成表面。 4·藉由7相的第二金屬可以在較低的溫度下處理，製作成本較低 也較簡易。 - 5·以7相黃銅的包覆下的情況比單純以辞包覆更不易磨損。 6·以r相黃銅的包覆下的情況下比鋅和沒相物質較不易受氧化 鋅的損害，品質較佳較不易被腐姓。 【圖式簡單說明】 第一圖為本創作之放電加工線的縱向電子顯微鏡下顯影的剖視 国 圖。 第二圖之放電加工線的橫向電子顯微鏡下顯影的不連續批覆的橫 向剖視圖。 第三圖之放電加工線的橫向電子顯微鏡下顯影的橫向放大剖視 M324554 圖。 第四圖為本創作之放電加工線的於電子顯微鏡下顯影的立體結構 圖。 【主要元件符號說明】 放電加工用電極線1 第一金屬2 第二金屬3 間隙4M324554 VIII. New description: [New technical field] A new type of electrode wire for electrical discharge machining, especially for the electrode wire used for electrical discharge machining. The physical properties of different phase alloy materials are distinguished by its brittleness. A low-cost, high-efficiency EDM line is formed by the cold drawing method. • [Prior Art] - EDM is a well-known technology in the industry. It is a thermal processing method that uses electrical energy to convert into the heat energy of the workpiece, and the workpiece is rapidly dissolved. During the machining discharge, the electrode line and the workpiece are excessively fine. The phenomenon of arc discharge, at the same time, the liquid in the process is discharged due to the discharge pressure and the gasification on the hot side. At this time, the female part of the workpiece is dissolved into the working fluid accompanied by the liquid gasification phenomenon, and the workpiece generates a discharge mark due to the discharge. Repeatedly, the shape we want can be processed. However, the electrode wire used in this processing method is extremely expensive. In addition to the normal consumption, if the dielectric liquid flushing efficiency is not good, a large amount of conductive debris can also cause a short circuit between the electrode wire and the workpiece to cause a large amount of arc, resulting in a jade piece. Damage and electrode _ to break the warning, and _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The EDM wire cutting line with high zinc content will cut more efficiently than the EDM cutting wire with lower zinc content. The zinc with high composition of r phase brass has an average of about 65% and has a relatively high ratio. Good refining point, $ is eight hundred degrees Celsius, g can be regarded as an excellent electric discharge machine cutting scale; * point phase and steel content, the average 篁 is 45%, its melting point is about 880 degrees Celsius, extension It is better to be produced by cold drawing, but it is not ideal because of the small amount of zinc; however, since the pure r-phase alloy is extremely fragile, it is almost impossible to cold-drawing, so it is quite time-consuming to manufacture. Troublesome, adding a lot of production In addition, generally not satisfied with the traditional coated zinc brass and stone phase cover M324554 covered EDM brass cutting line is the wire guide wear and the zinc oxide on the coating layer 'a 7-phase brass The coating is less prone to wear than zinc, and is less susceptible to damage by zinc oxide than zinc and cold phase materials, and is less susceptible to external corrosion. These factors are plagued by the industry and need to be improved. [New content] An electrode wire for electric discharge machining, which is produced by a metal of different phases, in which a first metal of a β phase (such as copper or brass) is used as a core, and a surface is intermittently draped. The _ metal coated with the r phase becomes a discharge force port line, and the discharge force line has more than 50% or more of the second metal, and the alloy has 55 (rc or more melting point). 】 This creation is based on the τ phase alloy material in the cold (four) process towel will be broken and reorganized Nuguo ^ used to maintain the relatively thin thickness of the r phase of the money layer before cold drawing, so it can be used in the cold load process The thickness of the coated 7-phase alloy is not too thick and is easily broken after being subjected to the reduction, so that an electric discharge machining (four) is performed, which is made by the first name 2 (such as copper, brass or copper clad steel). As the core, and then the second metal 3 with a calorific value of less than % kilo-hounds per square centimeter is coated with the first metal and becomes an alloy, and then one gold is heat-treated after being cold-drawn, and (4) the discharge of the cost creation Adding jade electrode line 1; although the surface is cut by the ideal condition It is better to have a % coating, but it is not necessary to use the experimental results to understand the excellent leg cutting line cutting results of the silk which is not covered by the Cong, so in the process of cold drawing by the difference of the females in different phases, After the r phase of the second metal 3 is brittle, the discontinuous 4 is generated and attached to the first metal i, so that the electric discharge machining electrode 1 created by the county is formed, but the second metal coverage rate must be The above is preferred. M324554 The singularity of the singularity of the r-phase yellow refill is more wear-resistant, and it is less susceptible to damage by zinc oxide than the rhyme and sputum, due to the r-phase brass coating. It can be processed at a lower temperature than prior art EDM cutting line products. In addition, the first metal in the present invention can be brass, wherein the words are 5% by weight, and the second metal can be made of the following zinc, tin, Magnesium and sinter metals, in response to different needs, but when the second metal is zinc, 'the second metal has a zinc content of 58% to 67% as a better equilibrium point, which can take into account the efficiency and use of cutting. The efficiency of this creation. The advantages of this creation····Reducing the preliminary cutting Time 2. Preliminary cutting at the same speed as a conventional brain cutting line, but with less plundering to achieve the same finished surface as a conventional EDM cutting line. 3. Use the same initial cutting speed as a traditional EDM cutting line. The same number of sweeps will result in a better finished surface. 4. The second phase of the 7-phase metal can be processed at a lower temperature, and the production cost is lower and easier. - 5·Pack of 7-phase brass The condition of the cover is less likely to wear than the cover of the word. 6. The case of coating with r-phase brass is less susceptible to damage by zinc oxide than the zinc and phaseless substances, and the quality is better than that of the surname. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a cross-sectional view of a development of a discharge electron beam under the longitudinal electron microscope of the present invention. A cross-sectional view of a discontinuous coating developed by a transverse electron microscope of the discharge machining line of the second figure. A horizontally enlarged cross-sectional view of the EDM of the EDM process in the third figure is shown in M324554. The fourth figure is a three-dimensional structure diagram of the EDM processing line developed under an electron microscope. [Description of main component symbols] Electrode wire for electric discharge machining 1 First metal 2 Second metal 3 Clearance 4