新型(xing)汽車焊(han)裝線用(yong)(yong)電(dian)阻焊(han)電(dian)極(ji)以本公司獨立開發的(de)彌散強化銅合金為原材料。采用(yong)(yong)先進(jin)的(de)內氧(yang)化制備工(gong)藝和(he)精密(mi)成(cheng)形工(gong)藝，使(shi)該合金在(zai)銅基(ji)體中引(yin)入了納米級細(xi)小彌散分布的(de)Al2O3粒子，從而保(bao)證了該電(dian)極(ji)在(zai)保(bao)持銅基(ji)體優越的(de)導電(dian)、導熱性(xing)的(de)同時，具有高的(de)室溫強度(du)和(he)高溫強度(du)。

一(yi)．新型汽(qi)車焊(han)裝線用(yong)電阻(zu)焊(han)電極特點(dian)

1．優越的高溫(wen)強(qiang)度和硬度（軟化溫(wen)度≧900℃）

　　電(dian)(dian)(dian)(dian)阻(zu)焊電(dian)(dian)(dian)(dian)極(ji)在(zai)工作(zuo)時要(yao)承受高(gao)(gao)(gao)(gao)溫(wen)和高(gao)(gao)(gao)(gao)壓的聯合作(zuo)用,且電(dian)(dian)(dian)(dian)極(ji)端面(mian)直接接觸高(gao)(gao)(gao)(gao)溫(wen)焊點(dian)表面(mian),工作(zuo)條(tiao)件惡(e)劣。采(cai)用傳統的Cu-Cr合金和 Cu-Cr-Zr合金制(zhi)作(zuo)電(dian)(dian)(dian)(dian)阻(zu)焊電(dian)(dian)(dian)(dian)極(ji)，由于(yu)高(gao)(gao)(gao)(gao)溫(wen)強度(du)低、軟化溫(wen)度(du)低，在(zai)高(gao)(gao)(gao)(gao)溫(wen)及壓力作(zuo)用下易發(fa)生變形和粘附(fu)等失效而損(sun)壞。而采(cai)用彌散(san)銅制(zhi)作(zuo)的新型電(dian)(dian)(dian)(dian)阻(zu)焊電(dian)(dian)(dian)(dian)極(ji)在(zai)保證電(dian)(dian)(dian)(dian)極(ji)具有(you)優良的導(dao)電(dian)(dian)(dian)(dian)、導(dao)熱(re)性能(neng)的同(tong)時擁有(you)高(gao)(gao)(gao)(gao)的高(gao)(gao)(gao)(gao)溫(wen)強度(du)和硬度(du)，從而提高(gao)(gao)(gao)(gao)了(le)電(dian)(dian)(dian)(dian)極(ji)壽命(ming)。

　　我公司生(sheng)產的電(dian)阻焊電(dian)極用彌散(san)強化銅(tong)合金(jin)性能與傳統(tong)電(dian)極用鉻青銅(tong)和Cu-Cr-Zr合金(jin)性能的對比見表1、圖1和圖2。

　　表(biao)1. 彌(mi)散強化(hua)銅合金室溫性(xing)能