鎢銅合金電極
鎢銅合(he)金電(dian)極是一(yi)種由高純(chun)度鎢粉(fen)和純(chun)度高塑性(xing)好的高導電(dian)性(xing)銅粉(fen)結合(he)，通過(guo)靜(jing)壓成(cheng)型，高溫(wen)燒結，熔融(rong)工藝精制而成(cheng)而成(cheng)的復合(he)金屬材料。良好的導電(dian)性(xing)、熱膨(peng)脹(zhang)小(xiao)、高溫(wen)不軟化，高強度，高密度，高硬度。
1分類
電阻焊電極
綜(zong)合了鎢和銅的良好(hao)性能(neng)，耐(nai)高(gao)溫、耐(nai)電弧燒蝕、強度(du)高(gao)，比重大，導電導熱性好(hao)，易于加工，而且它(ta)的功能(neng)如虛汗，與鎢高(gao)硬度(du)，高(gao)熔點(dian)，抗粘(zhan)附的特點(dian)，經常用來(lai)做有一定耐(nai)磨(mo)性，耐(nai)高(gao)低溫焊接，對焊電極。
電火花加工電極
電(dian)(dian)火花加(jia)(jia)工(gong)電(dian)(dian)極(ji)早期采用銅(tong)或石(shi)墨電(dian)(dian)極(ji)，便宜(yi)但不耐燒蝕。鎢銅(tong)電(dian)(dian)極(ji)的(de)(de)優點(dian)是耐高(gao)溫、高(gao)溫強(qiang)度高(gao)、耐電(dian)(dian)弧燒蝕，并(bing)且導電(dian)(dian)導熱(re)性(xing)能好，散(san)熱(re)快(kuai)。應用集中在電(dian)(dian)火花電(dian)(dian)極(ji)、電(dian)(dian)阻焊電(dian)(dian)極(ji)和高(gao)壓(ya)放電(dian)(dian)管(guan)電(dian)(dian)極(ji)。電(dian)(dian)加(jia)(jia)工(gong)電(dian)(dian)極(ji)特(te)點(dian)是品種(zhong)規格繁多，批量(liang)小(xiao)而總量(liang)多。作為電(dian)(dian)加(jia)(jia)工(gong)電(dian)(dian)極(ji)的(de)(de)鎢銅(tong)材料(liao)應具有盡可能高(gao)的(de)(de)致密度和組織的(de)(de)均(jun)勻(yun)性(xing)，特(te)別是細長的(de)(de)棒(bang)狀、管(guan)狀以及異型(xing)電(dian)(dian)極(ji)。
電(dian)(dian)(dian)(dian)(dian)加(jia)(jia)(jia)工(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)極(ji)用(yong)(yong)鎢(wu)(wu)銅(tong)(tong)(tong)合金(jin)在(zai)電(dian)(dian)(dian)(dian)(dian)火(huo)(huo)花加(jia)(jia)(jia)工(gong)(gong)(gong)發(fa)展(zhan)開始(shi)的(de)較長(chang)時期(qi)內，普遍采用(yong)(yong)銅(tong)(tong)(tong)和(he)銅(tong)(tong)(tong)合金(jin)作為加(jia)(jia)(jia)工(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)極(ji)。雖然銅(tong)(tong)(tong)和(he)銅(tong)(tong)(tong)合金(jin)價格低廉、使(shi)用(yong)(yong)方(fang)便(bian)，但是由于銅(tong)(tong)(tong)及(ji)銅(tong)(tong)(tong)合金(jin)電(dian)(dian)(dian)(dian)(dian)極(ji)不耐電(dian)(dian)(dian)(dian)(dian)火(huo)(huo)花燒蝕，導致電(dian)(dian)(dian)(dian)(dian)極(ji)消耗大，加(jia)(jia)(jia)工(gong)(gong)(gong)精度差(cha)(有(you)時需進(jin)行多次(ci)加(jia)(jia)(jia)工(gong)(gong)(gong))。隨著模具精度和(he)許多難加(jia)(jia)(jia)工(gong)(gong)(gong)材(cai)料部(bu)件(jian)用(yong)(yong)量(liang)的(de)不斷(duan)增(zeng)加(jia)(jia)(jia)，以及(ji)電(dian)(dian)(dian)(dian)(dian)火(huo)(huo)花加(jia)(jia)(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)藝(yi)的(de)日益成熟，鎢(wu)(wu)銅(tong)(tong)(tong)材(cai)料作為電(dian)(dian)(dian)(dian)(dian)火(huo)(huo)花加(jia)(jia)(jia)工(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)極(ji)的(de)用(yong)(yong)量(liang)與日俱(ju)增(zeng)。采用(yong)(yong)鎢(wu)(wu)銅(tong)(tong)(tong)材(cai)料的(de)電(dian)(dian)(dian)(dian)(dian)加(jia)(jia)(jia)工(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)極(ji)，不僅使(shi)被(bei)加(jia)(jia)(jia)工(gong)(gong)(gong)模具及(ji)部(bu)件(jian)的(de)精度提高(gao)，而(er)且電(dian)(dian)(dian)(dian)(dian)極(ji)損失小，加(jia)(jia)(jia)工(gong)(gong)(gong)效率高(gao)，甚至一次(ci)即可完成產品(pin)的(de)粗(cu)加(jia)(jia)(jia)工(gong)(gong)(gong)和(he)精加(jia)(jia)(jia)工(gong)(gong)(gong)。電(dian)(dian)(dian)(dian)(dian)火(huo)(huo)花加(jia)(jia)(jia)工(gong)(gong)(gong)電(dian)(dian)(dian)(dian)(dian)極(ji)的(de)特點是品(pin)種(zhong)規格繁(fan)多，批量(liang)小而(er)總量(liang)大。特別是一些細長(chang)棒(bang)材(cai)、管料以及(ji)異型(xing)電(dian)(dian)(dian)(dian)(dian)極(ji)，如果采用(yong)(yong)常規的(de)方(fang)法制取(qu)，則工(gong)(gong)(gong)藝(yi)十(shi)分繁(fan)雜(za)，材(cai)料利(li)用(yong)(yong)率很(hen)低。
鑒于在鎢(wu)(wu)鋼，耐高(gao)溫超硬(ying)合金壓鑄被腐(fu)蝕(shi)(shi)產(chan)生的(de)，常見的(de)電極損耗大，速(su)度慢，鎢(wu)(wu)銅電氣高(gao)速(su)，低損失率，精確的(de)電極形狀，優良的(de)加(jia)工性能腐(fu)蝕(shi)(shi)，確保加(jia)工件的(de)精度大大提高(gao)。
高壓放電管電極
高壓真空放電管(guan)在(zai)工(gong)作(zuo)場所，在(zai)幾秒(miao)鐘的時間接(jie)觸材料(liao)零度(du)數千(qian)攝氏度(du)，而鎢銅的抗燒蝕性(xing)能(neng)，高韌性(xing)，良(liang)好的導電導熱(re)性(xing)能(neng)給(gei)放電管(guan)提供必要的穩定條件。
2應用(yong)
鎢銅合金在高耐熱性，高電氣和/或熱導率和低熱膨脹相結合的應用中是必要的。部分應用在電阻焊，作為電氣接觸，并作為散熱器。由于合金觸頭材料的耐電弧侵蝕。鎢銅合金還用在電火花加工，電化學加工電極。
CuW75被廣泛地應用于熱安裝板、芯片載體、法蘭，以及高功率電子器件框架。作為鎢和銅的復合材料，同時具備了銅的熱性能以及低膨脹性的優良特點。
CuW75被廣泛地應用于熱安裝板、芯片載體、法蘭，以及高功率電子器件框架。作為鎢和銅的復合材料，同時具備了銅的熱性能以及低膨脹性的優良特點。
鎢(wu)銅(tong)復合材(cai)料由于其(qi)(qi)熱(re)導率和膨(peng)脹特(te)性，鎢(wu)銅(tong)合金(jin)在密(mi)集包裝線路中應用廣泛(fan)。70-90%的(de)(de)鎢(wu)合金(jin)被用在一些(xie)特(te)殊形狀產品制作中。滲透(tou)系數1.3增強(qiang)了對(dui)銅(tong)的(de)(de)均質鋼靶，因為兩(liang)者(zhe)的(de)(de)密(mi)度和破裂時間(jian)的(de)(de)增加(jia)。鎢(wu)粉的(de)(de)藥型(xing)襯(chen)墊，尤其(qi)(qi)適用于石油鉆井。其(qi)(qi)它韌(ren)性金(jin)屬可(ke)以用作銅(tong)的(de)(de)地方以及粘合劑(ji)。石墨可(ke)以添加(jia)潤(run)滑(hua)劑(ji)粉末。
3規格
70W30CU型
70W30CU型(xing)鎢(wu)銅合金電(dian)極(ji)是利用高(gao)(gao)純鎢(wu)粉優異(yi)的(de)金屬(shu)特性(xing)(xing)和高(gao)(gao)純紫銅粉的(de)可塑性(xing)(xing)、高(gao)(gao)導電(dian)性(xing)(xing)等優點，經靜壓成型(xing)、高(gao)(gao)溫(wen)燒結(jie)、溶滲(shen)銅的(de)工(gong)藝(yi)精制而(er)成的(de)復合材料(liao)。
75W25Cu型
75W25Cu型鎢(wu)銅合(he)(he)金電(dian)極作為鎢(wu)和銅的(de)復(fu)合(he)(he)材料，同時具備了銅的(de)熱(re)性能以及低膨脹性的(de)優良特(te)點。75%W的(de)鎢(wu)銅合(he)(he)金電(dian)極具有高耐熱(re)性，高熱(re)導率和低膨脹等特(te)點，因此(ci)75%W的(de)鎢(wu)銅合(he)(he)金電(dian)極常被應用于電(dian)阻焊，電(dian)氣接觸以及散(san)熱(re)器(qi)中。
80W20Cu型
80W20Cu型(xing)鎢(wu)銅合(he)金電極的(de)鎢(wu)含量為80%，牌號表示為CuW80，CuW80的(de)硬度大(da)概為98HRB，密度大(da)概為15.58g/cm3。鎢(wu)銅復合(he)材料的(de)熱膨脹特性(xing)與(yu)(yu)碳化(hua)硅、氧化(hua)鋁和氧化(hua)鈹的(de)相似，被利用(yong)與(yu)(yu)基(ji)板(ban)和芯片(pian)使(shi)用(yong)。
85W15Cu型
85W15Cu型(xing)鎢(wu)銅(tong)(tong)合金電極是(shi)(shi)以鎢(wu)、銅(tong)(tong)元(yuan)素為(wei)主(zhu)組成的一(yi)種兩(liang)相結(jie)構假合金，是(shi)(shi)金屬基復合材料(liao).由于(yu)金屬銅(tong)(tong)和鎢(wu)物性差異較大，因此不能采用熔鑄法(fa)進(jin)(jin)行(xing)生(sheng)產，一(yi)般采用粉末合金技(ji)術進(jin)(jin)行(xing)生(sheng)產。
4性能(neng)
電子應用鎢銅主要性能
類(lei)型 | 密(mi)度(du)(g/cm3) | HB(MPa) | 導(dao)電率 (% IACS) | 狀(zhuang)態 |
WCu10 | 16.8-17.2 | ≥2550 | > 27 | 桿(gan)，棒 薄片，板，配件 |
WCu20 | 15.2-15.6 | ≥2160 | > 34 | |
WCu25 | 14.5-15.0 | ≥1940 | > 38 | |
WCu30 | 13.8-14.4 | ≥1720 | > 42 |